CN112423189B - Audio parameter self-adaptive adjusting method and audio system - Google Patents
Audio parameter self-adaptive adjusting method and audio system Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/04—Circuits for transducers, loudspeakers or microphones for correcting frequency response
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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
- H04R2430/00—Signal processing covered by H04R, not provided for in its groups
- H04R2430/01—Aspects of volume control, not necessarily automatic, in sound systems
Abstract
The invention discloses an audio parameter self-adaptive adjusting method, which is applied to an audio system with a loudspeaker box, wherein the loudspeaker box is provided with a back cavity with a variable volume, and the method comprises the following steps: step S1, obtaining volume data of the back cavity; step S2, adjusting the audio configuration parameters of the audio system according to the acquired volume data, so that the audio configuration parameters are matched with the acquired volume; and step S3, processing the audio data according to the adjusted audio configuration parameters, and sounding the processed audio data through the loudspeaker box. The invention also discloses an audio system applying the audio parameter self-adaptive adjusting method. Compared with the related art, the audio parameter self-adaptive adjusting method and the audio system have good acoustic performance.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the field of electroacoustic conversion, in particular to an audio parameter self-adaptive adjusting method and an audio system applied to an electronic sound box product.
[ background of the invention ]
With the advent of the mobile internet age, the number of smart mobile devices is increasing. Among the mobile devices, the mobile phone is undoubtedly the most common and portable mobile terminal device. At present, the functions of a mobile phone are very diverse, one of which is a high-quality music function, and thus, a speaker box for playing sound is widely applied to the current smart mobile devices.
The loudspeaker box in the related art comprises a rear cavity with a variable volume, and the rear cavity of the loudspeaker box can be expanded, so that the acoustic performance of the loudspeaker box is flexible and changeable, and the loudspeaker box is suitable for various application scenes, and the user experience is good.
However, the back volume of the speaker box of the related art can be expanded, different audio parameter settings are required for different back volume, and if only fixed audio parameter settings are used, the quality of sound may be deteriorated and even irreversible damage to the speaker box may occur for some expanded back volume.
Therefore, there is a need to provide a new method and system to solve the above technical problems.
[ summary of the invention ]
The present invention is to overcome the above technical problems, and provide an audio parameter adaptive adjustment method and an audio system with good acoustic performance.
In order to achieve the above object, the present invention provides an adaptive audio parameter adjusting method applied to an audio system having a speaker box with a variable volume back cavity, the method comprising the steps of:
step S1, obtaining volume data of the back cavity;
step S2, adjusting the audio configuration parameters of the audio system according to the acquired volume data, so that the audio configuration parameters are matched with the acquired volume;
and step S3, processing the audio data according to the adjusted audio configuration parameters, and sounding the processed audio data through the loudspeaker box.
Preferably, in step S1, the speaker box includes a sensor, and the audio system obtains the volume data through the sensor.
Preferably, the sensor is a contact sensor or a non-contact sensor.
Preferably, the sensor is a potentiometer, and the volume of the rear cavity corresponds to the output data of the potentiometer one by one.
Preferably, the sensor is an infrared distance sensor, and the volume of the rear cavity corresponds to the output data of the infrared distance sensor one to one.
Preferably, the audio system further comprises a microphone and a processor electrically connected to the microphone,
before the step S1, the audio parameter adaptive adjustment method further includes the following steps:
step S01, before the loudspeaker box plays audio, playing test audio with fixed frequency and fixed sound amplitude;
the step S1 includes the following steps:
step S11, the microphone acquires the audio signal of the test audio played by the loudspeaker box and converts the audio signal into test audio data;
step S12, the processor calculates the volume data according to the acoustic parameters of the test audio data.
Preferably, the processor calculates the volume data according to the sound amplitude of the test audio data acquired by the microphone.
Preferably, the acoustic parameter is a sound pressure level of the test audio data.
The present invention also provides an audio system, which applies the audio parameter adaptive adjustment method as described in any one of the above items, and the audio system further includes:
the processor is used for receiving an audio input signal, processing the audio input signal to obtain audio data, adjusting the audio configuration parameters of the audio system according to the obtained volume data, and processing and outputting the audio data according to the adjusted audio configuration parameters;
and the amplifier is used for receiving the audio data output by the processor, carrying out signal amplification processing on the audio data and outputting the audio data to the loudspeaker box.
