278 results about "Bass (sound)" patented technology

A technique for enhancing audio signals generated from compressed digital audio files is described. The technique uses a Bass Maximizer module, a Harmonic Exciter module and a Quasi Stereo module. The Bass Exciter module enhances the intensity, depth and punch of the bass audio content by creating harmonic sequences from low frequency components contained in the original input signal. The Harmonic Exciter module adds to the treble audio content of the original input signal by generating harmonic series from the high frequency components contained in the input signal. The Quasi Stereo Module creates a stereo image of the enhanced input signal by adding and subtracting delayed and filtered versions of the enhanced input signal with itself to create left and right channeled stereo-like outputs. The technique provides a useful tool to regenerate from an audio signal more pleasant and joyful sounds.

A hearing device (FIG. 1, FIG. 2, FIG. 3) that simultaneously generates both air and bone conduction sounds. The vibrator (6) placed on mastoid bone can effectively produce enhanced bass sound effects.This hearing device can be used for an hearing impaired person.

A signal processing device includes a bass signal extractor, a harmonic wave generator, a level detector, and an adjustment controller. The bass signal extractor first extracts a bass signal from an input audio signal. Natural-sounding bass enhancement is achieved as a result of the adjustment controller boosting the bass signal level until the level detector detects the bass signal level at a set level. For input bass signal levels higher than the set level, bass is enhanced virtually using a harmonic signal generated from the bass signal by the harmonic wave generator. As a result, the disadvantages of the boost method and the virtual signal enhancement method are mutually compensated for, and synergistic advantages for bass enhancement are obtained.

A forward focused bipolar loudspeaker system includes a front-facing driver array and a rear facing driver array with substantially identical front-facing and rear-facing midrange or mid-bass drivers voiced and driven so that the measured SPL curves of each of the arrays, when measured individually, are tonally balanced. The front array and rear array have substantially identical on-axis and off axis frequency response and the rear array's output power (SPL) is reduced by, preferably, about 6 dB with respect to the output power produced by the front-facing array, while retaining a flat tonal balance for both the front and rear speakers, to produce a sound power ratio of about 2:1 as measured by comparing the front and back SPL levels of the speakers. This bipolar speaker system and method for voicing was discovered to provide greater clarity and improved localization while retaining the spacious envelopment of the bipolar sound field.

Provided are, among other things, systems, methods and techniques for processing an audio signal to add virtual bass. In one representative embodiment, an apparatus includes: (a) an input line that inputs an original audio signal; (b) a transform module that transforms the original audio signal into a set of frequency components; (c) a bass extraction filter that extracts a bass portion of such frequency components; (d) an estimator that estimates a fundamental frequency of a bass sound within such bass portion; (e) a frequency translator that shifts the bass portion by a frequency that is an integer multiple of the fundamental frequency estimated by the estimator, thereby providing a virtual bass signal; (f) an adder having (i) inputs coupled to the original audio signal and to the virtual bass signal and (ii) an output; and (g) an audio output device coupled to the output of the adder.

A sound bar having a mounting assembly configured to pivotally secure the bar. The sound bar includes an elongated, at least partially hollow, housing. The housing has a body extending between two opposing ends. A speaker array is positioned in the body. At least one speaker is positioned in at least one end of the bar. The end speaker(s) are preferably bass speakers in fluid communication with the hollow housing. A grill is preferably positioned over at least one of the housing ends. The grill preferably has a center hub affixed to an outer rim by spokes defining open spaces in the grill to facilitate the emission of sound. A mount is attached to the sound bar to secure the bar to a structure while allowing the bar to pivot along its longitudinal axis. Preferably, the mount is secured to the center hub of the grill.

The invention provides a system and a method for processing signals of virtual surrounds of four loudspeakers. The system comprises an input module, a first sound mixer, a second sound mixer, a third sound mixer, a fourth sound mixer, a digital and analog converter, a left front loudspeaker, a right front loudspeaker, a left rear loudspeaker and a right rear loudspeaker, wherein the first sound mixer is used for mixing signals of a left sound channel, a center channel and a mega bass sound channel so as to acquire a first sound channel signal; the second sound mixer is used for mixing signals of a right sound channel, the center sound channel and the mega bass sound channel so as to acquire a second sound channel signal, the third sound mixer is used for mixing signals of a left rear surround sound channel and the mega bass sound channel so as to acquire a third sound channel signal; the fourth sound mixer is used for mixing signals of a right rear surround sound channel and the mega bass sound channel so as to acquire a fourth sound channel signal; the digital and analog converter is used for respectively converting the first sound channel signal, the second sound channel signal, the third sound channel signal and the fourth sound channel signal into a first audio, a second audio, a third audio and a fourth audio; and the four loudspeakers are respectively used for playing the first audio to the fourth audio. By the system, cost is saved, surround sound effect is good and signal processing is simple and easy to realize.

