Articulatory sound production method and articulatory sound production device

Abstract

The application provides a simulation sound production method and a simulation sound production device.The simulation sound production method comprises the following steps: providing a sound production driving signal, wherein the sound production driving signal is a high-frequency carrier signal; obtaining a target audio signal, and generating a microswitch driving signal based on the positive and negative of the target audio signal at different time points; controlling the microswitch to be turned on at different time points through the microswitch driving signal, outputting the positive pulse or the negative pulse of the corresponding period of the sound production driving signal, and realizing the demodulation of the target audio signal.Through the simulation sound production method and the simulation sound production device, the problem that the audio frequency band cannot be fully covered and the sound volume is low in the existing simulation micro loudspeaker is solved, and the effect of full-band high-fidelity and high-sound-pressure sound production is realized.

Description

Technical Field

[0001] The present invention relates to the field of simulated sound generation, and in particular to a simulated sound generation method and a simulated sound generation device. Background Art

[0002] Analog micro speakers are small audio output devices that primarily utilize analog sound generation technology. Existing analog micro speakers, while maintaining a limited size, struggle to cover the entire audio frequency band and produce high-fidelity sound at sufficiently high sound pressure levels. Therefore, achieving full audio frequency coverage and high-pressure sound generation with micro speakers is a pressing technical challenge for those skilled in the art.

[0003] It should be noted that the above technical background is merely provided to provide a clear and complete description of the technical solutions of the present invention and to facilitate understanding by those skilled in the art. Simply because these solutions are described in the technical background section of the present invention, it should not be assumed that the above technical solutions are well known to those skilled in the art. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a simulated sound generation method and simulated sound generation device to solve the problems of the existing simulated micro speakers in that the audio frequency band cannot be fully covered and the sound volume is low.

[0005] To achieve the above-mentioned and other related purposes, the present invention provides a method for simulating sound production, the method comprising:

[0006] Providing a sound driving signal, wherein the sound driving signal is a high-frequency carrier signal;

[0007] Acquire a target audio signal, and generate a micro switch driving signal based on the positive and negative values ​​of the target audio signal at different times;

[0008] The microswitch is controlled to open at different times by the microswitch driving signal, and the positive pulse or negative pulse of the corresponding period in the sound driving signal is output to realize the demodulation of the target audio signal.

[0009] Optionally, the method for generating the sound driving signal includes: acquiring the target audio signal, and performing amplitude modulation on the target audio signal based on a high-frequency signal to generate the high-frequency carrier signal as the sound driving signal.

[0010] Optionally, the volume of the target audio signal is adjusted by adjusting the amplitude of the high-frequency signal.

[0011] Optionally, the method for generating the micro-switch drive signal includes: setting an open position at a positive pulse or negative pulse phase corresponding to a corresponding period in the sound drive signal based on the positive or negative of the target audio signal at different times, and generating the micro-switch drive signal based on the open position corresponding to different times.

[0012] Optionally, the method for demodulating the target audio signal includes: demodulating the target audio signal based on an envelope of pulses output at different moments by the sound driving signal.

[0013] Optionally, the volume of the target audio signal is adjusted by adjusting the number of micro switches that are turned on.

[0014] The present invention also provides a simulated sound-generating device, comprising:

[0015] a control unit and at least one sound-generating unit, wherein the sound-generating unit includes a chamber, a sound-generating power source, and a microswitch;

[0016] The control unit generates a micro switch driving signal based on the positive and negative values ​​of the target audio signal at different times;

[0017] The sound power source is provided at one side of the chamber and is used to generate a sound driving signal, wherein the sound driving signal is a high-frequency carrier signal;

[0018] The micro switch is arranged on the other side of the chamber and is electrically connected to the control unit. The micro switch is controlled to open at different times by the micro switch driving signal, and the positive pulse or negative pulse of the corresponding period in the sound driving signal is output to realize the demodulation of the target audio signal.

