CN111669682A - Method for optimizing sound quality of loudspeaker equipment - Google Patents
Method for optimizing sound quality of loudspeaker equipment Download PDFInfo
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- CN111669682A CN111669682A CN202010479240.XA CN202010479240A CN111669682A CN 111669682 A CN111669682 A CN 111669682A CN 202010479240 A CN202010479240 A CN 202010479240A CN 111669682 A CN111669682 A CN 111669682A
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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
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
- H03G3/20—Automatic control
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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 relates to the technical field of loudspeakers and discloses a method for optimizing the sound quality of loudspeaker equipment. The optimization method comprises the following steps: acquiring a target gain curve for describing the hearing level of a user; generating a customized gain weighting curve based on the target gain curve; superposing the customized gain weighting curve and the initial equalization adjustment curve of the loudspeaker device to obtain a customized equalization adjustment curve and transmitting the customized equalization adjustment curve to the loudspeaker device, so that the loudspeaker device performs equalization adjustment on the audio output by the loudspeaker device based on the customized equalization adjustment curve; or transmitting the customized gain weighting curve to the loudspeaker device, so that the loudspeaker device superposes the customized gain weighting curve with the initial equalization adjustment curve to obtain a customized equalization adjustment curve, and carrying out equalization adjustment on the audio output by the loudspeaker device based on the customized equalization adjustment curve. Through the mode, the method and the device can perform personalized tone quality optimization aiming at different users.
Description
Technical Field
The invention relates to the technical field of loudspeakers, in particular to a method for optimizing the sound quality of loudspeaker equipment.
Background
The sound quality of the speaker device is one of the most considered factors when purchasing. There are many researches on the sound quality of audio output by a speaker device in the industry and an ideal frequency response curve is provided. For a user, there may be a difference in hearing sensitivity of each person to audio of the same frequency, i.e. there may be a difference in hearing sensitivity of each person, and even each ear, to audio of the same frequency. However, the existing speaker devices simply improve the sound quality, and do not consider the influence of the individual hearing difference on the perception of the sound quality of the speaker device by the user, that is, part of users of the same speaker device may feel that the sound quality is good, and part of users may feel that the sound quality is poor. Therefore, the current speaker device cannot optimize the sound quality for different users.
Disclosure of Invention
In view of this, the present invention provides a method for optimizing the sound quality of a speaker device, which can perform personalized sound quality optimization for different users.
In order to solve the technical problems, the invention adopts a technical scheme that: a method for optimizing the sound quality of a speaker device is provided. The optimization method comprises the following steps: acquiring a target gain curve for describing the hearing level of a user; generating a customized gain weighting curve based on the target gain curve; superposing the customized gain weighting curve and the initial equalization adjustment curve of the loudspeaker device to obtain a customized equalization adjustment curve and transmitting the customized equalization adjustment curve to the loudspeaker device, so that the loudspeaker device performs equalization adjustment on the audio output by the loudspeaker device based on the customized equalization adjustment curve; or transmitting the customized gain weighting curve to the loudspeaker device, so that the loudspeaker device superposes the customized gain weighting curve with the initial equalization adjustment curve to obtain a customized equalization adjustment curve, and carrying out equalization adjustment on the audio output by the loudspeaker device based on the customized equalization adjustment curve.
In an embodiment of the present invention, the target gain curve is a set of a plurality of target frequency points and target gain values corresponding to the target frequency points, where the target gain value is defined as a gain value corresponding to a minimum volume at which a user can perceive audio of the target frequency points.
In an embodiment of the present invention, the step of generating a customized gain weighting curve based on the target gain curve comprises: taking a frequency point in a first preset frequency band in the target gain curve as a reference frequency point; and subtracting the gain value of the reference frequency point from the gain values of other frequency points except the reference frequency point in the target gain curve to obtain a first transition curve, and further obtain a customized gain weighting curve.
In an embodiment of the present invention, the step of obtaining the first transition curve includes: adjusting the gain value of a frequency point which is in a second preset frequency band and has a negative gain value in the first transition curve to be zero to obtain a second transition curve, and further obtaining a customized gain weighting curve; and the frequency of each frequency point in the second preset frequency band is less than that of each frequency point in the first preset frequency band.
