WO2024037183A1 - 音频输出方法、电子设备及计算机可读存储介质 - Google Patents
音频输出方法、电子设备及计算机可读存储介质 Download PDFInfo
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- WO2024037183A1 WO2024037183A1 PCT/CN2023/102020 CN2023102020W WO2024037183A1 WO 2024037183 A1 WO2024037183 A1 WO 2024037183A1 CN 2023102020 W CN2023102020 W CN 2023102020W WO 2024037183 A1 WO2024037183 A1 WO 2024037183A1
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- WIPO (PCT)
- Prior art keywords
- electronic device
- audio output
- piezoelectric sensor
- audio
- speaker
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- 238000000034 method Methods 0.000 title claims abstract description 41
- 238000003860 storage Methods 0.000 title claims description 15
- 230000005236 sound signal Effects 0.000 claims description 55
- 238000001914 filtration Methods 0.000 claims description 13
- 230000002708 enhancing effect Effects 0.000 claims description 11
- 238000004590 computer program Methods 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 30
- 239000000919 ceramic Substances 0.000 description 13
- 238000010586 diagram Methods 0.000 description 7
- 238000012545 processing Methods 0.000 description 7
- 238000004458 analytical method Methods 0.000 description 6
- 230000004044 response Effects 0.000 description 6
- 230000006870 function Effects 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 230000003321 amplification Effects 0.000 description 4
- 230000005684 electric field Effects 0.000 description 4
- 238000003199 nucleic acid amplification method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 230000001070 adhesive effect Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
Definitions
- the present application relates to the field of audio output technology, and in particular to an audio output method, electronic device and computer-readable storage medium.
- Embodiments of the present application provide an audio output method, electronic device, and computer-readable storage medium.
- the audio output method of the electronic device includes: when the electronic device is in the first audio output mode, driving the piezoelectric sensor to work and deform, so as to drive the display screen connected to the piezoelectric sensor to vibrate and produce sound. ; When the electronic device is in the second audio output mode, the piezoelectric sensor is driven to deform and the speaker is driven to compress the air in the front cavity, so that the deformation of the piezoelectric sensor and the push of the air in the front cavity are combined. The display screen is driven to vibrate and produce sound; the first audio output mode is different from the second audio output mode.
- the electronic device in the embodiment of the present application includes a housing, a display screen, a piezoelectric sensor and a speaker.
- the display screen is arranged on the housing.
- the piezoelectric sensor is connected to the display screen.
- the speaker is arranged in the casing, and the space in the casing that communicates with the display screen forms a front cavity of the speaker.
- the piezoelectric sensor When the electronic device is in the first audio output mode, the piezoelectric sensor deforms to drive the display screen to vibrate and make sound; when the electronic device is in the second audio output mode, the piezoelectric sensor The piezoelectric sensor deforms during operation and the speaker compresses the air in the front cavity, so that the deformation of the piezoelectric sensor and the push of the air in the front cavity jointly drive the display screen to vibrate and produce sound; the first audio The output mode is different from the second audio output mode.
- the computer-readable storage medium has a computer program stored thereon.
- the audio output method includes: when the electronic device is in the first audio output mode, driving the piezoelectric sensor to work and deform, so as to drive the display screen connected to the piezoelectric sensor to vibrate and produce sound; when the electronic device In the second audio output mode, the piezoelectric sensor is driven to deform and the speaker is compressed to compress the air in the front cavity. air, so that the deformation of the piezoelectric sensor and the push of the air in the front cavity jointly drive the display screen to vibrate and produce sound; the first audio output mode is different from the second audio output mode.
- the audio output method, electronic device and storage medium of the embodiment of the present application can drive the piezoelectric sensor and the speaker to work together in the second audio output mode, so that the deformation of the piezoelectric sensor and the push of the air in the front cavity jointly drive the display
- the screen vibrates to produce sound; among them, the piezoelectric sensor deforms and drives the display screen to vibrate, which can ensure the sound effect of audio in the mid-to-high frequency range, while the speaker compresses the air in the front cavity and promotes the vibration of the display screen to ensure the sound effect of audio in the mid-to-low frequency range. It can ensure the audio output effect of electronic devices in the full frequency domain and improve the user's listening experience.
- Figure 1 is a schematic flow chart of an audio output method in some embodiments of the present application.
- Figure 2 is a schematic structural diagram of an electronic device according to certain embodiments of the present application.
- Figure 3 is an exploded schematic diagram of a partial structure of an electronic device according to certain embodiments of the present application.
- Figure 4 is a schematic cross-sectional view along line IV-IV in the electronic device shown in Figure 2;
- Figure 5 is a schematic flow chart of an audio output method in some embodiments of the present application.
- Figure 6 is a schematic diagram of the principle of determining the audio output mode in the audio output method of some embodiments of the present application.
- Figure 7 is a schematic flow chart of an audio output method in some embodiments of the present application.
- Figure 8 is a schematic flow chart of an audio output method in some embodiments of the present application.
- Figure 9 is a partial structural diagram of an electronic device according to certain embodiments of the present application.
- Figure 10 is a schematic flow chart of an audio output method in some embodiments of the present application.
- Figure 11 is a frequency response analysis diagram of piezoelectric sensors and speakers in electronic equipment according to certain embodiments of the present application.
- Figure 12 is a schematic diagram of the connection state between a computer-readable storage medium and a processor in some embodiments of the present application.
- first and second are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, it is limited to “first” and “second”
- the features of may include one or more of the stated features, explicitly or implicitly.
- “plurality” means two or more, unless otherwise explicitly and specifically limited.
- the audio output effect of the electronic device can be improved by adding a speaker.
- the speaker's high-frequency performance is poor, making it impossible for the speaker to take into account the audio output effect in the full frequency range.
- the improvement of the sound effect of electronic devices is limited and cannot meet the needs of users.
- the present application provides an audio output method, an electronic device 100 (shown in FIG. 2 ), and a computer-readable storage medium 200 (shown in FIG. 12 ).
- Audio output methods include:
- the piezoelectric sensor 30 is driven to deform and the speaker 40 is driven to compress the air in the front chamber 1071, so that the piezoelectric sensor 30 is deformed and the air in the front chamber 1071 is pushed. Together, they drive the display screen 107 to vibrate and make sounds.
- the electronic device 100 may be a mobile phone, a tablet computer, a laptop, a personal computer, a wearable device, a car, a drone, a robot, or other device with an audio output function.
- wearable devices include smart bracelets, smart watches, smart glasses, etc.
- the electronic device 100 in the embodiment of the present application is explained by taking a mobile phone as an example. It should be noted that the specific form of the electronic device 100 is not limited to a mobile phone.
- the first audio output mode is different from the second audio output mode.
- the first audio output mode may be a handset mode, such as answering a phone call.
- the piezoelectric sensor 30 works to generate deformation to drive the display. Screen 107 vibrates and makes sound.
- the second audio output mode may be an external playback mode, such as watching a video.
- the piezoelectric sensor 30 and the speaker 40 work together to drive the display screen 107 to vibrate and produce sound.
- the electronic device 100 of the present application sets different audio output modes to make the audio output control of the electronic device 100 more intelligent and reduce the power consumption of the electronic device 100 .
- the piezoelectric sensor 30 works and the speaker 40 does not work. Among them, the piezoelectric sensor 30 works to produce deformation. Since the piezoelectric sensor 30 is connected to the display screen 107, when the piezoelectric sensor 30 deforms, the display screen 107 vibrates driven by the piezoelectric sensor 30, thus speak out. That is, the electronic device 100 can use the deformation of the piezoelectric sensor 30 to cause the display screen 107 to serve as a sound-emitting device of the electronic device 100 for emitting sound. When the electronic device 100 is in the second audio output mode, both the piezoelectric sensor 30 and the speaker 40 work.
- the piezoelectric sensor 30 deforms and drives the display screen 107 to vibrate.
- the speaker 40 compresses the air in the front cavity 1071, so that the air can push the display screen 107 to vibrate.
- the display screen 107 is vibrated twice and produces sound. That is, when the electronic device 100 is in the second audio output mode, the piezoelectric sensor 30 and the speaker 40 together drive the display screen 107 to vibrate, so that the display screen 107 makes a sound.
- the audio output method and electronic device 100 can drive the piezoelectric sensor 30 and the speaker 40 to work together in the second audio output mode, so that the deformation of the piezoelectric sensor 30 and the push of the air in the front cavity 1071 are coordinated.
- the display screen 107 is driven to vibrate and produce sound; among them, the piezoelectric sensor 30 deforms and drives the display screen 107 to vibrate, which can ensure the sound effect of audio in the medium and high frequency range, while the speaker 40 compresses the air in the front cavity 1071 and pushes the display screen 107 to vibrate, which can ensure the medium and low frequency. This ensures the audio output effect of the electronic device 100 in the full frequency domain and improves the user's listening experience.