Preferably, the processor comprises:
the back cavity state parameter acquisition module is used for receiving the volume data;
the back cavity state judging module is used for comparing the received volume data with prestored volume data, and starting to update the audio configuration parameters if the two compared volume data are different;
the audio processing configuration storage unit is used for storing a plurality of audio configuration parameters, and the audio configuration parameters correspond to the volume data one by one;
the audio parameter configuration control module is used for carrying out pairing search on the audio configuration parameters stored in the audio processing configuration storage unit according to the received volume number and carrying out parameter configuration on the searched audio configuration parameters;
and the audio processing module is used for processing the received audio input signal according to the audio configuration parameters to obtain the audio data.
Compared with the prior art, the audio parameter self-adaptive adjusting method and the audio system comprise the following steps: step S1, obtaining volume data of the back cavity; step S2, adjusting the audio configuration parameters of the audio system according to the acquired volume data, so that the audio configuration parameters are matched with the acquired volume; and step S3, processing the audio data according to the adjusted audio configuration parameters, and sounding the processed audio data through the loudspeaker box. According to the method, the paired audio configuration parameters are obtained by automatically processing the volume data of the rear cavity, so that the acoustic performance of the sounding of the loudspeaker box is good.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
fig. 1 is a flowchart of a method for adaptively adjusting audio parameters according to a first embodiment of the present invention;
FIG. 2 is a schematic diagram of a sensor and a back cavity in an initial state according to a first embodiment of the invention;
FIG. 3 is a schematic diagram of a sensor and a rear cavity in an expanded state according to a first embodiment of the present invention;
fig. 4 is a flowchart of an adaptive audio parameter adjusting method according to a second embodiment of the present invention;
FIG. 5 is a schematic diagram of an audio system according to the present invention;
FIG. 6 is a schematic diagram of a processor of the audio system of the present invention;
FIG. 7 is a schematic diagram of an audio system according to a first embodiment of the present invention;
fig. 8 is a schematic structural diagram of an audio system according to a second embodiment of the present invention.
[ detailed description ] embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
(embodiment one)
Referring to fig. 1, the present invention provides an adaptive audio parameter adjusting method applied to an audio system having a speaker box with a back cavity with a variable volume.
The audio parameter self-adaptive adjusting method comprises the following steps:
and step S1, acquiring the volume data of the rear cavity.
The variable volume of the back volume may cause a volume change by a structural change of the back volume, thereby causing the acoustic performance of the loudspeaker enclosure to change. The back volume is used to improve the low frequency acoustic performance of the loudspeaker enclosure. Of course, without being limited thereto, it is also possible that the audio parameter adaptive adjustment method of the present invention is also applicable to a variable volume front cavity of the speaker box.
The loudspeaker enclosure includes a sensor through which the audio system obtains the volume data. In this embodiment, the sensor is installed in the rear cavity to sense and transmit the volume of the rear cavity. Of course, without being limited thereto, the sensor may be mounted outside the rear cavity, for example, an outer wall of the rear cavity or a housing of the speaker box may be provided without contacting a rear cavity component, and the sensor may detect the movement of the movable component of the rear cavity. Wherein the change in volume of the rear chamber is effected by movement of the movable member.
Specifically, the sensor is a contact sensor or a non-contact sensor.
The sensor is a potentiometer, and the volume of the rear cavity corresponds to the output data of the potentiometer one by one. Of course, other sensors for sensing volume change or sensing length and distance change are also possible, in this embodiment, the sensor is an infrared distance sensor, and the volume of the rear cavity corresponds to the output data of the infrared distance sensor one to one. Adopt infrared distance sensor not influencing the back chamber is because of changing the volume and the structural deformation difficulty, easily installation and design the back chamber can also accurately carry out distance measurement and not receive because of factors such as air pressure that the volume change produced influence. The infrared distance sensor can be used for directly monitoring the movement of the movable part of the rear cavity or monitoring the distance between the movable part and an external part.