In an embodiment of the present invention, the step of obtaining the second transition curve includes: determining an amplitude exceeding gain value which is larger than a first preset gain value in the second transition curve; and limiting the super-amplitude gain value to be not more than a first preset gain value to obtain a customized gain weighting curve, wherein the first preset gain value is a maximum gain value corresponding to the phenomenon of avoiding clipping.
In an embodiment of the invention, the step of obtaining a target gain curve describing the hearing level of the user comprises: defining a plurality of target frequency points, or acquiring a plurality of predefined target frequency points; outputting test audio frequencies of different target frequency points one by one; and acquiring a target gain value of each target frequency point, and further acquiring a target gain curve, wherein the target gain value is a gain value corresponding to the minimum volume of the test audio which can be perceived by a user.
In an embodiment of the present invention, the speaker device is an earphone; the target gain curves comprise target gain curves corresponding to the left ear and the right ear of the user and are used for obtaining customized equalization adjustment curves corresponding to the left ear and the right ear of the user, and then the speakers corresponding to the left ear and the right ear of the user of the speaker equipment respectively utilize the corresponding customized equalization adjustment curves to perform equalization adjustment on the audio output by the speakers.
In an embodiment of the present invention, the step of generating the customized gain weighting curve based on the target gain curve comprises: and transmitting the customized gain weighting curve to the loudspeaker device, and storing the customized gain weighting curve by the loudspeaker device.
In order to solve the technical problem, the invention adopts another technical scheme that: a method for optimizing the sound quality of a speaker device is provided. The optimization method comprises the following steps: loading a customized equalization adjustment curve or a customized gain weighting curve, and superposing the customized gain weighting curve and an initial equalization adjustment curve of the loudspeaker equipment to obtain a customized equalization adjustment curve; wherein the customized gain weighting curve is derived from a target gain curve describing the user's hearing level; and carrying out equalization adjustment on the output audio based on the customized equalization adjustment curve.
In an embodiment of the present invention, the optimization method further includes: and in the process of outputting the audio, performing dynamic range compression on the gain value which is larger than the second preset gain value.
The invention has the beneficial effects that: the invention provides a method for optimizing the sound quality of loudspeaker equipment. In the optimization method, a customized gain weighting curve is generated based on a target gain curve for describing the hearing level of a user, and the customized gain weighting curve and an initial equalization adjustment curve of the loudspeaker device are superposed to obtain a customized equalization adjustment curve, and the customized equalization adjustment curve is used for performing equalization adjustment on audio output by the loudspeaker device. It can be seen that the customized equalization adjustment curve based on which the equalization adjustment is performed by the speaker device according to the present invention is obtained by using the target gain curve for describing the hearing level of the user, that is, the speaker device performs equalization adjustment on the audio output by the speaker device according to the target gain curve of the user, so as to improve the sound quality of the audio output by the speaker device according to the target gain curve of the user, thereby realizing personalized sound quality optimization for different users.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention. Moreover, the drawings and the description are not intended to limit the scope of the inventive concept in any way, but rather to illustrate it by those skilled in the art with reference to specific embodiments.
Fig. 1 is a schematic flow chart of a first embodiment of a method for optimizing sound quality of a speaker apparatus according to the present invention;
fig. 2 is a schematic flow chart of a second embodiment of the method for optimizing the sound quality of the speaker apparatus according to the present invention;
FIG. 3 is a schematic flow chart illustrating an embodiment of obtaining a target gain curve according to the present invention;
fig. 4 is a flowchart illustrating a third embodiment of the method for optimizing the sound quality of a speaker apparatus according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. 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. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
Referring to fig. 1, fig. 1 is a schematic flow chart of a method for optimizing sound quality of a speaker device according to a first embodiment of the present invention. It should be noted that the method for optimizing the sound quality of the speaker device described in this embodiment is not limited to the following steps:
s101: acquiring a target gain curve for describing the hearing level of a user;
in the present embodiment, for the purpose of implementing customized sound quality optimization for different users in the present embodiment, a target gain curve for describing the hearing level of the user needs to be obtained. The target gain curve can be obtained by testing the user by using a hearing test technology commonly used in the hearing aid industry at present, and the like.
