Simulation sound production method and simulation sound production device

Abstract

The invention provides a simulation sound production method and a simulation sound production device, and the simulation sound production method comprises the steps: providing a sound production driving signal which is a high-frequency carrier signal; obtaining a target audio signal, and generating a micro-switch driving signal based on the positive and negative of the target audio signal at different moments; and controlling the micro switch to be turned on at different moments through the micro switch driving signal, and outputting a positive pulse or a negative pulse of a corresponding period in the sound production driving signal, thereby realizing demodulation of a target audio signal. According to the simulation sound production method and the simulation sound production device provided by the invention, the problems that the audio frequency band of the existing simulation micro loudspeaker cannot be fully covered and the sound production volume is low are solved, and the effects of full-band high-fidelity and high-sound-pressure sound production are 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] An analog micro speaker is a small audio output device that mainly realizes audio output through analog sound generation technology. Existing analog micro speakers are difficult to cover the entire audio frequency band under the premise of controlling the volume of the micro speaker, and cannot produce high-fidelity sound with a sufficiently high sound pressure level. Therefore, how to achieve full coverage of the audio frequency band of the micro speaker and high sound pressure sound generation is a technical problem that technicians in this field are eager to solve.

[0003] It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solutions of the present invention and for the convenience of understanding by those skilled in the art. It cannot be considered that the above technical solutions are well known to those skilled in the art simply because these solutions are described in the background technology section of the present invention. Summary of the invention

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

[0005] To achieve the above-mentioned object and other related objects, the present invention provides a method for simulating sound generation, 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 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.

[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 driving signal includes: based on the positive or negative of the target audio signal at different times, setting an opening position at the positive pulse or negative pulse phase of the corresponding period in the sound driving signal, and generating the micro-switch driving signal based on the opening 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 times 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, the 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 micro switch;

[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 arranged 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 opening position at a positive pulse or negative pulse phase of 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 opening 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 micro switch, 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 in an embodiment of the present invention.

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

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

[0026] Figure 4 Shown is a waveform diagram of related 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 It is a schematic diagram showing the adjustment of the volume of the 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 Vocal Part

[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, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways 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 only used to illustrate the basic concept of the present invention in a schematic manner, and the illustrations only show components related to the present invention rather than being 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 complicated.

[0039] like Figure 1 As shown, this embodiment provides a simulated sound device 100, including a control unit 110 and a sound unit 120; wherein the sound unit 120 includes a chamber 121, a sound power source 122 and a micro switch 123. In practical applications, the chamber 121, the sound power source 122 and the micro switch 123 can be an integrated structure or a combined structure, which is not limited.

[0040] The control unit 110 generates a micro switch driving signal based on the positive or negative of the target audio signal at different times. Specifically, the control unit 110 sets an open position at a positive pulse or negative pulse phase of a corresponding period in the sound driving signal based on the positive or negative of the target audio signal at different times, and generates a micro switch driving signal based on the open position corresponding to 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 modulate the target audio signal based on the high-frequency signal under the control of the control unit 110 to generate a high-frequency carrier signal as a 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 moving coil sounder. Of course, the sound power source 122 may also include other forms of sound generating devices, which are not limited to this.

[0043] The micro switch 123 is disposed on the other side of the chamber 121, for example, the micro switch 123 is disposed on the upper side of the chamber 121; the micro switch 123 is electrically connected to the control unit 110, and the micro switch 123 is controlled to be turned on at different times by the micro switch driving signal, so as to output the positive pulse or negative pulse of the corresponding period in the sound driving signal, so as to realize the demodulation of the target audio signal. The micro switch 123 is switched on and off based on the micro switch driving signal, for example, when the micro switch driving signal is at a high level, the micro switch 123 is turned on, and when the micro switch driving signal is at a low level, the micro switch 123 is turned off.

[0044] In the simulated sound 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 the number of the sound generating parts 120 is multiple, each sound generating part 120 is arranged in parallel, such as Figure 2 As shown; a plurality of sound generating parts 120 are designed in the analog sound generating device 100, and the volume of the target audio signal can be adjusted by controlling the number of micro switches 123 corresponding to each sound generating part 120 being turned on.

