CN117193115A - Control method and device - Google Patents
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- CN117193115A CN117193115A CN202311279458.0A CN202311279458A CN117193115A CN 117193115 A CN117193115 A CN 117193115A CN 202311279458 A CN202311279458 A CN 202311279458A CN 117193115 A CN117193115 A CN 117193115A
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Abstract
The application provides a control method and a control device, wherein the method comprises the following steps: in response to obtaining the target sound source signal, controlling a power amplifier of the audio output module to have a target output power; the target sound source signal is processed based on the target output power so as to drive a loudspeaker of the audio output module to output the audio content of the target sound source signal with peak power.
Description
Technical Field
The present application relates to the field of control technologies, and in particular, to a control method and apparatus.
Background
In daily life and work, it is often necessary to output various audio signals by using electronic devices.
In the prior art, in an electronic device, an output power of a power amplifier of an audio output module is set to a rated power of an audio output device such as a speaker. The output power of the power amplifier has a great influence on the signal quality of the audio signal output by the electronic device, so that the signal quality of the audio signal output by the electronic device is often influenced due to the limitation of the output power of the power amplifier.
Disclosure of Invention
In one aspect, the present application provides a control method, including:
in response to obtaining the target sound source signal, controlling a power amplifier of the audio output module to have a target output power;
And processing the target sound source signal based on the target output power so as to drive a loudspeaker of the audio output module to output the audio content of the target sound source signal with peak power.
In one possible implementation, the target sound source signal is obtained, including at least one of:
acquiring application information of running applications of electronic equipment, determining a sound source signal generated by at least one application in a target list as the target sound source signal, wherein the audio output module is assembled on the electronic equipment, or a target communication connection is established between the audio output module and the electronic equipment;
monitoring a sound source signal input to the audio output module, and determining the sound source signal with the target signal parameter as the target sound source signal;
identifying a sound source signal input to the audio output module, and determining the sound source signal carrying target audio content as the target sound source signal;
identifying identification information carried by the sound source signals input to the audio output module, and determining the sound source signals carrying the target identification information as the target sound source signals.
In yet another possible implementation, controlling the power amplifier of the audio output module to have a target output power includes at least one of:
Determining peak power of a loudspeaker of an audio output module, and configuring the peak power as target output power of the power amplifier;
and determining the peak power of a loudspeaker of the audio output module, and controlling the power amplifier to have target output power based on the peak power and the identification information carried by the target sound source signal, wherein the target output power is not greater than the peak power.
In yet another possible implementation manner, the method further includes:
determining power supply parameters of the electronic equipment;
if the system power consumption of the electronic equipment is determined to be smaller than the corresponding power consumption threshold value based on the power supply parameter, controlling the power amplifier to adjust the output power of the power amplifier to the target output power;
and if the power supply information characterizes that the system power consumption of the electronic equipment is not smaller than the corresponding power consumption threshold value, controlling the power amplifier to maintain the current output power of the power amplifier.
In yet another possible implementation, the driving the speaker of the audio output module outputs the audio content of the target audio source signal at peak power includes:
determining the maximum duration that the loudspeaker can continuously work under the peak power, and controlling the power amplifier to input the target sound source signal to the loudspeaker of the audio output module at the target output power within the maximum duration so that the loudspeaker can output the audio content of the target sound source signal at the peak power within the maximum duration.
In yet another possible implementation manner, the control method further includes:
and adjusting the amplitude parameter of the target sound source signal so that the actual output power of the power amplifier is the rated power of a loudspeaker, and driving the loudspeaker to output the target sound source signal based on the rated power.
In yet another possible implementation manner, the adjusting the amplitude parameter of the target audio source signal includes:
and adjusting the amplitude parameter of the target sound source signal based on the configuration information of the loudspeaker and the configuration parameter of the power amplifier.
In yet another possible implementation manner, the control method further includes:
and adjusting the trigger time length required by the trigger to adjust the amplitude parameter of the target sound source signal so that the trigger time length is shorter than the maximum time length of the loudspeaker which can continuously work under the peak power.
