CN114501235A - Method for improving sound quality of sound equipment, storage medium and sound equipment - Google Patents
Method for improving sound quality of sound equipment, storage medium and sound equipment Download PDFInfo
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- CN114501235A CN114501235A CN202111629110.0A CN202111629110A CN114501235A CN 114501235 A CN114501235 A CN 114501235A CN 202111629110 A CN202111629110 A CN 202111629110A CN 114501235 A CN114501235 A CN 114501235A
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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
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/04—Circuits for transducers, loudspeakers or microphones for correcting frequency response
Abstract
The invention discloses a method for improving the sound quality of a sound, which comprises the following steps: copying the acquired original audio signal; then, the copied audio signal is intercepted to obtain a partial frequency band signal, then the partial frequency band signal is subjected to delay processing or gain processing and then is subjected to sound mixing processing with the original audio signal to obtain a new audio signal, so that the tone quality of the whole audio signal is improved, and meanwhile, the problem that partial audio distortion is caused by EQ processing on the whole audio signal in the prior art can be avoided. The invention also discloses a storage medium and a sound box.
Description
Technical Field
The present invention relates to audio devices, and more particularly, to a method for improving sound quality of an audio device, a storage medium, and an audio device.
Background
In recent years, as the size of a sound system is getting smaller, in order to compensate for the sound quality effect of the small-size sound system, the EQ is generally used to increase the intensity of a sound signal and improve the sound quality effect. However, for some high frequency signals, the sound quality of the sound is distorted due to the intensity enhancement due to the EQ.
Disclosure of Invention
In order to overcome the disadvantages of the prior art, an object of the present invention is to provide a method for improving sound quality of a sound, which can solve the problem of distorted sound quality when improving sound quality of an existing sound.
Another object of the present invention is to provide a storage medium that can solve the problem of distortion of sound quality when improving sound quality of existing audio.
The invention further aims to provide a sound box, which can solve the problem that the sound quality of the existing sound box is distorted when the sound quality is improved.
One of the purposes of the invention is realized by adopting the following technical scheme:
a method of enhancing acoustic quality, the method comprising:
a copying step: acquiring an original audio signal, copying the original audio signal, and recording an audio signal generated by copying as a first audio signal;
intercepting: intercepting the first audio signal according to a preset rule to obtain a partial frequency band signal of the first audio signal;
the processing steps are as follows: carrying out delay processing or gain processing on the intercepted partial frequency band signals;
a sound mixing step: and mixing the processed partial frequency band signal with the original audio signal to obtain a new audio signal.
Further, the intercepting step specifically includes: and intercepting the first audio signal according to a preset rule to obtain a frequency band signal with the frequency lower than a preset value.
Further, the intercepting step specifically includes: and filtering the first audio signal through a filter to filter out a part of the first audio signal with the frequency higher than a preset value, and reserving a frequency band signal with the frequency lower than the preset value as a part of the frequency band signal of the first audio signal obtained by interception.
Further, the preset value is 500 HZ.
The second purpose of the invention is realized by adopting the following technical scheme:
a storage medium which is a computer-readable storage medium having stored thereon a computer program, the computer program being a program for enhancing sound quality of sound, the program for enhancing sound quality of sound realizing the following steps when executed by a processor:
a copying step: acquiring an original audio signal, copying the original audio signal, and recording an audio signal generated by copying as a first audio signal;
intercepting: intercepting the first audio signal according to a preset rule to obtain a partial frequency band signal of the first audio signal;
the processing steps are as follows: carrying out delay processing or gain processing on the intercepted partial frequency band signals;
a sound mixing step: and mixing the processed partial frequency band signal with the original audio signal to obtain a new audio signal.
Further, the intercepting step specifically includes: and intercepting the first audio signal according to a preset rule to obtain a frequency band signal with the frequency lower than a preset value.
Further, the intercepting step specifically includes: and filtering the first audio signal through a filter to filter out a part of the first audio signal with the frequency higher than a preset value, and reserving a frequency band signal with the frequency lower than the preset value as a part of the frequency band signal of the first audio signal obtained by interception.
Further, the preset value is 500 HZ.
The third purpose of the invention is realized by adopting the following technical scheme:
a sound box comprises an MCU module, a power amplifier module and a loudspeaker; the MCU module is used for receiving an audio signal to be processed, processing the audio signal to be processed according to the method for improving the sound quality adopted by one of the purposes of the invention to generate a new audio signal, and sending the new audio signal to the power amplification module for power amplification and then sending the new audio signal to the loudspeaker for playing.
The MCU module is connected with external equipment through the Bluetooth module and is used for receiving an original audio signal sent by the external equipment or receiving a configuration instruction sent by the external equipment to realize the configuration of the sound equipment.
