CN112312276A - Sound adjusting method and sound adjusting device - Google Patents
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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Abstract
The invention discloses a sound adjusting method and a sound adjusting device, wherein the sound adjusting method comprises the following steps: receiving a sound adjusting instruction; receiving a right channel audio and a left channel audio; selecting a corresponding adjusting mode according to the sound adjusting instruction, and processing the right channel audio and the left channel audio according to the adjusting mode to generate a right channel first audio and a left channel first audio, wherein different adjusting modes have different intensity adjusting degrees; generating a difference between the frequency of the right channel first audio and the frequency of the left channel first audio to generate a right channel second audio and a left channel second audio respectively; and outputting the right channel second audio and the left channel second audio.
Description
Technical Field
The present invention relates to a sound adjusting method and a sound adjusting apparatus, and more particularly, to a sound adjusting method and a sound adjusting apparatus that can adjust and output a sound that can generate a binaural beat sound by adjusting an input stereo audio.
Background
In 1839, german psychologist h.w.dove first found the binaural beat tone effect, that is, when human ears receive sounds close to each other but with different frequencies, the sound waves are integrated in the brain to generate a third sound (called binaural beat tone) with the difference in the sound frequencies of the two ears. For example, when the left and right ears receive 124 and 114 hertz (Hz) sound waves simultaneously, the brain will produce a 10 Hz beat tone.
According to the research of brain science, the human brain has different brain wave frequencies under different emotions or states, and the common brain wave types include delta wave (about 0.5-3 Hz), theta wave (about 3-8 Hz), alpha wave (about 8-12 Hz), beta wave (about 12-38 Hz), and gamma wave (about 38-100 Hz). Many studies have been made to induce the brain to generate corresponding brain waves if the frequency difference of the binaural beat tones falls within the frequency range of a specific brain wave, and the technique proposed in US5,135,468 is an application of the study.
Therefore, when people listen to music, if the sound output can be adjusted to output the sound capable of generating the beat sound of two ears, people can induce the brain of people to generate specific brain wave frequency while listening to the music, and further adjust the physical and mental states of people. However, although the prior art mentions how to produce the frequency difference of the binaural beat tones, the user cannot adjust the intensity of the generated binaural beat tones.
Disclosure of Invention
The present invention is directed to a sound adjusting method for adjusting and outputting a sound capable of generating a binaural beat sound according to a user's requirement.
Another objective of the present invention is to provide a sound adjusting apparatus for performing the above method.
To achieve the above object, the sound adjusting method of the present invention comprises the following steps: receiving a sound adjusting instruction; receiving a right channel audio and a left channel audio, wherein the right channel audio is different from the left channel audio; selecting a corresponding adjusting mode according to the sound adjusting instruction, and processing the right channel audio and the left channel audio according to the adjusting mode to generate a right channel first audio and a left channel first audio, wherein different adjusting modes have different intensity adjusting degrees; the stronger the intensity adjustment degree of the adjustment mode, the more approximate the right channel first audio is to the left channel first audio; the weaker the intensity adjustment degree of the adjustment mode, the less approximate the right channel first audio is to the left channel first audio; shifting the right channel first audio frequency by X Hz to generate a right channel second audio frequency, and shifting the left channel first audio frequency by Y Hz to generate a left channel second audio frequency, wherein | X-Y | is more than or equal to 0.5 and less than or equal to 100; and outputting the right channel second audio and the left channel second audio.
The sound adjusting device comprises an instruction receiving end, an audio input end, a signal processing module, a frequency adjusting module and an audio output end. The instruction receiving end receives the voice adjustment instruction. The audio input end receives a right channel audio and a left channel audio, and the right channel audio is different from the left channel audio. The signal processing module is coupled with the instruction receiving end and the audio input end. The signal processing module selects a corresponding adjusting mode according to the sound adjusting instruction, and processes the right channel audio and the left channel audio according to the adjusting mode to generate a right channel first audio and a left channel first audio, wherein different adjusting modes have different intensity adjusting degrees; the stronger the intensity adjustment degree of the adjustment mode, the more approximate the right channel first audio is to the left channel first audio; the weaker the intensity adjustment level of the adjustment mode, the less similar the right channel first audio is to the left channel first audio. The frequency adjusting module shifts the first audio frequency of the right channel by X Hz to generate a second audio frequency of the right channel, and shifts the first audio frequency of the left channel by Y Hz to generate a second audio frequency of the left channel, wherein | X-Y | is more than or equal to 0.5 and less than or equal to 100. The audio output end is coupled with the frequency adjusting module and outputs a right channel second audio and a left channel second audio.