S102: generating a customized gain weighting curve based on the target gain curve;
in this embodiment, a customized gain weighting curve is generated based on a target gain curve of a user, and the customized gain weighting curve is used for optimizing the sound quality of the speaker device, so that the speaker device improves the sound quality of the audio output by the speaker device according to the target gain curve of the user, and personalized and customized sound quality optimization for different users is realized.
S103: superposing the customized gain weighting curve and the initial equalization adjustment curve of the loudspeaker device to obtain a customized equalization adjustment curve and transmitting the customized equalization adjustment curve to the loudspeaker device, or transmitting the customized gain weighting curve to the loudspeaker device, so that the loudspeaker device superposes the customized gain weighting curve and the initial equalization adjustment curve to obtain a customized equalization adjustment curve;
in this embodiment, the customized gain weighting curve and the initial equalization adjustment curve are superimposed to obtain a customized equalization adjustment curve. The customized equalization adjustment curve is used for equalizing and adjusting the audio output by the loudspeaker device based on the customized equalization adjustment curve when the loudspeaker device outputs the audio, and further improving the tone quality of the audio output by the loudspeaker device according to the target gain curve of the user.
It can be understood that, after the customized gain weighting curve and the initial equalization adjustment curve of the speaker device are superposed to obtain a customized equalization adjustment curve, the customized equalization adjustment curve is transmitted to the speaker device, so that the speaker device can directly perform equalization adjustment by using the customized equalization adjustment curve; or the customized gain weighting curve is transmitted to the loudspeaker device, so that the loudspeaker device superposes the customized gain weighting curve and the initial equalization adjustment curve to obtain a customized equalization adjustment curve, and the customized equalization adjustment curve is used for equalization adjustment.
The customized equalization adjustment curve and the initial equalization adjustment curve of the speaker device both include a plurality of frequency points and compensation of gain values corresponding thereto (in other embodiments, quality factor Q values corresponding to the frequency points may also be included), and are used for performing equalization adjustment on audio output by the speaker device. The initial equalization adjustment curve of the loudspeaker device is determined when the loudspeaker device is shipped, and can be directly called from the loudspeaker device. It should be noted that the equalization adjustment of the loudspeaker device is based on an Equalizer (EQ) to compensate the defects of the loudspeaker device and the sound field, compensate and modify various sound sources, and other special effects by adjusting the gain of the electrical signals of different frequencies.
It can be seen that the customized equalization adjustment curve based on which the speaker device performs equalization adjustment is obtained by using the target gain curve for describing the hearing level of the user, that is, the speaker device performs equalization adjustment on the audio output by the speaker device according to the target gain curve of the user, so as to improve the sound quality of the audio output by the speaker device according to the target gain curve of the user, thereby implementing sound quality optimization for different users.
Referring to fig. 2, fig. 2 is a schematic flow chart of a second embodiment of a method for optimizing sound quality of a speaker device according to the present invention. It should be noted that the method for optimizing the sound quality of the speaker device described in this embodiment is not limited to the following steps:
s201: acquiring a target gain curve G0 for describing the hearing level of the user;
in the present embodiment, for the purpose of optimizing the sound quality for different users in the present embodiment, it is necessary to obtain a target gain curve G0 for describing the hearing level of the user. The target gain curve G0 of the user can be obtained by testing the user through the hearing test function of the terminal, and so on.
Specifically, please refer to fig. 3. Fig. 3 shows a specific implementation manner of obtaining the target gain curve G0 of the user in step S201 of the embodiment, which is not limited to the following steps:
the target gain curve G0 is a set of a plurality of target bins and target gain values corresponding to the target bins. The target gain value is defined as a gain value corresponding to the minimum volume of the audio of the target frequency point which can be perceived by a user, namely, the target gain value corresponding to each target frequency point describes the sensitivity of the user to the audio of the target frequency point.
