Sound system composed of loudspeaker-sound box planar array and preparation method thereof

Abstract

The invention relates to a sound system composed of a loudspeaker-sound box planar array and a preparation method of the sound system, and belongs to the technical field of electroacoustics of electricity. Different from the prior art, the invention creatively utilizes numerous small and micro-aperture loudspeakers to form a special planar array sound box, utilizes numerous small and micro-aperture loudspeakers to cut off waste audio signal levels of 20-100Hz or even higher frequency by an existing sound box system filter, and simultaneously uses an algorithm of a linear digital filter, so as to improve the sound quality of the sound box. Frequency division and surround sound processing are carried out on an audio digital signal of the loudspeaker without generating phase shift, so that the loudspeaker outputs 20-100Hz strong, powerful, clear and pure bass sound waves in a synchronous superposition operation mode, and a series of functional defects of a traditional large-aperture bass loudspeaker are improved. And successfully creating a new generation of two-dimensional or three-dimensional surround sound plane array sound system.

Description

Technical Field

[0001] This invention relates to an audio system consisting of a loudspeaker-speaker box planar array and its manufacturing method, belonging to the field of electroacoustic technology in electrical engineering. Background Technology

[0002] In existing audio systems, the larger the diameter of a moving loudspeaker (also known as an electrodynamic loudspeaker, hereinafter referred to as a loudspeaker), the lower its resonant frequency Fo (Fs). For example, a A small-diameter woofer can achieve a Fo (frequency) of around 34Hz. With appropriate diaphragm, spider, surround, and stroke, it can output very powerful bass waves. The resonant frequency Fo of a loudspeaker is typically around 150-200Hz. The mechanical waves generated during its vibration have very short wavelengths, making it impossible to output low-frequency sound waves using such a small-diameter loudspeaker. Therefore, in a stereo system, to save energy and avoid damaging the loudspeakers, the 20-100Hz low-frequency output signal for small-diameter loudspeakers is often first cut off by the crossover before being sent to the power amplifier for amplification and to drive the loudspeaker.

[0003] This invention differs from existing technologies in that it innovatively utilizes numerous small-diameter loudspeakers to form a special planar array sound system. By using numerous small-diameter loudspeakers, audio signals at frequencies of 20-100Hz (or even higher) that are usually cut off in small loudspeaker systems are synchronously superimposed to output powerful bass waves. This can improve a series of functional defects of traditional large-diameter woofers and successfully create a new generation of two-dimensional or three-dimensional surround sound planar array sound systems. Summary of the Invention

[0004] The first objective of this invention is to utilize the 20-100Hz or even higher frequency audio signals from small-diameter loudspeakers, which have long since lost their usability, to generate powerful bass waves that are far purer than those from traditional large-diameter woofers through synchronous superposition. The second objective is to divide the small-diameter loudspeakers into basic sound units for different channels, and then drive these basic sound units in different areas through synchronous superposition to achieve an equivalent stereo or multi-channel sound system. For example, while all the small-diameter loudspeakers generate bass waves, they simultaneously drive the basic sound units belonging to different channels, such as the left front speaker, right front speaker, center speaker, left rear speaker, right rear speaker, and ceiling speaker, in a synchronous superposition manner, thereby achieving a surround sound effect in two-dimensional or three-dimensional space for a planar array sound system.

[0005] The objective of this invention is achieved as follows:

[0006] An audio system comprising a loudspeaker-speaker cabinet planar array and its manufacturing method, including a CPU and memory, an AC / DC power rectifier bridge and filter and heat dissipation device, an HDMI or USB interface and bus, an audio digital wireless-Bluetooth input / output module, a linear digital filter and its algorithm, a mixer, an analog-to-digital converter (ADC), a digital-to-analog converter (DAC), a power amplifier, loudspeakers and matching speaker cabinets, a frame, a panel, a base plate, a cover, flexible padding, a PCB board, fasteners, etc., characterized in that: the loudspeaker is... Each loudspeaker is equipped with a speaker enclosure of the same geometric dimensions. The speaker enclosure can be a sealed enclosure or an open enclosure. Each basic sound-generating unit of the planar array audio system consists of 1 to N loudspeakers. X basic sound-generating units are assembled into a set or more planar array audio systems configured around a flat-panel TV / laser projection TV by means of a frame, panel, base plate, cover, fasteners and flexible pads made of rigid materials.

[0007] A panel made of a relatively thick rigid material is embedded and fixed in a closed outer frame with flexible padding, and the panel is connected and fixed to the frame with fasteners.

[0008] The panel is uniformly provided with (1 to N)×X through holes, and (1 to N)×X speaker enclosures made of rigid material are embedded in the through holes of the panel. The (1 to N)×X speakers are also embedded in the speaker enclosures of the panel, and an electrical connection relationship of 1 to N speakers is established between the basic sound-generating units of the planar array audio system.

[0009] According to the pre-set channel requirements of the planar array audio system, the speakers on the panel are divided into basic sound-generating units belonging to different channels. When the speaker has a relatively flat sound pressure frequency response curve, a crossover point F is selected in the frequency band below the speaker's resonant frequency Fo using a linear digital filter algorithm. L Thus, 20Hz-F was obtained. L Low-pass signal band and F L The -20kHz high-pass signal is converted into a linear analog signal by a mixer and a digital-to-analog converter (DAC), and then amplified by the corresponding power amplifier. It drives the basic sound unit of each channel in a synchronous superimposed operation mode, and at the same time drives the bass channel basic sound unit composed of all the speakers in a synchronous superimposed operation mode.

[0010] According to the pre-set channel requirements of the planar array audio system, the speakers on the panel are divided into basic sound-producing units belonging to different channels. When the speaker has a large fluctuation and uneven sound pressure frequency response curve, a crossover point F is selected in the frequency band below the speaker resonant frequency Fo using a linear digital filter algorithm. L At the same time, select an appropriate frequency division point F within the Fo uplink frequency band. H Thus, 20Hz-F was obtained. L Low-pass signal band and F L -F H Bandpass signal frequency band and F H The -20kHz high-pass signal is converted into an analog signal without phase shift by a mixer and a digital-to-analog converter (DAC). The signal is then amplified by the corresponding power amplifier and driven in a synchronous superimposed mode to drive the basic sound unit of each channel. At the same time, the basic sound unit of the bass channel, which consists of all the speakers, is driven in a synchronous superimposed mode.

[0011] A thin, rigid base plate is fixed inside the inner frame and connected to the frame using fasteners.

[0012] The outer position frame and the inner position frame have the same projected area and are connected by four rigid connecting rods of equal height at appropriate positions. Then, an angle steel base is connected to the bottom of the inner position frame. The frame and angle steel base of the planar array speaker are fixed to the indoor wall at an appropriate height by stainless steel expansion bolts that are pre-embedded in the wall.

[0013] The bottom of the inner frame is equipped with a 300-1000W AC / DC power rectifier bridge, filter, and heat dissipation device for the planar array speaker, an HDMI or USB interface and bus for the audio player, a wireless / Bluetooth input module for the audio digital wireless / Bluetooth output module, and a PCB board of several digital-to-analog converters (DACs) and several discrete power amplifier modules or a power amplifier IC integrated module mounted on the bottom plate of the planar array speaker.

[0014] The resulting algorithm can run on a local area network server, laptop, personal computer, flat-screen TV microcomputer, or other independent CPU system. Simultaneously, it uses several basic sound-generating units of the small-diameter loudspeaker-speaker planar array sound system to synchronously superimpose and reproduce the 20Hz-20kHz audio signal of the digital music program source (including voice). This overcomes the shortcomings of traditional woofers, such as excessive inertia due to the excessive mass of the vibration system, severe phase delay distortion due to excessive inductance of the multi-layer voice coil, slow transient response of the cone, and muddy bass. It successfully creates a two-dimensional or three-dimensional surround sound planar array sound system for flat-screen TVs / laser projection TVs with powerful bass below 100Hz, high resolution, and a very wide audio dynamic range.

[0015] An audio system comprising a loudspeaker-speaker cabinet planar array and its manufacturing method, including a CPU and memory, an AC / DC power rectifier bridge and filter and heat dissipation device, an HDMI or USB interface and bus, an audio digital wireless-Bluetooth input / output module, a linear digital filter and its algorithm, a mixer, an analog-to-digital converter (ADC), a digital-to-analog converter (DAC), a power amplifier, loudspeakers and matching speaker cabinets, a frame, a panel, a base plate, a cover, flexible padding, a PCB board, fasteners, etc., characterized in that: the loudspeaker is... Each loudspeaker is equipped with a speaker enclosure of the same geometric dimensions. The speaker enclosure can be a sealed enclosure or an open enclosure. Each basic sound-generating unit of the planar array sound system consists of 1 to N loudspeakers. X basic sound-generating units are assembled into several planar array sound systems that are configured on the stage and surrounding walls and ceiling of a theater / conference hall using rigid material frames, panels, base plates, covers, fasteners and flexible pads.