Drawings
Fig. 1 is a device architecture diagram of an embodiment of a sound adjusting device according to the present invention.
Fig. 2 shows that the right channel audio and the left channel audio are respectively processed into different right channel first audio and left channel first audio according to different adjustment modes.
FIG. 3 is a flowchart illustrating steps of a sound adjustment method according to an embodiment of the present invention.
Wherein, the reference numbers:
Right channel audio R
Right channel first audio R1
Right channel second audio R2
Left channel audio L
Left channel first audio L1
Left channel second audio L2
Detailed Description
In order to better understand the technical content of the present invention, preferred embodiments are specifically illustrated as follows.
Please refer to fig. 1 and fig. 2 first. FIG. 1 is a diagram of an apparatus architecture of an embodiment of a sound adjusting apparatus according to the present invention; fig. 2 shows that the right channel audio and the left channel audio are respectively processed into different right channel first audio and left channel first audio according to different adjustment modes.
As shown in fig. 1, in an embodiment of the present invention, the sound adjusting apparatus 1 is used for adjusting the right channel audio R and the left channel audio L input by the sound generating apparatus 100, and outputting the adjusted and generated right channel second audio R2 and left channel second audio L2 to the speaker apparatus 200 for playing. In an embodiment, the sound generating device 100 can be a device such as a stereo, a television, or a mobile phone that generates audio, the source of the generated audio can include, but is not limited to, a network, a storable medium, or a microphone (not shown), and the speaker device 200 can be a headset or a speaker, but the invention is not limited to the above-mentioned devices. In addition, in the embodiment, the sound adjusting device 1 can be a microprocessor chip disposed on the sound generating device 100 and connected to the speaker device 200 in a wired or wireless manner for communication, but the invention is not limited thereto. In other embodiments, the sound adjusting apparatus 1 may also be disposed on the speaker apparatus 200 and connected to the sound generating apparatus 100 in a wired or wireless manner for communication.
As shown in fig. 1, in an embodiment of the present invention, a sound adjusting apparatus 1 includes a command receiving end 10, an audio input end 20, a signal processing module 30, a frequency adjusting module 40, and an audio output end 50.
In an embodiment of the present invention, the command receiver 10 is configured to receive a voice adjustment command 90. In the embodiment, the voice adjustment instruction 90 is input by a user through an input interface (not shown) provided by the operation of the voice adjustment apparatus 1; for example, the sound adjusting apparatus 1 may display a virtual key through a screen (not shown), so that the user can click the virtual key to adjust the sound adjusting instruction 90, but the input interface is not limited to the virtual key, the input interface may also be a physical key or other user interface, and the sound adjusting instruction 90 according to the present invention is not limited to be generated by user input.
In an embodiment of the present invention, the audio input terminal 20 is connected to the sound generating apparatus 100 for communication to obtain a right channel audio R and a left channel audio L generated by the sound generating apparatus 100, wherein the right channel audio R is different from the left channel audio L.
In an embodiment of the present invention, the signal processing module 30 is coupled to the command receiving terminal 10 and the audio input terminal 20. The signal processing module 30 is configured to select a corresponding adjustment mode according to the sound adjustment instruction 90, and process the right channel audio R and the left channel audio L according to the adjustment mode to generate a right channel first audio R1 and a left channel first audio L1, respectively, where different adjustment modes have different intensity adjustment degrees. For example, the input interface may display a plurality of virtual keys, and a user may click on different virtual keys to input different sound adjustment commands 90, where different sound adjustment commands 90 correspond to different adjustment modes. The signal processing module 30 can select an adjustment mode for processing audio according to the sound adjustment command 90 received by the command receiving terminal 10.