- the electronic device 100 includes a housing 10 , a display screen 107 , a piezoelectric sensor 30 and a speaker 40 .
- the display screen 107 is provided on the housing 10 to display information such as images, text, etc.
- the piezoelectric sensor 30 is connected to the display screen 107 .
- the speaker 40 is disposed in the housing 10 , and the space in the housing 10 that communicates with the display screen 107 forms the front cavity 1071 of the speaker 40 .
- the piezoelectric sensor 30 works and deforms to drive the display screen 107 to vibrate and make sound; when the electronic device 100 is in the second audio output mode, the piezoelectric sensor 30 works and deforms.
- the speaker 40 compresses the air in the front cavity 1071, so that the deformation of the piezoelectric sensor 30 and the push of the air in the front cavity 1071 jointly drive the display screen 107 to vibrate and produce sound.
- the first audio output mode is different from the second audio output mode.
- the piezoelectric sensor 30 is disposed inside the housing 10 and connected to the display screen 107 .
- the piezoelectric sensor 30 can be connected to the display screen 107 through an adhesive such as double-sided tape.
- the housing 10 is a closed housing 10 , that is, the housing 10 can provide protection for functional devices such as the piezoelectric sensor 30 and the speaker 40 installed inside the housing 10 , where the piezoelectric sensor 30
- the speaker 40 can also be fixed to the casing 10 through fasteners or clamping.
- the piezoelectric sensor 30 When the piezoelectric sensor 30 is fixed on the housing 10, the piezoelectric sensor 30 deforms and vibrates, and the vibration can be transmitted to the display screen 107 through the housing 10, and can also drive the display screen 107 to emit sound.
- the display screen 107 may include a liquid crystal display screen 107 (Liquid Crystal Display, LCD), an organic light emitting diode display screen 107 (Organic Light Emitting Diode, OLED) and other different types of display screens 107, which are not limited here.
- the display screen 107 can also use a flexible screen, so that when the piezoelectric sensor 30 or the speaker 40 is working, the display screen 107 can be driven to vibrate and produce sound.
- the piezoelectric sensor 30 can be made of one piezoelectric ceramic, multiple piezoelectric ceramics, multiple piezoelectric ceramic particles, etc., which are not limited here.
- Piezoelectric ceramics have an inverse piezoelectric effect, that is, when the piezoelectric sensor 30 is placed in an electric field, the piezoelectric ceramics in the piezoelectric sensor 30 can deform under the action of the electric field, and the direction of the deformation changes following the direction of the electric field. The deformation of piezoelectric ceramics can cause a potential difference in the piezoelectric ceramics and form an electric current, thereby converting mechanical energy into electrical energy.
- the potential difference generated on the piezoelectric ceramics and the direction of the current formed correspond to the deformation direction of the piezoelectric ceramics. It can be understood that when the piezoelectric ceramic vibrates under the action of external force, an alternating electric field can be formed in the piezoelectric ceramic, thereby generating an alternating current signal. Furthermore, when an alternating current signal is generated in the piezoelectric ceramics, the frequency of the alternating current signal is the same as the vibration frequency of the piezoelectric ceramics.
- the piezoelectric sensor 30 when the electronic device 100 is in the first audio output mode, the piezoelectric sensor 30 is driven to work, that is, the piezoelectric sensor 30 deforms, thereby driving the display connected to the piezoelectric sensor 30 Screen 107 vibrates sound, so that the piezoelectric sensor 30 is used as a speaker 40 for outputting audio, thereby enhancing the audio output effect of the electronic device 100 .
- the piezoelectric sensor 30 is disposed inside the housing 10 and is connected to the display screen 107 to drive the display screen 107 to vibrate and produce sound, thereby avoiding opening a sound hole in the housing 10 of the electronic device 100 and ensuring the sealing of the housing 10 .
- the speaker 40 may be an electromagnetic electroacoustic converter, that is, the speaker 40 also includes a diaphragm (not shown).
- a magnetic field is generated inside the speaker 40 to drive the vibration.
- the membrane vibrates and compresses the surrounding air, and the compressed air pushes the display screen 107 to vibrate and produce sound.
- the speaker 40 is disposed inside the housing 10 , and the space connected between the display screen 107 and the housing 10 forms the front cavity 1071 of the speaker 40 , when the electronic device 100 is in the second audio output mode.
- the speaker 40 works to compress the air in the front cavity 1071, and the air in the front cavity 1071 pushes the display screen 107 to vibrate and produce sound.
- the piezoelectric sensor 30 works and deforms to drive the display screen 107 Vibration and sound generation, that is, the electronic device 100 cooperates with the piezoelectric sensor 30 and the speaker 40 to jointly drive the display screen 107 to vibrate and sound, thereby improving the audio output effect of the electronic device 100 .
- the electronic device 100 outputs sound by transmitting it to the display screen 107 of the electronic device 100 through the deformation of the piezoelectric sensor 30 , and then driving the display screen 107 to vibrate and produce sound; or through the deformation of the piezoelectric sensor 30 and the speaker. 40 compresses the air in the front chamber 1071, and then jointly drives the display screen 107 to vibrate and produce sound. Therefore, there is no need to provide a sound hole on the electronic device 100 to ensure the sealing of the housing 10 and enhance the waterproof effect of the electronic device 100.
- the piezoelectric sensor 30 and the speaker 40 are spaced apart, that is, the piezoelectric sensor 30 and the speaker 40 are disposed in different positions relative to the display screen 107 in the housing 10 , for example, the piezoelectric sensor 30 is disposed At one end of the display screen 107, the speaker 40 can be disposed at the other end opposite to the display screen 107. Furthermore, when the electronic device 100 is in the second audio output mode, the piezoelectric sensor 30 drives one end of the display screen 107 to vibrate, and at the same time The speaker 40 can drive the opposite end of the display screen 107 to vibrate, thereby jointly driving different parts of the display screen 107 to vibrate and produce sound.
- the one hand can create a three-dimensional effect of the audio output of the electronic device 100 and increase the loudness of the sound produced by the electronic device 100.
- it can avoid the problem of sound field difference caused by the asynchronous vibration of the two ends of the display screen 107, which in turn leads to the reduction of the sound effect of the electronic device 100, and improves the user experience.
- the piezoelectric sensor 30 and the speaker 40 can respectively cause the display screen 107 to emit better audio in different frequency domains.
- the piezoelectric sensor 30 can cause the display screen 107 to emit better audio in the mid-to-high frequency domain.
- the speaker 40 can cause the display screen 107 to emit sound in the mid- to low-frequency domain with good effects, thereby ensuring the audio output effect of the electronic device 100 in the full frequency domain and improving the user's listening experience.
- the piezoelectric sensor 30 is disposed inside the housing 10 and is connected to the display screen 107 to drive the display screen 107 to vibrate and produce sound; the speaker 40 is disposed inside the housing 10 , and the speaker 40 works to compress the front cavity 1071 the air inside, The display screen 107 is driven to vibrate and produce sound. Therefore, there is no need to open a sound hole on the surface of the housing 10 of the electronic device 100, thereby ensuring the sealing performance of the housing 10.
- the audio output method may also include:
- the electronic device 100 further includes a processor 20 disposed in the housing 10 .
- the processor 20 is used to obtain the audio data to be output; obtain the application program corresponding to the audio data to be output in the electronic device 100; and determine the audio output mode of the electronic device 100 according to the application program and the preset mode database, wherein, in the preset mode database A default application program and a default audio output mode corresponding to the default application program are stored.
- the processor 20 obtains the audio data to be output, and determines its corresponding application program based on the audio data to be output, and the processor 20 can determine the corresponding application program according to the preset program and the preset mode database.
- the mapping relationship between the preset application program and the preset audio output mode determines the audio output mode of the electronic device 100 .
- known applications hereinafter referred to as preset applications
- audio output modes corresponding to the preset applications are pre-stored in the preset mode database.
- preset applications known applications
- the audio output obtained under the different applications is mode as the default audio output mode.
- Multiple sets of preset applications and preset audio output modes are organized and recorded to form a preset mode database.
- the preset audio output mode corresponding to the application can be determined, and the preset audio output mode is the electronic device. 100 actual audio output modes.
- the preset mode database may be pre-stored in the memory and may be read by the processor 20 .
- the processor 20 By setting the preset mode database, after the processor 20 determines the application program corresponding to the audio data to be output in the electronic device 100, it can directly communicate with the preset application program and the preset audio output mode in the preset mode database according to the application program.
- the comparison and analysis further determines the audio output mode of the electronic device 100, so that the processor 20 can adjust the audio output mode of the electronic device 100 more efficiently.
- the following describes the audio output method of the embodiment of the present application in conjunction with specific application scenarios.
