Audio phase modulation method, device, equipment and storage medium

Abstract

The present application discloses an audio phase modulation method, apparatus, device, and storage medium, belonging to the technical field of electronic equipment. The method is applied to an electronic device, the electronic device including a digital speaker, the digital speaker including N sound-emitting units, and the method comprising: obtaining a first analog audio signal; decomposing the first analog audio signal into N second analog audio signals, the superposition amplitude of the N second analog audio signals being equal to the amplitude of the first analog audio signal; and controlling the N sound-emitting units to play the N second analog audio signals respectively based on a target sequence, the N sound-emitting units corresponding to the N second analog audio signals.

Description

Technical Field

[0001] The present application belongs to the technical field of electronic equipment, and specifically relates to an audio phase modulation method, apparatus, device and storage medium. Background Art

[0002] With the vigorous development of mobile Internet and the increasing popularity of electronic devices, users have higher and higher requirements for electronic devices, and sound quality is one of the device performances that users value.

[0003] To improve the sound quality of electronic devices, conventional speakers can be used to adjust the phase of the input signal to enhance low-frequency sound effects, a technique known as virtual bass. However, this approach increases audio power consumption and places high demands on the battery capacity of electronic devices, making it less practical. Summary of the Invention

[0004] The purpose of the embodiments of the present application is to provide an audio phase modulation method, apparatus, device and storage medium, which can solve the problem of low applicability of device sound quality improvement methods in related technologies.

[0005] In a first aspect, an embodiment of the present application provides an audio phase modulation method, which is applied to an electronic device, the electronic device including a digital speaker, the digital speaker including N sound-emitting units, the method including: obtaining a first analog audio signal; decomposing the first analog audio signal into N second analog audio signals, the superimposed amplitude of the N second analog audio signals being equal to the amplitude of the first analog audio signal; controlling the N sound-emitting units to play the N second analog audio signals respectively based on a target order, the N sound-emitting units corresponding to the N second analog audio signals.

[0006] In second aspect, an embodiment of the present application provides an audio phase adjustment device, which is applied to an electronic device, the electronic device including a digital speaker, the digital speaker including N sound-emitting units, and the device including: an acquisition module for acquiring a first analog audio signal; a decomposition module for decomposing the first analog audio signal into N second analog audio signals, the superimposed amplitude of the N second analog audio signals being equal to the amplitude of the first analog audio signal; a phase adjustment module for controlling the N sound-emitting units to play the N second analog audio signals respectively based on a target order, the N sound-emitting units corresponding to the N second analog audio signals.

[0007] In a third aspect, an embodiment of the present application provides an electronic device comprising a processor, a memory, and a program or instruction stored in the memory and executable on the processor, wherein when the program or instruction is executed by the processor, the steps of the audio phase modulation method of the first aspect are implemented.

[0008] In a fourth aspect, an embodiment of the present application provides a readable storage medium, which stores a program or instruction. When the program or instruction is executed by a processor, the steps of the audio phase modulation method of the first aspect are implemented.

[0009] In a fifth aspect, an embodiment of the present application provides a chip, which includes a processor and a communication interface, the communication interface and the processor are coupled, and the processor is used to run programs or instructions to implement the steps of the audio phase modulation method as in the first aspect.

[0010] In a sixth aspect, an embodiment of the present application provides a computer program product, which is stored in a storage medium and executed by at least one processor to implement the steps of the audio phasing method as described in the first aspect.

[0011] In an embodiment of the present application, when a first analog audio signal is obtained, N second analog audio signals can be obtained by decomposing the first analog audio signal, and the superimposed amplitude of the N second analog audio signals is equal to the amplitude of the first analog audio signal. The N sound-emitting units of the digital speaker work independently. The present application can control the N sound-emitting units of the digital speaker to play the corresponding second analog audio signals respectively based on the target sequence. Since different second analog audio signals are played by different sound-emitting units and the playback timings are different, the phase adjustment of the second analog audio signal can be achieved based on the different playback timings of the N second analog audio signals to enhance the low-frequency sound effect. Compared with directly adjusting the phase of the input signal, there is no need to increase audio power consumption and battery capacity, and the device has higher applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic diagram of an example of an audio phase modulation method provided in the related art;

[0013] Figure 2 1 is a flow chart of an audio phase modulation method provided in one embodiment of the present application;

[0014] Figure 3 is a schematic diagram of an example of a digital speaker provided by an embodiment of the present application;

[0015] Figure 4 is a schematic diagram of an example of a digital speaker provided by another embodiment of the present application;

[0016] Figure 5 is a schematic diagram of an example of an audio phase modulation effect provided by an embodiment of the present application;

[0017] Figure 6 is a schematic diagram of an example of a digital speaker provided in yet another embodiment of the present application;