Compared with the prior art, the invention has the beneficial effects that:
the invention filters the high frequency in the audio signal so as to perform delay processing or gain processing on part of frequency bands in the original audio signal independently, and then performs sound mixing processing on the high frequency and the original audio signal to obtain a new audio signal, thereby avoiding the problem of sound quality distortion of the audio signal with higher frequency when EQ processing is performed on the audio signal in the prior art.
Drawings
Fig. 1 is a flow chart of a method for improving sound quality of a sound system according to the present invention;
fig. 2 is a schematic diagram of the auditory sensation of an audio signal processed by the method for improving the acoustic quality according to the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
Example one
The present invention provides a preferred embodiment, a method for improving sound quality of sound, as shown in fig. 1, comprising the following steps:
step S1, acquiring and copying the original audio signal, and recording the audio signal generated by copying as the first audio signal.
Since the original audio signal received by the acoustic device includes a frequency band of low frequencies and a frequency band of high frequencies. When EQ processing is performed on a high-frequency band in the conventional manner, sound quality distortion is likely to occur. Therefore, in this embodiment, the high-frequency band in the original audio signal needs to be removed first, so as to avoid the problem of audio distortion caused by performing EQ processing on the original audio signal. In addition, in order to guarantee the original audio signal, the present invention first forms a copy of the same audio signal by copying the original audio signal.
And step S2, intercepting the first audio signal according to a preset rule to obtain a partial frequency band signal of the first audio signal.
More specifically, the first audio signal is filtered through a filter, and the partial frequency band signal is filtered from the first audio signal to obtain the partial frequency band signal of the first audio signal.
More preferably, the filtered frequency band signal refers to a frequency band signal with a frequency higher than a preset value, and the frequency band signal with a frequency lower than the preset value is reserved. That is, the invention improves the tone quality by performing delay processing or gain processing on the frequency band signal of the low frequency; and the high-frequency band signals are not processed, so that tone quality distortion is avoided.
That is, the invention intercepts part of frequency band signals with frequency lower than a certain value, then carries out independent processing of improving tone quality, and finally carries out sound mixing with the frequency band signals with high frequency, thus avoiding the problem of tone quality distortion caused by processing the frequency band signals with high frequency. Preferably, the invention not only can adopt gain processing to the frequency band signal of low frequency, namely, the tone quality is improved by improving the power, but also can delay the frequency band signal of low frequency by delaying the frequency band signal of low frequency, so that when the frequency band signal of low frequency is mixed with the original audio signal, the frequency band signal of low frequency is equivalent to the superposition of two signals, thereby achieving the effect of improving the tone quality.
For example, the frequency band signals higher than 500HZ are filtered from the first audio signal, so as to reserve the frequency band signals lower than 500HZ, and perform sound quality improvement processing on the frequency band signals.
Preferably, the preset value in the embodiment is 500Hz to 20 KHz. That is, by filtering the 500Hz to 20KHz signals, signals below 500HZ are retained.
And step S3, performing tone quality improvement processing on the intercepted partial frequency band signal of the first audio signal. That is, by performing delay processing or gain processing on a partial frequency band signal of the first audio signal. . That is, the gain processing is to improve the sound quality of the audio signal by improving the signal strength of the frequency band signal of the low frequency; the delay processing means that a part of frequency band signals are delayed, so that a superimposed effect is formed after the signals are mixed with the original audio signals, and the tone quality of the audio signals is improved.
Step S4, mixing the partial frequency band signal after the sound quality improvement processing with the original audio signal to obtain a new audio signal.
The processed first audio signal is added into the original audio signal, and the audio signal and the original audio signal are subjected to audio mixing processing, so that the original signal intensity of a high-frequency band can be kept, and the problem of distortion is avoided; and to the signal intensity increase of the frequency channel of low frequency, improved tone quality, lead to the tone quality distortion problem of part frequency channel signal through carrying out EQ to whole audio signal among the solution prior art.
As shown in fig. 2, from the frequency response, the first half band of the audio signal with a frequency lower than a certain value is processed, so that the hearing sense of the audio signal is obviously increased; and for the frequency band signal of the second half section, no processing is carried out, so that the problem of tone quality distortion is avoided. The invention can improve the tone quality of the whole audio signal, improve the whole sound effect of the whole sound and avoid the problem of tone quality distortion of high-frequency band signals. Meanwhile, the invention can improve the tone quality and sound effect of the sound without any improvement on the hardware part of the sound.
Preferably, based on the first embodiment, the invention further provides another embodiment, which is a sound box, comprising an MCU module, a power amplifier module and a speaker.
The MCU module is used for receiving an original audio signal, processing the original audio signal according to the method for improving the sound quality provided by the embodiment to generate a new audio signal, sending the new audio signal to the power amplification module for power amplification processing, and sending the new audio signal to the loudspeaker for playing.
Because the invention only aims at the partial frequency band signals with the frequency lower than the preset value in the audio signals to carry out tone quality improvement processing, the problem of partial tone quality distortion caused by the gain processing of the whole audio signal by an equalizer in the prior art is avoided.