S2011: defining a plurality of target frequency points, or acquiring a plurality of predefined target frequency points;
in this embodiment, a plurality of target frequency points are defined for the subsequent test of the user to obtain a target gain curve G0 of the user. Certainly, a plurality of target frequency points can be predefined, and the test only needs to directly acquire the predefined target frequency points without redefining the target frequency points, so that the test process is accelerated, and the test time is shortened.
S2012: outputting test audio frequencies of different target frequency points one by one;
in this embodiment, the test audios of different target frequency points are output one by one to measure the hearing thresholds of the user for the test audios of different target frequency points, which will be described in detail below, so as to obtain a target gain curve G0 of the user. The output test audio is pure tone, and the embodiment is applied to a quiet environment, i.e. the ambient volume needs to be lower than the set value, to allow the method for obtaining the target gain curve G0 of the user as set forth in the embodiment. Wherein, the set value is the maximum value of the ambient volume in the quiet environment.
The method for acquiring the target gain curve G0 of the user described in this embodiment may be software such as an Application program (APP) installed on a smart mobile terminal such as a smart phone or a computer. For example, the smart mobile terminal collects the ambient volume through a microphone equipped therein and determines whether the ambient volume is lower than a set value. Similarly, the method for optimizing the sound quality of the speaker device described in this embodiment may also be applied to software such as an application program installed on an intelligent mobile terminal such as a smart phone and a computer, and is not limited herein.
S2013: acquiring a target gain value of each target frequency point, and further acquiring a target gain curve G0;
in this embodiment, the target gain value is specifically a gain value corresponding to the minimum volume at which the user can perceive the test audio. Specifically, after the test audio of the target frequency point is output, when the user can hear the test audio, the user reduces the volume by reducing the gain value of the test audio, and when the user cannot hear the test audio, the user increases the volume by increasing the gain value of the test audio, and so on until the user just can hear the test audio. At this time, the volume of the test audio reaches the hearing threshold, which means that the gain value corresponding to the volume of the test audio is the target gain value of the target frequency point corresponding to the test audio. Repeating the above process to obtain the target gain value of each target frequency point, wherein the sequence of the target gain values of the target frequency points formed by each target frequency point and the target gain value thereof is the target gain curve G0 of the user, and is used for describing the hearing sensitivity of the user to different frequencies of audio.
Further, data such as hearing curves of a large number of users of different crowd categories may be stored in advance. Before the testing process of the user target gain curve G0 is started, the user category may be determined according to the information of the user, such as age, gender, and occupation, and then the initial volume value of the test audio may be optimized according to the average hearing curve of the user category, so as to reduce the testing time and improve the testing efficiency. Specifically, when the test audio of the target frequency point is output, the initial volume value of the test audio is preferably a volume value that can be generally heard by the crowd category to which the user belongs.
Further, the speaker device may be an electronic device having an audio output function such as an earphone or a stereo. Particularly, when the speaker device is an earphone, the speaker device is designed with corresponding speakers corresponding to the left and right ears of the user, and therefore, it is necessary to optimize the sound quality of the speakers corresponding to the left and right ears of the user. Specifically, the target gain curves G0 corresponding to the left ear and the right ear of the user are obtained, and the subsequent method steps are performed for the target gain curves G0 corresponding to the left ear and the right ear of the user.
The following generally describes the case of the target gain curve G0 corresponding to the left and right ears of the user. Some target frequency points are selected only for example, and actually more or fewer target frequency points may be included, which is not limited herein.
| Frequency point | 100Hz | 200Hz | 400Hz | 800Hz | 1600Hz | 3200Hz | 6400Hz | 12800Hz |
| Left ear | xxdB | xxdB | xxdB | xxdB | xxdB | xxdB | xxdB | xxdB |
| Right ear | xxdB | xxdB | xxdB | xxdB | xxdB | xxdB | xxdB | xxdB |
Of course, in other embodiments of the present invention, a hearing curve of the user may be obtained, and sound quality optimization is performed based on the hearing curve of the user. The hearing curve of the user can be obtained by inverting the target gain value of each target frequency point in the obtained target gain curve G0. Specifically, the target gain value of each target frequency point in the obtained target gain curve G0 is converted into a corresponding inverse number. For example, if the target gain value of the target bin a in the obtained target gain curve G0 of the user is B, the gain value of the bin a in the obtained hearing curve is-B.