[0018] Figure 7is a schematic diagram of an example of an audio phase modulation effect provided by another embodiment of the present application;

[0019] Figure 8 This is a structural diagram of an audio phase modulation device provided in an embodiment of the present application;

[0020] Figure 9 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application;

[0021] Figure 10 This is a schematic diagram of the hardware structure of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0022] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0023] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0024] As mentioned in the background technology, in order to improve the sound quality of electronic devices, the phase of the input signal can be adjusted on the basis of traditional speakers to enhance the low-frequency sound effect, that is, virtual low-frequency. For example, the input signal includes a 90Hz fundamental signal and a 180Hz harmonic signal. The 90Hz fundamental signal is a drum sound, such as Figure 1 As shown, by delaying the 180Hz harmonic signal, the input signal is phase-modulated, creating the illusion of a wider low-frequency sound field and a more elastic drum sound. However, this virtual low-frequency method increases audio power consumption and places high demands on the battery capacity of electronic devices, making it less practical.

[0025] In response to the problems arising in the related art, an embodiment of the present application provides an audio phase adjustment method. When a first analog audio signal is obtained, N second analog audio signals can be obtained by decomposing the first analog audio signal. The superimposed amplitude of the N second analog audio signals is equal to the amplitude of the first analog audio signal. The N sound-emitting units of the digital speaker work independently. The present application can control the N sound-emitting units of the digital speaker to play the corresponding second analog audio signals respectively based on the target sequence. Since different second analog audio signals are played by different sound-emitting units and the playback timing is different, the phase adjustment of the second analog audio signal can be achieved based on the different playback timing of the N second analog audio signals, thereby improving the low-frequency sound effect and the sound quality of the device. Compared with directly adjusting the phase of the input signal, there is no need to increase the audio power consumption and battery capacity, and the device has higher applicability, which solves the problem of low applicability of the device sound quality improvement method in the related art.

[0026] The audio phase modulation method provided in the embodiment of the present application is described in detail below with reference to specific embodiments and application scenarios in conjunction with the accompanying drawings.

[0027] Figure 2 The flowchart of the audio phase modulation method provided in one embodiment of the present application is shown in FIG. The audio phase modulation method may be performed by an electronic device including a digital speaker having N sound-emitting units, where N is a positive integer. It should be noted that the aforementioned performing entity does not constitute a limitation of the present application.

[0028] like Figure 2 As shown, the audio phase modulation method provided in the embodiment of the present application may include steps 210 to 230.

[0029] Step 210: Acquire a first analog audio signal.

[0030] Specifically, when receiving an input signal, the electronic device reconstructs the input signal to obtain a first analog audio signal.

[0031] Step 220: Decompose the first analog audio signal into N second analog audio signals.

[0032] Wherein, N is a positive integer, and the superimposed amplitude of the N second analog audio signals is equal to the amplitude of the first analog audio signal.

[0033] Exemplarily, N is 2, the amplitude of the first analog audio signal P is H, and the electronic device can split the first analog audio signal A into second analog audio signals p1 and p2, the amplitude corresponding to p1 is h1, the amplitude corresponding to p2 is h2, then H=h1+h2.

[0034] Step 230 : Control the N sound-emitting units to play the N second analog audio signals respectively based on the target sequence.

[0035] Among them, the target order is the playback order of the N second analog audio signals. The target order can be set according to specific needs, and this application does not make any specific restrictions here; the N sound units correspond to the N second analog audio signals.

[0036] For example, a digital speaker includes sound units A and B. An electronic device splits a first analog audio signal A into second analog audio signals p1 and p2. The electronic device can first control sound unit A to play p1, and then, 1 millisecond later, control sound unit B to play p2. The second analog audio signal p2 plays 1 millisecond after p1. Compared to playing p1 and p2 simultaneously, the playback time of p2 is delayed, effectively adjusting the phase of p2.

[0037] The audio phase adjustment method provided in the embodiment of the present application, when a first analog audio signal is obtained, can obtain N second analog audio signals by decomposing the first analog audio signal, and the superimposed amplitude of the N second analog audio signals is equal to the amplitude of the first analog audio signal. The N sound-emitting units of the digital speaker work independently. The present application can control the N sound-emitting units of the digital speaker to play the corresponding second analog audio signals respectively based on the target sequence. Since different second analog audio signals are played by different sound-emitting units and the playback timing is different, the phase adjustment of the second analog audio signal can be achieved based on the different playback timing of the N second analog audio signals, thereby improving the low-frequency sound effect and the sound quality of the device. Compared with directly adjusting the phase of the input signal, there is no need to increase the audio power consumption and battery capacity, and the device has higher applicability.

[0038] The above steps 210 to 230 are described in detail below with reference to specific embodiments.

[0039] In step 210 , a first analog audio signal is obtained.