[0016] A panel made of a relatively thick rigid material is embedded and fixed in a closed outer frame with flexible padding, and the panel is connected and fixed to the frame with fasteners.

[0017] The panel is uniformly provided with (1 to N)×X through holes, and (1 to N)×X speaker enclosures made of rigid material are embedded in the through holes of the panel. The (1 to N)×X speakers are also embedded in the speaker enclosures of the panel, and an electrical connection relationship of 1 to N speakers is established between the basic sound-generating units of the planar array audio system.

[0018] According to the pre-set channel requirements of the planar array audio system, the speakers on the panel are divided into basic sound-generating units belonging to different channels. When the speaker has a relatively flat sound pressure frequency response curve, a crossover point F is selected in the frequency band below the speaker's resonant frequency Fo using a linear digital filter algorithm. L Thus, 20Hz-F was obtained. L Low-pass signal band and F L A 20kHz high-pass signal is converted into an analog signal without phase shift via a mixer and a digital-to-analog converter (DAC). This signal is then amplified by a corresponding power amplifier and used to drive the basic sound unit of each channel in a synchronous superposition operation. Simultaneously, it drives the bass channel basic sound unit, composed of all the speakers, in a synchronous superposition operation. According to the pre-set channel requirements of the planar array audio system, the speakers on the panel are divided into basic sound units belonging to different channels. When a speaker has a large fluctuation and uneven sound pressure frequency response curve, a crossover point F is selected within the frequency band below the speaker's resonant frequency Fo using a linear digital filter algorithm. L At the same time, select an appropriate frequency division point F within the Fo uplink frequency band. H Thus, 20Hz-F was obtained. L Low-pass signal band and F L -F H Bandpass signal frequency band and F H The -20kHz high-pass signal is converted into an analog signal without phase shift by a mixer and a digital-to-analog converter (DAC). The signal is then amplified by the corresponding power amplifier and driven in a synchronous superimposed mode to drive the basic sound unit of each channel. At the same time, the basic sound unit of the bass channel, which consists of all the speakers, is driven in a synchronous superimposed mode.

[0019] A thin, rigid base plate is fixed inside the inner frame and connected to the frame using fasteners.

[0020] The outer position frame and the inner position frame have the same projected area and are connected by four rigid connecting rods of equal height at appropriate positions. Then, an angle steel base is connected to the bottom of the inner position frame. The frame and angle steel base of the planar array speaker are fixed to the indoor wall at an appropriate height by expansion bolts pre-embedded in the wall. The bottom plate of the inner position frame is equipped with a 500-2000W AC / DC power rectifier bridge, filter and heat dissipation device for the planar array speaker, an HDMI or USB interface and bus for the audio player, a wireless / Bluetooth input module for the audio digital wireless / Bluetooth output module, and a PCB board of several digital-to-analog converters (DACs) and several discrete power amplifier modules or a power amplifier IC integrated module.

[0021] Several sets of planar array speakers and several sets of traditional ceiling speakers are installed around the stage / platform and at appropriate heights on the interior walls of theaters or auditoriums. This constitutes a complete algorithm that can run on a local area network server, laptop, personal computer, or other independent CPU system. At the same time, the small-diameter dynamic loudspeaker-speaker planar array basic sound unit synchronously superimposes to reproduce the 20Hz-20kHz audio signal of the digital music program source (including voice). This overcomes the existing technical defects of traditional woofers, such as excessive inertia due to excessive mass of the vibration system, serious phase delay distortion due to excessive inductance of multi-layer voice coils, slow transient response speed of the cone, and muddy bass. It successfully produces a two-dimensional or three-dimensional surround sound planar array speaker system for theaters / audio halls with powerful bass below 100Hz, high resolution, very wide audio dynamic range, and significantly improved reverberation time in buildings.

[0022] An audio system comprising a loudspeaker-speaker cabinet planar array and its manufacturing method, including a CPU and memory, an AC / DC power rectifier bridge and filter and heat dissipation device, an HDMI or USB interface and bus, an audio digital wireless-Bluetooth input / output module, a linear digital filter and its algorithm, a mixer, an analog-to-digital converter (ADC), a digital-to-analog converter (DAC), a power amplifier, loudspeakers and matching speaker cabinets, a frame, a panel, a base plate, a cover, flexible padding, a PCB board, fasteners, etc., characterized in that: the loudspeaker is... Each loudspeaker is equipped with a speaker enclosure of the same geometric dimensions. The speaker enclosure can be a sealed enclosure or an open enclosure. Each basic sound unit of the planar array speaker consists of 1 to N loudspeakers and speaker enclosures. X basic sound units are assembled into a planar array speaker system by installing a panel, PCB board, stainless steel speaker enclosure, fasteners and flexible pads in the cavity at the lower end of the computer monitor / all-in-one computer panel and the cavity in the recessed part of its back shell.

[0023] A rigid material panel is embedded and fixed in a pre-set cavity at the lower end of the computer monitor / all-in-one computer panel and the cavity of the recessed part of its back shell, and the panel is connected and fixed to the tongue and groove joint by fasteners;

[0024] The panel is uniformly provided with (1 to N)×X through holes, and (1 to N)×X speaker enclosures made of rigid material are embedded in the through holes of the panel. The (1 to N)×X speakers are also embedded in the speaker enclosures of the panel, and an electrical connection relationship of 1 to N speakers is established between the basic sound-generating units of the planar array audio system.

[0025] According to the pre-set channel requirements of the planar array audio system, the speakers on the panel are divided into basic sound-generating units belonging to different channels. When the speaker has a relatively flat sound pressure frequency response curve, a crossover point F is selected in the frequency band below the speaker's resonant frequency Fo using a linear digital filter algorithm. L Thus, 20Hz-F was obtained. L Low-pass signal band and F L The -20kHz high-pass signal is converted into an analog signal without phase shift by a mixer and a digital-to-analog converter (DAC). The signal is then amplified by the corresponding power amplifier and driven in a synchronous superimposed mode to drive the basic sound unit of each channel. At the same time, the basic sound unit of the bass channel, which consists of all the speakers, is driven in a synchronous superimposed mode.

[0026] The 30-100W AC / DC power rectifier bridge, filter, and heat dissipation device for the planar array audio system, as well as the USB or HDMI interface and bus that are compatible with the audio player, are all provided by the computer system. Several digital-to-analog converters (DACs) and several discrete power amplifier modules or a single power amplifier IC integrated module are installed on the PCB board or PCB expansion board of the computer monitor / all-in-one computer.

[0027] The resulting algorithm can run on a local area network server, laptop, personal computer, or other independent CPU system. Simultaneously, it uses the small-diameter loudspeaker-speaker planar array basic sound unit to synchronously superimpose and reproduce the 20Hz-20kHz audio signal of the digital music program source (including voice). This overcomes the existing technical defect of traditional computer speakers lacking bass, and successfully produces a 2.1-5.1 channel planar array speaker system for computers with powerful bass below 100Hz, high resolution, and a very wide audio dynamic range.

[0028] A sound system consisting of a loudspeaker-speaker box planar array and its manufacturing method are characterized in that: the panel is an organic glass plate or stainless steel plate with an electroplated metal film on the outer surface, and the fitting connection between the panel and the frame and the flexible pad is coated with a removable flexible sealant.

[0029] A sound system and its manufacturing method consisting of a loudspeaker-speaker box planar array are characterized in that: the bottom of the speaker box mounted on the panel is provided with a pair of loudspeaker terminal blocks with significantly different positive and negative pole shapes, one end of which is connected to the positive or negative pole terminal of the loudspeaker embedded in the speaker box, and the other end of which is connected to X basic sound generating units and X power amplifiers respectively through connectors and audio wires.

[0030] A sound system consisting of a loudspeaker-speaker cabinet planar array and its manufacturing method are characterized in that: a stainless steel speaker cabinet is provided on the outermost part of the cavity of the computer monitor / all-in-one computer and is flush with the corresponding shell of the computer monitor / all-in-one computer.

[0031] An audio system comprising a loudspeaker-speaker cabinet planar array and its manufacturing method, including a CPU and memory, an AC / DC power rectifier bridge and filter and heat dissipation device, an HDMI or USB interface and bus, an audio digital wireless-Bluetooth input / output module, a linear digital filter and its algorithm, a mixer, an analog-to-digital converter (ADC), a digital-to-analog converter (DAC), a power amplifier, loudspeakers and matching speaker cabinets, a frame, a panel, a base plate, a cover, flexible padding, a PCB board, fasteners, etc., characterized in that: the loudspeaker is... Each loudspeaker is equipped with a speaker enclosure of the same geometric dimensions. The speaker enclosure can be a sealed enclosure or an open enclosure. Each basic sound unit of the planar array audio system consists of 1 to N loudspeaker enclosures. X basic sound units are assembled into a planar array audio system that runs close to the building wall, embedded in the wall, or embedded in the cavity at the bottom end of the computer monitor / all-in-one computer panel and its back shell cavity through a frame, panel, base plate, fasteners and flexible pads made of rigid materials.