In this embodiment, the infrared distance sensor may be used to directly monitor the movement of the movable member of the rear cavity, and the specific process is as follows:
referring to fig. 2, fig. 2 is a schematic diagram illustrating an initial state of a sensor and a back cavity according to a first embodiment of the invention. Specifically, a rear chamber a10 is provided in the speaker box a 1. The infrared distance sensor a11 is fixed in the rear cavity a10 and is provided to face the movable member a 101. In the initial state of the rear chamber a10, the infrared distance sensor a11 measures the distance d1 from the movable member a 101. Where d1 corresponds one-to-one with the volume of the initial state of the rear chamber a 10.
Referring to fig. 3, fig. 3 is a schematic diagram illustrating a sensor and a rear cavity in an expanded state according to a first embodiment of the invention. In the expanded state of the rear chamber a10, the movable member a101 moves in a direction away from the infrared distance sensor a11 to achieve volume expansion of the rear chamber a 10. At this time, the infrared distance sensor a11 measures the distance d2 from the movable member a 101. Where d2 corresponds one-to-one with the volume of the expanded state of the rear chamber a 10.
Step S2, adjusting an audio configuration parameter of the audio system according to the acquired volume data, so as to adapt the audio configuration parameter to the acquired volume.
The size of the volume of the rear cavity is matched with the audio configuration parameters one by one, the corresponding relation between the volume and the audio configuration parameters is set in advance, and the audio configuration parameters are realized in a lookup table mode, so that the processing and calculating time and the calculating hardware configuration of the audio system can be reduced. Of course, it is also possible to directly use a predetermined calculation formula. Step S2 is to make the audio system automatically switch to the adapted audio parameter setting after the audio system recognizes the rear cavity state, thereby avoiding manual setting by the user. If the user sets the parameters manually, errors of unmatched parameters are easily generated, and the situation will cause the sound quality to be reduced, even the loudspeaker box is damaged, and the user experience is not good.
And step S3, processing the audio data according to the adjusted audio configuration parameters, and sounding the processed audio data through the loudspeaker box.
And adjusting the audio configuration parameters of the audio system and processing audio input signals by adopting the audio configuration parameters, so that the loudspeaker box can accurately play sound.
(second embodiment)
Referring to fig. 4, fig. 4 is a flowchart illustrating an adaptive audio parameter adjusting method according to a second embodiment of the present invention. The difference between the adaptive audio parameter adjustment method of the second embodiment and the adaptive audio parameter adjustment method of the first embodiment is that the volume data of the rear cavity obtained in step S1 is obtained by using a microphone method.
In an implementation manner of the second embodiment, the audio system further includes a microphone and a processor electrically connected to the microphone. For example, the audio system is a mobile phone, and the mobile phone is provided with a microphone.
The audio parameter self-adaptive adjusting method comprises the following steps:
and step S01, before the loudspeaker box plays the audio, playing the test audio with fixed frequency and fixed sound amplitude.
And step S1, acquiring the volume data of the rear cavity. Wherein the step S1 includes the following steps:
and step S11, the microphone acquires the audio signal of the test audio played by the loudspeaker box and converts the audio signal into test audio data.
Step S12, the processor calculates the volume data according to the acoustic parameters of the test audio data.
The microphone is used for acquiring the audio signal, so that the existing loudspeaker box can be directly adopted by the audio system, the sensor does not need to be installed in the rear cavity of the loudspeaker box during manufacturing of the loudspeaker box, and the lead of the sensor does not need to be led out, so that the audio system is easier to assemble and realize.
In the second embodiment, the processor calculates the volume data according to the sound amplitude of the test audio data acquired by the microphone.
When the determined signal amplitude is input in audio frequency, and the audio frequency configuration parameter is set to be unchanged, different volumes of the rear cavity of the loudspeaker box bring different sound amplitude outputs.
Specifically, the acoustic parameter is a Sound Pressure Level (SPL) of the test audio data, and the most common physical quantity for Sound measurement is Sound Pressure, but describing the Sound Pressure Level is usually the Sound Pressure Level, and certainly, the description is not limited to the Sound Pressure Level, and other measured acoustic parameters are also possible.