- the processor 20 can obtain the audio data of the music to be played, and determine that the corresponding program of the audio data in the electronic device 100 should be a music player, or other programs that can play music, the processor 20 analyzes the music player and the default application program in the default mode database to obtain the corresponding audio output mode as the second audio output mode (external playback mode), then the driver The piezoelectric sensor 30 and the speaker 40 work together to drive the display screen 107 to vibrate and produce sound.
- the processor 20 when the user uses the electronic device 100 to answer a call, the processor 20 obtains the played language. and determines that the application program corresponding to the audio data in the electronic device 100 is to answer the phone, or other program that can answer the phone, the processor 20 analyzes according to the preset application program in the database of answering the phone and the preset mode , to obtain the corresponding audio output mode as the first audio output mode (earpiece mode), then drive the piezoelectric sensor 30 to work to drive the display screen 107 to vibrate and make sounds.
- the audio output method also includes:
- the electronic device 100 further includes a processor 20 disposed in the housing 10 .
- the processor 20 is used to determine the audio output mode of the electronic device 100 according to user input.
- the audio output method applied to the electronic device 100 according to the embodiment of the present application will be described below with reference to specific application scenarios.
- a selection interface for the current audio output mode of the electronic device 100 can appear on the display screen 107 , and the user can determine the audio output mode of the electronic device 100 according to specific needs, for example , the user selects the current audio output mode as the second audio output mode (external amplification mode, such as speaker mode), that is, the piezoelectric sensor 30 and the speaker 40 are driven to work together to drive the display screen 107 to vibrate and produce sound, so as to realize the call.
- the second audio output mode external amplification mode, such as speaker mode
- driving the piezoelectric sensor 30 to work deformation includes:
- the electronic device 100 further includes a processor 20 and a first amplifier 50 .
- the processor 20 is used to parse the audio data to be output to obtain audio signals.
- the first amplifier 50 is electrically connected between the processor 20 and the piezoelectric sensor 30 and is used to enhance the audio signal and drive the piezoelectric sensor 30 to work.
- the processor 20 can also perform decoding and other processing on the acquired audio data to be output to obtain the corresponding audio signal, and The audio signal is transmitted to the first amplifier 50 .
- the processor 20 in the electronic device 100 can process the music data to be played, thereby obtaining the audio signal of the music to be played, and transmit the audio signal to the first amplifier 50; for another example,
- the processor 20 processes the voice data of the call partner received by the electronic device 100 to obtain the audio signal of the voice data, and transmits the audio signal to the first amplifier 50 .
- the first amplifier 50 is electrically connected to the piezoelectric sensor 30 .
- the processor 20 transmits the audio signal obtained after analyzing the audio data to be output to the first amplifier 50.
- the first amplifier 50 can amplify the power of the audio signal and transmit the amplified audio signal to the piezoelectric sensor 30 to drive The piezoelectric sensor 30 deforms, causing the display screen 107 to vibrate and make sounds.
- the first amplifier 50 may be any audio power amplifier such as Class A, Class B, Class AB, Class D, Class K audio power amplifier, Smart PA (Power Amplifier, Power Amplifier), etc. , no limit here system.
- the electronic device 100 further includes a second amplifier 60.
- the processor 20 is also used to filter the audio signal using a filtering algorithm; the first amplifier 50 is also used to enhance the filtered audio.
- the piezoelectric sensor 30 is driven to work to drive the display screen 107 to vibrate; the second amplifier 60 is electrically connected between the processor 20 and the speaker 40 to enhance the unfiltered audio signal and drive the speaker 40 to compress the front cavity. 1071 of air to drive the display screen 107 to vibrate.
- the processor 20 can parse the audio data to be output to obtain the corresponding audio signal, and use a filtering algorithm to perform processing on the audio signal. filter processing, and transmit the filtered audio signal to the first amplifier 50, and transmit the unfiltered audio signal to the second amplifier 60, to respectively amplify the power of the filtered audio signal and the power of the unfiltered audio signal, Among them, the first amplifier 50 transmits the amplified audio signal to the piezoelectric sensor 30 to cause the piezoelectric sensor 30 to work and deform. The second amplifier 60 transmits the amplified audio signal to the speaker 40 to drive the speaker 40 to compress it. The air in the front cavity 1071 then jointly drives the display screen 107 to vibrate and produce sound.
- the processor 20 is also provided with a filter.
- the electronic device 100 filters the audio signal input to the piezoelectric sensor 30 through the filtering algorithm in the processor 20 to remove low-frequency signals in the audio signal.
- the piezoelectric sensor 30 can drive the display screen 107 to vibrate and emit sound. It has a better mid-to-high frequency sound range and improves the audio output effect of the electronic device 100. On the other hand, it can also avoid the problem of excessive power consumption of the electronic device 100 due to the high impedance of the piezoelectric sensor 30 at low frequencies.
- the processor 20 uses a filtering algorithm instead of additional hardware filtering devices, which can simplify the structure and save costs.
- the unfiltered audio signal is transmitted to the second amplifier 60, and the power is amplified by the second amplifier 60 and then transmitted to the speaker 40, thereby driving the speaker 40 to compress the air in the front cavity 1071, Then, the display screen 107 is pushed to vibrate and make sounds. Since the housing 10 of the electronic device 100 is a sealed housing 10, and the space in the housing 10 that communicates with the display screen 107 forms the front cavity 1071 of the speaker 40, the cutoff frequency (Fh) of the speaker 40 is low. Therefore, Speaker 40 The low-frequency effect of driving the display screen 107 to vibrate and produce sound is better.
- the piezoelectric sensor 30 When the electronic device 100 is in the second audio output mode, the piezoelectric sensor 30 is driven to deform and drive the display screen 107 to vibrate and produce sound to provide better audio in the mid-to-high frequency range, and the speaker 40 is driven to compress the air in the front cavity 1071 and The display screen 107 is pushed to vibrate and produce sound to provide better mid- and low-frequency audio, thereby ensuring the audio output effect of the electronic device 100 in the full frequency domain and improving the user's listening experience.
- the filtering algorithm in the processor 20 can also perform filtering processing on the audio signal transmitted to the second amplifier 60 , that is, remove or attenuate the mid- and high-frequency signals in the audio signal, and retain the low-frequency signals in the audio signal.
- the low-frequency signal is input to the second amplifier 60 for power amplification processing, and the amplified low-frequency signal drives the speaker 40 to compress the air in the front cavity 1071 so that the display screen 107 vibrates and sounds, thereby preventing the speaker 40 from outputting medium and high frequencies.
- the problem of signal distortion occurs and the audio output effect of the electronic device 100 is improved.
- Figure 11 is a frequency response analysis diagram of the piezoelectric sensor 30 and the speaker 40 in the electronic device 100.
- L1 is the frequency response analysis curve of the piezoelectric sensor 30 and the speaker 40 working together to make the display screen 107 sound
- L2 is the piezoelectric sensor 30.
- the frequency response analysis curve of the display screen 107 making sounds when the speaker 40 is working is used.
- L3 is the frequency response analysis curve of the speaker 40 making the display screen 107 sound when the speaker 40 is working.
- the full-band sound frequency range that the human ear can distinguish is approximately: 200Hz ⁇ 20000Hz.
- the mid-low frequency domain may be 200 Hz to 2500 Hz
- the range of the mid-to-high frequency domain may be 2000 Hz ⁇ 20000 Hz.
- the frequency domain range in different electronic devices 100 will be different.
- the range of the mid-low frequency domain may be 200 Hz to 3000 Hz.
- the range of medium and high frequency domain can be 2000Hz ⁇ 20000Hz.
- the working voltage of the first amplifier 50 can be set to be larger.
- the operating voltage of the first amplifier 50 may be set to 10V (volts).
- the operating voltage of the second amplifier 60 can be set smaller.
- the operating voltage of the second amplifier 60 may be set to 4.8V. That is, the operating voltage of the first amplifier 50 may be greater than the operating voltage of the second amplifier 60 .
- the second amplifier 60 can also be any audio power amplifier such as Class A, Class B, Class AB, Class D, Class K audio power amplifier, smart power amplifier, etc., which is not limited here.
- the first amplifier 50 and the second amplifier 60 may be intelligent power amplifiers to control the piezoelectric sensor 30 and the speaker 40 .
- Speaker 40 is protected.
- the second amplifier 60 can detect the impedance and temperature coefficient of the speaker 40 in real time, so that the operating voltage of the second amplifier 60 can be adjusted in real time to maintain the operating voltage of the second amplifier 60 within a safe voltage range.
- the first amplifier 50 and the second amplifier 60 are electrically connected to the processor 20 through a serial bus (I2C). connected, so that the processor 20 can select to transmit the audio signal to the first amplifier 50 and/or the second amplifier 60, so that the first amplifier 50 and the second amplifier 60 drive the piezoelectric sensor 30 and the speaker 40 to work respectively.