As shown in fig. 2, in the embodiment of the present invention, the adjustment modes built in the sound adjusting apparatus 1 include six different adjustment modes, i.e., modes 1 to 6, and the intensity adjustment degrees of the modes 1 to 6 are sequentially increased from small to large. The larger the intensity adjustment degree is, the lower the proportion of the original audio content is kept, and the higher the proportion of the original audio content is kept. In the embodiment of the present invention, the right channel first audio R1 is generated by adjusting the formula R1-mL + nR, where n + m is 1, and 0.5 ≦ n ≦ 1, 0 ≦ m ≦ 0.5, R1 represents the right channel first audio R1, L represents the left channel audio L, and R represents the right channel audio R. The left channel first audio L1 is adjusted according to the formula L1 ═ nL + mR, where n + m is 1, and 0.5 ≦ n ≦ 1, 0 ≦ m ≦ 0.5, L1 represents the left channel first audio L1, L represents the left channel audio L, and R represents the right channel audio R.
As shown in fig. 2, when the mode 1 is selected, the parameters n and m are equal to 1 and 0, so that the right channel first audio R1 is equivalent to the right channel audio R, and the left channel first audio L1 is equivalent to the left channel audio L. When mode 2 is selected, the parameter n is 0.9 and m is 0.1, so the right channel first audio R1 would consist of 90% of the right channel audio R plus 10% of the left channel audio L, and the left channel first audio L1 would consist of 10% of the right channel audio R plus 90% of the left channel audio L. When mode 3 is selected, the parameters n is 0.8 and m is 0.2, so the right channel first audio R1 would consist of 80% of the right channel audio R plus 20% of the left channel audio L, and the left channel first audio L1 would consist of 20% of the right channel audio R plus 80% of the left channel audio L. When mode 4 is selected, the parameters n and m are 0.7 and 0.3, respectively, so that the right channel first audio R1 would consist of 70% of the right channel audio R plus 30% of the left channel audio L, and the left channel first audio L1 would consist of 30% of the right channel audio R plus 70% of the left channel audio L. When mode 5 is selected, the parameters n and m are 0.6 and 0.4, respectively, so that the right channel first audio R1 would consist of 60% of the right channel audio R plus 40% of the left channel audio L, and the left channel first audio L1 would consist of 40% of the right channel audio R plus 60% of the left channel audio L. When mode 6 is selected, the parameters n and m are 0.5 and 0.5, respectively, so that the right channel first audio R1 would consist of 50% of the right channel audio R plus 50% of the left channel audio L, and the left channel first audio L1 would consist of 50% of the right channel audio R plus 50% of the left channel audio L.
As can be seen from the above description, the stronger the intensity adjustment of the adjustment mode selected by the signal processing module 30, the more similar the right channel first audio R1 and the left channel first audio L1 are. The weaker the degree of intensity adjustment the adjustment mode selected by the signal processing module 30 has, the less approximate the right channel first audio R1 is to the left channel first audio L1. When the adjustment mode has the strongest degree of intensity adjustment (i.e., mode 6), the right channel first audio R1 is the average mixed right channel audio R and left channel audio L, and the left channel first audio L1 is also the average mixed right channel audio R and left channel audio L, so that the right channel first audio R1 is the same as the left channel first audio L1. When the adjustment mode has the weakest degree of intensity adjustment (i.e., mode 1), the right channel first audio R1 is equal to the right channel audio R, and the left channel first audio L1 is equal to the left channel audio L, when the right channel first audio R1 is the most different from the left channel first audio L1.
In one embodiment of the invention, the frequency adjustment module 40 is used to shift the right channel first audio R1 by X Hz to generate a right channel second audio R2 and to shift the left channel first audio R1 by Y Hz to generate a left channel second audio L2, wherein 0.5 ≦ X-Y ≦ 100 Hz. In an embodiment of the invention, the frequency adjustment module 40 shifts the right channel first audio R1 by 5 hz (i.e. up-shift by 5 hz, X equals to 5) to generate the right channel second audio R2, and shifts the left channel first audio R1 by-5 hz (i.e. down-shift by 5 hz, Y equals to-5) to generate the left channel second audio L2, but the invention is not limited thereto. Therefore, the sound content of the right channel second audio R2 and the sound content of the left channel second audio L2 are close to each other, and then have a frequency difference of 10 hz after frequency shift processing.
For example, when the signal processing module 30 selects the adjustment mode of mode 6 according to the sound adjustment command 90 input by the user, the sound contents of the right channel first audio R1 and the left channel first audio L1 generated by processing the right channel audio R and the left channel audio L according to mode 6 are identical. When the right channel first audio R1 and the left channel first audio L1 with the same sound content are subjected to the frequency shift processing, the binaural beat sound with the most powerful binaural beat effect can be generated.