[0040] In one embodiment, the input signal is a digital signal, and the digital speaker may use a digital sound reconstruction (DSR) technology to reconstruct the front-end input digital signal into an analog audio signal to obtain a first analog audio signal.

[0041] In one embodiment, the digital speaker is manufactured using a micro-electro-mechanical system (MEMS) process, integrates a driver chip, and contains multiple high-frequency vibration units (pixels) to form an array.

[0042] For example, Figure 3 As shown, the digital speaker 301 includes multiple high-frequency vibration units, which are arranged in an array.

[0043] In one embodiment, multiple high-frequency vibration units can operate independently, each generating vibration pulses at ultrasonic frequencies. The entire device uses Digital Sound Reconstruction (DSR) technology to reconstruct the digital signal input from the front end into an analog audio signal. At each sampling point of the Pulse Code Modulation (PCM) analog audio signal, the required number of high-frequency vibration units is determined by the amplitude of the corresponding analog audio signal. The energy of the required sound signal is achieved by accumulating the high-frequency pulse energy of multiple high-frequency vibration units. Different amplitudes require different numbers of high-frequency vibration units.

[0044] In the embodiment of the present application, the analog audio signal is reconstructed directly from the I2S signal on the built-in audio bus of the digital integrated circuit into an audio signal. Since the single unit has a built-in driving microelectronic device (Integrated Circuit Chip, IC), it does not require the participation of the existing speaker amplifier. In addition, the high-frequency pulse accumulation is used. When the single unit is working, it does not need the back cavity of the traditional speaker, which can significantly reduce the volume and free up more space for smart terminal devices. Compared with traditional speakers, the advantages of digital speakers are: no DAC chip is required; no additional amplifier chip is required; the signal is emitted via high-frequency pulses, which is highly energy-efficient; lower harmonic distortion; no hardware clipping or saturation distortion; and a wide frequency response range.

[0045] In step 220 , the first analog audio signal is decomposed into N second analog audio signals.

[0046] In some embodiments of the present application, step 220 may specifically include: when the first analog audio signal is a harmonic signal, decomposing the harmonic signal into N sub-harmonic signals to obtain N second analog audio signals; or, when the first analog audio signal is a fundamental wave signal, decomposing the fundamental wave signal into N sub-fundamental wave signals to obtain N second analog audio signals.

[0047] In one example, N is 5, the first analog audio signal is a 180 Hz harmonic signal, and the electronic device can decompose the first analog audio signal into 5 sub-harmonic signals a1-a5, which are also the second analog audio signal. Figure 4 As shown in FIG, the digital speaker may include five sound units AE. Each sound unit has a corresponding sub-harmonic signal. By controlling the sound units AE to play the sub-harmonic signals a1-a5 in sequence, and the playing time interval between two adjacent sub-harmonic signals is 1ms, the following is achieved: Figure 5The phase adjustment effect of the sub-harmonic signals a2-a5 is shown.

[0048] In another example, N is 2, and the first analog audio signal is an 80 Hz fundamental wave signal. The electronic device can decompose the first analog audio signal into two sub-fundamental wave signals b1 and b2, which are also the second analog audio signal. Figure 6 As shown, the digital speaker may include two sound units F and G. Each sound unit has a corresponding sub-fundamental wave signal. By controlling the sound unit F to play the sub-harmonic signal b1, and after an interval of 2ms, by controlling the sound unit G to play the sub-harmonic signal b2, the following is achieved. Figure 7 The phase adjustment effect of the sub-harmonic signal b2 is shown.

[0049] In an embodiment of the present application, by decomposing a harmonic signal and sequentially controlling N sound-emitting units to play N sub-harmonic signals, the low-frequency harmonics of the electronic device can be phase-modulated based on the characteristics of digital speakers, creating the illusion of a widened low-frequency sound field for the human ear, increasing the diversity of phase-modulation methods, and providing richer and better low-frequency effects compared to traditional phase-modulation methods for input signals. By decomposing a fundamental signal and sequentially controlling N sound-emitting units to play N sub-fundamental signals, a near-dual-speaker phase-modulation or multi-speaker phase-modulation can be achieved, simulating the low-frequency enhancement effect of dual or even multiple speakers, thereby improving sound quality.

[0050] In some embodiments of the present application, step 220 may specifically include: decomposing the first analog audio signal into N second analog audio signals with different amplitudes.

[0051] Among them, the amplitudes of the N second analog audio signals are in an increasing or decreasing relationship, that is, after the N second analog audio signals are sorted in order of amplitude from large to small or from small to large, the amplitude difference between two adjacent second analog audio signals is a fixed value. This fixed value can be set according to specific needs, and this application does not make any specific restrictions on this.