- the processor 20 and the first amplifier 50 and the second amplifier 60 are connected through a serial bus, thereby simplifying the circuit PCB wiring, reducing production costs, and improving the reliability of the circuit system.
- the housing 10 may include a front housing 101, a rear housing 103, and a middle frame 105 located between the front housing 101 and the rear housing 103, and the front housing 101, the rear housing 105 103 and the middle frame 105 located between the front case 101 and the rear case 103 are sealedly connected to ensure the sealing of the case 10 and improve the waterproofness of the case 10 .
- the display screen 107 is installed on the front shell 101 and is spaced apart from the middle frame 105 .
- the speaker 40 is installed on the middle frame 105 and is spaced apart from the display screen 107 .
- the front cavity 1071 is formed by the connecting area between the display screen 107 and the speaker 40 in the housing 10 . form.
- the middle frame 105 may be a plate-like, sheet-like, or other shaped structure.
- the middle frame 105 is used to provide support for electronic devices or functional components in the electronic device 100 so as to connect the electronic devices 100 to the electronic device 100 .
- the devices and functional components are installed together.
- the middle frame 105 is provided with through holes, grooves, protrusions and other structures to facilitate the installation of electronic devices or functional devices in the electronic device 100 .
- the middle frame 105 is provided with a through hole, and the piezoelectric sensor 30 passes through the through hole to connect to the display screen 107 .
- the speaker 40 is installed on the middle frame 105 and is spaced apart from the display screen 107 .
- the material of the middle frame 105 may be metal, plastic, etc., which is not limited here.
- the space in the housing 10 connected to the display screen 107 forms the front cavity 1071 of the speaker 40 , that is, the spaces formed between the display screen 107 and the front case 101 , the rear case 103 and the middle frame 105 are all
- the front cavity 1071 of the speaker 40 further increases the volume of the front cavity 1071 of the speaker 40 so that the speaker 40 can compress the air in the front cavity 1071 and thereby promote the display screen 107 to vibrate and produce sound, thereby ensuring better performance without filtering. Audio in the middle and low frequency range, and there is no need to open a sound hole in the housing 10 to ensure the sealing property of the housing 10.
- the electronic device 100 further includes a first circuit board 70 and a second circuit board 80 .
- the first circuit board 70 is electrically connected to the piezoelectric sensor 30 .
- the second circuit board 80 is electrically connected to the speaker 40 .
- both the first circuit board 70 and the second circuit board 80 are located between the middle frame 105 and the rear case 103 .
- the first circuit board 70 and the second circuit board 80 may be disposed on the middle frame 105 for fixation.
- the processor 20 is installed on the first circuit board 70 or the second circuit board 80 to determine the audio output mode of the electronic device 100 and control the piezoelectric sensor 30 to work or the piezoelectric sensor 30 and the speaker 40 to work together to drive the display screen 107 to vibrate. speak out.
- the first circuit board 70 or the second circuit board 80 can also be electrically connected to the display screen 107 to control the display screen 107 through the processor 20 on the first circuit board 70 or the second circuit board 80 control the display.
- there is one circuit board in the electronic device 100 that is, one circuit board is electrically connected to the piezoelectric sensor 30 and the speaker 40 at the same time, and the processor 20 is installed on the circuit board to determine the function of the electronic device 100 .
- the audio output mode controls the piezoelectric sensor 30 to work or the piezoelectric sensor 30 and the speaker 40 to work together to drive the display screen 107 to vibrate and produce sound.
- the electronic device 100 may further include a battery 90 for powering the first circuit board 70, the second circuit board 70, and the second circuit board 70. Power supply for circuit board 80 and other electronic devices.
- the battery 90 is disposed inside the casing 10 .
- the battery 90 can be fixedly installed on the middle frame 105 of the casing 10 , or the battery 90 can also be fixedly installed on the rear case 103 .