[0019] Optionally, the sound power source is also electrically connected to the control unit, and is used to, under the control of the control unit, modulate the target audio signal based on the high-frequency signal to generate the high-frequency carrier signal as the sound driving signal.

[0020] Optionally, the control unit sets an open position at a positive pulse or negative pulse phase corresponding to a corresponding period in the sound driving signal based on the positive or negative of the target audio signal at different times, and generates the micro switch driving signal based on the open position corresponding to different times.

[0021] Optionally, the number of the sound-emitting parts is greater than one, wherein the sound-emitting parts are arranged in parallel.

[0022] As described above, the simulated sound generation method and simulated sound generation device of the present invention, through the cooperation of the sound generation power source and the microswitch, only involve positive pulses or negative pulses at any time when demodulating the target audio signal, and there is no situation where the positive and negative pulses cancel each other out, which is conducive to achieving high sound pressure; moreover, the demodulation method based on the output pulse envelope is conducive to achieving full frequency band; it can be seen that the present invention can achieve full coverage of the audio frequency band and high sound pressure sound generation while ensuring the small size of the simulated sound generation device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Shown is a structural schematic diagram of a simulated sound generating device according to an embodiment of the present invention.

[0024] Figure 2 Shown is another structural schematic diagram of the simulated sound generating device according to an embodiment of the present invention.

[0025] Figure 3 Shown is a flow chart of a method for simulating vocalization according to an embodiment of the present invention.

[0026] Figure 4 Shown is a waveform diagram of relevant signals involved in the simulated sound production process in an embodiment of the present invention.

[0027] Figure 5 Shown is another waveform diagram of related signals involved in the simulated sound production process in an embodiment of the present invention.

[0028] Figure 6 Shown is another waveform diagram of related signals involved in the simulated sound production process in an embodiment of the present invention.

[0029] Figure 7 FIG2 is a schematic diagram showing a method of adjusting the volume of a target audio signal according to an embodiment of the present invention.

[0030] Component number description

[0031] 100 Simulated sound device

[0032] 110 Control Department

[0033] 120 Vocalization

[0034] 121 Chamber

[0035] 122 Sound Power Source

[0036] 123 Micro Switch DETAILED DESCRIPTION

[0037] The following describes the embodiments of the present invention through specific examples. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered based on different viewpoints and applications without departing from the spirit of the present invention.

[0038] See also Figures 1 to 7 It should be noted that the illustrations provided in this embodiment are merely schematic illustrations of the basic concept of the present invention. Therefore, the illustrations only show components related to the present invention and are not drawn according to the number, shape, and size of components in actual implementation. In actual implementation, the form, quantity, and proportion of each component may be changed arbitrarily, and the component layout may also be more complex.

[0039] like Figure 1 As shown, this embodiment provides a simulated sound-generating device 100, comprising a control unit 110 and a sound-generating unit 120. The sound-generating unit 120 includes a chamber 121, a sound-generating power source 122, and a microswitch 123. In practical applications, the chamber 121, the sound-generating power source 122, and the microswitch 123 may be an integrated structure or a combined structure, without limitation.

[0040] The control unit 110 generates a microswitch drive signal based on the positive or negative value of the target audio signal at different times. Specifically, the control unit 110 sets an open position corresponding to the positive or negative pulse phase of the corresponding period of the sound drive signal based on the positive or negative value of the target audio signal at different times, and generates the microswitch drive signal based on the corresponding open position at different times.

[0041] The chamber 121 is used to fix the sound power source 122 and the micro switch 123, and cooperate with the sound power source 121 and the micro switch 123 to provide a sound space to prevent the sound driving signal generated by the sound power source 121 from overflowing through other channels except the micro switch 123, thereby affecting the demodulation of the target audio signal.