[0052] Exemplarily, the fixed value is 8, and the second analog audio signal is a 180 Hz harmonic signal. The electronic device can decompose the 180 Hz harmonic signal into 5 sub-harmonic signals with amplitudes of 100 Hz, 108 Hz, 116 Hz, 124 Hz, and 132 Hz, respectively, to obtain 5 second analog audio signals with different amplitudes.

[0053] In an embodiment of the present application, by decomposing a first analog audio signal into N second analog audio signals with different amplitudes, when controlling N sound-emitting units to successively play N second analog audio signals with increasing or decreasing amplitudes, based on the continuous increase or decrease in the amplitude of the playback signal, an audio playback effect with a gradually rising or falling pitch can be provided, thereby improving the diversity of audio playback methods of the first analog audio signal.

[0054] In step 230 , N sound emitting units are controlled to play N second analog audio signals respectively based on a target sequence.

[0055] In some embodiments of the present application, the target sequence includes a sequential playback order of N second analog audio signals, and the N playback start times corresponding to the N second analog audio signals are separated by a first duration.

[0056] The first duration may be a preset duration or a duration customized by the user.

[0057] Exemplarily, the first duration can be 1ms, N is 5, the first analog audio signal is a 180Hz harmonic signal, and after the electronic device decomposes the first analog audio signal into 5 sub-harmonic signals a1-a5, it controls the 5 sound units to play the sub-harmonic signals a1-a5 respectively in chronological order, and the playback time interval between two adjacent sub-harmonic signals is 1ms.

[0058] In an embodiment of the present application, when the electronic device plays N second analog audio signals, it can control the N sound-emitting units to play them in a sequential order, and it only needs to control the start playback time interval of two adjacent second analog audio signals to be the first time length. In this way, the phase adjustment of the second analog audio signal can be simply and effectively achieved, and the low-frequency sound effect can be improved without increasing audio power consumption and battery capacity, and the device has higher applicability.

[0059] In some embodiments of the present application, before step 230, the method may further include: dividing all high-frequency vibration units in the digital speaker into N areas; step 230 may specifically include: based on the target order, successively controlling the high-frequency vibration units in the N areas to play the corresponding second analog audio signal.

[0060] Specifically, the electronic device can divide all high-frequency vibration units into N areas. The number of high-frequency vibration units in each area may be the same or different, and this application does not make any specific restrictions on this; the high-frequency vibration unit in each area is used to play the corresponding second analog audio signal, that is, the number of second analog audio signals is determined according to the number of divided areas, and the N areas have a one-to-one correspondence with the N sound-emitting units and the N second analog audio signals.

[0061] For example, Figure 4 As shown, the electronic device can divide all high-frequency vibration units in the digital speaker into five areas, and the high-frequency vibration units in each area are sound-emitting units. Based on this, the electronic device can sequentially control sound-emitting units AE to play their corresponding second analog audio signals. For example, after controlling sound-emitting unit A to play the second analog audio signal a1, it controls sound-emitting unit B to play the second analog audio signal a2, and so on, until it controls sound-emitting unit E to play the second analog audio signal a5.

[0062] In an embodiment of the present application, by dividing all high-frequency vibration units of the digital speaker into N areas, and the high-frequency vibration units in each area are used to play the corresponding second analog audio signal, the phase adjustment of the second analog audio signal can be achieved by adjusting the order in which the high-frequency vibration units in different areas play the corresponding second analog audio signals, thereby improving the diversity of audio phase adjustment methods.

[0063] In some embodiments of the present application, step 220 may specifically include: when the number of high-frequency vibration units in the N regions is equal, decomposing the first analog audio signal into N second analog audio signals with the same amplitude.

[0064] Specifically, all high-frequency vibration units in the digital speaker can be pre-divided into N areas on average, that is, the number of high-frequency vibration units in the N areas is equal. Accordingly, the first analog audio signal can be decomposed into N second analog audio signals with the same amplitude, so that each second analog audio signal has a corresponding sound unit.

[0065] For example, if all high-frequency vibration units in the digital speaker are divided into Figure 4 The AE shown has 5 areas in total, and the high-frequency vibration units in each area are equal, so the electronic device can decompose the 180Hz harmonic signal into Figure 5 There are five sub-harmonic signals a1-a5 shown with the same amplitude.

[0066] In the embodiment of the present application, since the energy of the acoustic signal required for the second analog audio signals of different amplitudes is different, and the energy of the acoustic signal is obtained by accumulating the high-frequency pulse energy of multiple high-frequency vibration units corresponding to each sound-emitting unit. Based on this, when the number of high-frequency vibration units in each area is equal, that is, when the high-frequency vibration units corresponding to each sound-emitting unit are equal, the high-frequency pulse energy that each sound-emitting unit can provide is equal. In this scenario, the electronic device decomposes the first analog audio signal into N second analog audio signals of equal amplitude, ensuring that each second analog audio signal can match the corresponding sound-emitting unit, and the accumulated high-frequency pulse energy of the high-frequency vibration unit of the corresponding sound-emitting unit can reach the required energy of the second analog audio signal, thereby ensuring the output effect of the second analog audio signal. And because of the accumulation of high-frequency pulse energy, the single unit does not require the back cavity of a traditional speaker when working, which can greatly reduce the volume and make more space for electronic equipment.