In yet another possible implementation, the control method further includes at least one of:
outputting target prompt information to prompt a user to adjust the target sound source signal to be output under the condition that the amplitude parameter of the target sound source signal exceeds an amplitude threshold value;
Under the condition that the electronic equipment is configured and connected with a plurality of audio output modules, determining a target audio output module based on the signal parameters of the target audio source signals and the configuration parameters of the audio output modules so as to output the target audio source signals through the target audio output module, wherein the target audio output module is unique or non-unique.
In still another aspect, the present application further provides a control apparatus, including:
a power control unit for controlling the power amplifier of the audio output module to have a target output power in response to obtaining the target sound source signal;
and the signal processing unit is used for processing the target sound source signal based on the target output power so as to drive a loudspeaker of the audio output module to output the audio content of the target sound source signal with peak power.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only embodiments of the present application, and other drawings may be obtained according to the provided drawings without inventive effort for a person skilled in the art.
Fig. 1 shows a schematic flow chart of a control method according to an embodiment of the present application;
fig. 2 is a schematic diagram of a composition architecture involved in implementing audio signal output by an electronic device according to an embodiment of the present application;
fig. 3 shows a schematic flow chart of a control method according to an embodiment of the present application;
fig. 4 shows a schematic flow chart of a control method according to an embodiment of the present application;
FIG. 5 shows a schematic diagram of the connection of a power amplifier to a voltage divider circuit;
fig. 6 shows a schematic waveform of an audio signal that can be output by the power amplifier before the present solution is adopted;
fig. 7 shows a waveform diagram of an audio signal that can be output by the power amplifier according to the present application;
fig. 8 is a schematic diagram showing a composition structure of a control device according to an embodiment of the present application;
fig. 9 is a schematic diagram of a composition architecture of an electronic device according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without any inventive effort, are intended to be within the scope of the application.
As shown in fig. 1, which is a schematic flow chart of a control method provided by the embodiment of the present application, the method of the present embodiment may be applied to an electronic device, where the electronic device may be configured with an audio output module, and the audio output module is configured to output an audio signal outwards.
The audio output module is assembled in the electronic equipment, for example, the audio output module is an audio output module which is arranged in the electronic equipment. Taking the electronic equipment as a mobile phone, an intelligent sound box or a notebook computer as an example, the audio output module can be an audio output module assembled inside the mobile phone, the intelligent sound box or the notebook computer.
The audio output module can also be in communication connection with the electronic equipment. For example, the electronic device is connected to the electronic device through a line supporting an audio transmission format, or the audio output module is connected to the electronic device through a wireless manner such as bluetooth or WiFi, etc.
The method of the embodiment can comprise the following steps:
s101, in response to obtaining the target sound source signal, controlling a power amplifier of the audio output module to have target output power.
The target audio signal is an audio signal to be output by the audio output module.
In the present application, the target audio signal may be an audio signal having a requirement for audio output quality, and may be specifically set according to actual needs.
Obtaining a target sound source signal including at least one of:
case 1: and obtaining application information of the running application of the electronic equipment, and determining a sound source signal generated by at least one application in the target list as the target sound source signal.
The application information of the application may be at least one of information such as a name and a type of the application.
The target white list may include at least one application, where the application may be considered as an application with a high quality requirement for the audio signal.
For example, for games, audio playback applications or video playback applications, the quality requirements for the output audio signals are high, and therefore the application types or application names of these types of applications may be preconfigured into the target whitelist. On the basis of this, when audio signals from these applications are detected, the processing according to the scheme of the application can be triggered to improve the quality of the output audio signals.
Case 2: and monitoring the sound source signal input to the audio output module, and determining the sound source signal with the target signal parameter as a target sound source signal.
The target signal parameters may be set as required, for example, the audio source signal having the target signal parameters may be: the sound source signal has at least one signal characteristic of current, voltage, power, waveform and the like which meet the set requirements.
The current, voltage, power, amplitude and setting requirements to be met by the waveform can be set according to requirements, for example, the current, voltage or power of the sound source signal exceeds a set threshold value, and the sound source signal is determined to be target sound source information; the waveform is in accordance with the set waveform characteristics, and the sound source signal is determined to be the target sound source signal.
Case 3: and identifying the sound source signal input to the audio output module, and determining the sound source signal carrying the target audio content as a target sound source signal.