That is to say, the target gain curve G0 for describing the hearing level of the user according to the embodiment of the present invention may be a set of a plurality of target frequency points directly obtained through a test and target gain values corresponding to the target frequency points, or a hearing curve of the user, that is, a set of a plurality of target frequency points directly obtained through a test and opposite numbers of target gain values corresponding to the target frequency points, both of which can describe the hearing level of the user.
It should be noted that, if the sound quality is optimized based on the hearing curve of the user, before the subsequent optimization step, the gain value of each frequency point in the hearing curve of the user needs to be further inverted, that is, the gain value of each frequency point in the hearing curve of the user needs to be converted into a corresponding opposite number, and then the subsequent optimization step is performed.
S202: calibrating the target gain curve G0 by taking the reference frequency point as a reference to obtain a first transition curve G1;
in this embodiment, in order to avoid that the final customized gain weighting curves G3 of the left and right ears of the user have too large difference to affect the sound quality balance of the speakers corresponding to the left and right ears of the user, the target gain curve G0 obtained by the target gain curve G0 of the user needs to be calibrated with reference to the reference frequency point, wherein the target gain curves G0 of the left and right ears of the user need to be calibrated respectively. Since the optimization process of the target gain curves G0 of the left and right ears of the user is the same, the following steps are the same as the calibration process of the target gain curve G0 of one ear.
Specifically, a frequency point in the first preset frequency band in the target gain curve G0 is taken as a reference frequency point, and the gain values of the reference frequency point are subtracted from the gain values of other frequency points in the target gain curve G0 except the reference frequency point to obtain a first transition curve G1, that is, the calibration process is completed.
In this embodiment, the first predetermined frequency band is preferably an intermediate frequency band. In this embodiment, a frequency point in the intermediate frequency band is selected as the reference frequency point, because the hearing sensitivity of the human ear to the intermediate frequency audio is the highest, and the hearing sensitivity of the human ear to the intermediate frequency audio is less changed with age for the high frequency, and the intermediate frequency audio is not easily affected by the test environment for the low frequency.
Alternatively, the first preset frequency band may preferably be 400Hz to 2000Hz, and the reference frequency point may preferably be 1600Hz, etc. Also, the corresponding high frequency band is preferably a band above 2000Hz, and the corresponding low frequency band is preferably a band below 400 Hz.
S203: adjusting the gain value of a frequency point, which is in a second preset frequency band and has a negative gain value, in the first transition curve G1 to zero to obtain a second transition curve G2;
in this embodiment, the gain value of the first transition curve G1, which may have a negative impact on sound quality, needs to be adjusted. Specifically, the gain value of the frequency point in the first transition curve G1, which is in the second preset frequency band and has a negative gain value, needs to be adjusted to zero. The frequency of each frequency point in the second preset frequency band is smaller than the frequency of each frequency point in the first preset frequency band, that is, the second preset frequency band is the low frequency band described above, that is, negative gain compensation is not performed on the low frequency audio.
S204: determining an amplitude exceeding gain value which is larger than a first preset gain value in a second transition curve G2, limiting the amplitude exceeding gain value to be not larger than the first preset gain value, and obtaining a customized gain weighting curve G3;
in this embodiment, in order to avoid clipping distortion of the digital signal of the audio due to an excessively high gain, it is necessary to perform amplitude limiting processing on the gain value of the frequency point in the second transition curve G2. Specifically, an amplitude exceeding gain value larger than a first preset gain value in the second transition curve G2 is determined, and the amplitude exceeding gain value is limited to be not larger than the first preset gain value, so as to obtain a customized gain weighting curve G3. The first predetermined gain value is a maximum gain value corresponding to the clipping phenomenon.