[0067] In some embodiments of the present application, the amplitude of the first analog audio signal is a first amplitude, and step 220 may specifically include the following steps: determining N second amplitudes based on the first amplitude and the number of high-frequency vibration units in the N areas; and decomposing the first analog audio signal into N second analog audio signals based on the N second amplitudes.

[0068] Among them, the second amplitude is the amplitude of the second analog audio signal, and the first amplitude is the sum of N second amplitudes; the second amplitude is positively correlated with the number of high-frequency vibration units in the corresponding area, that is, the more high-frequency vibration units in the corresponding area, the larger the second amplitude, and the N second amplitudes can be the same or different.

[0069] In some embodiments, the above-mentioned positive correlation can be a positive proportional relationship. For example, if the number of high-frequency vibration units in region 1 is twice that of region 2, then the amplitude of the second analog audio signal corresponding to region 1 is twice the amplitude of the second analog audio signal corresponding to region 2.

[0070] For example, if a digital speaker includes 15 high-frequency vibration units, the 15 high-frequency vibration units are divided into area 1 and area 2, where the number of high-frequency vibration units in area 1 is 10 and the number of high-frequency vibration units in area 2 is 5. In this way, the electronic device can decompose the first analog audio signal into two second analog audio signals b1 and b2, where the amplitude of b1 is twice the amplitude of b2. When playing the second analog audio signal, the high-frequency vibration units in area 1 are controlled to play b1, and the high-frequency vibration units in area 2 are controlled to play b2.

[0071] In an embodiment of the present application, the number and corresponding amplitude of the second analog audio signal can be determined based on the division area of the high-frequency vibration unit in the digital speaker and the number of high-frequency vibration units in the area. Since the energy of the sound signal required for analog audio signals of different amplitudes is different, when decomposing the first analog audio signal, it is necessary to consider the sound signal energy that each sound-emitting unit can provide, that is, it is necessary to determine N second amplitudes based on the number of high-frequency vibration units in N areas. In this way, when playing the second analog audio signal of N second amplitudes, the second amplitude can be matched with the number of high-frequency vibration units in the corresponding area, so that the cumulative high-frequency pulse energy of the high-frequency vibration unit in each area can reach the required energy of the corresponding second analog audio signal, ensuring that the second analog audio signal can be played smoothly and the output effect is guaranteed.

[0072] It should be noted that the audio phase adjustment method provided in the embodiments of the present application can be executed by an audio phase adjustment device, or by a control module within the audio phase adjustment device that is configured to execute the audio phase adjustment method. In the embodiments of the present application, the audio phase adjustment device provided in the embodiments of the present application is described using the audio phase adjustment device executing the audio phase adjustment method as an example. The audio phase adjustment device is described in detail below.

[0073] Figure 8 This is a structural diagram of an audio phase modulation device provided by this application.

[0074] like Figure 8 As shown, an embodiment of the present application provides an audio phase adjustment device 800, which can be applied to an electronic device. The electronic device includes a digital speaker, and the digital speaker includes N sound units. The device 800 includes: an acquisition module 810, a decomposition module 820 and a phase adjustment module 830.

[0075] Among them, the acquisition module 810 is used to obtain the first analog audio signal; the decomposition module 820 is used to decompose the first analog audio signal into N second analog audio signals, and the superimposed amplitude of the N second analog audio signals is equal to the amplitude of the first analog audio signal; the phase modulation module 830 is used to control N sound units to play the N second analog audio signals respectively based on the target order, and the N sound units correspond to the N second analog audio signals.

[0076] The audio phase adjustment device provided in the embodiment of the present application can obtain N second analog audio signals by decomposing the first analog audio signal when a first analog audio signal is obtained, and the superimposed amplitude of the N second analog audio signals is equal to the amplitude of the first analog audio signal. The N sound-emitting units of the digital speaker work independently. The present application can control the N sound-emitting units of the digital speaker to play the corresponding second analog audio signals respectively based on the target sequence. Since different second analog audio signals are played by different sound-emitting units and the playback timings are different, the phase adjustment of the second analog audio signal can be achieved based on the different playback timings of the N second analog audio signals to enhance the low-frequency sound effect. Compared with directly phase-adjusting the input signal, there is no need to increase audio power consumption and battery capacity, and the device has higher applicability.

[0077] In some embodiments of the present application, the decomposition module 820 is specifically used to: when the first analog audio signal is a harmonic signal, decompose the harmonic signal into N sub-harmonic signals to obtain N second analog audio signals; or, when the first analog audio signal is a fundamental wave signal, decompose the fundamental wave signal into N sub-fundamental wave signals to obtain N second analog audio signals.