[0042] The sound power source 122 is arranged on one side of the chamber 121, for example, the sound power source 122 is arranged on the lower side of the chamber 121; the sound power source 122 is used to generate a sound driving signal, wherein the sound driving signal is a high-frequency carrier signal. Specifically, the sound power source 122 is electrically connected to the control unit 110, and is used to, under the control of the control unit 110, modulate the target audio signal based on the high-frequency signal to generate a high-frequency carrier signal as the sound driving signal; wherein the period of the sound driving signal is the same as the period of the high-frequency signal, and the amplitudes of the positive pulses and the negative pulses in any period are not equal. In one example, the sound power source 122 includes an ultrasonic transducer, a piezoelectric sounder, an electrostatic sounder or a dynamic sounder. Of course, the sound power source 122 can also include other forms of sound-generating devices, which are not limited to this.

[0043] Microswitch 123 is disposed on the other side of chamber 121, for example, on the upper side of chamber 121. Microswitch 123 is electrically connected to control unit 110 and is controlled by a microswitch drive signal to activate at different times, thereby outputting positive or negative pulses corresponding to the period of the sound drive signal, thereby demodulating the target audio signal. Microswitch 123 switches on and off based on the microswitch drive signal. For example, when the microswitch drive signal is high, microswitch 123 is on, and when the microswitch drive signal is low, microswitch 123 is off.

[0044] In the simulated sound-generating device 100 of this embodiment, the number of the sound-generating parts 120 can be one or more than one. In practical applications, the number of the sound-generating parts 120 can be designed in combination with specific requirements (for example, volume), and there is no limitation on this. When there are multiple sound-generating parts 120, each sound-generating part 120 is set in parallel, such as Figure 2 In the analog sound-generating device 100, a plurality of sound-generating parts 120 are designed. By controlling the number of micro-switches 123 corresponding to each sound-generating part 120 being turned on, the volume of the target audio signal can be adjusted.

[0045] like Figure 3 As shown, this embodiment also provides a simulated sound method, including the following steps; wherein, the simulated sound method can be implemented based on the simulated sound device 100 described above, and of course, can also be implemented based on other simulated sound devices, without limitation.

[0046] Step S1, providing a sound driving signal, wherein the sound driving signal is a high-frequency carrier signal. Specifically, the method for generating the sound driving signal includes: obtaining a target audio signal, and performing amplitude modulation on the target audio signal based on the high-frequency signal to generate a high-frequency carrier signal as the sound driving signal, wherein the period of the sound driving signal is the same as the period of the high-frequency signal, and the amplitudes of the positive pulses and the negative pulses in any period are different, such as Figures 4 to 6 In practical applications, the higher the frequency of the high-frequency signal, the higher the frequency of the sound driving signal, and the better the accuracy of the final demodulated target audio signal.

[0047] Step S2: Acquire the target audio signal and generate a micro-switch drive signal based on the positive or negative value of the target audio signal at different times. Specifically, the method for generating the micro-switch drive signal includes: setting an open position at the positive pulse or negative pulse phase of the corresponding period in the sound drive signal based on the positive or negative value of the target audio signal at different times, and generating the micro-switch drive signal based on the corresponding open position at different times, such as Figures 4 to 6 For example, the target audio signal is positive from the first moment to the fifth moment and negative from the sixth moment to the tenth moment. Then, corresponding to the sound driving signal, the open position is set at the positive pulse phase of the first cycle to the fifth cycle, and the open position is set at the negative pulse phase of the sixth cycle to the tenth cycle. In this way, the micro switch driving signal is obtained based on the open position corresponding to different moments. Figure 4 For example, if the target audio signal is positive from the first moment to the tenth moment, then the open position is set at the positive pulse phase of the first cycle to the tenth cycle corresponding to the sound driving signal. In this way, the micro switch driving signal is obtained based on the open position corresponding to different moments. Figure 5 For example, if the target audio signal is negative from the first moment to the tenth moment, then the open position is set at the negative pulse phase of the first cycle to the tenth cycle corresponding to the sound driving signal. In this way, the micro switch driving signal is obtained based on the open position corresponding to different moments. Figure 6 It should be noted that Figures 4 to 6 In order to clearly illustrate the micro-switch drive signal, its open position does not correspond to the corresponding pulse of the corresponding period of the sound drive signal. However, combined with the above description, those skilled in the art should understand that each open position of the micro-switch drive signal actually corresponds to the corresponding pulse of the corresponding period in the sound drive signal. In this way, the corresponding pulse of the corresponding period can be output based on the open micro-switch.