The target audio content is an audio content belonging to a designated user or a sound source, or an audio content belonging to a set type, or the like.
Case 4: identifying the identification information carried by the sound source signal input to the audio output module, and determining the sound source signal carrying the target identification information as the target sound source signal.
The identification information carried by the sound source signal is information for representing the source or source characteristics of the sound source signal. For example, the identification information may be voiceprint information of the audio source signal or an application identification of the application from which the audio source signal originates.
The audio output module is a module of the electronic equipment for outputting audio signals. For example, the audio output module at least includes: a power amplifier and a speaker. Of course, the audio output module may further include: and the codec is arranged at the front end of the power amplifier.
For ease of understanding, taking an audio output module built in an electronic device as an example, as shown in fig. 2, a schematic diagram of a composition architecture for implementing audio output in the electronic device is shown.
As can be seen from fig. 2, the audio output module of the electronic device sequentially includes: a codec 201, a power amplifier 202 and a speaker 203.
The south bridge chip 204 of the electronic device may input the target sound source signal to be output to the codec 201 under the control of a processor (not shown in the figure), process the target sound source signal by the codec 201, input the processed target sound source signal to the power amplifier 202, amplify the target sound source signal by the power amplifier, and output the processed target sound source signal through the speaker 203.
Of course, fig. 2 is merely a simple example, and in practical application, the electronic device may input the target audio source signal to the codec from the chip integrated with the processor without going through the south bridge chip, which is not limited.
Wherein controlling the power amplifier of the audio output module to have the target output power may be setting the output power of the power amplifier to the target output power. For example, the rated power of the power amplifier is changed to the target output power, so that the power amplifier processes the target sound source signal when the output power of the power amplifier is within the target output power, and naturally, the power amplifier can support the maximum target sound source signal processing at the target output power.
S102, processing the target sound source signal based on the target output power so as to drive a loudspeaker of the audio output module to output the audio content of the target sound source signal with peak power.
In the application, the power amplifier is controlled to have the target output power, so that the power amplifier can process the target sound source signal on the premise that the actual output power does not exceed the target output power.
Wherein, the processing of the target sound source signal may include: at least one of amplifying, filtering and denoising the target sound source signal.
It will be appreciated that in the case where the speaker outputs a target sound source signal at peak power, the audio content in the target sound source signal output by the speaker may be made to include a high frequency signal portion in the target sound source signal, such as a sound source signal portion having an amplitude exceeding a set threshold value, or the like.
It should be noted that, in order to improve the audio quality output by the audio output module and ensure the safety of the speaker, the application does not always drive the speaker to output the target sound source signal with peak power, and can comprehensively determine the duration of driving the speaker to output the target sound source signal with peak power in combination with the application of the source of the target sound source signal and the current running state of the application.
The inventors of the present application studied and found that: if the output power of the power amplifier is small, the output capability of the audio signal is limited. For example, the output power of the power amplifier is smaller, the amplifying capability of the power amplifier to the audio signal is limited, so that the gain improvement of some audio signals with smaller amplitude is limited, and the performance of the loudspeaker is limited; in addition, the smaller output power of the power amplifier can also lead to the clipping of the audio signal with larger amplitude, and finally, the sound pressure of the output audio signal is smaller, thus affecting the tone quality of the output audio signal.
In the application, in response to obtaining the target sound source signal, the power amplifier of the audio output module is controlled to have target output power, and in the case that the power amplifier processes the target sound source signal based on the target output power, the loudspeaker can output the audio content of the target sound source signal with peak power, so that the output power of the loudspeaker is improved relative to the rated power of the loudspeaker. Because the output power of the power amplifier can directly influence the output power of the loudspeaker, the improvement of the output power of the loudspeaker also represents that the output power supported by the power amplifier is improved, so that the output power supported by the power amplifier is not limited by the rated power of the loudspeaker any more, the situation that the tone quality of the audio signal finally output by the audio output module is influenced due to the limitation of the output power of the power amplifier can be reduced by improving the output power supported by the power amplifier, and the audio quality of the audio signal output by the loudspeaker of the audio output module can be improved.