[0032] According to the pre-set channel requirements of the planar array audio system, the speakers on the panel are divided into basic sound-generating units belonging to different channels. When the speakers have a relatively flat sound pressure level response curve, an appropriate crossover point F is selected in the frequency band below the resonant frequency Fo. L The linear digital filter is then used to construct a 20Hz-F frequency band whose phase and amplitude frequency characteristics meet the requirements of linear frequency division but do not produce phase shift. L Low-pass signal band, if necessary, the 20Hz-F frequency band can be reduced using an algorithm. L The low-pass signal band level is boosted to an appropriate dB value without causing phase shift, along with F L --The 20kHz high-pass signal band is converted into a multi-channel audio analog signal without phase shift by a mixer and a digital-to-analog converter (DAC). The signal is then amplified by a voltage-power amplifier corresponding to the basic sound unit. The number of basic sound units driving different channels is selected so that they can be synchronously superimposed and achieve a balanced output level for each channel.

[0033] According to the pre-set channel requirements of the planar array audio system, the speakers on the panel are divided into basic sound-producing units belonging to different channels. When the speaker has a large fluctuation and uneven sound pressure frequency response curve, a crossover point F is selected in the frequency band below the speaker resonant frequency Fo using a linear digital filter algorithm. L At the same time, select an appropriate frequency division point F within the Fo uplink frequency band. H Thus, 20Hz-F was obtained. L Low-pass signal band and F L -F H Bandpass signal frequency band and F H -20kHz high-pass signal band, if necessary, the 20Hz--F frequency band can be converted using an algorithm. L The low-pass signal band level is boosted to an appropriate dB value without causing phase shift, or F... L -F H Bandpass signal frequency band and F H The level of the -20kHz high-pass signal band is balanced and boosted or attenuated to an appropriate dB value without phase shift. It is then converted into a multi-channel audio analog signal without phase shift by a mixer and digital-to-analog converter (DAC). The signal is then amplified by a power amplifier corresponding to the basic sound unit. The number of basic sound units driving different channels is selected so that they can be synchronously superimposed to achieve a balanced output level for each channel.

[0034] The resulting algorithm can run on a local area network server, laptop, personal computer, or independent CPU system. It uses the synchronous superposition of the basic sound-generating units of the small-diameter loudspeaker-speaker planar array speaker to reproduce the 20Hz-20kHz audio signal of the digital music program source. It overcomes the existing technical defects of traditional woofers, such as excessive inertia due to the excessive mass of the vibrating system, severe phase delay distortion due to the excessive inductance of the multi-layer voice coil, slow transient response of the cone, and muddy bass. It successfully prepares a two-dimensional or three-dimensional multi-channel planar array speaker system with powerful bass below 50Hz, high resolution, very wide audio dynamic range, and significantly improved defects such as excessive reverberation time of sound waves in buildings.

[0035] The beneficial effects of this invention are:

[0036] 1. Overcoming the biases of traditional technology, by utilizing the 20-100Hz or even higher frequency audio signal output levels of small-diameter loudspeakers that have been cut off and discarded in an arrangement, the planar array loudspeakers can produce a very powerful and clear bass sound effect by operating in a synchronous superposition mode.

[0037] 2. Traditional large-diameter woofer vibration systems suffer from excessive weight, resulting in excessive inertia. The excessive inductance of multi-layer voice coils also causes severe phase delay distortion in the input / output audio signals.

[0038] 3. Practical experience has proven that the bass or sub-bass sound waves generated by the planar array sound system overcome the defects of traditional large-diameter loudspeakers, such as muddy bass and excessively long reverberation time caused by multiple reflections between the walls of a building. Its sound quality is powerful yet clear and pure, with higher resolution and fidelity. Attached Figure Description

[0039] Figure 1. Speaker elevation and 3D rendering.

[0040] Figure 2. Elevation and 3D rendering of the sealed speaker enclosure.

[0041] Figure 3. Plan view of the panel layout and left elevation of the planar array audio system.

[0042] Figure 4. Plan view of the base plate of the planar array sound system and schematic diagram of the left elevation.

[0043] Figure 5. Assembly diagram of the frame structure of the planar array audio system.

[0044] Figure 6. Schematic diagram of the enclosure structure of a planar array audio system.

[0045] Figure 7. Speaker sound pressure impedance frequency response curve.

[0046] Figure 8. Low-pass filter curve of a linear digital filter.

[0047] Figure 9 5.1 Channel Planar Array Audio System: Schematic diagram of speaker distribution for each channel.

[0048] Figure 10 .1.4 Schematic diagram of the speaker distribution of a planar array audio system.

[0049] Figure 11. Schematic diagram of the left and right rear speaker distribution of the 5.1.4 channel planar array audio system.

[0050] Figure 12 A schematic diagram of the planar layout of Example 1 of the planar array audio system.

[0051] Figure 13 Schematic diagram of the planar layout of Embodiment 2 of the planar array audio system.

[0052] Figure 14 Schematic diagram of the planar layout of embodiment 3 of the planar array audio system.

[0053] Figure 15 Schematic diagram of the planar layout of Example 4 of the planar array audio system.

[0054] Figure 16. Front elevation view of embodiment 5 of the planar array audio system.

[0055] Figure 17. Schematic diagram of the rear facade arrangement of embodiment 5 of the planar array audio system.

[0056] The correspondence between the main components and reference numerals of this invention:

[0057] Speaker---1; Speaker enclosure---2; 5.1 channel planar array speaker: left front channel speaker---2-1; 5.1 channel planar array speaker: right front channel speaker---2-2; 5.1 channel planar array speaker: left rear channel speaker---2-3; 5.1 channel planar array speaker: right rear channel speaker---2-4; 5.1 channel planar array speaker: center channel speaker---2-5; 5.1 channel planar array speaker: subwoofer channel speaker---2-6; Frame---3; Front panel---4; Base plate---5; DC power indicator light---6; USB interface---7; HDMI interface---8; Stainless steel angle / flat steel connecting rod---9; Removable sealant---10; Loudspeaker sound pressure frequency response curve---11; Frame enclosure (side panel)---12-1; Frame enclosure (top panel)---12-2; Stainless steel angle iron base---13; The loudspeaker's resonant frequency Fo is 14. Speaker crossover point FL---15; Speaker crossover point F H ---16; Heat shield and ventilation holes---17; Flexible padding---18; AC power connector---20; AC / DC rectifier bridge, filter, and heat sink---21; Bluetooth input / output module---22; Analog-to-digital converter (ADC)---23; Digital-to-analog converter (DAC)---24; Power amplifier---25; Immersive / surround sound chipset--26; Planar array audio system---101;

[0058] 5.1.4 Channel Planar Array Audio System, Left Front Channel Speaker---101-1;

[0059] 5.1.4 Channel Planar Array Audio System, Front Right Channel Speaker---101-2;

[0060] 5.1.4 Channel Planar Array Audio System Center Channel Speaker---101-5;

[0061] 5.1.4 Channel Planar Array Audio System Subwoofer Channel Speaker---101-6

[0062] 5.1.4 Channel Planar Array Audio System Left Rear Channel Speaker---103;

[0063] 5.1.4 Channel Planar Array Audio System, Right Rear Channel Speaker---104;

[0064] 5.1.4 Channel Planar Array Speaker System Ceiling Speaker---107;

[0065] 86-75 inch flat-screen TV---108; Sofa seating---109; Wall-mounted TV---110; Laser projection TV screen---111; Laser projection TV---112; Planar array sound system---201; Ceiling speakers---202; Escalator steps---203; Stage / Platform---204; Theater / Grand Hall---205;

[0066] All-in-one PC / Computer Monitor---300; All-in-one PC / Computer Monitor Panel---301;

[0067] All-in-one PC / Computer Monitor Back Cover---302; Speaker---1;

[0068] Hollow at the bottom of the all-in-one computer / computer monitor panel---303;

[0069] Hollow panel at the bottom of the all-in-one computer / computer monitor panel---304;

[0070] All-in-one computer / computer monitor back shell cavity---305;

[0071] All-in-one computer / computer monitor back shell cavity panel---306; Stainless steel speaker cover panel---307. Detailed Implementation

[0072] Figure 1 illustrates the present invention. Speaker elevation and 3D rendering. Component 1 is a neodymium iron boron internal magnet moving coil loudspeaker (hereinafter referred to as loudspeaker), with a cone support diameter of [missing information]. The height is 32.5mm, the resonant frequency Fo = 199Hz, the sensitivity = 80dB+ / 1m / 1W, and the DCR = 4Ohm.

[0073] Figure 2 shows the elevation and 3D view of the sealed speaker enclosure of the ￠50mm loudspeaker of the present invention. The external dimensions of the enclosure are: length × width × height = 60mm × 60mm × 65mm, and the volume of each enclosure is approximately 0.2L.