S205: transmitting the customized gain weighting curve G3 to the speaker device, or superposing the customized gain weighting curve G3 and the initial equalization adjustment curve E0 of the speaker device to obtain a customized equalization adjustment curve E1 and transmitting the customized equalization adjustment curve E1 to the speaker device;
in the present embodiment, the customized gain weighting curve G3 and the initial equalization adjustment curve E0 are superimposed to obtain a customized equalization adjustment curve E1. When the speaker apparatus outputs the audio, the customized equalization adjustment curve E1 is used for equalizing the audio output by the speaker apparatus based on the customized equalization adjustment curve E1, and further improving the sound quality of the audio output by the speaker apparatus with respect to the user target gain curve G0. And through more detailed measurement, other acoustic parameters of the loudspeaker device except for the frequency response curve can be optimized, including loudness, time delay, phase and the like. In addition, based on the hearing data of a large number of users, the average hearing level representing the hearing sensitivity of the large number of users can be used to participate in the balance adjustment of the speaker device, so that the default sound quality of the speaker device can meet the requirement of the target user.
Specifically, the customized gain weighting curve G3 and the initial equalization adjustment curve E0 of the loudspeaker device may be superimposed to obtain a customized equalization adjustment curve E1, and then the customized equalization adjustment curve E1 may be transmitted to the loudspeaker device, so that the loudspeaker device may directly perform equalization adjustment using the customized equalization adjustment curve E1; or the customized gain weighting curve G3 is transmitted to the speaker device, so that the speaker device superimposes the customized gain weighting curve G3 and the initial equalization adjustment curve E0 to obtain a customized equalization adjustment curve E1, and the customized equalization adjustment curve E1 is used for equalization adjustment.
The customized gain weighting curve G3 and the initial equalization adjustment curve E0 are superposed to obtain a customized equalization adjustment curve E1, specifically, gain values of the same frequency points in the customized gain weighting curve G3 and the initial equalization adjustment curve E0 are added to obtain a customized equalization adjustment curve E1 (at this time, quality factor Q values corresponding to the frequency points may be fixed; of course, in other embodiments, the quality factor Q values are also adjusted before the customized gain weighting curve G3 and the initial equalization adjustment curve E0 are superposed). The speakers corresponding to the left ear and the right ear of the user of the speaker device respectively perform equalization adjustment on the audio output by the speakers by using the corresponding customized equalization adjustment curve E1.
The customized gain weighting curve G3 or the customized equalization adjustment curve E1 may be transmitted to the speaker device by a wireless communication method or a wired communication method, and written in firmware of the speaker device, and stored by the speaker device, so as to be loaded by the speaker device and used for equalizing and adjusting the audio output by the speaker device. The speaker apparatus can directly use the customized gain weighting curve G3 or the customized equalization adjustment curve E1 stored therein without performing the above-mentioned process of generating the customized gain weighting curve G3 based on the user target gain curve G0 each time equalization adjustment is performed, so as to improve the user experience.
Optionally, the way of transmitting the customized gain weighting curve G3 to the speaker device may include a wireless communication way such as BLE (Bluetooth Low Energy), 2.4G, etc., or other wired communication ways, which is not limited herein.
Moreover, if in the actual process, the user is still unsatisfied with the sound quality after the loudspeaker device is optimized, the user can manually adjust the gain value of the corresponding frequency point in the customized gain weighting curve G3, so that the sound quality of the loudspeaker device can better meet the subjective preference of the user. The user can also open or close the customized tone quality optimization scheme provided by the embodiment on the software such as the application program and the like installed on the intelligent mobile terminal such as the intelligent mobile phone, the computer and the like. In addition, the user can share the customized gain weighting curve G3 with the community of the application program, so that other users using the application program can use the customized gain weighting curve G3 obtained in this embodiment to feel the sound quality of the audio output from the speaker device optimized by the customized gain weighting curve G3. It should be noted that the main body of the process of personalized and customized sound quality optimization described in this embodiment may be a terminal independent from the speaker device, such as a smart phone, a computer, and the like, and specifically may be an Application program (APP) on the terminal. Of course, the personalized and customized sound quality optimization function described in this embodiment may also be integrated into a speaker device, such as an earphone, and is not limited herein.