For example, the output power of the power amplifier is controlled to be the target output power, so that the output power of the power amplifier is reduced, the gain of some low-amplitude signals can be effectively improved, and the performance of the loudspeaker is effectively utilized to improve the signal tone quality; it is also possible to reduce clipping of some higher amplitude signals due to power limitations of the power amplifier, and naturally also to reduce undershoot caused by clipping of the signal.
In addition, the application can improve the output power of the power amplifier, and simultaneously can make the output power of the loudspeaker be peak power, and can not drive the loudspeaker to output target sound source signals with overlarge output power, thereby reducing damage caused by overlarge output power of the loudspeaker.
In the application, the audio quality requirements are also different in consideration of the difference of the application of the source of the target audio signal, the user or the source of the sound, so that the required target output power is also different, and the application is not limited.
Correspondingly, the specific implementation of controlling the output power of the power amplifier in the audio output module to be the target output power may also be different.
For example, in one possible implementation, the present application may determine the peak power of the speakers in the audio output module, and configure the peak power as the target output power of the power amplifier.
The target output power of the power amplifier refers to the output power actually supported by the power amplifier, and based on this, the target output power of the power amplifier is configured as the peak power of the speaker, which can be regarded as the rated power in the power amplifier is configured as the peak power of the speaker.
The peak power of the speaker refers to the maximum output power that the speaker can support.
It will be appreciated that the input audio signal is processed by the power amplifier and then fed to the speaker to drive the speaker to output the processed audio signal, so that the output power of the power amplifier has a significant effect on the sound quality of the audio signal finally output by the speaker.
As described above, changing the target output power of the power amplifier from the rated power of the speaker to the peak power of the speaker improves the output power supported by the power amplifier, naturally reduces the limitation of the output capability of the power amplifier to the audio signal, improves the amplifying capability of the power amplifier to the audio signal, effectively improves the gain of some audio signals with smaller amplitude, and reduces the performance of the speaker. In addition, the output power supported by the power amplifier is increased, the condition that the audio signal with larger amplitude is clipped is also reduced, the sound pressure of the output audio signal can be increased, and the sound quality of the output audio signal is improved.
In yet another possible implementation manner, the present application may further determine a peak power of a speaker of the audio output module, and control the power amplifier to have the target output power based on the peak power and the identification information carried by the target audio source signal.
Wherein the target output power is not greater than the peak power.
It will be appreciated that the identification information carried by the target sound source signal may characterize the application from which the target sound source signal originates and the source sounding body (e.g. user or other organism, etc.), and that different applications may have different requirements for audio quality, and that audio signals derived from different source sounding bodies may also have different requirements for audio quality, e.g. for audio signals emitted by animals, relatively low requirements for sound quality, etc.
Based on the method, the device and the system, the target output power can be reasonably determined by combining the identification information carried by the target sound source signal and the peak power, and the power amplifier is controlled to have the target output power, so that the power amplifier can drive the loudspeaker to work in a working state not higher than the peak power.
It can be understood that increasing the output power of the power amplifier necessarily increases the power consumption of the electronic device, and based on this, in order to reduce the influence on the electronic device, the present application may also combine the system power consumption situation of the electronic device to determine whether the output power of the power amplifier needs to be adjusted.
The following description is made with reference to fig. 3.
As shown in fig. 3, which is a schematic flow chart of a control method provided by an embodiment of the present application, the method of the present embodiment may include:
s301, determining power supply parameters of the electronic equipment in response to the target sound source signal.
The power supply parameter refers to a power supply parameter for supplying power to the electronic equipment.
For example, the power supply parameters may include a power supply voltage supported by the electronic device, a power supply current, and an overall resistance of the electronic device with respect to the power supply device, etc., without limitation,
taking the power supply of the electronic equipment by adopting the power adapter as an example, the power supply parameters such as the power supply voltage, the power supply current and the like input by the power adapter can be obtained.
S302, if the system power consumption of the electronic equipment is determined to be smaller than the corresponding power consumption threshold value based on the power supply parameter, the power amplifier is controlled to adjust the output power to the target output power.