- an embodiment of the present application also provides a computer-readable storage medium 200 with a computer program 202 stored thereon.
- the program is executed by the processor 20, the audio output method of any of the above embodiments is implemented.
- the piezoelectric sensor 30 is driven to deform and the speaker 40 is driven to compress the air in the front chamber 1071, so that the deformation of the piezoelectric sensor 30 and the air in the front chamber 1071 are
- the push together drives the display screen 107 to vibrate and make sound; the first audio output mode is different from the second audio output mode.
- the piezoelectric sensor and the speaker in the second audio output mode, can be driven to work together, so that the deformation of the piezoelectric sensor and the push of the air in the front cavity are jointly driven
- the display screen vibrates and makes sound; among them, the piezoelectric sensor deforms and drives the display screen to vibrate to ensure the sound effect of audio in the mid-to-high frequency range, while the speaker compresses the air in the front cavity and promotes the vibration of the display screen to ensure the sound effect of audio in the mid-to-low frequency range. This can ensure the audio output effect of the electronic device in the full frequency domain and improve the user's listening experience.
- Computer program 202 includes computer program code.
- Computer program code can be in the form of source code, object code, executable file or some intermediate form, etc.
- Computer-readable storage media can include: any entity or device that can carry computer program code, recording media, USB flash drives, mobile hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM, Read-Only Memory), random access memory Access memory (RAM, Random Access Memory), and software distribution media, etc.
- the processor can be a central processing unit, or other general-purpose processor, digital signal processor (Digital Signal Processor, DSP), application specific integrated circuit (Application Specific Integrated Circuit, ASIC), field programmable gate array (Field-Programmable Gate) Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
- DSP Digital Signal Processor
- ASIC Application Specific Integrated Circuit
- FPGA field programmable gate array
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- Otolaryngology (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
Abstract
一种音频输出方法包括：在电子设备(100)处于第一音频输出模式时，驱动压电传感器(30)工作形变，以带动与压电传感器(30)连接的显示屏(107)振动而发声；在电子设备(100)处于第二音频输出模式时，驱动压电传感器(30)工作形变及驱动扬声器(40)压缩前腔的空气，以使压电传感器(30)的形变和前腔(1071)内空气的推动共同带动显示屏(107)振动而发声。
Description
优先权信息
本申请请求2022年08月16日向中国国家知识产权局提交的、专利申请号为2022109812216的专利申请的优先权和权益，并且通过参照将其全文并入此处。
本申请涉及音频输出技术领域，特别涉及一种音频输出方法、电子设备及计算机可读存储介质。
随着电子通信技术的发展，诸如智能手机等电子设备在用户的日常生活中使用地越来越频繁，用户对电子设备的视听体验要求也越来越高，要求实现音频具有较佳的输出音效。目前电子设备中可通过增设一个扬声器来提升电子设备的音频输出效果。
发明内容
本申请的实施方式提供了一种音频输出方法、电子设备及计算机可读存储介质。
本申请实施方式的电子设备的音频输出方法包括：在所述电子设备处于第一音频输出模式的情况下，驱动压电传感器工作形变，以带动与所述压电传感器连接的显示屏振动而发声；在所述电子设备处于第二音频输出模式的情况下，驱动压电传感器工作形变及驱动扬声器压缩前腔的空气，以使所述压电传感器的形变和所述前腔内空气的推动共同带动所述显示屏振动而发声；所述第一音频输出模式与所述第二音频输出模式不同。
本申请实施方式的电子设备包括壳体、显示屏、压电传感器及扬声器。所述显示屏设置于所述壳体上。所述压电传感器与所述显示屏连接。所述扬声器设置于所述壳体内，所述壳体内与所述显示屏连通的空间形成所述扬声器的前腔。在所述电子设备处于第一音频输出模式的情况下，所述压电传感器工作形变，以带动所述显示屏振动而发声；在所述电子设备处于第二音频输出模式的情况下，所述压电传感器工作形变及所述扬声器压缩所述前腔的空气，以使所述压电传感器的形变和所述前腔内空气的推动共同带动所述显示屏振动而发声；所述第一音频输出模式与所述第二音频输出模式不同。
本申请实施方式的计算机可读存储介质，其上存储有计算机程序，所述程序被处理器执行的情况下，实现音频输出方法。所述音频输出方法包括：在所述电子设备处于第一音频输出模式的情况下，驱动压电传感器工作形变，以带动与所述压电传感器连接的显示屏振动而发声；在所述电子设备处于第二音频输出模式的情况下，驱动压电传感器工作形变及驱动扬声器压缩前腔的空
气，以使所述压电传感器的形变和所述前腔内空气的推动共同带动所述显示屏振动而发声；所述第一音频输出模式与所述第二音频输出模式不同。
本申请实施方式的音频输出方法、电子设备及存储介质，在第二音频输出模式下，可驱动压电传感器与扬声器共同工作，以使压电传感器的形变和前腔内空气的推动共同带动显示屏振动而发声；其中，压电传感器形变而带动显示屏振动可保证中高频域的音频的音效，而扬声器压缩前腔内空气并推动显示屏振动可保证中低频域的音频的音效，由此可保证电子设备在全频域的音频的输出效果，提升用户的听觉体验。
本申请的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本申请的实践了解到。
本申请的上述和/或附加的方面和优点从结合下面附图对实施方式的描述中将变得明显和容易理解，其中：
图1是本申请某些实施方式的音频输出方法的流程示意图；
图2是本申请某些实施方式的电子设备的结构示意图；
图3是本申请某些实施方式的电子设备的部分结构的分解示意图；
图4是图2所示的电子设备中沿线IV-IV的截面示意图；
图5是本申请某些实施方式的音频输出方法的流程示意图；
图6是本申请某些实施方式的音频输出方法中确定音频输出模式的原理示意图；
图7是本申请某些实施方式的音频输出方法的流程示意图；
图8是本申请某些实施方式的音频输出方法的流程示意图；
图9是本申请某些实施方式的电子设备的部分结构示意图；
图10是本申请某些实施方式的音频输出方法的流程示意图；
图11是本申请某些实施方式的电子设备中压电传感器和扬声器的频响分析图；
图12是本申请某些实施方式的计算机可读存储介质与处理器的连接状态示意图。
下面详细描述本申请的实施方式，所述实施方式的实施方式在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施方式是示例性的，仅用于解释本申请，而不能理解为对本申请的限制。
在本申请的实施方式的描述中，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”
的特征可以明示或者隐含地包括一个或者更多个所述特征。在本申请的实施方式的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
随着电子通信技术的发展，诸如智能手机等电子设备在用户的日常生活中使用地越来越频繁，用户对电子设备的视听体验要求也越来越高，要求实现音频具有较佳的输出音效。目前电子设备中可通过增设一个扬声器来提升电子设备的音频输出效果。然而，由于扬声器在高频时的阻抗较高，导致扬声器的高频性能较差，使得扬声器无法兼顾全频域的音频输出效果，对电子设备的音效提升有限，无法满足用户的需求。为解决此问题，本申请提供一种音频输出方法、电子设备100(图2所示)及计算机可读存储介质200(图12所示)。