Preferably, the stereo further comprises a bluetooth module. The MCU module is in communication connection with the Bluetooth module and is used for data interaction with external equipment. For example, the method is connected to an external device, and receives an audio signal sent by the external device to play, or receives a configuration instruction sent by the external device, so as to implement configuration of a preset value, and the like.
EXAMPLE III
Based on the first embodiment provided by the present invention, the present invention further provides an embodiment, a storage medium, where the storage medium is a computer-readable storage medium, and a computer program is stored on the storage medium, where the computer program is a program for improving sound quality, and when executed by a processor, the program for improving sound quality realizes the following steps:
a copying step: acquiring an original audio signal, copying the original audio signal, and recording an audio signal generated by copying as a first audio signal;
intercepting: intercepting the first audio signal according to a preset rule to obtain a partial frequency band signal of the first audio signal;
the treatment steps are as follows: carrying out delay processing or gain processing on the intercepted partial frequency band signals;
a sound mixing step: and mixing the processed partial frequency band signal with the original audio signal to obtain a new audio signal.
Further, the intercepting step specifically includes: and intercepting the first audio signal according to a preset rule to obtain a frequency band signal with the frequency lower than a preset value.
Further, the intercepting step specifically includes: and filtering the first audio signal through a filter to filter out a part of the first audio signal with the frequency higher than a preset value, and reserving a frequency band signal with the frequency lower than the preset value as a part of the frequency band signal of the first audio signal obtained by interception.
Further, the preset value is 500 HZ.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (10)
1. A method of enhancing acoustic quality, the method comprising:
a copying step: acquiring an original audio signal, copying the original audio signal, and recording an audio signal generated by copying as a first audio signal;
intercepting: intercepting the first audio signal according to a preset rule to obtain a partial frequency band signal of the first audio signal;
the processing steps are as follows: carrying out delay processing or gain processing on the intercepted partial frequency band signals;
a sound mixing step: and mixing the processed partial frequency band signal with the original audio signal to obtain a new audio signal.
2. The method for improving sound quality of sound according to claim 1, wherein the intercepting step specifically comprises: and intercepting the first audio signal according to a preset rule to obtain a frequency band signal with the frequency lower than a preset value.
3. The method for improving acoustic quality according to claim 2, wherein the intercepting step specifically comprises: and filtering the first audio signal through a filter to filter out a part of the first audio signal with the frequency higher than a preset value, and reserving a frequency band signal with the frequency lower than the preset value as a part of the frequency band signal of the first audio signal obtained by interception.
4. The method for improving sound quality according to claim 2, wherein the predetermined value is 500 HZ.
5. A storage medium which is a computer-readable storage medium having stored thereon a computer program which is a program for enhancing sound quality, characterized in that the program for enhancing sound quality realizes, when executed by a processor, the steps of:
a copying step: acquiring an original audio signal, copying the original audio signal, and recording an audio signal generated by copying as a first audio signal;
intercepting: intercepting the first audio signal according to a preset rule to obtain a partial frequency band signal of the first audio signal;
the processing steps are as follows: carrying out delay processing or gain processing on the intercepted partial frequency band signals;
a sound mixing step: and mixing the processed partial frequency band signal with the original audio signal to obtain a new audio signal.
6. The storage medium of claim 5, wherein the intercepting step specifically comprises: and intercepting the first audio signal according to a preset rule to obtain a frequency band signal with the frequency lower than a preset value.
7. The storage medium of claim 6, wherein the intercepting step specifically comprises: and filtering the first audio signal through a filter to filter out a part of the first audio signal with the frequency higher than a preset value, and reserving a frequency band signal with the frequency lower than the preset value as a part of the frequency band signal of the first audio signal obtained by interception.
8. The storage medium of claim 6, wherein the preset value is 500 HZ.
9. A sound box is characterized by comprising an MCU module, a power amplifier module and a loudspeaker; the MCU module is configured to receive an audio signal to be processed, process the audio signal to be processed according to the method for improving sound quality of any one of claims 1 to 4 to generate a new audio signal, and send the new audio signal to the power amplifier module for power amplification and then to the speaker for playing.
10. The sound box according to claim 9, further comprising a bluetooth module, wherein the MCU module is connected to the external device through the bluetooth module, and is configured to receive an original audio signal sent by the external device or receive a configuration command sent by the external device to configure the sound box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111629110.0A CN114501235A (en) | 2021-12-28 | 2021-12-28 | Method for improving sound quality of sound equipment, storage medium and sound equipment |
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| CN202111629110.0A CN114501235A (en) | 2021-12-28 | 2021-12-28 | Method for improving sound quality of sound equipment, storage medium and sound equipment |
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| CN114501235A true CN114501235A (en) | 2022-05-13 |
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| CN202111629110.0A Pending CN114501235A (en) | 2021-12-28 | 2021-12-28 | Method for improving sound quality of sound equipment, storage medium and sound equipment |
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