In an embodiment of the present invention, the audio output 50 is coupled to the frequency adjustment module 40 and is connected to the speaker device 200 in a wired or wireless communication manner. The audio output terminal 50 is used for outputting a right channel second audio R2 and a left channel second audio L2.
It should be noted that the signal processing module 30 or the frequency adjusting module 40 can be configured as a hardware device, a software program, a firmware, or a combination thereof, and can also be configured by a circuit loop or other suitable types; further, the respective modules may be arranged in a single type or in a combined type. In a preferred embodiment, both modules are software programs stored in a storage unit (not shown) of the microprocessor, and the two modules are executed by a processing unit (not shown) of the microprocessor to achieve the functions of the present invention. In addition, the present embodiment only illustrates the preferred embodiments of the present invention, and all possible combinations and modifications are not described in detail to avoid redundancy. However, one of ordinary skill in the art should appreciate that each of the above modules or elements is not necessarily required. And that other, more detailed, existing modules or elements may be included to practice the invention. Each module or component may be omitted or modified as desired, and no other module or component may necessarily exist between any two modules.
Next, please refer to fig. 1 to fig. 3 together, wherein fig. 3 is a flowchart illustrating steps of an embodiment of a sound adjusting method according to the present invention, and the steps illustrated in fig. 3 will be described below with reference to fig. 1 and fig. 2. It should be noted that, although the sound adjusting method of the present invention is described below by taking the sound adjusting apparatus 1 as an example, the sound adjusting method of the present invention is not limited to the use of the sound adjusting apparatus 1 having the same configuration as described above.
Step S1 is performed: a voice adjustment command 90 is received.
In the embodiment of the present invention, the user can input the voice adjustment command 90 into the voice adjustment apparatus 1 by operating the input interface provided in the voice adjustment apparatus 1. The command receiving end 10 receives the sound adjustment command 90.
Step S2 is performed: a right channel audio R and a left channel audio L are received.
In the embodiment of the present invention, the audio input terminal 20 is connected to the sound generating apparatus 100 by a wired or wireless signal to obtain the right channel audio R and the left channel audio L generated by the sound generating apparatus 100. Generally, the left and right channel sounds of the stereo sound are not identical, and therefore, the right channel audio R is not identical to the left channel audio L.
Step S3 is performed: the corresponding adjusting mode is selected according to the sound adjusting instruction, and the right channel audio R and the left channel audio L are processed according to the adjusting mode to generate a right channel first audio R1 and a left channel first audio L1.
When the command receiver 10 receives the sound adjusting command 90, the signal processing module 30 selects a corresponding adjusting mode according to the sound adjusting command 90, and after the audio input terminal 20 obtains the right channel audio R and the left channel audio L, processes the right channel audio R and the left channel audio L according to the adjusting mode to generate a right channel first audio R1 and a left channel first audio L1. In the embodiment of the present invention, six adjustment modes, i.e., the mode 1 to the mode 6 shown in fig. 2, are built in the sound adjusting apparatus 1, and different adjustment modes have different intensity adjustment degrees. Since the details of how the signal processing module 30 processes the left and right channels of the first audio R1 and the left channel of the first audio L1 according to different adjustment modes are described above, the detailed description thereof is not repeated herein.
Step S4 is performed: the right channel first audio R1 is shifted by X hertz to produce a right channel second audio R2 and the left channel first audio L1 is shifted by Y hertz to produce a left channel second audio L2 wherein 0.5 ≦ X-Y ≦ 100.
In one embodiment of the present invention, once the right channel first audio R1 and the left channel first audio L1 are obtained, the frequency adjustment module 40 then shifts the right channel first audio R1 by X Hz to generate the right channel second audio R2 and shifts the left channel first audio R1 by Y Hz to generate the left channel second audio L2, wherein 0.5 ≦ X-Y ≦ 100. For example, the right channel first audio R1 may be shifted by 10 hz (i.e., up-shifted by 10 hz), i.e., X ═ 10, Y ═ 0; it is also possible to shift the left channel first audio R1 by 10 hz (i.e. up to 10 hz), i.e. X ═ 0, Y ═ 10; it is also possible to shift the right channel first audio R1 by 5 hz (i.e., up by 5 hz) and simultaneously shift the left channel first audio R1 by-5 hz (i.e., down by 5 hz), i.e., X ═ 5, Y ═ 5, and then | X | ═ Y |. Therefore, after obtaining the right channel first audio R1 and the left channel first audio L1, the frequency adjustment module 40 simultaneously or alternatively adjusts the frequencies of the right channel first audio R1 and the left channel first audio L.