请参阅图1至图4，本申请实施方式提供一种应用于电子设备100的音频输出方法。音频输出方法包括：
01：在电子设备100处于第一音频输出模式的情况下，驱动压电传感器30工作形变，以带动与压电传感器30连接的显示屏107振动而发声；
02：在电子设备100处于第二音频输出模式的情况下，驱动压电传感器30工作形变及驱动扬声器40压缩前腔1071的空气，以使压电传感器30的形变和前腔1071内空气的推动共同带动显示屏107振动而发声。
在某些实施方式中，电子设备100可以是手机、平板电脑、笔记本电脑、个人计算机、穿戴式设备、汽车、无人机、机器人等具有音频输出功能的设备。其中，穿戴式设备包括智能手环、智能手表、智能眼镜等。本申请实施方式电子设备100是以手机为例进行说明，需要说明的是，电子设备100的具体形式并不限于手机。
在某些实施方式中，第一音频输出模式与第二音频输出模式不同，例如，第一音频输出模式可以是听筒模式，例如接听电话，此时，压电传感器30工作产生形变，以带动显示屏107振动发声。第二音频输出模式可以是外放模式，例如观看视频，此时，压电传感器30与扬声器40共同工作，以带动显示屏107振动发声。本申请的电子设备而100通过设置不同的音频输出模式，以使电子设备100的音频输出控制更加智能，减少电子设备100的功耗。
具体地，请参阅图4，在某些实施方式中，在电子设备100处于第一音频输出模式的情况下，压电传感器30工作，扬声器40不工作。其中，压电传感器30工作以产生形变，由于压电传感器30与显示屏107连接，因此，在压电传感器30产生形变的情况下，显示屏107在压电传感器30的带动下产生振动，从而发声。即，电子设备100可以通过压电传感器30的形变，使得显示屏107作为电子设备100的发声器件，用于发声。在电子设备100处于第二音频输出模式的情况下，压电传感器30与扬声器40均工作。其中，压电传感器30产生形变进而带动显示屏107振动，同时，扬声器40压缩前腔1071内的空气，进而使得空气能够推动显示屏107进行振动，显示屏107被双重振动后发声。即，在电子设备100处于第二音频输出模式的情况下，压电传感器30与扬声器
40共同带动显示屏107振动，以使显示屏107发声。
本申请实施方式的音频输出方法及电子设备100，在第二音频输出模式下，可驱动压电传感器30与扬声器40共同工作，以使压电传感器30的形变和前腔1071内空气的推动共同带动显示屏107振动而发声；其中，压电传感器30形变而带动显示屏107振动可保证中高频域的音频的音效，而扬声器40压缩前腔1071内空气并推动显示屏107振动可保证中低频域的音频的音效，由此可保证电子设备100在全频域的音频的输出效果，提升用户的听觉体验。
请参阅图4，在某些实施方式中，电子设备100包括壳体10、显示屏107、压电传感器30及扬声器40。显示屏107设置于壳体10上，以显示图像、文本等信息。压电传感器30与显示屏107连接。扬声器40设置于壳体10内，壳体10内与显示屏107连通的空间形成扬声器40的前腔1071。在电子设备100处于第一音频输出模式的情况下，压电传感器30工作形变，以带动显示屏107振动而发声；在电子设备100处于第二音频输出模式的情况下，压电传感器30工作形变及扬声器40压缩前腔1071的空气，以使压电传感器30的形变和前腔1071内空气的推动共同带动显示屏107振动发声。第一音频输出模式与第二音频输出模式不同。
在某些实施方式中，压电传感器30设置于壳体10的内部，并与显示屏107连接，例如，压电传感器30可以通过双面胶等粘接剂与显示屏107进行连接。
在某些实施方式中，壳体10为封闭的壳体10，即，壳体10能够为安装于壳体10内部的压电传感器30、扬声器40等功能器件提供保护，其中，压电传感器30、扬声器40还可以通过紧固件、卡接的方式固定于壳体10。当压电传感器30固定于壳体10上时，压电传感器30形变振动，该振动可通过壳体10传递给显示屏107，同样也可以带动显示屏107发声。
在某些实施方式中，显示屏107可以包括液晶显示屏107(Liquid Crystal Display，LCD)、有机发光二极管显示屏107(Organic Light Emitting Diode，OLED)等不同类型的显示屏107，在此不作限制。在某些实施方式中，显示屏107还可以采用柔性屏幕，以便于压电传感器30或扬声器40工作时，带动显示屏107振动发声。
在某些实施方式中，压电传感器30可以通过一个压电陶瓷、多个压电陶瓷、多个压电陶瓷颗粒等不同方式制成，在此不作限制。压电陶瓷具有逆压电效应，即，当压电传感器30设置于电场中时，压电传感器30中的压电陶瓷能够在电场的作用下产生形变，形变的方向跟随电场的方向进行变化，压电陶瓷产生形变可以使得压电陶瓷产生电势差，并形成电流，从而将机械能转换为电能。并且，压电陶瓷上产生的电势差和形成的电流方向与压电陶瓷的形变方向对应。可以理解的，当压电陶瓷在外力作用下产生振动时，压电陶瓷中可以形成交变电场，从而产生交流电信号。并且，压电陶瓷中产生交流电信号时，交流电信号的频率与压电陶瓷的振动频率相同。
具体地，在某些实施方式中，在电子设备100处于第一音频输出模式的情况下，驱动压电传感器30工作，即，压电传感器30产生形变，进而带动与压电传感器30连接的显示屏107振动发
声，以使压电传感器30作为输出音频的扬声器40使用，增强电子设备100的音频输出效果。此外，压电传感器30设置于壳体10内部，并与显示屏107连接以带动显示屏107振动发声，避免在电子设备100的壳体10上开设出声孔，保证壳体10的密封性。
在某些实施方式中，扬声器40可以是电磁式的电声转换器，即，扬声器40还包括振膜(图未示出)，在扬声器40工作时，扬声器40的内部产生磁场，进而带动振膜振动并压缩周围的空气，空气被压缩后推动显示屏107振动而发声。
具体地，在某些实施方式中，扬声器40设置于壳体10的内部，显示屏107与壳体10之间连通的空间形成扬声器40的前腔1071，在电子设备100处于第二音频输出模式的情况下，驱动扬声器40工作，扬声器40工作压缩前腔1071内的空气，前腔1071内的空气推动显示屏107进行振动发声，同时，压电传感器30工作并产生形变，以带动显示屏107振动发声，即，电子设备100通过压电传感器30与扬声器40的配合，共同带动显示屏107的振动发声，从而提升电子设备100的音频输出效果。
在某些实施方式中，电子设备100输出声音的方式是通过压电传感器30的形变传导至电子设备100的显示屏107，进而带动显示屏107振动发声；或通过压电传感器30的形变和扬声器40压缩前腔1071内的空气，进而共同带动显示屏107进行振动发声，因此，电子设备100上不需要设置出声孔，保证壳体10的密封性，增强电子设备100的防水效果。此外，电子设备100的正面也不需要预留听筒的位置，使得显示屏107的面积不会因需要避开听筒位置而减少，有效提高了显示屏107的屏占比。
在某些实施方式中，压电传感器30与扬声器40之间间隔设置，即，压电传感器30与扬声器40在壳体10内相对于显示屏107设置的位置不同，例如，压电传感器30设置于显示屏107的一端，则扬声器40可以设置于显示屏107相对的另一端，进而，在电子设备100处于第二音频输出模式的情况下，压电传感器30带动显示屏107的一端振动，同时扬声器40能够带动显示屏107相对的另一端进行振动，从而共同带动显示屏107的不同部位振动发声，因此，一方面能够营造电子设备100音频输出的立体效果，增大电子设备100发声的响度，另一方面，能够避免因显示屏107的两端振动不同步产生声场差，进而导致电子设备100的发声效果降低的问题，提升用户使用体验。
在某些实施方式中，压电传感器30与扬声器40可以分别使显示屏107发出较好的不同频域的音频，例如，压电传感器30可以使显示屏107发出效果较好的中高频域的声音，扬声器40可以使显示屏107发出效果较好的中低频域的声音，由此保证电子设备100在全频域的音频输出效果，提升用户的听觉体验。
在某些实施方式中，由于压电传感器30设置于壳体10内部，并与显示屏107连接以带动显示屏107振动发声；扬声器40设置于壳体10的内部，扬声器40工作压缩前腔1071内的空气，
以推动显示屏107振动发声，因此，在电子设备100的壳体10表面无需开设出声孔，进而保证壳体10的密封性能。
请参阅图5，在某些实施方式中，音频输出方法还可包括：
03：获取待输出音频数据；
04：获取待输出音频数据在电子设备100中对应的应用程序；及
05：根据应用程序与预设模式数据库确定电子设备100的音频输出模式，其中，预设模式数据库中存储有预设应用程序及与预设应用程序对应的预设音频输出模式。
请参阅图2，在某些实施方式中，电子设备100还包括设置于壳体10内的处理器20。处理器20用于获取待输出音频数据；获取待输出音频数据在电子设备100中对应的应用程序；根据应用程序与预设模式数据库确定电子设备100的音频输出模式，其中，预设模式数据库中存储有预设应用程序及与预设应用程序对应的预设音频输出模式。
请结合图6，在某些实施方式中，处理器20获取待输出的音频数据，并根据待输出的音频数据确定其对应的应用程序，且处理器20能够根据预设程序与预设模式数据库中预设应用程序-预设音频输出模式之间的映射关系，确定电子设备100的音频输出模式。
具体地，在某些实施方式中，将已知的应用程序(下称预设应用程序)和与预设应用程序对应的音频输出模式预存入预设模式数据库中。在电子设备100出厂前，先进行标定，具体为：通过操作电子设备100中不同的应用程序(已知)，以获取不同应用程序下的音频输出模式，将在不同应用程序下获得的音频输出模式作为预设音频输出模式。将多组预设应用程序和预设音频输出模式整理记录，以形成预设模式数据库。待用户对电子设备100进行操作时，一旦运行的应用程序能够从图7中的横坐标确定，就能够确定与该应用程序对应的预设音频输出模式，该预设音频输出模式即为电子设备100实际的音频输出模式。
在某些实施方式中，预设模式数据库可以是预存进存储器中，并可被处理器20读取获得。通过设置预设模式数据库，在处理器20确定待输出音频数据在电子设备100中对应的应用程序后，能够根据应用程序直接与预设模式数据库中的预设应用程序和预设音频输出模式进行比对分析，进而确定电子设备100的音频输出模式，使得处理器20对电子设备100的音频输出模式调整的效率更高。以下结合具体的应用场景说明本申请实施方式的音频输出方法。