[0048] Step S3, the micro switch 123 is controlled to open at different times by the micro switch driving signal, and the positive pulse or negative pulse of the corresponding period in the sound driving signal is output to realize the demodulation of the target audio signal, such as Figures 4 to 6For example, based on the opening of the micro switch, the positive pulses of the first to fifth cycles of the sound drive signal are output, and the negative pulses of the sixth to tenth cycles of the sound drive signal are output, and the target audio signal is demodulated based on the output pulses. Figure 4 For example, based on the opening of the micro switch, the positive pulses of the first cycle to the tenth cycle in the sound driving signal are output, and the target audio signal is demodulated based on the output pulses. Figure 5 For example, based on the opening of the micro switch, the negative pulses of the first cycle to the tenth cycle in the sound driving signal are output, and the target audio signal is demodulated based on the output pulses. Figure 6 Specifically, the method for demodulating the target audio signal includes: demodulating the target audio signal based on the envelope of the pulses output at different times by the sound driving signal; that is, the envelope of the pulses output at different times forms the target audio signal.

[0049] In the simulated sound generation method of this embodiment, if the target audio signal is positive at a certain moment, the microswitch is controlled by the microswitch drive signal to open at the positive pulse phase of the corresponding cycle in the sound generation drive signal, and at the same time, the microswitch is controlled to close at the negative pulse phase of the corresponding cycle in the sound generation drive signal. If the target audio signal is negative at a certain moment, the microswitch is controlled by the microswitch drive signal to open at the negative pulse phase of the corresponding cycle in the sound generation drive signal, and at the same time, the microswitch is controlled to close at the positive pulse phase of the corresponding cycle in the sound generation drive signal. In this way, the target audio signal is demodulated at different moments and the audio reconstruction is completed. By performing the demodulation of the target audio signal in the above manner, only positive pulses or negative pulses are involved at any moment, and there is no situation where positive and negative pulses cancel each other out. Therefore, the final demodulated target audio signal has a high sound pressure (i.e., a high volume). Moreover, demodulating the target audio signal based on the envelope of the output pulse can cover a lower frequency band, which is conducive to achieving full-band (20Hz to 20,000Hz) sound generation.

[0050] In addition, the simulated sound generation method of this embodiment also includes a volume adjustment step to further increase the sound pressure of the target audio signal. In one example, the volume of the target audio signal is adjusted by adjusting the amplitude of the high-frequency signal. In a specific implementation, the amplitude of each pulse in the sound generation drive signal is adjusted by adjusting the amplitude of the high-frequency signal, and ultimately the volume of the target audio signal is adjusted. For example, if the amplitude of the high-frequency signal is adjusted to twice the original value, the volume of the target audio signal is twice the original value. If the amplitude of the high-frequency signal is adjusted to five times the original value, the volume of the target audio signal is five times the original value. Figure 7The waveforms of relevant signals during the volume adjustment process are shown, where dotted lines correspond to the signals before adjustment, and solid lines correspond to the signals after adjustment. In another example, the volume of a target audio signal is adjusted by adjusting the number of microswitches that are activated. In a specific implementation, multiple sound-generating parts are designed in an analog sound-generating device, and the volume of the target audio signal is adjusted by controlling the number of microswitches that are activated for each sound-generating part. For example, if a simulated sound-generating device has five sound-generating parts, there are five corresponding microswitches. If two microswitches are activated simultaneously, the volume of the target audio signal is doubled, and if all five microswitches are activated simultaneously, the volume of the target audio signal is five times the original volume.