In particular, the loudspeaker enclosure has different sound pressure levels at a certain frequency in the case of the back cavities having different volumes, and the sound pressure level SPL at a low frequency (e.g. at 200 Hz) is higher at the same voltage when the volume of the back cavity is larger. When the volume size of the rear cavity of the speaker box is within a certain range, the low-frequency loudness (i.e., sound pressure level SPL) of the speaker box is positively correlated with the volume of the rear cavity. Especially for a micro loudspeaker box, the volume of the back cavity is small, and the positive correlation relationship between the low-frequency loudness and the volume of the back cavity is very obvious.
Therefore, in the second embodiment, before playing music each time, a signal with a preset frequency is set to be sent by the audio system, and then the audio system receives sound from the microphone, and the judgment is performed according to the amplitude of the sound. The second microphone scheme of this embodiment can avoid the use of extra sensors, save the space and cost of the audio system and the speaker box.
Step S2, adjusting an audio configuration parameter of the audio system according to the acquired volume data, so as to adapt the audio configuration parameter to the acquired volume.
And step S3, processing the audio data according to the adjusted audio configuration parameters, and sounding the processed audio data through the loudspeaker box.
Referring to fig. 5-6, the present invention further provides an audio system 100 applying the adaptive audio parameter adjusting method.
The audio system 100 comprises a loudspeaker enclosure 1, a processor 2 and an amplifier 3.
The loudspeaker enclosure 1 comprises a back volume 1 with a variable volume. The loudspeaker enclosure 1 is used for sound production.
The processor 2 is configured to receive an audio input signal, process the audio input signal to obtain audio data, adjust the audio configuration parameter of the audio system according to the obtained volume data, and process and output the audio data according to the adjusted audio configuration parameter.
The processor 2 includes a rear cavity state parameter obtaining module 21, a rear cavity state judging module 22, an audio processing configuration storage unit 23, an audio parameter configuration control module 24 and an audio processing module 25.
The back cavity state parameter obtaining module 21 is configured to receive the volume data.
The back cavity state determining module 22 is configured to compare the received volume data with a pre-stored volume data, and if the two compared volume data are different, start updating the audio configuration parameter.
The audio processing configuration storage unit 23 is configured to store a plurality of audio configuration parameters. The audio configuration parameters correspond to the volume data one to one.
The audio parameter configuration control module 24 is configured to perform matching search on the audio configuration parameters stored in the audio processing configuration storage unit according to the received volume number, and perform parameter configuration on the searched matched audio configuration parameters.
The audio processing module 25 is configured to process the received audio input signal according to the audio configuration parameter to obtain the audio data.
The amplifier 3 is configured to receive the audio data output by the processor 2, perform signal amplification processing on the audio data, and output the audio data to the speaker box 1.
It should be noted that the speaker box 1, the processor 2 and the amplifier 3 are all devices or modules commonly used in the art, and a designer selects a specific device or module according to actual product requirements, which will not be described in detail herein.
Referring to fig. 7, in response to the sensor solution adopted in the first embodiment, the present invention further provides an audio system 200, and the audio system 200 applies the audio parameter adaptive adjustment method.
The audio system 200 is based on the audio system 100 with sensors mounted in the loudspeaker enclosure 1, i.e. the audio system 200 comprises the loudspeaker enclosure 1 a. Whereas the processor 2 and the amplifier 3 employ the same devices or modules.
In particular, the loudspeaker enclosure 1a comprises the back volume 10a of variable volume. A sensor 4 is also mounted in the rear chamber 10a of the loudspeaker enclosure 1 a. The sensor 4 is electrically connected with the rear cavity state parameter acquisition module 21.
Referring to fig. 8, in response to the microphone scheme adopted in the second embodiment, the invention further provides an audio system 300, and the audio system 300 applies the audio parameter adaptive adjustment method.
The audio system 300 adds a microphone to the audio system 100. Specifically, the audio system 300 further includes a microphone 5. The microphone 5 is electrically connected with the rear cavity state parameter obtaining module 21. The audio system 300 can directly adopt the existing loudspeaker box 1, does not need to install the sensor 4 in the rear cavity 10 of the loudspeaker box 1 during manufacturing, does not need to lead out the sensor 4, and is easier to assemble and realize the audio system 3000.