在一个实施方式中，在用户使用电子设备100进行播放音乐时，处理器20能够获取待播放的音乐的音频数据，并确定该音频数据在电子设备100中对应的应为程序为音乐播放器，或其他能够播放音乐的程序，处理器20根据音乐播放器与预设模式数据库中的预设应用程序进行分析，以获得对应的音频输出模式为第二音频输出模式(外放模式)，则驱动压电传感器30与扬声器40共同工作，以带动显示屏107振动发声。
在另一个实施方式中，在用户使用电子设备100进行接听电话时，处理器20获取带播放的语
音的音频数据，并确定该音频数据在电子设备100中对应的应用程序为接听电话，或其他能够接听电话的程序，处理器20根据接听电话与预设模式数据库中的预设应用程序进行分析，以获得对应的音频输出模式为第一音频输出模式(听筒模式)，则驱动压电传感器30工作，以带动显示屏107振动发声。
请参阅图7，在某些实施方式中，音频输出方法还包括：
06：根据用户输入确定电子设备100的音频输出模式。
请结合图2及图4，在某些实施方式中，电子设备100还包括设置于壳体10内的处理器20，处理器20用于根据用户输入确定电子设备100的音频输出模式。以下结合具体的应用场景说明本申请实施方式的应用于电子设备100的音频输出方法。
在某些实施方式中，在用户使用电子设备100进行接听电话时，显示屏107上能够出现当前电子设备100音频输出模式的选择界面，用户能够根据具体需求确定电子设备100的音频输出模式，例如，用户选择当前音频输出模式为第二音频输出模式(外放模式，例如扬声器模式)，即，驱动压电传感器30与扬声器40共同工作，以带动显示屏107振动发声，以实现通话。
请参阅图8，在某些实施方式中，01：在电子设备100处于第一音频输出模式的情况下，驱动压电传感器30工作形变，包括：
011：解析待输出音频数据，以获得音频信号；及
013：增强音频信号后，驱动压电传感器30工作。
请结合图9，在某些实施方式中，电子设备100还包括处理器20和第一放大器50。处理器20用于解析待输出音频数据，以获得音频信号。第一放大器50电性连接于处理器20和压电传感器30之间，用于增强音频信号后，驱动压电传感器30工作。
具体地，在某些实施方式中，在电子设备100处于第一音频输出模式的情况下，处理器20还能够对获取的待输出音频数据进行解码等处理，以获得对应的音频信号，并将音频信号传输至第一放大器50。例如，当电子设备100播放音乐时，电子设备100中的处理器20可以对待播放的音乐数据进行处理，从而获得待播放音乐的音频信号，并将音频信号传输至第一放大器50；再例如，当电子设备100进行语音通话时，处理器20对电子设备100接收到的通话对象的语音数据进行处理，从而获得语音数据的音频信号，并将音频信号传输至第一放大器50。
在某些实施方式中，第一放大器50与压电传感器30电性连接。处理器20将待输出音频数据解析后获得的音频信号传输至第一放大器50，第一放大器50能够对音频信号的功率进行放大，并将放大后的音频信号传输至压电传感器30，以驱动压电传感器30产生形变，带动显示屏107振动发声。
在某些实施方式中，第一放大器50可以是A类、B类、AB类、D类、K类音频功率放大器、智能功率放大器Smart PA(Power Amplifier，功率放大器)等任意一种音频功率放大器，在此不作限
制。
请参阅图10，在某些实施方式中，02：在电子设备100处于第二音频输出模式的情况下，驱动压电传感器30工作形变及驱动扬声器40压缩前腔1071的空气，包括：
021：解析待输出音频数据，以获得音频信号；
023：采用滤波算法对音频信号进行滤波处理；
025：增强滤波后的音频信号后，驱动压电传感器30工作；及
027：增强未滤波后的音频信号后，驱动扬声器40压缩前腔1071的空气。
请结合图9，在某些实施方式中，电子设备100还包括第二放大器60，处理器20还用于采用滤波算法对音频信号进行滤波处理；第一放大器50还用于增强滤波后的音频信号后，驱动压电传感器30工作，以带动显示屏107振动；第二放大器60电性连接于处理器20和扬声器40之间，用于增强未滤波的音频信号后，驱动扬声器40压缩前腔1071的空气，以带动显示屏107振动。
具体地，在某些实施方式中，在电子设备100处于第二音频输出模式的情况下，处理器20能够对待输出音频数据进行解析，以获得对应的音频信号，并采用滤波算法对音频信号进行滤波处理，并将滤波后的音频信号传输至第一放大器50，及将未滤波的音频信号传输至第二放大器60，以分别放大滤波后的音频信号的功率及未滤波的音频信号的功率，其中，第一放大器50将放大功率后的音频信号传输至压电传感器30，以使压电传感器30工作形变，第二放大器60将放大功率后的音频信号传输至扬声器40，以驱动扬声器40压缩前腔1071内的空气，进而共同带动显示屏107的振动发声。
在某些实施方式中，由于压电传感器30属于容性器件，对中高频域的音频信号具有较好的响应效果，而在低频时的阻抗较高，因此，处理器20中还设置有滤波算法，用于在音频信号传输至第一放大器50进行功率放大前，对音频信号进行滤波处理，以去除或者衰减音频信号中的低频信号，保留音频信号中的中高频信号，并将中高频信号输入至第一放大器50中进行功率放大处理，通过放大功率后的中高频信号驱动压电传感器30工作以产生形变，进而带动显示屏107振动发声，以保证声音中具有较佳的中高频音域。电子设备100通过处理器20中的滤波算法对输入至压电传感器30的音频信号进行滤波处理，以去除音频信号中的低频信号，一方面可以使压电传感器30带动显示屏107振动发出的声音具有较佳的中高频音域，提升电子设备100的音频输出效果，另一方面还能够避免因压电传感器30在低频时的阻抗过高导致电子设备100的功耗过高的问题。另外，处理器20采用的是滤波算法，而并非额外设置硬件的滤波器件，更能简化结构，节省成本。
在某些实施方式中，将未进行滤波处理的音频信号传输至第二放大器60，并由第二放大器60放大功率后再传输至扬声器40中，进而驱动扬声器40压缩前腔1071内的空气，进而推动显示屏107进行振动发声。由于电子设备100的壳体10为密封壳体10，且壳体10内的与显示屏107连通的空间均形成扬声器40的前腔1071，使得扬声器40的截止频率(Fh)较低，因此，扬声器40
带动显示屏107振动发声的低频效果较好。在电子设备100处于第二音频输出模式的情况下，驱动压电传感器30工作形变并带动显示屏107振动发声，以提供较佳的中高频域的音频，驱动扬声器40压缩前腔1071内空气并推动显示屏107振动发声，以提供较佳的中低频域的音频，进而保证电子设备100在全频域的音频输出效果，提升用户的听觉体验。
在某些实施方式中，处理器20中的滤波算法还能够对传输至第二放大器60的音频信号进行滤波处理，即，去除或衰减音频信号中的中高频信号，保留音频信号中的低频信号，并将低频信号输入至第二放大器60中进行功率放大处理，通过放大功率后的低频信号驱动扬声器40压缩前腔1071内的空气，以使显示屏107振动发声，从而避免扬声器40输出中高频信号时出现失真的问题，提升电子设备100的音频输出效果。
图11为电子设备100中压电传感器30和扬声器40的频响分析图，其中，L1为压电传感器30和扬声器40共同工作使显示屏107发声的频响分析曲线，L2为压电传感器30工作使显示屏107发声的频响分析曲线，L3为扬声器40工作使显示屏107发声的频响分析曲线。人耳能分辨的全频段声音频率范围大概是：200Hz～20000Hz，从图11可以看出，仅压电传感器30带动显示屏107发声时，声音中的中高频域效果较好，如曲线L2所示；而仅扬声器40带动显示屏107发声时，声音中的中低频域效果较好，如曲线L3所示。当压电传感器30和扬声器40共同工作带动显示屏107发声时，声音中的中高频域和中低频域的效果均较好，如曲线L1所示。其中，在某些实施方式中，中低频域的范围可以是200Hz～2500Hz，中高频域的范围可以是2000Hz～20000Hz。需要说明的是，在某些实施方式中，在不同电子设备100中的频域范围会有所差别，例如，在性能较好的电子设备100中，中低频域的范围可以是200Hz～3000Hz，中高频域的范围可以是2000Hz～20000Hz。
在某些实施方式中，由于驱动压电传感器30进行振动发声的功率需求比较大，因此，第一放大器50的工作电压可以设置的较大。例如，第一放大器50的工作电压可以设置为10V(伏特)。而由于驱动扬声器40发声的功率需求比较小，因此第二放大器60的工作电压可以设置的较小。例如，第二放大器60的工作电压可以设置为4.8V。即，第一放大器50的工作电压可大于第二放大器60的工作电压。
在某些实施方式中，第二放大器60也可以是A类、B类、AB类、D类、K类音频功率放大器、智能功率放大器等任意一种音频功率放大器，在此不作限制。
在某些实施方式中，为了避免压电传感器30和扬声器40在工作过程中因电压不稳而受到损坏，第一放大器50和第二放大器60可为智能功率放大器，以对压电传感器30和扬声器40进行保护。例如，第二放大器60可以实时检测扬声器40的阻抗和温度系数，从而可以实时调整第二放大器60的工作电压，使第二放大器60的工作电压维持在安全电压范围内。
在某些实施方式中，第一放大器50和第二放大器60通过串行总线(I2C)与处理器20电性
连接，以使处理器20能够选择将音频信号传输至第一放大器50和/或第二放大器60，以使得第一放大器50和第二放大器60分别驱动压电传感器30和扬声器40工作。其中，通过串行总线连接处理器20和第一放大器50及第二放大器60，进而简化电路PCB布线，降低生产成本，提高电路系统的可靠性。
请参阅图3和图4，在某些实施方式中，壳体10可包括前壳101、后壳103及位于前壳101和后壳103之间的中框105，且前壳101、后壳103及位于前壳101和后壳103之间的中框105密封连接，以保证壳体10的密封，提升壳体10的防水性。显示屏107安装于前壳101并与中框105间隔，扬声器40安装于中框105并与显示屏107间隔，前腔1071由壳体10内的位于显示屏107与扬声器40之间的连通区域形成。
在某些实施方式中，中框105可以是板状、片状或其他形状的结构，中框105用于为电子设备100中的电子器件或功能组件提供支撑作用，以将电子设备100的电子器件、功能组件安装到一起，其中，中框105上设置有通孔、凹槽、凸起等结构，以便于安装电子设备100中的电子器件或功能器件。例如，中框105上设置有通孔，压电传感器30穿过通孔与显示屏107连接，扬声器40安装于中框105，并与显示屏107间隔设置。需要说明的是，在某些实施方式中，中框105的材质可以是金属、塑胶等，在此不作限制。
在某些实施方式中，壳体10内与显示屏107连通的空间形成扬声器40的前腔1071，即，显示屏107与前壳101、后壳103及中框105之间形成的空间均为扬声器40的前腔1071，进而增大扬声器40的前腔1071体积，以使扬声器40能够压缩前腔1071内的空气，进而推动显示屏107振动发声，以在无需滤波情况下也能保证较佳的中低频域的音频，且无需在壳体10上开设出声孔，保证壳体10的封闭性。