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

[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: acquiring 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 pulse and the negative pulse in any period are not equal, 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, obtaining the target audio signal, and generating a micro switch driving signal based on the positive and negative values ​​of the target audio signal at different times. Specifically, the method for generating the micro switch driving signal includes: setting an open position at a positive pulse or negative pulse phase of a corresponding period in the sound driving signal based on the positive and negative values ​​of the target audio signal at different times, and generating a micro switch driving signal based on the open positions corresponding to 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 opening position is set at the positive pulse phase of the first cycle to the fifth cycle, and the opening 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 opening 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, corresponding to the sound driving signal, the opening position is set at the positive pulse phase of the first cycle to the tenth cycle. In this way, the micro switch driving signal is obtained based on the opening 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, corresponding to the sound driving signal, the opening position is set at the negative pulse phase of the first cycle to the tenth cycle. In this way, the micro switch driving signal is obtained based on the opening position corresponding to different moments. Figure 6 It should be noted that Figures 4 to 6 In order to clearly illustrate the micro-switch driving signal, its open position does not correspond to the corresponding pulse of the corresponding period of the sound driving signal. However, combined with the above description, technical personnel in this field should understand that each open position of the micro-switch driving signal actually corresponds to the corresponding pulse of the corresponding period in the sound driving signal. Only in this way can the corresponding pulse of the corresponding period be output based on the opened micro-switch.

[0048] Step S3, the micro switch 123 is controlled to be turned on 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 in the sound drive signal are output, and the negative pulses of the sixth to tenth cycles in 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 each output pulse, which can be referred to 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 each output pulse, which can be referred to Figure 6 Specifically, the demodulation method of 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 sounding method of this embodiment, if the target audio signal is positive at a certain moment, the microswitch is controlled by the microswitch driving signal to open at the positive pulse phase of the corresponding cycle in the sounding driving signal, and at the same time, the microswitch is controlled to close at the negative pulse phase of the corresponding cycle in the sounding driving signal; if the target audio signal is negative at a certain moment, the microswitch is controlled by the microswitch driving signal to open at the negative pulse phase of the corresponding cycle in the sounding driving signal, and at the same time, the microswitch is controlled to close at the positive pulse phase of the corresponding cycle in the sounding driving signal; in this way, the demodulation of the target audio signal at different moments is realized, and the audio reconstruction is completed. By demodulating 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 the positive and negative pulses cancel each other out. Therefore, the target audio signal finally demodulated 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 realizing full-band (20Hz~20000Hz) sounding.

[0050] In addition, the simulated sound generation method of this embodiment also includes a step of adjusting the volume, so as 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 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 finally 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 waveform of the relevant signal in the process of volume adjustment is shown, wherein the dotted lines correspond to the signals before adjustment, and the solid lines correspond to the signals after adjustment. In another example, the volume of the target audio signal is adjusted by adjusting the number of micro switches turned on; in specific implementation, multiple sounding parts are designed in an analog sounding device, and the volume of the target audio signal is adjusted by controlling the number of micro switches turned on corresponding to each sounding part. For example, if five sounding parts are designed in an analog sounding device, there are five corresponding micro switches. If two micro switches are turned on at the same time, the volume of the target audio signal is twice the original volume. If five micro switches are turned on at the same time, the volume of the target audio signal is five times the original volume.

[0051] In summary, 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 micro switch, 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; and 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 under the premise of ensuring the small size of the simulated sound generation device. Therefore, the present invention effectively overcomes various shortcomings in the prior art and has a high industrial utilization 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 familiar with 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 a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A method for simulating sound generation, 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 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.

2. The method for simulating sound generation according to claim 1, characterized in that: 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.

3. The method for simulating sound generation according to claim 2, characterized in that: The volume of the target audio signal is adjusted by adjusting the amplitude of the high-frequency signal.

4. The method for simulating sound generation according to any one of claims 1 to 3, characterized in that: The method for generating the micro switch driving signal includes: setting an opening 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 generating the micro switch driving signal based on the opening positions corresponding to different times.

5. The method for simulating sound generation according to claim 1, characterized in that: The demodulation method of the target audio signal includes: demodulating the target audio signal based on the envelope of the pulses outputted by the sound driving signal at different times.

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

7. 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 micro switch; 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 arranged 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 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.

8. The simulated sound device according to claim 7, characterized in that: 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.

9. The simulated sound device according to claim 7 or 8, characterized in that: The control unit sets an opening position at a positive pulse or negative pulse phase of 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 opening position corresponding to different times.

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

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