[0051] In summary, the present invention's simulated sound generation method and device, through the coordination of a sound generation power source and a microswitch, demodulates the target audio signal, involving only positive or negative pulses at any given moment, preventing the positive and negative pulses from canceling each other out, thus facilitating high sound pressure. Furthermore, the demodulation method based on the output pulse envelope facilitates full frequency coverage. This demonstrates that the present invention, while maintaining a compact simulated sound generation device, can achieve full audio frequency coverage and high sound pressure. Therefore, the present invention effectively overcomes the various shortcomings of the prior art and possesses high industrial value.

[0052] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A method for simulating sound production, characterized in that: The simulated sound method comprises: Providing a sound driving signal, wherein the sound driving signal is a high-frequency carrier signal; Acquire a target audio signal, and generate a micro switch driving signal based on the positive and negative values ​​of the target audio signal at different times; The microswitch is controlled to open at different times by the microswitch driving signal, and the positive pulse or negative pulse of the corresponding period in the sound driving signal is output to realize the demodulation of the target audio signal; in: The method for generating a sound driving signal includes: obtaining a target audio signal, and performing amplitude modulation on the target audio signal based on a high-frequency signal to generate the high-frequency carrier signal as the sound driving signal; wherein the period of the sound driving signal is the same as the period of the high-frequency signal, and the amplitudes of positive pulses and negative pulses of the sound driving signal in any period are different; The method for demodulating the target audio signal includes: demodulating the target audio signal based on the envelope of pulses output at different times by the sound driving signal.

2. The method for simulating sound production according to claim 1, wherein: The volume of the target audio signal is adjusted by adjusting the amplitude of the high-frequency signal.

3. The method for simulating sound production according to claim 1 or 2, wherein: The method for generating the micro-switch drive signal includes: setting an open position at a positive pulse or negative pulse phase corresponding to a corresponding period in the sound drive signal based on the positive or negative state of the target audio signal at different times, and generating the micro-switch drive signal based on the open positions corresponding to the different times.

4. The method for simulating sound production according to claim 1, wherein: The volume of the target audio signal is adjusted by adjusting the number of micro switches that are turned on.

5. A simulated sound device, characterized in that: The simulated sound device comprises: a control unit and at least one sound-generating unit, wherein the sound-generating unit includes a chamber, a sound-generating power source, and a microswitch; The control unit generates a micro switch driving signal based on the positive and negative values ​​of the target audio signal at different times; The sound power source is provided at one side of the chamber and is used to generate a sound driving signal, wherein the sound driving signal is a high-frequency carrier signal; The micro switch is disposed on the other side of the chamber and is electrically connected to the control unit. The micro switch is controlled by the micro switch drive signal to be turned on at different times, thereby outputting positive pulses or negative pulses of corresponding periods in the sound drive signal, so as to demodulate the target audio signal based on the envelope of the pulses output by the sound drive signal at different times. in: The sound power source is also electrically connected to the control unit, and is used to, under the control of the control unit, modulate the target audio signal based on the high-frequency signal to generate the high-frequency carrier signal as the sound driving signal, wherein the period of the sound driving signal is the same as the period of the high-frequency signal, and the amplitudes of the positive pulses and negative pulses of the sound driving signal in any period are not equal.

6. The sound simulating device according to claim 5, characterized in that: The control unit sets an open position at a positive pulse or negative pulse phase corresponding to a corresponding period in the sound driving signal based on the positive or negative state of the target audio signal at different times, and generates the micro switch driving signal based on the open position corresponding to different times.

7. The sound simulating device according to claim 5, characterized in that: The number of the sound-emitting parts is greater than one, wherein the sound-emitting parts are arranged in parallel.

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