[0074] Figure 3 shows the planar layout of the panel of the planar array audio system of the present invention and a schematic diagram of the left elevation.

[0075] Depend on Figure 3-a As can be seen, this is a plan view of a planar array audio system manufactured by the applicant of this invention using 2-inch speaker components that have been stockpiled for many years. Frame 3 consists of two rectangular frames with the same projected area, welded together using stainless steel angle steel. Please refer to [link / reference needed]. Figure 5-a As shown. Four stainless steel angle steel rods 9 of equal height are welded to the four corners of the two frames to connect the two frames 3 into a whole. Please refer to [link / reference]. Figure 5-b , Figure 5-c As shown. An angle steel base 13, welded from stainless steel angle steel, is welded to the inner frame as a single unit, as... Figure 5-b , Figure 5-d , Figure 5-e As shown. In addition, a suitable number of through holes (not shown in this invention) are provided on the four horizontal surfaces of the stainless steel angle steel base 13. The stainless steel angle steel base 13 is fixed to the indoor wall at an appropriate height by means of expansion bolts pre-embedded in the wall and through the through holes reserved on the horizontal surfaces of the planar array acoustic stainless steel angle steel base 13.

[0076] To prevent resonance in the planar array audio system, a thick acrylic panel 4 is embedded within the vertical edge of the stainless steel angle iron mounted on the outer frame 3 using a flexible gasket (e.g., a silicone rubber pad) 18. Simultaneously, several screw holes are pre-drilled on the side of the panel 4, and screws are used to fix the panel 4 to the angle iron edge of the outer frame 3 through these screw holes. Since this is the most common installation method in existing electromechanical products, the screw holes on the stainless steel angle iron edge of the outer frame 3, the screws, the screw holes on the side of the panel 4, and the flexible gasket 18 are omitted from the drawings.

[0077] To prevent moisture and dust from the surrounding environment from entering the internal space of the planar array speaker, after all structural components and all speaker components are assembled, removable sealant 10 is applied to the joint surfaces of the panel 4 and the outer frame 3, as well as the base plate and the inner frame 3 and the flexible pad 18. For the same reason, the undrawn parts are omitted in this invention.

[0078] Figure 3-a The diagram shows that panel 4 has 36 rows of speaker / speaker enclosure penetration holes along the horizontal axis and 20 rows along the vertical axis. Figure 3-a 720 sealed plastic speaker enclosures 2 are embedded within the 720 through holes shown, and each sealed speaker enclosure 2 contains a speaker 1. For the same reason mentioned above, the openings and installation diagrams of the through holes, sealed speaker enclosures 2, and neodymium iron boron internal magnet speaker 1 on the panel are omitted in this invention. Please refer to Figures 1 and 2 for details in the specification.

[0079] Figure 3-b A schematic diagram of the left elevation of a planar array sound system is shown.

[0080] The DC power indicator light 6, USB interface 7, and HDMI interface 8 of the planar array audio system are all mounted on a strip-shaped insulating plate, such as a phenolic cloth plate (not shown in this invention), between the outer frame 3 and the inner frame 3. After the entire planar array audio system is assembled, it is enclosed by the housing 12. At this time, the combined dimensions of the frame 3 are length × width × height = 2360mm × 1330mm × 150mm.

[0081] Figure 4 shows the planar layout of the base plate of the planar array audio system of the present invention and the schematic diagram of the left elevation.

[0082] Depend on Figure 4-aAs can be seen, the base plate 5 is made of two phenolic laminated fabric boards that are slightly thinner than the front panel 4, and is fixed to the horizontal edge of the stainless steel angle steel of the inner frame 3 with screws (not shown in this invention). The AC power connector 20, AC / DC rectifier bridge and filter and heat sink 21, wireless Bluetooth input / output module 22, analog-to-digital converter ADC 23, digital-to-analog converter DAC 24, power amplifier 25 (16 in total) and the wiring connectors leading to the front panel speaker are all mounted on the base plate 5.

[0083] Figure 4-b The net height of the planar array audio system is shown to be 150 mm (excluding the enclosure).

[0084] Figure 5 shows the frame structure assembly diagram of the planar array audio system of the present invention.

[0085] Figure 5-a This is a front view of a frame made of welded stainless steel angle steel. Figure 5-b It is an elevation view of a frame structure consisting of two stainless steel angle steel frames 3, four stainless steel angle steel connecting rods 9 of equal length, and a stainless steel angle steel base 13 welded together. Figure 5-c This is a horizontal cross-sectional view of the stainless steel angle steel connecting rod 9 and the far-side frame 3. Figure 5-d This is a front view of the angle steel base 13, which is made of stainless steel angle steel welded together. The stainless steel angle steel horizontal surface around the base has several evenly arranged through holes so that expansion bolts pre-embedded in the wall can be connected and fixed to the stainless steel angle steel base. Figure 5-e This is the left elevation view of stainless steel angle base 13.

[0086] Figure 6 shows a schematic diagram of the housing structure of the planar array audio system of the present invention.

[0087] Figure 6-a The elevation view of the enclosure is shown, which consists of three side panels and a top panel. It is made of anodized aluminum alloy or stainless steel sheet of a certain thickness. Its internal dimensions are matched to the frame dimensions of the planar array speaker system. Countersunk screws are used to connect and fix the enclosure panels to the stainless steel angle bars of the two frames 3. The open side is connected and fixed to the screw holes on the outer side of the stainless steel angle bar frame 3 of the panel 4 using countersunk screws. To ensure that the heat generated by the planar array speaker system inside the enclosure can be discharged to the surrounding environment during operation, several heat dissipation holes 17 should be pre-installed on both sides of the enclosure near the top panel 12-2 at a height of 150mm. Figure 6-a , 6-b 6-c lung indication.

[0088] Figure 7 illustrates the present invention. The frequency response curve of the loudspeaker's sound pressure impedance.

[0089] Depend on Figure 7-a As can be seen from the speaker's sound pressure level frequency response curve 11, this speaker uses equipment that the applicant has had stockpiled for many years. Its resonant frequency Fo14 reaches a relatively high 199Hz due to the surround effect, but overall, the sound pressure level frequency response curve 11 shows a relatively flat and relatively stable trend. Its sound pressure level reference value between 20Hz and 50Hz is approximately 37dB to 50dB. Therefore, it is necessary to rely on actual testing results. The loudspeaker's sound pressure level frequency response curve 11 selects a crossover point F approximately 120Hz below the resonant frequency Fo. L 15 points are used as the crossover points of the planar array audio system of this invention, dividing the frequency range from 20Hz to F. L As a low-pass signal frequency band, F L --20kHz is used as the high-pass signal band. A software-written linear digital filter is used to digitize the 720 speakers mounted on panel 4. For details, please refer to Figure 8 and... Figure 9 The contents of the instruction manual will be described.

[0090] Figure 7-b Show The loudspeaker's resonant frequency Fo = 199 Hz, DCR = 4 Ohm, and SPL = 80 dB+ / 1m / 1W.

[0091] Figure 7-c It shows As can be seen from the loudspeaker's sound pressure level frequency response curve 11, a crossover point F is set at 120Hz. L 15. A crossover point F is set at 3.5kHz. H 16, thus forming 20Hz-F L Low-pass signal band, F L -F H Bandpass signal frequency band, F H -20kHz high-pass signal band. For some loudspeakers with large fluctuations and uneven sound pressure frequency response curves, this three-way linear filter processing scheme, although increasing the complexity of the algorithm and the resource allocation standard of the computer, can make full use of the phase frequency and amplitude characteristics provided by the linear digital filter. Without causing phase shift, it can boost or attenuate the signal level in certain frequency bands as necessary, thereby achieving better sound quality for the planar array speaker system of this invention.

[0092] Figure 8 shows the low-pass filter frequency response curve of the linear digital filter of the present invention.

[0093] Figure 8-a The following is a low-pass filter frequency response curve of a fourth-order linear digital filter. Figure 8-bThe image shows the frequency response curve of a 1025th-order linear digital filter low-pass filter. Both filters have a crossover point of 200Hz. However, the slopes of the frequency response curves are significantly different, resulting in drastically different phase shifts in the processed audio signals. Figure 8-a The slope shown will produce significant phase distortion in the audio signal. Figure 8-b The slope shown is very steep, and no phase distortion is generated throughout the audio signal processing.

[0094] It's necessary to clarify that the order of a filter refers to the order of the highest-order differential term in the filter's transfer function. Specifically, the filter's order indicates the number of poles in its transfer function, which determines the descent rate in the transition region. Generally, each increase in order (one pole) increases the attenuation by 20 dB per decibel. Simply put, it reflects the strength of the filter's filtering capability when processing signals. Higher-order filters offer stronger filtering effects and can remove noise and other interference to a greater extent. However, higher-order filters require more computer hardware and software resources; therefore, the order of a linear digital filter must be carefully selected.