[0078] In some embodiments of the present application, the target sequence includes a sequential playback order of N second analog audio signals, and the N playback start times corresponding to the N second analog audio signals are separated by a first duration.

[0079] In some embodiments of the present application, the decomposition module 820 is specifically configured to decompose the first analog audio signal into N second analog audio signals with different amplitudes, wherein the amplitudes of the N second analog audio signals are in increasing or decreasing relationship.

[0080] In some embodiments of the present application, the device also includes: a division module for dividing all high-frequency vibration units in the digital speaker into N areas, where the N areas correspond to N sound-emitting units; the phase adjustment module 830 is specifically used to: based on the target order, successively control the high-frequency vibration units in the N areas to play the corresponding second analog audio signal.

[0081] In some embodiments of the present application, the decomposition module 820 is specifically used to: when the number of high-frequency vibration units in N areas is equal, decompose the first analog audio signal into N second analog audio signals with equal amplitudes.

[0082] In some embodiments of the present application, the amplitude of the first analog audio signal is a first amplitude, and the decomposition module 820 includes: a determination unit for determining N second amplitudes based on the first amplitude and the number of high-frequency vibration units in N areas, wherein the second amplitude is positively correlated with the number of high-frequency vibration units in the corresponding area; and a decomposition unit for decomposing the first analog audio signal into N second analog audio signals based on the N second amplitudes.

[0083] The audio phase modulation device provided in the embodiment of the present application can achieve Figure 1-Figure 7 To avoid repetition, the various processes implemented by the electronic device in the method embodiment are not described here.

[0084] The audio phase modulation device in the embodiment of the present application can be an electronic device, or a component, integrated circuit, or chip in the electronic device. The electronic device can be a terminal, or other devices other than a terminal. For example, the electronic device can be a mobile phone, a tablet computer, a laptop computer, a PDA, an in-vehicle electronic device, a mobile internet device (MID), an augmented reality (AR) / virtual reality (VR) device, a robot, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (PDA), etc. It can also be a server, a network attached storage (NAS), a personal computer (PC), a television (TV), a teller machine, or a self-service machine, etc., and the embodiment of the present application does not specifically limit it.

[0085] The audio phase modulation device in the embodiment of the present application may be a device having an operating system. The operating system may be an Android operating system, an iOS operating system, or other possible operating systems, which are not specifically limited in the embodiment of the present application.

[0086] Alternatively, as Figure 9 As shown, an embodiment of the present application further provides an electronic device 900, including a processor 901, a memory 902, and a program or instruction stored in the memory 902 and executable on the processor 901. When the program or instruction is executed by the processor 901, each process of the above-mentioned audio phase modulation method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it is not described here.

[0087] It should be noted that the electronic devices in the embodiments of the present application include the above-mentioned mobile electronic devices and non-mobile electronic devices.

[0088] Figure 10 A schematic diagram of the hardware structure of an electronic device according to an embodiment of the present application.

[0089] The electronic device 1000 includes but is not limited to components such as a radio frequency unit 1001 , a network module 1002 , an audio output unit 1003 , an input unit 1004 , a sensor 1005 , a display unit 1006 , a user input unit 1007 , an interface unit 1008 , a memory 1009 , and a processor 1010 .

[0090] It should be noted that the electronic device includes a digital speaker, and the digital speaker includes N sound-emitting units.

[0091] Those skilled in the art will understand that the electronic device 1000 may also include a power source (such as a battery) to power each component, and the power source may be logically connected to the processor 1010 through a power management system, thereby managing charging, discharging, and power consumption, etc. through the power management system. Figure 10 The electronic device structure shown in the figure does not constitute a limitation on the electronic device. The electronic device may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently, which will not be repeated here.

[0092] Among them, the processor 1010 is used to: obtain a first analog audio signal; decompose the first analog audio signal into N second analog audio signals, and the superimposed amplitude of the N second analog audio signals is equal to the amplitude of the first analog audio signal; control N sound-emitting units to play the N second analog audio signals respectively based on the target order, and the N sound-emitting units correspond to the N second analog audio signals.

[0093] In some embodiments of the present application, the processor 1010 is specifically used to: when the first analog audio signal is a harmonic signal, decompose the harmonic signal into N sub-harmonic signals to obtain N second analog audio signals; or, when the first analog audio signal is a fundamental wave signal, decompose the fundamental wave signal into N sub-fundamental wave signals to obtain N second analog audio signals.

[0094] In some embodiments of the present application, the target sequence includes a sequential playback order of N second analog audio signals, and the N playback start times corresponding to the N second analog audio signals are separated by a first duration.