The present invention relates to an audio control device using a multi-screen. The audio control device has a touch screen on which a bass axis and a treble axis for the sound of audio equipment are displayed in a multidimensional fashion, and on which a point selected by a user for audio control is inputted. An audio control section collectively calculates a bass value and a treble value corresponding to the point selected for audio control. A control section controls a speaker based on a result calculated by the audio control section.

Multiple speakers and isobaric chambers are used to enhance sound quality in an earbud. The earbud has a housing with a sound outlet, a first and second isobaric chambers that are in communication with the outlet. Two sound drivers in the housing are positioned to emit sound waves into the isobaric chambers separately. A divider is used to guide sound waves by creating an elongated channel in the second isobaric chamber. An ear hook has a third isobaric chamber and a third sound driver positioned to emit sound wave into the third isobaric chamber. The third isobaric chamber is in communication with the outlet through the second isobaric chamber.

Provided are, among other things, systems, methods and techniques for processing an audio signal to add virtual bass. In one representative embodiment, an apparatus includes: (a) an input line that inputs an original audio signal; (b) a bass extraction filter that extracts a bass portion of such original audio signal; (c) an estimator that estimates a fundamental frequency of a bass sound within such bass portion; (d) a frequency translator that shifts the bass portion by a positive frequency increment that is an integer multiple of the fundamental frequency estimated by the estimator, thereby providing a virtual bass signal; (f) an adder having (i) inputs coupled to the original audio signal and to the virtual bass signal and (ii) an output; and (g) an audio output device coupled to the output of the adder.

A passive radiator has an arcuate contour that follows the contour of the surface where the passive radiator is mounted. The component may be a television set, audio component, high fidelity loudspeaker, home theater loudspeaker, subwoofer, etc. The arcuate contour of the passive radiator may be convex, parabolic, hyperbolic, or a combination thereof. Furthermore, the convex surface may be cylindrical, spherical or another contour depending on surface contour of the enclosure where it is mounted. The passive radiator rim shape may be circular, rounded rectangular, ovular, elliptical or any other suitable shape. A contoured passive radiator of relatively large size can be mounted on a relatively small TV set, for example a contoured passive radiator equivalent to 8″ diameter for a small television set of 14″, thus producing a better bass sound. The contoured passive radiator has wider sound directivity, hence reducing the irregularity of the SPL of the bass sound. Compared to a bass reflex system, a passive radiator does not produce turbulent sound as well as reflected sound from inside the enclosure.

The invention relates to a depth-of-field analysis system for a pressure-resistant tank, and the system comprises a vertical piano component which comprises strings, an iron skeleton, a top plate, anda soundboard, and the strings are divided into three groups: high-pitch-area strings, middle-pitch-area strings, and low-pitch-area strings, wherein the high-pitch area strings are three strings pertone, the middle-pitch area strings are two strings per tone, and the low-pitch area strings are one string per tone; the high-pitch area strings and the middle-pitch area strings are both bare strings, and the low-pitch area strings are made by winding steel wires around copper wires. The iron skeleton is of a rectangular structure, and the soundboard is composed of a resonance board, a wood aiding board, a soundboard frame and a string code. And the parameter extraction equipment is connected with the pressure-resistant tank identification equipment and is used for extracting the depth of field of the pressure-resistant tank target in the instant sharpening image and sending a distance over-close signal when the depth of field is less than or equal to a preset depth of field threshold value, otherwise, sending a distance reliable signal. According to the invention, chemical hidden dangers and explosion hidden dangers brought to piano equipment by the pressure-resistant tank are eliminated.

A disclosed coaxial audio speaker may include a treble sound unit and a bass sound unit co-axially surrounding the treble sound unit. The bass sound unit may be in form of a single magnetic gap mechanism and have a magnetic-conductive base. The magnetic-conductive base may be with an auxiliary magnetic adjoining space and a coil movement space adjacent to the auxiliary magnetic adjoining space. A magnet, a vibrating vocal tone diaphragm along with a wiring board may be disposed within the coil movement space. A bass vibration audio source point and a treble vibration audio source point may be at the same horizontal level. Therefore, the size of the audio speaker may be reduced. And the broader electricity adjustability may be achieved as the bass vibration audio source point and the treble vibration audio source point may be horizontally aligned.