[0095] Furthermore, linear phase characteristics are one of the most important features of linear filters. This makes them widely used in many applications requiring linear phase, such as the audio signal processing field discussed in this invention. Their linear phase characteristics, i.e., phase and amplitude frequency characteristics, ensure that the delay of each frequency component of the signal is the same after passing through the filter, thereby avoiding distortion in the phase and amplitude of the processed signal.

[0096] For further related information, please refer to the Chinese invention patent CN202110983300.6 (Invention title: A novel bass playback method and device. Authorization announcement number: CN113747304B, Authorization announcement date: April 26, 2024) which has been granted to the applicant of this invention.

[0097] Figure 9 A schematic diagram of the speaker distribution for each channel of the 5.1-channel planar array audio system of the present invention is shown.

[0098] This invention will be discussed in conjunction with Figure 8 and Figure 9 The core technical solutions of the planar array sound system are explained in detail.

[0099] exist Figure 9 The panel 4 of the planar array sound system shown has a total of 720 through holes (36 columns × 20 rows) to house 720 sealed speaker enclosures 2 with the same geometric dimensions. Each speaker enclosure 2 contains one speaker. Neodymium iron boron internal magnet loudspeakers. Specifically, the 80 loudspeakers (4 columns × 20 rows) on the left outer side of frame 3 are designated as the left front channel (speaker 2-1). The 80 loudspeakers (4 columns × 20 rows) on the right outer side of frame 3 are designated as the right front channel (speaker 2-2). 72 loudspeakers (2 columns × 20 rows + 2 columns × 16 rows) are designated as the left rear channel (speaker 2-3). 72 loudspeakers (2 columns × 20 rows + 2 columns × 16 rows) are designated as the right rear channel (speaker 2-4). 80 loudspeakers (4 columns × 20 rows) are designated as the center channel (speaker 2-5) on both sides of the frame's vertical central axis. The remaining 336 loudspeakers are designated as the subwoofer channel (speaker 2-6).

[0100] To reduce product costs and appropriately decrease the number of power amplifiers driving the loudspeakers, this invention uses four loudspeakers to form each basic sound-generating unit of a planar array audio system. (Referring to Figures 1 and 7...) Figure 9 In this implementation, two 50mm speakers are connected in series to form a series circuit with an impedance of 8 Ohms. These two series circuits are then connected in parallel to form a basic sound unit with a rated impedance of 4 Ohms. Thus, in this embodiment, the left and right front channel speakers each have 20 independent basic sound units; the left and right rear channel speakers each have 18 independent basic sound units; the center channel has 20 independent basic sound units; and the bass channel has 84 independent basic sound units, plus 96 basic sound units that operate synchronously and compatiblely with the left front, right front, center, left rear, and right rear channel speakers.

[0101] Based on the speaker sound pressure level response curve in Figure 7 obtained from actual testing, select an appropriate crossover point F within the frequency band below the resonant frequency Fo. L For example, at 120Hz, the linear digital filter is used to construct a 20Hz-120Hz low-pass signal band with phase and amplitude characteristics that meet the requirements of linear frequency division but do not produce phase shift (if necessary, the level of the 20Hz-120Hz low-pass signal band is evenly boosted to an appropriate dB value without producing phase shift using an algorithm). Together with the 120Hz-20kHz high-pass signal band, this is converted into a multi-channel audio analog signal without phase shift by a mixer and a digital-to-analog converter (DAC). The signal is then amplified by a power amplifier corresponding to the basic sound unit. The number of basic sound units driving different channels is selected so that they are synchronously superimposed to achieve a balanced output level for each channel.

[0102] This constitutes the entire algorithm, which can run on a local area network server, laptop, personal computer, or independent CPU system. The 20Hz-120Hz low-pass signal band is input into the corresponding power amplifier for voltage and power amplification, and drives 84 independent bass channel basic sound units and 96 basic sound units compatible with the left front, right front, center, left rear, and right rear channels in a synchronous superposition mode, so that the planar array audio system outputs very powerful bass sound waves below 50Hz.

[0103] Meanwhile, the planar array sound system also converts the 120Hz-20kHz high-pass signal band into a multi-channel audio analog signal without phase shift via a mixer and digital-to-analog converter (DAC). This signal is then amplified by a power amplifier connected to the aforementioned basic sound units, and driven in a synchronous superposition mode to power 20 left front channel basic sound units, 20 right front channel basic sound units, 20 center channel basic sound units, 18 left rear channel basic sound units, and 18 right rear channel basic sound units. This results in a successful 5.1 virtual surround sound planar array sound system with high resolution, high fidelity, a very wide audio dynamic range, and significantly improved performance, addressing the shortcomings of excessively long reverberation time within buildings.

[0104] Figure 10 A schematic diagram of the speaker distribution of the planar array audio system of the present invention is shown.

[0105] Figure 11 shows a schematic diagram of the left and right rear channel speaker distribution of the planar array audio system 5.1.4 of the present invention.

[0106] To meet the home theater needs of 85-75 inch flat-panel TVs, this invention can divide the 2360mm×1330mm flat-panel array speaker panel shown in Figures 3 and 4 into sections composed of two 400mm×1700mm frames 3 and one 475mm×2360mm frame 3. The π-shaped array sound system encloses an 85-75 inch flat-screen TV 108 within the π-shaped frame 3.

[0107] The assembly and fabrication of the panel 4 and base plate 5 of the modular frame 3 are described in the specification shown in Figures 3 to 6 of this invention and will not be repeated here. The left front channel speaker 101-1, the right front channel speaker 10-2, and the center channel speaker 101-5 each have 20 basic sound units, and the bass channel speaker 101-6 has 81 independent basic sound units. The left rear channel speaker 103 and right rear channel speaker 104, each separately installed in a planar array, have 20 basic drivers. The entire 5.1-channel planar array speaker system has a total of 181 basic drivers and 724... speaker.

[0108] The π-shaped planar array speaker, composed of three frames, has necessary holes between them as wiring channels for connecting speaker wires, power cords, etc.

[0109] The left rear channel speaker 103 and the right rear channel speaker 104, which are installed separately on the wall behind the sofa seat 109, have a frame 3 with a length × width × height of 660mm × 530mm × 150mm. The structural design is described in the description of Figures 3-6 of this invention and will not be repeated here.

[0110] If you need to use it with a 120-100 inch laser projection TV, simply follow the instructions in Figures 3-8 of this invention. Figure 9 --The structural principles described in the specification and claims, as shown in Figure 11, can be used to successfully manufacture many different types of television planar array sound systems.

[0111] Figure 12 A schematic diagram of the planar array audio system of embodiment 1 of the present invention is shown.

[0112] This is a simple home listening room, with a minimum size of 16.2 square meters. The locations of doors and windows on wall 110 are omitted and not shown. A planar array speaker system 101 with virtual 5.1 channel surround sound effects is installed on the bottom wall of the listening room, as shown in Figures 3 to 4. Figure 9 As described in the instruction manual, it is installed on a wall approximately 1-1.2 meters above the ground. A listening sofa chair 109 is placed in the center of the listening room. Assuming the aforementioned example still uses 720 units of this invention... A planar array audio system is constructed using neodymium iron boron internal magnet loudspeakers. When this audio system outputs powerful bass sound waves, the total volume of the subwoofer enclosure is approximately: 0.2 × 720 × 0.3 = 43L (0.3 is the occupancy factor after deducting the loudspeaker volume from the enclosure's geometric volume).

[0113] If we adopt more efficient and superior methods... With neodymium iron boron internal magnet loudspeakers, and a sensitivity SPL of 83dB / 1m / 1W for each loudspeaker, this planar array audio embodiment requires only 360 loudspeakers in total. If the sensitivity SPL of each loudspeaker is 86dB / 1m / 1W, then only 180 loudspeakers are needed. The speaker, thereby enabling the technical solution proposed in this invention to be better optimized and improved.

[0114] Figure 13 A schematic diagram of the planar array audio system embodiment 2 of the present invention is shown.

[0115] This embodiment 2 still uses the home theater layout scheme provided in embodiment 1: a planar array sound system 101 with 5.1 virtual surround sound effect is installed on the bottom wall of the TV screening room; a 100-120 inch laser projector TV screen 111 is installed in front of the component 101 at an appropriate position; a laser projector TV 112 is installed on the ceiling of the living room, and its projection installation distance is determined by the model of the selected laser projector TV. The installation accessories for components 111 and 112 are supplied by the projector TV manufacturer. If a sensitivity SPL = 86dB / 1m / 1W is used... To build a planar array sound system, approximately 180 loudspeakers are needed. Speakers are sufficient. In this case, the panel dimensions of the planar array speaker are: (2360÷4)×(1330÷4)×150=590mm×333mm×150mm, which can be completely obscured behind the hard or soft screen of the laser projector (TV). This allows consumers to enjoy a 5.1-channel virtual surround sound home theater audio-visual experience far exceeding the sound effects of a soundbar + subwoofer.