[0095] In some embodiments of the present application, the processor 1010 is specifically configured to: decompose the first analog audio signal into N second analog audio signals with different amplitudes, wherein the amplitudes of the N second analog audio signals are in an increasing or decreasing relationship.

[0096] In some embodiments of the present application, the processor 1010 is also used to divide all high-frequency vibration units in the digital speaker into N areas, where the N areas correspond to N sound-emitting units; the processor 1010 is specifically used to: based on the target order, successively control the high-frequency vibration units in the N areas to play the corresponding second analog audio signal.

[0097] In some embodiments of the present application, the processor 1010 is specifically used to: when the number of high-frequency vibration units in N areas is equal, decompose the first analog audio signal into N second analog audio signals with equal amplitudes.

[0098] In some embodiments of the present application, the amplitude of the first analog audio signal is a first amplitude, and the processor 1010 is specifically used to: determine N second amplitudes based on the first amplitude and the number of high-frequency vibration units in N areas, wherein the second amplitude is positively correlated with the number of high-frequency vibration units in the corresponding area; and decompose the first analog audio signal into N second analog audio signals based on the N second amplitudes.

[0099] In an embodiment of the present application, when a first analog audio signal is obtained, N second analog audio signals can be obtained by decomposing the first analog audio signal, and the superimposed amplitude of the N second analog audio signals is equal to the amplitude of the first analog audio signal. The N sound-emitting units of the digital speaker work independently. The present application can control the N sound-emitting units of the digital speaker to play the corresponding second analog audio signals respectively based on the target sequence. Since different second analog audio signals are played by different sound-emitting units and the playback timings are different, the phase adjustment of the second analog audio signal can be achieved based on the different playback timings of the N second analog audio signals to enhance the low-frequency sound effect. Compared with directly adjusting the phase of the input signal, there is no need to increase audio power consumption and battery capacity, and the device has higher applicability.

[0100] It should be understood that in an embodiment of the present application, the input unit 1004 may include a graphics processing unit (GPU) 10041 and a microphone 10042, and the graphics processor 10041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 1006 may include a display panel 10061, and the display panel 10061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 1007 includes a touch panel 10071 and at least one of other input devices 10072. The touch panel 10071 is also called a touch screen. The touch panel 10071 may include two parts: a touch detection device and a touch controller. Other input devices 10072 may include, but are not limited to, a physical keyboard, keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.

[0101] The memory 1009 can be used to store software programs and various data. The memory 1009 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, N required application programs or instructions (such as sound playback, image playback, etc.), etc. In addition, the memory 1009 may include a volatile memory or a non-volatile memory, or the memory 1009 may include both volatile and non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM), and a direct memory bus random access memory (DRRAM). The memory 1009 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0102] Processor 1010 may include one or more processing units. Optionally, processor 1010 integrates an application processor and a modem processor. The application processor primarily handles operations related to the operating system, user interface, and application programs, while the modem processor primarily processes wireless communication signals, such as a baseband processor. It is understood that the modem processor may not be integrated into processor 1010.

[0103] The embodiment of the present application further provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, each process of the above-mentioned embodiment of the audio phase modulation method is implemented, and the same technical effect can be achieved. To avoid repetition, it is not described here.

[0104] The processor is the processor in the electronic device in the above embodiment. The readable storage medium includes a computer-readable storage medium. Examples of computer-readable storage media include non-transitory computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0105] An embodiment of the present application further provides a chip, which includes a processor and a communication interface. The communication interface and the processor are coupled, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned audio phase modulation method embodiment, and can achieve the same technical effects. To avoid repetition, they are not described here.

[0106] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0107] An embodiment of the present application provides a computer program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the above-mentioned audio phase modulation method embodiment, and can achieve the same technical effects. To avoid repetition, they are not described here.

[0108] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to being performed in the order shown or discussed, and may also include being performed in a substantially simultaneous manner or in the opposite order as involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0109] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), including a number of instructions for enabling a terminal (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods described in each embodiment of the present application.

[0110] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. An audio phase modulation method, characterized in that: Applied to an electronic device, the electronic device includes a digital speaker, the digital speaker includes N sound-emitting units, and the method includes: Acquire a first analog audio signal; Decomposing the first analog audio signal into N second analog audio signals, wherein the superimposed amplitude of the N second analog audio signals is equal to the amplitude of the first analog audio signal; controlling the N sound emitting units to respectively play the N second analog audio signals based on a target order, the N sound emitting units corresponding to the N second analog audio signals; The obtaining of the first analog audio signal includes: Reconstructing the digital signal input from the front end into an analog audio signal by the digital speaker using digital sound reconstruction technology to obtain the first analog audio signal; The digital speaker includes a plurality of high-frequency vibration units, each of which works independently; Dividing all the high-frequency vibration units in the digital speaker into N areas, wherein the N areas correspond to the N sound-emitting units; The controlling the N sound-emitting units of the digital speaker to respectively play the N second analog audio signals based on a target order includes: Based on the target sequence, the high-frequency vibration units in the N areas are controlled in sequence to play the corresponding second analog audio signals.