Finally, step 5 is performed: and outputting the right channel second audio and the left channel second audio.
After the step S4 is completed, the audio output terminal 50 outputs the right channel second audio R2 and the left channel second audio L2 to the speaker device 200 for playing.
It should be noted that the order of the steps of the sound adjusting method of the present invention is not limited by the above description.
As can be seen from the foregoing description of the embodiments, the sound adjusting method disclosed in the present invention can process the input right channel audio R and left channel audio L according to the sound adjusting instruction input by the user, so as to adjust and output the sound of binaural beat tones capable of generating different intensity effects.
Although the present invention has been described with reference to the above embodiments, it should be understood that various changes and modifications can be made without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (12)
1. A method for adjusting sound, comprising the steps of:
receiving a sound adjusting instruction;
receiving a right channel audio and a left channel audio, wherein the right channel audio is different from the left channel audio;
selecting a corresponding adjusting mode according to the sound adjusting instruction, and processing the right channel audio and the left channel audio according to the adjusting mode to generate a right channel first audio and a left channel first audio, wherein different adjusting modes have different intensity adjusting degrees; the stronger the intensity adjustment degree of the adjustment mode, the more approximate the right channel first audio and the left channel first audio; the weaker the intensity adjustment degree of the adjustment mode, the less approximate the right channel first audio is to the left channel first audio;
shifting the right channel first audio frequency by X Hz to generate a right channel second audio frequency, and shifting the left channel first audio frequency by Y Hz to generate a left channel second audio frequency, wherein | X-Y | is more than or equal to 0.5 and less than or equal to 100; and
and outputting the right channel second audio and the left channel second audio.
2. The method of claim 1, wherein when the adjustment mode has the strongest degree of intensity adjustment, the right channel first audio is an average mixture of the right channel audio and the left channel audio, and the left channel first audio is an average mixture of the right channel audio and the left channel audio.
3. The method of claim 1, wherein the right channel first audio equals the right channel audio and the left channel first audio equals the left channel audio when the adjustment mode has the weakest intensity adjustment degree.
4. The sound adjustment method according to claim 1, wherein | X | ═ Y |.
5. The sound adjustment method according to claim 1, wherein X ≠ 0 and Y ≠ 0.
6. The sound adjustment method according to claim 1, wherein X ≠ 0, and Y ≠ 0.
7. A sound adjustment device, comprising:
an instruction receiving end for receiving a voice adjustment instruction;
the audio input end receives a right channel audio and a left channel audio, and the right channel audio is different from the left channel audio;
a signal processing module, coupled to the command receiving terminal and the audio input terminal, for selecting a corresponding adjustment mode according to the sound adjustment command, and processing the right channel audio and the left channel audio according to the adjustment mode to generate a right channel first audio and a left channel first audio, wherein different adjustment modes have different intensity adjustment degrees; the stronger the intensity adjustment degree of the adjustment mode, the more approximate the right channel first audio and the left channel first audio; the weaker the intensity adjustment degree of the adjustment mode, the less approximate the right channel first audio is to the left channel first audio;
a frequency adjusting module, which shifts the first audio frequency of the right channel by X Hz to generate a second audio frequency of the right channel, and shifts the first audio frequency of the left channel by Y Hz to generate a second audio frequency of the left channel, wherein | X-Y | is more than or equal to 0.5 and less than or equal to 100; and
and the audio output end is coupled with the frequency adjusting module and outputs the right channel second audio and the left channel second audio.
8. The apparatus of claim 7, wherein when the adjustment mode has the strongest degree of intensity adjustment, the right channel first audio is an average mixture of the right channel audio and the left channel audio, and the left channel first audio is an average mixture of the right channel audio and the left channel audio.
9. The apparatus of claim 7, wherein the right channel first audio equals the right channel audio and the left channel first audio equals the left channel audio when the adjustment mode has the weakest intensity adjustment degree.
10. The sound adjusting apparatus according to claim 7, wherein | X | ═ Y |.
11. The sound adjusting apparatus according to claim 7, wherein X ≠ 0 and Y ≠ 0.
12. The sound adjusting apparatus according to claim 7, wherein X ≠ 0, and Y ≠ 0.
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