Referring to fig. 4, fig. 4 is a schematic flow chart of a third embodiment of a method for optimizing sound quality of a speaker device according to the present invention. It should be noted that the method for optimizing the sound quality of the speaker device described in this embodiment is not limited to the following steps:
s301: loading a customized equalization adjustment curve E1 or a customized gain weighting curve G3, and superposing the customized gain weighting curve G3 and an initial equalization adjustment curve E0 of the loudspeaker equipment to obtain a customized equalization adjustment curve E1;
in this embodiment, if the speaker device receives the customized equalization adjustment curve E1, the speaker device may directly load the customized equalization adjustment curve E1 when outputting the audio, so as to perform equalization adjustment on the audio output by the speaker device. If the loudspeaker device receives the customized gain weighting curve G3, when the loudspeaker device outputs the audio, the loudspeaker device needs to further superimpose the customized gain weighting curve G3 and the initial equalization adjustment curve E0 of the loudspeaker device to obtain a customized equalization adjustment curve E1, and then use the customized equalization adjustment curve E1 to perform equalization adjustment on the audio output by the loudspeaker device.
S302: carrying out equalization adjustment on the output audio based on the customized equalization adjustment curve E1;
in this embodiment, the audio output by the speaker device is subjected to equalization adjustment based on the customized equalization adjustment curve E1, where the customized equalization adjustment curve E1 is obtained by using a target gain curve for describing the hearing level of the user (the specific process of obtaining the customized equalization adjustment curve E1 has been described in detail in the above embodiments, and is not described here again), that is, the speaker device performs equalization adjustment on the audio output by the speaker device according to the target gain curve of the user, so as to improve the sound quality of the audio output by the speaker device according to the target gain curve of the user, thereby implementing sound quality optimization for different users.
Further, in the process of outputting audio by the speaker device, the speaker device further has a Dynamic Range Compression (DRC) function. Specifically, the dynamic range compression is performed on the gain value which is larger than the second preset gain value in the audio output by the loudspeaker device. The second preset gain value is smaller than the first preset gain value, and when the amplitude of the audio output by the loudspeaker equipment exceeds the second preset gain value, in order to avoid clipping distortion caused by exceeding the first preset gain value, the dynamic range compression is carried out on the gain value larger than the second preset gain value.
It should be noted that the speaker device of the present embodiment can provide two equalization adjustment curves to the user. One is an initial equalization adjustment curve E0 of the speaker device to provide the user with audio of a default sound quality of the speaker device, and the other is a customized equalization adjustment curve E1 obtained by superimposing the customized gain weighting curve G3 and the initial equalization adjustment curve E0 of the speaker device to provide the user with audio of a customized sound quality. The user can load the customized gain weighting curve G3 and the initial equalization adjustment curve E0 according to the requirement of the user, so as to obtain a customized equalization adjustment curve E1 by superposition, so that the loudspeaker device outputs the audio with the customized sound quality. Or the initial equalization adjustment curve E0 is loaded, and the output audio is equalized by using the initial equalization adjustment curve E0, so that the speaker device outputs audio of a default sound quality.
In summary, according to the method for optimizing the sound quality of the speaker device provided by the present invention, a customized gain weighting curve is generated based on a target gain curve for describing the hearing level of the user, and the customized gain weighting curve and the initial equalization adjustment curve of the speaker device are superimposed to obtain a customized equalization adjustment curve, and the customized equalization adjustment curve is used for performing equalization adjustment on the audio output by the speaker device. It can be seen that the customized equalization adjustment curve based on which the equalization adjustment is performed by the speaker device according to the present invention is obtained by using the target gain curve for describing the hearing level of the user, that is, the speaker device performs equalization adjustment on the audio output by the speaker device according to the target gain curve of the user, so as to improve the sound quality of the audio output by the speaker device according to the target gain curve of the user, thereby realizing personalized sound quality optimization for different users.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for optimizing the sound quality of a speaker device, the method comprising:
acquiring a target gain curve for describing the hearing level of a user;
generating a customized gain weighting curve based on the target gain curve;
superposing the customized gain weighting curve and an initial equalization adjustment curve of the loudspeaker device to obtain a customized equalization adjustment curve and transmitting the customized equalization adjustment curve to the loudspeaker device, so that the loudspeaker device performs equalization adjustment on the audio output by the loudspeaker device based on the customized equalization adjustment curve; or
And transmitting the customized gain weighting curve to the loudspeaker device, so that the loudspeaker device superposes the customized gain weighting curve with an initial equalization adjustment curve thereof to obtain a customized equalization adjustment curve, and carrying out equalization adjustment on the audio output by the customized equalization adjustment curve based on the customized equalization adjustment curve.