[0116] Figure 14 A schematic diagram of the planar array audio system embodiment 3 of the present invention is shown.

[0117] This embodiment 3 still uses the home theater layout scheme provided in embodiments 1 and 2: a set of 3.1 channel speakers is installed on the bottom wall of the TV screening room. Planar array speaker 101, such as Figure 10 As shown, it mainly includes a left front channel speaker 101-1, a right front channel speaker 101-2, a center channel speaker 101-5, a subwoofer channel speaker 101-6, and a left rear channel speaker 103 and a right rear channel speaker 104 mounted on the wall behind the sofa seat 109. Their ground clearance is approximately 1-1.2 meters. For details, please refer to [link / reference needed]. Figure 10 The contents of the instruction manual in Figure 11 will not be repeated here. To achieve an immersive 3D surround sound effect, a total of four [unclear - possibly referring to a specific type of sound system] were installed on the ceiling above the sofa chair 109. (6.5-inch) Ceiling Speaker 107, specific dimensions as follows Figure 14 As shown in Figure 5. According to the foregoing description of the invention, this embodiment... The planar array speaker 101, along with the left rear channel speaker 103, right rear channel speaker 104, and ceiling speaker 107, forms a multi-channel audio wireless control network via an audio digital wireless-Bluetooth output / input module. Simultaneously, through the... The CPU and HDMI interface of an 86-75 inch flat-screen TV, surrounded by a planar array speaker system, combine the aforementioned channel speakers to form a home or commercial cinema system with 5.1.4 three-dimensional surround sound. Furthermore, a Blu-ray audio / video player and the flat-screen TV can also be connected to form a standalone 5.1.4 three-dimensional surround sound cinema system.

[0118] It should be particularly noted that: in this embodiment 3, the left rear channel speaker 103 and the right rear channel speaker 104 not only play their own dedicated rear channel audio signals, but also... The planar array sound system synchronously plays powerful and clear bass sound waves from all its basic sound-generating units, which is a significant difference between this invention and other 5.1.4 three-dimensional sound systems.

[0119] Figure 15 A schematic diagram of the planar array audio system embodiment 4 of the present invention is shown.

[0120] This is a floor plan of a cinema / conference hall, so the specific dimensions of the building are not indicated. The locations of doors and windows on the walls (200mm) and fire exits are omitted. The plan includes a stage / principal platform (204), a cinema / conference hall (205), and escalator steps (203). Ten sets of planar array speakers (201) and eight sets of traditional 6.5-inch ceiling speakers (202) are installed around the stage / principal platform and at appropriate heights on the walls (e.g., 3m above ground level). This allows the entire algorithm to run on a local area network server, laptop, personal computer, or other independent CPU system, simultaneously reproducing digital music using the synchronous superposition of the small-diameter loudspeaker-speaker planar array basic sound-generating units. This system utilizes 20Hz-20kHz audio signals from the program source (including voice) to overcome existing technical defects in traditional subwoofers, such as excessive inertia due to the heavy mass of the vibrating system, severe phase delay distortion between input and output audio signals due to excessive inductance of multi-layer voice coils, slow transient response of the cone, and muddy bass. It successfully creates a three-dimensional surround sound planar array audio system for cinemas / conference halls, significantly improving upon the shortcomings of traditional subwoofers, including powerful yet clear and pure bass below 100Hz, high resolution, a very wide audio dynamic range, and excessively long reverberation time within buildings.

[0121] Although the embodiments of this invention do not specify the planar geometric dimensions of the buildings, in order to achieve an immersive three-dimensional surround sound effect, the planar array speakers 201 installed on the stage / platform and surrounding walls of theaters / conference halls are generally configured as 3.1-channel sound systems, for example, those in embodiments 3 and 2 of this invention. The arrangement of the planar array speakers is similar, but the structural form is the same as the rectangular frame 3 described in Figures 3 to 6 of this invention. Every four ceiling speakers 202 and one set of planar array speakers 201 form a separate channel audio signal wireless control network via an audio digital Bluetooth output / input module. However, all 10 sets of planar array speakers 201 and the audio players (including amplifiers or electronic mixing consoles) of the theater / conference hall stage / presidential platform are synchronously networked using the same transmission frequency of the wireless-Bluetooth output / input module.

[0122] It should be noted that this embodiment 4 merely provides a new technical solution for a planar array sound system that differs significantly from traditional cinema / conference hall sound reinforcement systems. Because traditional large-diameter woofers have very high output sound pressure levels, the reverberation time of the bass sound waves, resulting from multiple reflections and superpositions within the building's interior space due to pressure, is too long, inevitably leading to a muddy and unclear bass sound. When the reverberation time is less than 300ms, the listener will perceive the sound as very dry, and the lack of sufficient overtones makes even speech sound less full and pleasant. This invention generates very powerful bass sound waves by synchronously superimposing hundreds (at least 180) small-diameter loudspeakers. However, the output sound pressure level of each loudspeaker is not high, and the vibration system of each small loudspeaker is very lightweight, with minimal inertia during piston-like motion. Therefore, although the bass and even sub-bass sound waves generated by the planar array sound system of this invention have a very strong sound field, these bass sounds consistently clear and pure, without any of the muddy sound of traditional woofers. Therefore, the use of a planar array integrated sound system in cinemas / conference halls is a very complex and important system engineering project, which cannot be covered by a simple invention or embodiment.

[0123] Figure 16 shows a frontal elevation view of Embodiment 5 of the planar array audio system of the present invention.

[0124] Figure 17 shows a schematic diagram of the rear facade arrangement of Embodiment 5 of the planar array audio system of the present invention.

[0125] Compared with Figures 3 to 4 of the present invention Figure 15The instruction manuals differ: the aforementioned planar array sound system is an independent sound product composed of components such as frame 3, panel 4, base plate 5, stainless steel angle iron base 13, and frame housing 12, and is typically mounted on or embedded in a wall. While the speakers and enclosures in this embodiment 5 are also mounted on a panel, they are typically thinner, for example, made of fiberglass board or flame-retardant ABS plastic board. Figure 16-a As can be seen, a long rectangular cavity 303 is provided at the lower end of the all-in-one computer or desktop computer monitor panel 301, with tongue and groove joints around its perimeter. A panel 304 is installed within the projected area of ​​this lower end cavity 303, and is fixed to the computer or monitor housing by several pre-set nuts—plastic posts and flexible pads 18—at the bottom of the chassis. The panel 304 has 20 columns × 4 rows = 80 [unclear text - possibly related to a specific feature or feature]. Neodymium magnet speaker and matching speaker enclosure.

[0126] Depend on Figure 17-a As can be seen, a long, recessed rectangular cavity 305 is provided in the middle of the back cover of the all-in-one computer or desktop computer monitor, with tongue and groove joints around its perimeter. A panel 306 is installed within the projected area of ​​this cavity 305. The panel 306 is fixed to the housing of the all-in-one computer or monitor by several pre-set nuts—plastic posts and flexible washers 18—at both ends of the inner side of the panel. The panel 306 is equipped with 20 columns × 4 rows = 80 ￠20×16 core neodymium iron boron speakers and matching speaker enclosures.

[0127] Therefore, it can be seen that this embodiment 5 has a total of 160 units. Speakers and matching speaker enclosures.

[0128] (A total of 40 basic sound units). For details on setting up dedicated sound channels, please refer to this invention. Figure 10 The contents of the instruction manual will not be repeated here.

[0129] The speaker 1 and the speaker enclosure 2 are mounted and fixed to the panel through X pre-set through holes to prevent resonance during normal operation. Figure 16-b and Figure 17-b As can be seen, a stainless steel speaker cover plate 307 is also provided on the tongue and groove joints of the cavities 303 and 305 to cover the cavity and is flush with the outer surface of the all-in-one computer or monitor panel and back shell.

[0130] Generally speaking, the diameter of speaker 1 is in Between calibers, but the inventor recommends using A 16-core cone-shaped neodymium iron boron internal magnet loudspeaker. Linear digital filters and their algorithms, mixers, etc., can all be written to the HDD or SSD of an all-in-one computer or desktop computer. Since the order of a linear digital filter is generally above 1025 to ensure that the processed audio digital signal does not produce phase shift when converted to an analog signal, this embodiment requires a high-end all-in-one computer or desktop computer with at least 16GB of RAM. The HDD capacity should be at least 2TB and reach 10000RPM. When using an SSD, at least 1TB and 2000MB / s speed are required. The computer's CPU should have a clock speed of at least 3.8-5.3GHz, similar to an Intel i5-14600KF or i7-14700K processor. For the planar array speaker system, the AC / DC 30-100W power supply rectifier bridge, filter, heatsink, analog-to-digital converter (ADC), digital-to-analog converter (DAC), and power amplifier should, as far as possible, be integrated circuit modules mounted on a PCB expansion board inside the all-in-one computer / desktop computer chassis. Therefore, this embodiment 5 is a new technical solution that is different from the aforementioned planar array audio system. It can enable the creation of a planar array multimedia audio system with 2.1 / 3.1 channels and powerful bass effect for all-in-one computers or desktop computer monitors of 22.3 inches or larger.