请参阅图3，在某些实施方式中，电子设备100还包括第一电路板70和第二电路板80。其中，第一电路板70与压电传感器30电性连接。第二电路板80与扬声器40电性连接。
具体地，在某些实施方式中，第一电路板70和第二电路板80均位于中框105与后壳103之间。在一个实施例中，第一电路板70和第二电路板80可以设置于中框105上，以进行固定。处理器20安装于第一电路板70或第二电路板80，以确定电子设备100的音频输出模式，控制压电传感器30工作或压电传感器30和扬声器40共同工作，以带动显示屏107振动发声。在某些实施方式中，第一电路板70或第二电路板80还能与显示屏107电性连接，以通过第一电路板70或第二电路板80上的处理器20对显示屏107的显示进行控制。
在某些实施方式中，电子设备100中的电路板为一个，即，一个电路板同时与压电传感器30和扬声器40电性连接，处理器20安装于电路板上，以确定电子设备100的音频输出模式，控制压电传感器30工作或压电传感器30和扬声器40共同工作，以带动显示屏107振动进行发声。
在某些实施方式中，电子设备100还可包括电池90，电池90用于为第一电路板70、第二电
路板80及其他电子器件供电。电池90设置于壳体10的内部，例如，电池90可以固定安装于壳体10的中框105上，或电池90还能够固定安装于后壳103上。
请参阅图1、图4及图12，本申请实施方式还提供一种计算机可读存储介质200，其上存储有计算机程序202。程序被处理器20执行的情况下，实现上述任一实施方式的音频输出方法。
例如，程序被处理器20执行的情况下，实现如下音频输出方法：
01：在电子设备100处于第一音频输出模式的情况下，驱动压电传感器30工作形变，以带动与压电传感器30连接的显示屏107振动而发声；
02：在电子设备100处于第二音频输出模式的情况下，驱动压电传感器30工作形变及驱动扬声40器压缩前腔1071的空气，以使压电传感器30的形变和前腔1071内空气的推动共同带动显示屏107振动而发声；第一音频输出模式与第二音频输出模式不同。
又例如，程序被处理器20执行的情况下，实现如下音频输出方法：
03：获取待输出音频数据；
04：获取待输出音频数据在电子设备100中对应的应用程序；及
05：根据应用程序与预设模式数据库确定电子设备100的音频输出模式，其中，预设模式数据库中存储有预设应用程序及与预设应用程序对应的预设音频输出模式。
需要指出的是，前述实施方式中对本申请实施方式的音频输出方法和电子设备100的解释说明同样适用于本申请实施方式的计算机可读存储介质200，在此不再展开说明。
本申请中的非易失性计算机可读存储介质200中，在第二音频输出模式下，可驱动压电传感器与扬声器共同工作，以使压电传感器的形变和前腔内空气的推动共同带动显示屏振动而发声；其中，压电传感器形变而带动显示屏振动可保证中高频域的音频的音效，而扬声器压缩前腔内空气并推动显示屏振动可保证中低频域的音频的音效，由此可保证电子设备在全频域的音频的输出效果，提升用户的听觉体验。
可以理解，计算机程序202包括计算机程序代码。计算机程序代码可以为源代码形式、对象代码形式、可执行文件或某些中间形式等。计算机可读存储介质可以包括：能够携带计算机程序代码的任何实体或装置、记录介质、U盘、移动硬盘、磁碟、光盘、计算机存储器、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、以及软件分发介质等。处理器可以是中央处理器，还可以是其他通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现场可编程门阵列(Field-Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于
本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
流程图中或在此以其他方式描述的任何过程或方法描述可以被理解为，表示包括一个或更多个用于实现特定逻辑功能或过程的步骤的可执行指令的代码的模块、片段或部分，并且本申请的优选实施方式的范围包括另外的实现，其中可以不按所示出或讨论的顺序，包括根据所涉及的功能按基本同时的方式或按相反的顺序，来执行功能，这应被本申请的实施例所属技术领域的技术人员所理解。
尽管上面已经示出和描述了本申请的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本申请的限制，本领域的普通技术人员在本申请的范围内可以对上述实施例进行变化、修改、替换和变型。
Claims (20)
- 一种电子设备的音频输出方法，其中，包括：在所述电子设备处于第一音频输出模式的情况下，驱动压电传感器工作形变，以带动与所述压电传感器连接的显示屏振动而发声；及在所述电子设备处于第二音频输出模式的情况下，驱动压电传感器工作形变及驱动扬声器压缩前腔的空气，以使所述压电传感器的形变和所述前腔内空气的推动共同带动所述显示屏振动而发声；所述第一音频输出模式与所述第二音频输出模式不同。
- 根据权利要求1所述的音频输出方法，其中，还包括：获取待输出音频数据；获取所述待输出音频数据在所述电子设备中对应的应用程序；及根据所述应用程序与预设模式数据库确定所述电子设备的音频输出模式，其中，所述预设模式数据库中存储有预设应用程序及与所述预设应用程序对应的预设音频输出模式。
- 根据权利要求1所述的音频输出方法，其中，还包括：根据用户输入确定所述电子设备的音频输出模式。
- 根据权利要求1所述的音频输出方法，其中，在所述电子设备处于第一音频输出模式的情况下，驱动压电传感器工作形变，包括：解析待输出音频数据，以获得音频信号；及增强所述音频信号后，驱动所述压电传感器工作。
- 根据权利要求1所述的音频输出方法，其中，在所述电子设备处于第二音频输出模式的情况下，驱动压电传感器工作形变及驱动扬声器压缩前腔的空气，包括：解析待输出音频数据，以获得音频信号；采用滤波算法对所述音频信号进行滤波处理；增强滤波后的所述音频信号后，驱动所述压电传感器工作；及增强未滤波后的所述音频信号后，驱动所述扬声器压缩前腔的空气。
- 根据权利要求1所述的音频输出方法，其中，所述第一音频输出模式包括听筒模式；所述第二音频输出模式包括外放模式。
- 一种电子设备，其中，包括：壳体；设置于所述壳体上的显示屏；与所述显示屏连接的压电传感器；及设置于所述壳体内的扬声器，所述壳体内与所述显示屏连通的空间形成所述扬声器的前腔；其中：在所述电子设备处于第一音频输出模式的情况下，所述压电传感器工作形变，以带动所述显示屏振动而发声；在所述电子设备处于第二音频输出模式的情况下，所述压电传感器工作形变及所述扬声器压 缩所述前腔的空气，以使所述压电传感器的形变和所述前腔内空气的推动共同带动所述显示屏振动而发声；所述第一音频输出模式与所述第二音频输出模式不同。
- 根据权利要求7所述的电子设备，其中，所述电子设备还包括设于所述壳体的处理器，所述处理器用于：获取待输出音频数据；获取所述待输出音频数据在所述电子设备中对应的应用程序；及根据所述应用程序与预设模式数据库确定所述电子设备的音频输出模式，其中，所述预设模式数据库中存储有预设应用程序及与所述预设应用程序对应的预设音频输出模式。
- 根据权利要求7所述的电子设备，其中，所述电子设备还包括设于所述壳体的处理器，所述处理器用于：根据用户输入确定所述电子设备的音频输出模式。
- 根据权利要求7所述的电子设备，其中，所述电子设备还包括：处理器，用于解析待输出音频数据，以获得音频信号；及第一放大器，电性连接于所述处理器和所述压电传感器之间，用于增强所述音频信号后，驱动所述压电传感器工作。
- 根据权利要求10所述的电子设备，其中，所述处理器还用于采用滤波算法对所述音频信号进行滤波处理；所述第一放大器还用于增强滤波后的所述音频信号后，驱动所述压电传感器工作；所述电子设备还包括：第二放大器，电性连接于所述处理器和所述扬声器之间，用于增强未滤波的所述音频信号后，驱动所述扬声器压缩前腔的空气。
- 根据权利要求11所述的电子设备，其中，所述第一放大器和所述第二放大器通过串行总线与所述处理器电性连接。
- 根据权利要求7所述的电子设备，其中，所述第一音频输出模式包括听筒模式；所述第二音频输出模式包括外放模式。
- 根据权利要求7所述的电子设备，其中，所述壳体包括前壳、后壳及位于所述前壳和所述后壳之间的中框；所述显示屏安装于所述前壳并与所述中框间隔，所述扬声器安装于所述中框并与所述显示屏间隔，所述前腔由所述壳体内的位于所述显示屏与所述扬声器之间的连通区域形成。
- 根据权利要求14所述的电子设备，其中，所述电子设备还包括设于所述壳体的处理器，所述电子设备还包括均位于所述中框与所述后壳之间的：第一电路板，与所述压电传感器电性连接；及第二电路板，与所述扬声器电性连接；所述处理器安装于所述第一电路板或所述第二电路板。
- 根据权利要求14所述的电子设备，其中，所述电子设备还包括设于所述壳体的处理器及均位于所述中框与所述后壳之间的电路板，所述压电传感器及所述扬声器均与所述电路板电性连接，所述处理器安装于所述电路板。
- 一种计算机可读存储介质，其上存储有计算机程序，其中，所述程序被处理器执行的情况下，实现音频输出方法，所述音频输出方法包括：在电子设备处于第一音频输出模式的情况下，驱动压电传感器工作形变，以带动与所述压电传感器连接的显示屏振动而发声；及在所述电子设备处于第二音频输出模式的情况下，驱动压电传感器工作形变及驱动扬声器压缩前腔的空气，以使所述压电传感器的形变和所述前腔内空气的推动共同带动所述显示屏振动而发声；所述第一音频输出模式与所述第二音频输出模式不同。
- 根据权利要求17所述的计算机可读存储介质，其中，所述音频输出方法还包括：获取待输出音频数据；获取所述待输出音频数据在所述电子设备中对应的应用程序；及根据所述应用程序与预设模式数据库确定所述电子设备的音频输出模式，其中，所述预设模式数据库中存储有预设应用程序及与所述预设应用程序对应的预设音频输出模式。
- 根据权利要求17所述的计算机可读存储介质，其中，在所述电子设备处于第一音频输出模式的情况下，驱动压电传感器工作形变，包括：解析待输出音频数据，以获得音频信号；及增强所述音频信号后，驱动所述压电传感器工作。
- 根据权利要求17所述的计算机可读存储介质，其中，在所述电子设备处于第二音频输出模式的情况下，驱动压电传感器工作形变及驱动扬声器压缩前腔的空气，包括：解析待输出音频数据，以获得音频信号；采用滤波算法对所述音频信号进行滤波处理；增强滤波后的所述音频信号后，驱动所述压电传感器工作；及增强未滤波后的所述音频信号后，驱动所述扬声器压缩前腔的空气。
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