The invention provides a sound production device, which comprises a shell and a vibration assembly, and is characterized in that the vibration assembly comprises a diaphragm and a voice coil, the voice coil is of a hollow columnar structure, and the diaphragm is combined on one end surface of the voice coil; the loudspeaker further comprises a system stabilizing part. The system stabilizing part is combined on the end face of the voice coil or combined on the side wall of the voice coil. The system stabilizing part is of a linear structure, is formed by winding a metal wire, and comprises a first connecting part connected with the voice coil, a deformation part and a second connecting part connected with the shell. The invention further provides electronic equipment which comprises the sound production device. By adopting the sounding device with the structure, the voice coil cannot be polarized under the condition of large displacement, and the free vibration of the voice coil cannotbe hindered by the system stabilizing part with the novel structure. The electronic equipment adopting the sound production device has a good bass effect and good acoustic performance.

To improve upon a method of adjusting at least one filter parameter such as the mid-frequency of at least one filter unit provided with a playback system for audio signals, this filter unit being provided in particular for at least one digital equalizer assigned to the playback system, as well as an associated playback system so as to achieve automatic optimization of an acoustically correct bass level boosting,[a] first the acoustic frequency response is determined,[b] then a cutoff frequency below which the sound pressure falls below a sound pressure threshold level based on the average sound pressure is determined, and[c] next the filter parameter(s) of the filter unit is / are adjusted automatically, so that the mid-frequency of the filter unit is just above the cutoff frequency thus determined.

The invention relates to a loudspeaker system or device configured such that the sound field generated by the system or device is controllable. The system or device comprises Left (16, 18; 41, 43) and Right (15, 17; 42, 46) loudspeaker arrangements configured for radiating at least mid and high frequency sounds to the surroundings (R) and for controlling the sound radiation pattern (21, 22, 23, 24, 25, 26) of the left and right loudspeaker arrangements, respectively, such that the beam width and / or direction of the main lobe of the directivity pattern for the respective Left and Right loudspeaker arrangements can be varied; and at least one signal processor configured to process the signals to be provided to the loudspeakers of the respective loudspeaker arrangements such that the directional characteristics of the loudspeakers in each respective arrangement can be varied. The system or device may further comprise a low frequency arrangement comprising an arrangement of one or more loudspeakers (11, 12, 13, 14, 37) mounted in an enclosure (1) and configured such that the loudspeakers radiates sound energy to the surroundings (R). The low frequency arrangement may be configured as a bass-reflex enclosure with a wide port region. By means of the system or device according to the invention, the resulting directional characteristic of the system or device can be adapted to numerous specific use situations, for instance to obtain a stereo-stabilizing effect on a perceived sound image.

The invention relates to a sound box based on an oppositely buckled passive radiator. The sound box comprises a prolate box body, a high pitch loudspeaker mounting hole and a mid-bass loudspeaker mounting hole distributed along the length direction of the box body are opened in the top of the box body, a high pitch loudspeaker unit is mounted in the high pitch loudspeaker mounting hole, and a mid-bass loudspeaker unit is mounted in the mid-bass loudspeaker mounting hole; a passive radiator unit is mounted on the right side of the mid-bass loudspeaker unit through a radiator bracket, and the central axial line of the passive radiator unit is mutually parallel to the central axial lines of the high pitch loudspeaker unit and the mid-bass loudspeaker unit; the radiator bracket is provided with two sound outlets which are symmetrically arranged at 180 degrees, the two sound outlets respectively face to front and back side faces of the box body, and sound outlet holes communicated with the sound outlets are respectively formed in the front and back side faces of the box body. The sound box provided by the invention both has the advantages of the passive radiator sound box and can perfect the defects of poor vertical transient stability, high cut-off frequency and large total loss Ql value, so as to ensure a good sound effect for the sound box.

A music piece analyzer includes: a beat-position-acquiring-unit configured to detect beat positions in music piece data; a snare drum detector configured to detect sounding positions of a snare drum in the music piece data; a bass drum detector configured to detect sounding positions of a bass drum in the music piece data; a one-beat-shift-determination-unit configured to determine whether a bar beginning of the music piece data is shifted by one beat based upon the sounding positions of the snare drum detected by the snare drum detector; a two-beat-shift-determination-unit configured to determine whether the bar beginning of the music piece data is shifted by two beats on a basis of the sounding positions of the bass drum detected by the bass drum detector; and a bar-beginning-setting-unit configured to set the bar beginning of the music piece data on a basis of results determined by the one-beat-shift-determination-unit and the two-beat-shift-determination-unit.