Compared with the prior art, the audio parameter self-adaptive adjusting method and the audio system comprise the following steps: step S1, obtaining volume data of the back cavity; step S2, adjusting the audio configuration parameters of the audio system according to the acquired volume data, so that the audio configuration parameters are matched with the acquired volume; and step S3, processing the audio data according to the adjusted audio configuration parameters, and sounding the processed audio data through the loudspeaker box. According to the method, the paired audio configuration parameters are obtained by automatically processing the volume data of the rear cavity, so that the acoustic performance of the sounding of the loudspeaker box is good.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (5)
1. An adaptive audio parameter adjustment method applied to an audio system having a speaker box with a variable volume back cavity, wherein the audio system further comprises a microphone and a processor electrically connected with the microphone, the method comprising the steps of:
step S01, before the loudspeaker box plays audio, playing test audio with fixed frequency and fixed sound amplitude;
step S11, the microphone acquires the audio signal of the test audio played by the loudspeaker box and converts the audio signal into test audio data;
step S12, the processor calculates the volume data of the back cavity according to the acoustic parameters of the test audio data;
step S2, adjusting the audio configuration parameters of the audio system according to the acquired volume data, so that the audio configuration parameters are matched with the acquired volume;
and step S3, processing the audio data according to the adjusted audio configuration parameters, and sounding the processed audio data through the loudspeaker box.
2. The adaptive audio parameter adjustment method according to claim 1, wherein the processor calculates the volume data according to a sound amplitude of the test audio data acquired by the microphone.
3. The adaptive audio parameter adjustment method according to claim 2, wherein the acoustic parameter is a sound pressure level of the test audio data.
4. An audio system, characterized in that it applies the audio parameter adaptive adjustment method according to any one of claims 1-3, the audio system further comprising:
the processor is used for receiving an audio input signal, processing the audio input signal to obtain audio data, adjusting the audio configuration parameters of the audio system according to the obtained volume data, and processing and outputting the audio data according to the adjusted audio configuration parameters;
and the amplifier is used for receiving the audio data output by the processor, carrying out signal amplification processing on the audio data and outputting the audio data to the loudspeaker box.
5. The audio system of claim 4, wherein the processor comprises:
the back cavity state parameter acquisition module is used for receiving the volume data;
the back cavity state judging module is used for comparing the received volume data with prestored volume data, and starting to update the audio configuration parameters if the two compared volume data are different;
the audio processing configuration storage unit is used for storing a plurality of audio configuration parameters, and the audio configuration parameters correspond to the volume data one by one;
the audio parameter configuration control module is used for carrying out pairing search on the audio configuration parameters stored in the audio processing configuration storage unit according to the received volume number and carrying out parameter configuration on the searched audio configuration parameters;
and the audio processing module is used for processing the received audio input signal according to the audio configuration parameters to obtain the audio data.
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| CN202011097295.0A CN112423189B (en) | 2020-10-14 | 2020-10-14 | Audio parameter self-adaptive adjusting method and audio system |
| PCT/CN2020/128315 WO2022077681A1 (en) | 2020-10-14 | 2020-11-12 | Audio parameter adaptive adjustment method and audio system |
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| CN204859501U (en) * | 2015-07-22 | 2015-12-09 | 歌尔声学股份有限公司 | Earphone |
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| CN104038882A (en) * | 2014-05-26 | 2014-09-10 | 小米科技有限责任公司 | Loudspeaker debugging model calibration method and loudspeaker debugging method and device |
| CN106303812A (en) * | 2015-05-15 | 2017-01-04 | 比亚迪股份有限公司 | Speaker anti-distorsion method and apparatus and there is the audio frequency apparatus of this device |
| CN106248006A (en) * | 2016-09-23 | 2016-12-21 | 清华大学 | A kind of contactless volume measuring method based on spectrum analysis and device |
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| CN112423189A (en) | 2021-02-26 |
| WO2022077681A1 (en) | 2022-04-21 |
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