Claims

1. An audio system composed of a loudspeaker-speaker planar array and its manufacturing method, comprising a CPU and memory, an AC / DC power rectifier bridge and filter and heat dissipation device, an HDMI or USB interface and bus, an audio digital wireless-Bluetooth input / output module, a linear digital filter and its algorithm, a mixer, an analog-to-digital converter (ADC), a digital-to-analog converter (DAC), a power amplifier, loudspeakers and matching speaker enclosures, a frame, a panel, a base plate, a cover, flexible padding, a PCB board, fasteners, and other components, characterized in that: a. The speaker is Each loudspeaker is equipped with a speaker enclosure of the same geometric dimensions. The speaker enclosure can be a sealed enclosure or an open enclosure. Each basic sound-generating unit of the planar array audio system consists of 1 to N loudspeakers. X basic sound-generating units are assembled into a set or more planar array audio systems configured around a flat-panel TV / laser projection TV by means of a frame, panel, base plate, cover, fasteners and flexible pads made of rigid materials. b. A panel made of a relatively thick rigid material is embedded and fixed in a closed outer frame by a flexible pad and the panel is connected and fixed to the frame by fasteners; c. The panel is uniformly provided with (1 to N)×X through holes, and (1 to N)×X speaker enclosures made of rigid material are embedded in the through holes of the panel. The (1 to N)×X speakers are also embedded in the speaker enclosures of the panel, and an electrical connection relationship of 1 to N speakers is established between the basic sound-generating units of the planar array audio system. d. According to the pre-set channel requirements of the planar array audio system, the loudspeakers on the panel are divided into basic sound-generating units belonging to different channels. When the loudspeaker has a relatively flat sound pressure frequency response curve, a crossover point F is selected in the frequency band below the loudspeaker resonant frequency Fo using a linear digital filter algorithm. L Thus, 20Hz-F was obtained. L Low-pass signal band and F L The -20kHz high-pass signal is converted into an analog signal without phase shift by a mixer and a digital-to-analog converter (DAC). The signal is then amplified by the corresponding power amplifier and driven in a synchronous superimposed mode to drive the basic sound unit of each channel. At the same time, the basic sound unit of the bass channel, which consists of all the speakers, is driven in a synchronous superimposed mode. e. According to the pre-set channel requirements of the planar array audio system, the speakers on the panel are divided into basic sound-generating units belonging to different channels. When the speaker has a large fluctuation and uneven sound pressure frequency response curve, a crossover point F is selected in the frequency band below the speaker resonant frequency Fo using a linear digital filter algorithm. L At the same time, select an appropriate frequency division point F within the Fo uplink frequency band. H Thus, 20Hz-F was obtained. L Low-pass signal band and F L -F H Bandpass signal frequency band and F H The -20kHz high-pass signal is converted into an analog signal without phase shift by a mixer and a digital-to-analog converter (DAC). The signal is then amplified by the corresponding power amplifier and driven in a synchronous superimposed mode to drive the basic sound unit of each channel. At the same time, the basic sound unit of the bass channel, which consists of all the speakers, is driven in a synchronous superimposed mode. f. A base plate made of a thin, rigid material is fixed inside the inner frame and connected and fixed to the frame by fasteners; g. The projected areas of the outer position frame and the inner position frame are equal, and four rigid connecting rods of equal height are connected at appropriate positions. Then, an angle steel base is connected to the bottom of the inner position frame. The frame and angle steel base of the planar array speaker are fixed to the indoor wall at an appropriate height by expansion bolts pre-embedded in the wall. h. The base plate of the inner position frame is provided with a 300-1000W AC / DC power rectifier bridge, filter and heat dissipation device for the planar array speaker, an HDMI or USB interface and bus for the audio player, a wireless / Bluetooth input module for the audio digital wireless / Bluetooth output module, and a PCB board of several digital-to-analog converters (DACs) and several discrete power amplifier modules or a power amplifier IC integrated module mounted on the base plate of the planar array speaker. i. The resulting algorithm can run on a local area network server, laptop, personal computer, flat-screen TV microcomputer, or other independent CPU system. Simultaneously, it uses the synchronous superposition of several basic sound-generating units of the small-diameter loudspeaker-speaker planar array sound system to reproduce the 20Hz-20kHz audio signal of the digital music program source (including voice). This overcomes the existing technical defects of traditional woofers, such as excessive inertia due to the excessive mass of the vibration system, severe phase delay distortion due to the excessive inductance of the multi-layer voice coil, slow transient response speed of the cone, and muddy bass. It successfully produces a 20-100Hz flat-screen TV / laser projection TV two-dimensional or three-dimensional surround sound planar array sound system with powerful bass, high resolution, and a very wide audio dynamic range.

2. A sound system and its manufacturing method comprising a loudspeaker-speaker planar array, including a CPU and memory, an AC / DC power rectifier bridge and filter and heat dissipation device, an HDMI or USB interface and bus, an audio digital wireless-Bluetooth input / output module, a linear digital filter and its algorithm, a mixer, an analog-to-digital converter (ADC), a digital-to-analog converter (DAC), a power amplifier, loudspeakers and matching speaker enclosures, a frame, a panel, a base plate, a cover, flexible padding, a PCB board, fasteners, etc., characterized in that: a. The speaker is Each loudspeaker is equipped with a speaker enclosure of the same geometric dimensions. The speaker enclosure can be a sealed enclosure or an open enclosure. Each basic sound-generating unit of the planar array sound system consists of 1 to N loudspeakers. X basic sound-generating units are assembled into several planar array sound systems that are configured on the stage and surrounding walls and ceiling of a theater / conference hall using rigid material frames, panels, base plates, covers, fasteners and flexible pads. b. A panel made of a relatively thick rigid material is embedded and fixed in a closed outer frame by a flexible pad and the panel is connected and fixed to the frame by fasteners; c. The panel is uniformly provided with (1 to N)×X through holes, and (1 to N)×X speaker enclosures made of rigid material are embedded in the through holes of the panel. The (1 to N)×X speakers are also embedded in the speaker enclosures of the panel, and an electrical connection relationship of 1 to N speakers is established between the basic sound-generating units of the planar array audio system. d. According to the pre-set channel requirements of the planar array audio system, the speakers on the panel are divided into basic sound-generating units belonging to different channels. When the speaker has a relatively flat sound pressure frequency response curve, a crossover point F is selected within the band below the speaker resonant frequency Fo using a linear digital filter algorithm. L Thus, 20Hz--F is obtained. L Low-pass signal band and F L --A 20kHz high-pass signal is converted into an analog signal without phase shift by a mixer and a digital-to-analog converter (DAC). The signal is then amplified by the corresponding power amplifier and driven in a synchronous superimposed mode to drive the basic sound unit to which each channel belongs. At the same time, the basic sound unit of the bass channel, which is composed of all the speakers, is driven in a synchronous superimposed mode. e. According to the pre-set channel requirements of the planar array audio system, the speakers on the panel are divided into basic sound-generating units belonging to different channels. When the speaker has a large fluctuation and uneven sound pressure frequency response curve, a crossover point F is selected in the frequency band below the speaker resonant frequency Fo using a linear digital filter algorithm. L At the same time, select an appropriate frequency division point F within the Fo uplink frequency band. H Thus, 20Hz-F was obtained. L Low-pass signal band and F L -F H Bandpass signal frequency band and F H The -20kHz high-pass signal is converted into an analog signal without phase shift by a mixer and a digital-to-analog converter (DAC). The signal is then amplified by the corresponding power amplifier and driven in a synchronous superimposed mode to drive the basic sound unit of each channel. At the same time, the basic sound unit of the bass channel, which consists of all the speakers, is driven in a synchronous superimposed mode. f. A base plate made of a thin, rigid material is fixed inside the inner frame and connected and fixed to the frame by fasteners; The outer position frame and the inner position frame have the same projected area and four rigid connecting rods of equal height are connected at appropriate positions. Then, an angle steel base is connected to the bottom of the inner position frame. The frame and angle steel base of the planar array speaker are fixed to the indoor wall at an appropriate height by expansion bolts pre-embedded in the wall. h. The base plate of the inner position frame is provided with a 500-2000W AC / DC power rectifier bridge and filter and heat dissipation device for the planar array speaker, an HDMI or USB interface and bus for the audio player, a wireless / Bluetooth input module for the audio digital wireless / Bluetooth output module, and a PCB board of several digital-to-analog converters (DACs) and several discrete power amplifier modules or a power amplifier IC integrated module mounted on the base plate of the planar array speaker. i. Several sets of planar array speakers and several sets of traditional ceiling speakers are installed at appropriate heights around the stage / platform and interior walls of cinemas or auditoriums. This constitutes a complete algorithm that can run on a local area network server, laptop, personal computer, or other independent CPU system. At the same time, the small-diameter dynamic loudspeaker-speaker planar array basic sound unit is synchronously added to reproduce the 20Hz-20kHz audio signal of the digital music program source (including voice). This overcomes the existing technical defects of traditional woofers, such as excessive inertia due to excessive mass of the vibration system, severe phase delay distortion due to excessive inductance of multi-layer voice coils, slow transient response speed of the cone, and muddy bass. A two-dimensional or three-dimensional surround sound planar array speaker system for cinemas / audio halls with powerful bass, high resolution, very wide audio dynamic range, and significantly improved reverberation time in buildings is successfully produced.