The system power consumption of the electronic device refers to power loss generated by the whole electronic device. For example, the system power consumption P of the electronic device may be the product of the square of the supply current I of the electronic device and the overall resistance R, i.e. p=i 2 * R, or the ratio of the square of the supply voltage of the electronic device to the overall resistance, i.e. p=u 2 /R。
The power consumption threshold may be set based on the maximum power consumption that the electronic device can carry, for example, the power consumption threshold may be ninety percent of the maximum power consumption of the electronic device, which is not limited.
It can be understood that if the system power consumption of the electronic device exceeds the power consumption threshold, it is indicated that the system power consumption of the electronic device is higher, and it is not suitable to increase the power consumption of the audio output module in the electronic device; otherwise, if the system power consumption of the electronic device is lower than the power consumption threshold, the power consumption of the audio output module is increased, and the influence on the electronic device is relatively small, so that the output power which can be supported by the power amplifier can be controlled and adjusted to be the target output power.
In this embodiment, after the target sound source signal is obtained, the power supply parameter of the electronic device is determined as an example, and in practical application, the power supply parameter of the electronic device may be determined and the system power consumption of the electronic device may be determined before the target sound source signal is obtained. Accordingly, after the target sound source signal is obtained, only whether the target sound source signal is smaller than the power consumption threshold value is detected.
S303, processing the target sound source signal based on the target output power so as to drive a loudspeaker of the audio output module to output the audio content of the target sound source signal with peak power.
This step is referred to in the description of the previous embodiments and will not be described in detail here.
And S304, if the power supply information represents that the system power consumption of the electronic equipment is not smaller than the corresponding power consumption threshold value, controlling the power amplifier to maintain the current output power.
Wherein, maintaining the current output power of the power amplifier means not adjusting the set output power or the set rated power of the power amplifier.
If the rated power of the speaker is set to the rated power of the power amplifier, the rated power currently set by the power amplifier can be maintained unchanged in the case that the power consumption of the electronic device is not less than the corresponding power consumption threshold.
It can be understood that, as described above, the present application does not always drive the speaker to output the target sound source signal with the peak power, and may also comprehensively determine the duration of driving the speaker to output the target sound source signal with the peak power in combination with the application of the source of the target sound source signal and the current running state of the application.
The following description is provided in connection with several specific implementations:
in one possible implementation, in order to reasonably control the duration that the output power of the speaker can be at the peak power, the present application may also determine the maximum duration that the speaker can maintain operation at the peak power. On the basis, the application can control the power amplifier to input the target sound source signal to the loudspeaker of the audio output module at the target output power in the maximum time period, so that the loudspeaker can output the audio content of the target sound source signal at the peak power in the maximum time period.
There are also many possibilities for specific implementations in which the output power of the power amplifier is controlled to the target output power for this maximum period of time.
For example, the rated power of the power amplifier is set as the target output power, and the duration of the rated power of the power amplifier at the target output power is maintained as the maximum duration.
For another example, the rated power of the power amplifier is set as the target output power, and at the same time, before the target sound source signal is input to the power amplifier, an audio signal with the amplitude exceeding the set amplitude threshold value in the target sound source signal is determined, and the audio signal is processed into an audio signal with the signal duration smaller than the maximum duration that the loudspeaker can maintain working under the peak power.
It will be appreciated that the amplitude of the audio signal is related to the voltage of the audio signal, and that the higher the voltage of the audio signal, the higher the actual output power generated by the power amplifier processing the audio signal. Based on this, if the amplitude of the target sound source signal exceeds the amplitude threshold, in order to avoid that the duration of the power amplifier at the target output power exceeds the maximum duration that the speaker can continuously operate at the peak power, the present application may further process the target sound source signal into a target sound source signal having a signal duration less than the maximum duration, so that the duration of the power amplifier maintained at the target output power is less than the maximum duration.
The method for shortening the signal duration of the target sound source signal may be various, and is not limited thereto.
In another possible implementation manner, in order to reduce the damage caused by the fact that the speaker is at the peak power for a long time under the premise of controlling the power amplifier to have the target output power, the application can also adjust the amplitude parameter of the target sound source signal before the target sound source signal is input to the power amplifier, so that the actual output power of the power amplifier is the rated power of the speaker, and correspondingly, the power amplifier can drive the speaker to output the target sound source signal based on the rated power of the speaker.