The invention provides a zeolite spherical porous sound absorption particle, and application thereof in a mobile phone loudspeaker system. The zeolite spherical porous sound absorption particle comprises zeolite porous particles and an adhesive; the zeolite porous particles are bonded together by the adhesive to form the porous spherical particle with abundant macroporous channels; and the main elements of the zeolite porous particles are silicon, oxygen and aluminum, and the mass ratio of silicon to aluminum is at least 150. As a sound absorption material, the zeolite spherical porous sound absorption particle can effectively solve the powder falling problem and the irreversible aging problem caused by high-temperature and high-humidity conditions, the reduction amplitude of the resonant frequency of the mobile phone loudspeaker is increased towards the lower frequency, and the bass effect is obviously improved; and the resonant space is virtually increased, and the resonant frequency of the loudspeaker can be reduced by 100 Hz or above.

The embodiment of the invention relates to a rotation sound box, which comprises a base, a bass box body, a bass horn, an inverted tube, a frequency divider, a mid-high-pitch sound box, a high-pitch horn and a mid-pitch horn, wherein the bass box body is arranged above the base; the upper surface of the bass box body is provided with a first mounting groove, and a bearing is embedded in the first mounting groove; the upper surface of the bass box body is provided with multiple ball fixing grooves; balls are arranged in the ball fixing grooves; the mid-high-pitch sound box is arranged above the bass box body; the lower surface of the mid-high-pitch sound box is provided with a second mounting groove; the other end of the bearing is embedded in the second mounting groove; the lower surface of the mid-high-pitch sound box is provided with a sliding rail; angular displacement is generated between the bass box body and the mid-high-pitch sound box through the bearing; and friction is generated between the balls and the sliding rail, dam movement is generated. A vertical separate structure is adopted, the upper mid-high-pitch sound box can rotate horizontally, good sound effects are realized, and requirements of a user are met.

A bass management system and method for mitigating bass management errors by using explicit information available in the object audio rendering process and deriving the correct subwoofer contributionfor each audio object. Embodiments of the bass management system and method are used to maintain the correct balance of the bass reproduced by the subwoofer relative to the sound coming out of the other speakers. The system and method are useful for a variety of different speaker configurations, including speaker configurations having different speaker sub-zones. Power-normalized gain coefficientsfor each speaker are combined and the power of the combined gain coefficients is computed and used to obtain a power- preserving subwoofer contribution coefficient. This subwoofer contribution coefficient is applied to the bass portion of the audio signal and audio objects to determine the contribution of a particular subwoofer.

An audio compensating device comprises a left input end and a right input end which are respectively used for receiving a left channel sound input signal and a right channel sound input signal that are output by a player. The audio compensating device also comprises a left output end and a right output end which are respectively used for outputting the left channel sound input signal and the right channel sound input signal to an earphone. The audio compensating device further comprises a frequency compensating unit. The frequency compensating unit is coupled between the left and right input ends and the left and right output ends, is used for selecting the low range component of left and right channel sound input signals which are input from the left input end and the right input end, and crossly couples the low range component to the left and right channel sound input signals after amplifying and adjusting amplitude. The audio compensating device can improve the bass effect of soundoutput from the earphone and can be realized with a simple analog circuit.

The invention discloses electronic equipment which comprises a first folding component and a second folding component, the first folding component is connected with the second folding component, the first folding component comprises a sound production module, and the second folding component is provided with an expansion cavity; the sound production module comprises a module shell and a sound production main body arranged in the module shell, and the sound production main body divides the module shell into an acoustic front cavity and an acoustic rear cavity; the acoustic rear cavity is provided with a first opening, the first opening is provided with a first plugging part, and the expansion cavity is provided with a second opening; the first plugging part can avoid at least part of the first opening, and the acoustic rear cavity is communicated with the expansion cavity through the first opening and the second opening. According to the scheme, the problem of poor bass performance of the sounding module of the existing electronic equipment can be solved.

Sound processing systems have been developed that create a surround effect without quality degradation experienced by known sound processing systems in non-optimum listening environments. The sound processing systems may include matrix decoding systems that manipulate input signals prior to converting them into a number of output signals so that the output signals are a function of a greater number of input signals. These sound processing systems may also or alternately include a base management system that from the input signals preserves the low frequency components of the input signals in separate channels. Both the matrix decoding systems and base management systems may also produce additional signals. Further, the matrix decoding and base management systems may be implemented separately or jointly in vehicular sound systems.