3. An audio system and its manufacturing method comprising a loudspeaker-speaker planar array, including a CPU and memory, an AC / DC power rectifier bridge and filter and heat dissipation device, an HDMI or USB interface and bus, an audio digital wireless-Bluetooth input / output module, a linear digital filter and its algorithm, a mixer, an analog-to-digital converter (ADC), a digital-to-analog converter (DAC), a power amplifier, loudspeakers and matching speaker enclosures, a frame, a panel, a base plate, a housing, flexible padding, a PCB board, fasteners, and other components, characterized in that: a. The speaker is Each loudspeaker is equipped with a speaker enclosure of the same geometric dimensions. The speaker enclosure can be a sealed enclosure or an open enclosure. Each basic sound unit of the planar array speaker consists of 1 to N loudspeakers and speaker enclosures. X basic sound units are assembled into a planar array speaker system by installing a panel, PCB board, stainless steel speaker enclosure, fasteners and flexible pads in the cavity at the lower end of the computer monitor / all-in-one computer panel and the cavity in the recessed part of its back shell. b. A panel made of rigid material is embedded and fixed in a pre-set cavity at the lower end of the computer monitor / all-in-one computer panel and the cavity of the recessed part of the back shell, and the panel is connected and fixed to the cavity of the computer monitor / all-in-one computer by fasteners. c. The panel is uniformly provided with (1 to N)×X through holes, and (1 to N)×X speaker enclosures made of rigid material are embedded in the through holes of the panel. The (1 to N)×X speakers are also embedded in the speaker enclosures of the panel, and an electrical connection relationship of 1 to N speakers is established between the basic sound-generating units of the planar array audio system. d. According to the pre-set channel requirements of the planar array audio system, the loudspeakers on the panel are divided into basic sound-generating units belonging to different channels. When the loudspeaker has a relatively flat sound pressure frequency response curve, a crossover point F is selected in the frequency band below the loudspeaker resonant frequency Fo using a linear digital filter algorithm. L Thus, 20Hz-F was obtained. L Low-pass signal band and F L The -20kHz high-pass signal is converted into an analog signal without phase shift by a mixer and a digital-to-analog converter (DAC). The signal is then amplified by the corresponding power amplifier and driven in a synchronous superimposed mode to drive the basic sound unit of each channel. At the same time, the basic sound unit of the bass channel, which consists of all the speakers, is driven in a synchronous superimposed mode. e. The 30-100W AC / DC power rectifier bridge, filter, and heat dissipation device for the planar array audio system, as well as the USB or HDMI interface and bus that are compatible with the audio player, are all provided by the computer system. Several digital-to-analog converters (DACs) and several discrete power amplifier modules or a single power amplifier IC integrated module are installed on the PCB board or PCB expansion board of the computer monitor / all-in-one computer. f. The resulting algorithm can run on a local area network server, laptop, personal computer, or other independent CPU system. Simultaneously, it uses the small-diameter loudspeaker-speaker planar array basic sound unit synchronous superposition operation mode to reproduce the 20Hz-20kHz audio signal of digital music program source (including voice). This overcomes the existing technical defects of traditional computer speakers lacking bass, and successfully produces a 2.1-5.1 channel planar array speaker system for computers with powerful bass, high resolution, and a very wide audio dynamic range of 20-100Hz.

4. The audio system and its manufacturing method comprising a loudspeaker-speaker planar array as described in claims 1-3, characterized in that: The panel is an organic glass plate or stainless steel plate with an electroplated metal film on the outer surface, and the fitting joint between it and the frame and flexible pad is coated with a removable flexible sealant.

5. The audio system comprising a loudspeaker-speaker cabinet planar array as described in claims 1-3, and its manufacturing method, characterized in that: The bottom of the speaker installed on the panel is provided with a pair of speaker terminal boards with obvious differences in positive and negative shapes. One end of the terminal boards is connected to the positive or negative terminal of the speaker embedded in the speaker box, and the other end is connected to the X basic sound units and the X power amplifiers through connectors and audio wires.

6. The audio system comprising a loudspeaker-speaker cabinet planar array as described in claim 3, characterized in that: The outermost part of the cavity of the computer monitor / all-in-one computer is also provided with a stainless steel speaker cover plate, which is flush with the corresponding shell of the computer monitor / all-in-one computer.

7. A method for manufacturing an audio system consisting of a loudspeaker-speaker planar array, comprising a CPU and memory, an AC / DC power rectifier bridge and filter and heat dissipation device, an HDMI or USB interface and bus, an audio digital wireless-Bluetooth input / output module, a linear digital filter and its algorithm, a mixer, an analog-to-digital converter (ADC), a digital-to-analog converter (DAC), a power amplifier, loudspeakers and matching speaker enclosures, a frame, a panel, a base plate, a cover, flexible pads, a PCB board, fasteners, speaker enclosure panels, etc., characterized in that: a. The speaker is Each loudspeaker is equipped with a cabinet of the same geometric dimensions. The cabinet can be a sealed cabinet or an open cabinet. Each basic sound unit of the planar array audio system consists of 1 to N loudspeaker cabinets. X basic sound units are assembled into a planar array audio system that runs close to the building wall, embedded in the wall, or embedded in the cavity at the bottom of a computer monitor / all-in-one computer and its back shell cavity through a frame, panel, base plate, fasteners and flexible pads made of rigid materials. b. According to the pre-set channel requirements of the planar array audio system, the speakers on the panel are divided into basic sound-generating units belonging to different channels. When the speakers have a relatively flat sound pressure frequency response curve, an appropriate crossover point F is selected in the frequency band below the resonant frequency Fo. L The linear digital filter is then used to construct a 20Hz-F frequency band whose phase and amplitude frequency characteristics meet the requirements of linear frequency division but do not produce phase shift. L Low-pass signal band, if necessary, the 20Hz-F frequency band can be reduced using an algorithm. L The low-pass signal band level is boosted to an appropriate dB value without causing phase shift, along with F L --The 20kHz high-pass signal band is converted into a multi-channel audio analog signal without phase shift by a mixer and a digital-to-analog converter (DAC). The signal is then amplified by a voltage-power amplifier corresponding to the basic sound unit. The number of basic sound units driving different channels is selected so that they can be synchronously superimposed and achieve a balanced output level for each channel. c. According to the pre-set channel requirements of the planar array audio system, the speakers on the panel are divided into basic sound-generating units belonging to different channels. When the speaker has a large fluctuation and uneven sound pressure level response curve, a crossover point FL is selected in the frequency band below the speaker resonant frequency Fo using a linear digital filter algorithm, and an appropriate crossover point F is selected in the upper frequency band of Fo. H Thus, 20Hz-F was obtained. L Low-pass signal band and F L -F H Bandpass signal frequency band and F H -20kHz high-pass signal band, if necessary, the 20Hz--F frequency band can be converted using an algorithm. L The low-pass signal band or its level is boosted to an appropriate dB value without causing a phase shift, or the F L -F H Bandpass signal frequency band and F H The -20kHz high-pass signal band is level-equalized, boosted or attenuated to an appropriate dB value without phase shift, and then converted into a phase-shift-free multi-channel audio analog signal via a mixer and digital-to-analog converter (DAC). This signal is then voltage-to-power converted by a power amplifier corresponding to the basic sound unit. enlarge By selecting the number of basic sound units driving different channels and making them run synchronously, a balanced output level can be achieved for each channel. d. The resulting algorithm can run on a local area network server, laptop, personal computer, or independent CPU system. It uses the synchronous superposition of the basic sound-generating units of the small-diameter loudspeaker-speaker planar array speaker to reproduce the 20Hz-20kHz audio signal of the digital music program source. This overcomes the existing technical defects of traditional woofers, such as excessive inertia due to the excessive mass of the vibration system, severe phase delay distortion due to the excessive inductance of the multi-layer voice coil, slow transient response of the cone, and muddy bass. It successfully prepares a two-dimensional or three-dimensional multi-channel planar array speaker system with powerful bass, high resolution, very wide audio dynamic range, and significantly improved sound wave reverberation time in buildings.

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