The amplitude parameter of the target sound source signal is adjusted, so that the amplitude of the target sound source signal can be adjusted. As can be seen from the foregoing, the actual output power of the power amplifier is related to the amplitude of the input audio signal, so that by adjusting the amplitude parameter of the target audio signal, the actual output power of the power amplifier can be controlled to be the rated power of the speaker, which naturally enables the speaker to operate at the rated power, and the damage to the life of the speaker caused by the long-term maintenance of the speaker at the peak power is reduced.
The output power set by the power amplifier can reach the target rated power, so that the power amplifier has the capacity of driving the loudspeaker to work with peak power, namely, the power amplifier has the capacity of enabling the peak power of the loudspeaker to be in an audio signal, and therefore, the gain of a target sound source signal can still be effectively improved in the processing process of the target sound source signal. For example, for some signals with relatively low amplitude, the gain boost of the power amplifier with respect to the audio source signal can be increased due to the output power boost supported by the power amplifier.
Moreover, since the output power supported by the power amplifier can exceed the rated power of the loudspeaker, the situation that the power amplifier clips the target sound source signal with high amplitude is also reduced,
for example, in the process of adjusting the amplitude parameters of the target sound source signals, it may not be ensured that the amplitude parameters of all the target sound source signals are adjusted, so that after the target sound source signals with higher individual amplitude parameters are input into the power amplifier, the output power of the power amplifier may exceed the rated power of the loudspeaker, but the number of the target sound source signals is relatively small, so that the loudspeaker is not affected; however, since the output power supported by the power amplifier is increased, the clipping of the target audio source signal which is not adjusted with the reproduction parameters is reduced, so that the audio quality of the output of the loudspeaker is improved to the greatest extent.
The amplitude parameter of the target sound source signal may include: the voltage of the target sound source signal or the related parameter affecting the amplitude is not limited.
In the present application, various means for adjusting the amplitude parameter of the target audio signal may be used, for example, the amplitude parameter of the target audio signal may be adjusted by combining a dynamic range control (Dynamic Range Control, DRC) or an automatic gain control (Automatic Gain Control, AGC) technique.
The implementation manner of specifically adjusting the amplitude parameter of the target sound source signal may be various, so long as the actual output power of the power amplifier can be controlled as far as possible by adjusting the amplitude parameter of the target sound source signal, and the actual output power is still the rated power of the speaker, which is not limited.
For example, in one implementation, the present application may adjust the amplitude parameter of the target sound source signal based on the configuration information of the speaker and the configuration parameters of the power amplifier.
The configuration information of the speaker may be rated power, impedance information, etc. of the speaker, and the configuration parameters of the power amplifier may be amplification factor, other working parameters, etc. of the power amplifier, which are not limited.
By combining the configuration signals of the loudspeaker and the configuration parameters of the power amplifier, the conditions which are required to be met by the amplitude parameters of the target sound source signals when the actual output power of the power amplifier is the rated power of the loudspeaker can be reasonably determined, so that the amplitude parameters of the target sound source signals are reasonably adjusted.
Furthermore, in order to give consideration to the safety of the loudspeaker to the greatest extent, when the amplitude parameter of the target sound source signal is adjusted, the application can also adjust the trigger time required by triggering to adjust the amplitude parameter of the target sound source signal, so that the trigger time is shorter than the maximum time that the loudspeaker can continuously work under the peak power.
In order to facilitate understanding, the following description of the present application will be presented with a specific implementation.
As shown in fig. 4, which is a schematic flow chart of a control method provided by an embodiment of the present application, the method of the present embodiment may be applied to an electronic device, and the method of the present embodiment may include:
s401, application information of an electronic device running application is obtained.
S402, responding to a target sound source signal generated by at least one application in a target white list, determining the peak power of a loudspeaker of an audio output module and the maximum duration of continuous operation of the loudspeaker under the peak power, and configuring the peak power as the target output power of the power amplifier.
As can be seen from the foregoing description, in the case where the electronic device runs the application from the target white list, if the application belonging to the target white list generates the audio signal, it is indicated that the electronic device is in the use scenario with a high requirement for audio quality, and at this time, the audio signal from the target white list is the target audio signal that needs to improve audio quality.