2. The method according to claim 1, characterized in that Decomposing the first analog audio signal into N second analog audio signals includes: In a case where the first analog audio signal is a harmonic signal, decomposing the harmonic signal into N sub-harmonic signals to obtain the N second analog audio signals; Alternatively, when the first analog audio signal is a fundamental wave signal, the fundamental wave signal is decomposed into N sub-fundamental wave signals to obtain the N second analog audio signals.

3. The method according to claim 1, characterized in that The target sequence includes a sequential playback order of the N second analog audio signals, and the N playback start times corresponding to the N second analog audio signals are spaced apart by a first duration.

4. The method according to claim 1, wherein Decomposing the first analog audio signal into N second analog audio signals includes: The first analog audio signal is decomposed into N second analog audio signals with different amplitudes, wherein the amplitudes of the N second analog audio signals are in an increasing or decreasing relationship.

5. The method according to claim 1, wherein Decomposing the first analog audio signal into N second analog audio signals includes: When the number of high-frequency vibration units in the N areas is equal, the first analog audio signal is decomposed into N second analog audio signals with equal amplitudes.

6. The method according to claim 1, characterized in that The amplitude of the first analog audio signal is a first amplitude, and decomposing the first analog audio signal into N second analog audio signals includes: Determining N second amplitudes based on the first amplitude and the number of high-frequency vibration units in the N areas, wherein the second amplitude is positively correlated with the number of high-frequency vibration units in the corresponding area; The first analog audio signal is decomposed into the N second analog audio signals based on the N second amplitudes.

7. An audio phase modulation device, characterized in that: Applied to an electronic device, the electronic device includes a digital speaker, the digital speaker includes N sound-emitting units, and the device includes: An acquisition module, configured to acquire a first analog audio signal; a decomposition module, configured to decompose the first analog audio signal into N second analog audio signals, wherein the superimposed amplitude of the N second analog audio signals is equal to the amplitude of the first analog audio signal; a phase modulation module, configured to control the N sound emitting units to respectively play the N second analog audio signals based on a target order, the N sound emitting units corresponding to the N second analog audio signals; The obtaining of the first analog audio signal includes: Reconstructing the digital signal input from the front end into an analog audio signal by the digital speaker using digital sound reconstruction technology to obtain the first analog audio signal; The digital speaker includes a plurality of high-frequency vibration units, each of which works independently; a division module, configured to divide all the high-frequency vibration units in the digital speaker into N areas, wherein the N areas correspond to the N sound-emitting units; The phase modulation module is specifically used for: Based on the target sequence, the high-frequency vibration units in the N areas are controlled in sequence to play the corresponding second analog audio signals.

8. The device according to claim 7, characterized in that The decomposition module is specifically used for: In a case where the first analog audio signal is a harmonic signal, decomposing the harmonic signal into N sub-harmonic signals to obtain the N second analog audio signals; Alternatively, when the first analog audio signal is a fundamental wave signal, the fundamental wave signal is decomposed into N sub-fundamental wave signals to obtain the N second analog audio signals.

9. The device according to claim 7, characterized in that The target sequence includes a sequential playback order of the N second analog audio signals, and the N playback start times corresponding to the N second analog audio signals are spaced apart by a first duration.

10. The device according to claim 7, characterized in that The decomposition module is specifically used for: The first analog audio signal is decomposed into N second analog audio signals with different amplitudes, wherein the amplitudes of the N second analog audio signals are in an increasing or decreasing relationship.

11. The device according to claim 7, characterized in that The decomposition module is specifically used for: When the number of high-frequency vibration units in the N areas is equal, the first analog audio signal is decomposed into N second analog audio signals with equal amplitudes.

12. The device according to claim 7, characterized in that The amplitude of the first analog audio signal is a first amplitude, and the decomposition module includes: a determining unit, configured to determine N second amplitudes based on the first amplitude and the number of high-frequency vibration units in the N areas, wherein the second amplitude is positively correlated with the number of high-frequency vibration units in the corresponding area; A decomposition unit is configured to decompose the first analog audio signal into the N second analog audio signals based on the N second amplitudes.

13. An electronic device, characterized in that: The electronic device includes a processor, a memory, and a program or instruction stored in the memory and executable on the processor. When the program or instruction is executed by the processor, the steps of the audio phasing method according to any one of claims 1 to 6 are implemented.

14. A readable storage medium, characterized in that The readable storage medium stores a program or instruction, and when the program or instruction is executed by a processor, the steps of the audio phase modulation method according to any one of claims 1 to 6 are implemented.

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