A loudspeaker unit for producing sound at bass frequencies an array of two or more diaphragms. The first radiating surface and the second radiating surface are located on opposite faces of the diaphragm, and one or more of the diaphragms are included in a first subset of the diaphragms and one or more of the diaphragms are included in a second subset of the diaphragms; a plurality of drive units.

The invention relates to the technical field of sound equipment, in particular to wireless charging sound box. The wireless charging sound box comprises a main body, an upper shell, an upper cover, aloudspeaker and a wireless PCBA, the upper shell is mounted at the top of the main body; a control panel is arranged at the bottom of the rear side of the main body; the left and right side walls of the main body are respectively provided with sound outlets. The wireless PCBA is installed in the main body, an induction coil is installed at the top of the wireless PCBA, an inner shell is installedbelow the wireless PCBA, loudspeakers are installed on the left side wall and the right side wall of the inner shell respectively, a sound outlet pipe is arranged between the main body and the inner shell, and the two ends of the sound outlet pipe penetrate through the sound outlet pipe and the side wall of the main body respectively. The sound box provided by the invention is rich in bass and good in bass analysis capability; and the wireless charging function is achieved, mobile equipment such as a mobile phone can be charged in a wireless mode, and high applicability is achieved.

The invention discloses a sound production device and an earphone, and the sound production device comprises a shell, a high-pitch unit and a low-pitch unit; the high-pitch unit is fixed to the shell and located in the shell, the high-pitch unit comprises a magnetic conduction shell, a magnetic conduction vibrating diaphragm and a high-pitch magnetic circuit system, the magnetic conduction vibrating diaphragm and the high-pitch magnetic circuit system are arranged in the magnetic conduction shell, and the magnetic conduction vibrating diaphragm is suspended in the high-pitch magnetic circuit system. The high pitch magnetic circuit system is used for generating an alternating electromagnetic field to drive the magnetic conductive diaphragm to vibrate. The bass unit is fixed with the shell and located in the shell, the bass unit comprises a bass magnetic circuit assembly, a bass vibrating diaphragm and a bass voice coil connected with the bass vibrating diaphragm, a bass magnetic gap for the insertion of the bass voice coil is formed between the bass magnetic circuit assembly and the magnetic conductive shell, and the bass unit and the treble unit are coaxially arranged. According to the sound production device, the high-frequency performance and the low-frequency performance are both considered, the sound-electricity conversion efficiency of the high-pitch unit is high, the occupied space of the sound production device in the earphone is reduced, and the magnetic circuit efficiency is improved.

The invention discloses a dual-drive full-frequency bone conduction loudspeaker, and relates to the technical field of bone conduction audio transmission. The problems of lack of sound low-frequency output and high F0 value are solved. The dual-drive full-frequency bone conduction loudspeaker specifically comprises a magnet part, a sound body part and an elastic sheet supporting assembly part, themagnet part comprises U-shaped iron, a magnet, a washer sheet, an auxiliary magnet and an auxiliary washer sheet, and the U-shaped iron, the magnet, the washer sheet, the auxiliary magnet and the auxiliary washer sheet adopt a double-magnetic-circuit design; the voice body part comprises a voice coil, a fixing frame, an auxiliary voice coil and an auxiliary fixing frame. According to the invention, the structural design characteristics of double voice coils and double magnetic circuits are adopted; the vibration amplitude of the product can be increased; therefore, the sensitivity of sound and the effect of bass are effectively improved, the bass of the product is thicker and more comfortable, the elastic sheet supporting assembly part adopts a suspension supporting design, and the connected elastic sheet can be designed and modified according to requirements so as to change the amplitude of the elastic sheet supporting assembly part in the cavity and achieve the effect required by aclient.

A method for manufacturing a novel Qin zither relates to the field of music instruments. A front bridge and a rear bridge are arranged on the upper surface of a panel, zither holes are formed in the outer sides of the front bridge and the rear bridge, zither strings are arranged between the corresponding left zither holes and right zither holes and penetrate through grooves in the tops of movable tuning keys on a panel, a front plug and a rear plug are arranged on the left side and the rear side of the panel, an inner side plate and an outer side plate are arranged on the front side and the rear side of the panel, and a string shaft plate is arrange on the lower surface of the panel and is arranged at the position corresponding to the rear bridge. Thin, thick and neat strip-shaped tune grooves graved by a manual graver are formed in the lower surface of the panel, and tune holes formed by connecting circles with triangles are formed in a bottom plate. According to the method for manufacturing the novel Qin zither, acoustic space is enlarged, sound conduction is facilitated, and sound resonance is increased, so that high pitch is clear and melodious, bass is deep, tone quality is pure, and timbre is beautiful.