Of course, this embodiment is described for the sake of understanding by taking one implementation manner of obtaining the target sound source signal as an example, and the foregoing implementation manner of the present application is equally applicable to this embodiment, which is not limited thereto.
The peak power of the speaker and the maximum duration that the speaker can continuously work under the peak power can be tested in advance and stored in the electronic device before the electronic device leaves the factory, and of course, other manners can be used for determining, and the method is not limited.
It will be appreciated that the present embodiment may also determine the system power consumption of the electronic device before configuring the peak power of the speaker to be the target output power of the power amplifier. Accordingly, the operation of configuring the peak power to be the target output power of the power amplifier may be performed only when the system function of the electronic device is smaller than the set power consumption threshold, which is specifically described above and will not be described herein.
In the present application, there are various possible specific implementations of configuring the peak power of the speaker to the target output power of the power amplifier, and the following are exemplified by two implementations:
in one possible implementation, the gain value of the power amplifier may be adjusted to a target gain value that matches the peak power.
For example, the gain value of the power amplifier can be set in the gain register corresponding to the power amplifier, and when the gain value of the power amplifier is different, parameters such as the amplification factor of the power amplifier for signals and the like are also different, and correspondingly, the output power of the power amplifier is also different. Based on the above, the application can pre-configure the output power of the power amplifier corresponding to different gain values, and based on the output power, the target gain value required to make the output power of the power amplifier be the peak power of the loudspeaker can be determined.
It can be seen that by adjusting the gain value of the power amplifier to the target gain value, the power amplifier can be made to adjust its rated power to the peak power of the speaker, so that the power amplifier can perform sound source signal processing based on the peak power.
In the above implementation, after adjusting the gain value of the power amplifier, the amplification factor of the power amplifier to the input audio signal will increase, but if noise exists in the audio signal, the noise will be synchronously amplified by a corresponding multiple, and noise interference may be introduced.
In order to reduce the risk of noise being amplified, in a further possible implementation, it may also be determined first that the output power of the power amplifier adjusts to the peak power, which power amplifier amplifies the target magnification of the input audio signal.
On the basis, based on the target amplification factor, the signal division factor of the voltage division circuit at the front end of the audio amplification module can be adjusted, so that the output power which can be supported by the power amplifier is the peak power of the loudspeaker, and the rated power of the power amplifier is adjusted to the peak power of the loudspeaker.
As shown in fig. 5, a voltage dividing circuit 502 is connected to the power amplifier 501, and the voltage dividing circuit includes at least one target resistor with adjustable circuit. Fig. 5 is merely an example, and the present application is not limited to a specific composition architecture of the voltage dividing circuit.
The voltage division multiple of the signal of the voltage division circuit can be adjusted by adjusting the resistance value of the target resistor.
It can be understood that, in the case that the amplification factor of the audio signal by the power amplifier is unchanged, by increasing the signal division multiple corresponding to the audio signal output by the voltage division circuit, the amplification factor of the audio signal which is finally processed by the voltage division circuit and the power amplifier can be increased.
For example, for one audio signal, the voltage division circuit divides the voltage of the audio signal into 1/2 of the original voltage, and the audio signal is amplified by 10 times by the power amplifier assuming that the voltage of the audio signal output by each voltage division circuit is 1V, and the power of the audio signal output by the power amplifier is 3w.
If the voltage division multiple of the voltage division circuit is adjusted to be 2 times of the original voltage division multiple, the voltage of the audio signal obtained by dividing the audio signal by the voltage division circuit is 2V, and the amplification multiple of the power amplifier is unchanged, after the power amplifier amplifies the audio signal by 10 times, the power of the audio signal output by the power amplifier is 6w, so that the output power of the power amplifier is also improved to be twice of the original power.
However, since the amplification factor of the power amplifier is not increased, the power amplifier does not amplify the noise signal much.
It should be understood that the above is described by taking two implementations of boosting the output power of the power amplifier as an example, and other ways of controlling the output power of the power amplifier to be boosted to the peak power of the speaker are also applicable to the present embodiment, which is not limited thereto.
S403, adjusting the amplitude parameter of the target sound source signal so that the actual output power of the power amplifier is the rated power of the loudspeaker.