2. The optimization method according to claim 1, wherein the target gain curve is a set of a plurality of target frequency points and target gain values corresponding to each of the target frequency points, wherein the target gain value is defined as a gain value corresponding to a minimum volume at which a user can perceive audio of the target frequency points.
3. The optimization method of claim 2, wherein the step of generating a customized gain weighting curve based on the target gain curve comprises:
taking a frequency point in a first preset frequency band in the target gain curve as a reference frequency point;
and subtracting the gain value of the reference frequency point from the gain values of other frequency points except the reference frequency point in the target gain curve to obtain a first transition curve, and further obtain the customized gain weighting curve.
4. The optimization method according to claim 3, wherein the step of obtaining a first transition curve is followed by:
adjusting the gain value of a frequency point which is in a second preset frequency band and has a negative gain value in the first transition curve to be zero to obtain a second transition curve, and further obtain the customized gain weighting curve;
and the frequency of each frequency point in the second preset frequency band is less than that of each frequency point in the first preset frequency band.
5. The optimization method according to claim 4, wherein the step of obtaining a second transition curve is followed by:
determining an amplitude exceeding gain value which is larger than a first preset gain value in the second transition curve;
and limiting the super-amplitude gain value to be not more than the first preset gain value to obtain the customized gain weighting curve, wherein the first preset gain value is the maximum gain value corresponding to the phenomenon of avoiding clipping.
6. The optimization method according to claim 2, wherein the step of obtaining a target gain curve describing the hearing level of the user comprises:
defining a plurality of target frequency points, or acquiring a plurality of predefined target frequency points;
outputting test audio frequencies of different target frequency points one by one;
and acquiring the target gain value of each target frequency point to further obtain the target gain curve, wherein the target gain value is a gain value corresponding to the minimum volume of the test audio which can be perceived by a user.
7. The optimization method according to any one of claims 1 to 6,
the loudspeaker device is an earphone;
the target gain curves comprise target gain curves corresponding to the left ear and the right ear of the user and are used for obtaining customized equalization adjustment curves corresponding to the left ear and the right ear of the user, and therefore the speakers corresponding to the left ear and the right ear of the user of the speaker equipment respectively utilize the corresponding customized equalization adjustment curves to perform equalization adjustment on the audio output by the speakers.
8. The optimization method according to any one of claims 1 to 6, wherein the step of generating a customized gain weighting curve based on the target gain curve is followed by:
and transmitting the customized gain weighting curve to the loudspeaker device, and storing the customized gain weighting curve by the loudspeaker device.
9. A method for optimizing the sound quality of a speaker device, the method comprising:
loading a customized equalization adjustment curve or a customized gain weighting curve, and superposing the customized gain weighting curve and an initial equalization adjustment curve of the loudspeaker equipment to obtain a customized equalization adjustment curve; wherein the customized gain weighting curve is derived from a target gain curve describing a user's hearing level;
and carrying out equalization adjustment on the output audio based on the customized equalization adjustment curve.
10. The optimization method according to claim 9, further comprising:
and in the process of outputting the audio, performing dynamic range compression on the gain value which is larger than the second preset gain value.
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| CN202010479240.XA CN111669682A (en) | 2020-05-29 | 2020-05-29 | Method for optimizing sound quality of loudspeaker equipment |
| PCT/CN2021/086669 WO2021238458A1 (en) | 2020-05-29 | 2021-04-12 | Method for optimizing sound quality of speaker device |
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