It will be appreciated that the power rating of the speaker, i.e. the power amplifier default power rating.
The purpose of adjusting the amplitude parameter of the target sound source signal is to make the amplitude of the adjusted target sound source signal not exceed the target amplitude, so that the actual output power of the power amplifier is the rated power of the loudspeaker when the power amplifier processes the target sound source signal.
Accordingly, the target amplitude may be a maximum signal amplitude of the sound source signal corresponding to the rated power of the speaker so that the actual output power of the power amplifier does not exceed the rated power.
For example, the amplitude of the target audio source signal may be a voltage amplitude, and then the target amplitude may be a target voltage amplitude, and then the target voltage amplitude is a maximum voltage amplitude of the audio signal corresponding to the rated power of the speaker, which is not exceeded by the actual output power of the power amplifier when the power amplifier processes the audio signal.
In one possible implementation, it may be determined that the amplitude of the target sound source signal exceeds the target amplitude, and if the amplitude of the target sound source signal exceeds the target amplitude, the amplitude parameter of the target sound source signal is adjusted.
Of course, if the amplitude of the target sound source signal exceeds the target amplitude, the amplitude parameter of the target sound source signal may be maintained unchanged.
S404, if the amplitude of the target sound source signal after the amplitude parameter adjustment exceeds the target amplitude, and the pulse duration of the target sound source signal exceeds the maximum duration, adjusting the pulse duration of the target sound source signal to be not more than the maximum duration.
It can be understood that by adjusting the amplitude of the target sound source signal, the amplitude of the target sound source signal with larger amplitude can be reduced in practice, and on the basis, the actual output power generated by the power amplifier processing the target sound source signal with the adjusted amplitude can be maintained within the rated power of the loudspeaker.
However, in the process of adjusting the amplitude parameter of the target sound source signal, since a certain time is required for adjusting the amplitude parameter of the target sound source signal, there is often a possibility that some of the target sound source signals are not adjusted in amplitude. Based on the above, in order to further reduce the situation that the actual output power of the power amplifier exceeds the rated power of the loudspeaker, the application can also process the target sound source signal with the amplitude exceeding the target amplitude on the basis of adjusting the amplitude of the target sound source signal so as to reduce the continuous pulse duration of the target sound source signal.
It will be appreciated that if the amplitude of the target sound source signal exceeds the target amplitude, the actual output power generated by the subsequent power amplifier processing the target sound source signal will exceed the rated power of the loudspeaker, and it may be possible to achieve that the actual output power of the power amplifier reaches the set peak power.
The longer the pulse duration of the target sound source signal is, the longer the actual output power of the power amplifier exceeds the rated power, i.e. the longer the possible time the actual power of the power amplifier can reach the peak power is. Based on the above, in order to avoid the influence on the safety of the loudspeaker caused by the fact that the loudspeaker is in the peak power state for a long time, the pulse duration of the target sound source signal can be reduced, so that the duration that the actual output power of the power amplifier can reach the peak power is smaller than the maximum duration that the loudspeaker can be in the peak power.
Of course, this step S404 is an optional step, and in practical applications, if the previous step S404 is not considered to be possible to have the amplitude parameter adjustment of the target sound source signal omitted, this step S405 may not be executed.
And S405, inputting the processed target sound source signal to a power amplifier, so that the power amplifier processes the target sound source signal based on the peak power, and driving a loudspeaker to output the target sound source signal processed by the power amplifier.
It can be appreciated that the actual output power of the power amplifier can be maintained at the rated power through steps S403 and S404, or the duration that the actual output power of the power amplifier reaches the peak power is controlled to be less than the maximum duration that the speaker can be under the peak power, so as to improve the safety of the speaker.
The power amplifier can amplify the target sound source signal according to the target output power supported by the power amplifier, and the target output power supported by the power amplifier is the peak power of the loudspeaker, so that the power amplifier can amplify the target sound source signal based on the peak power, the gain of some signals with relatively smaller amplitude can be effectively improved, the situation of signals needing clipping can be reduced, and the quality of audio signals output by the loudspeaker can be naturally improved.
To facilitate an intuitive understanding of the benefits of the inventive arrangements, reference may be made to fig. 6 and 7.
Fig. 6 shows a schematic waveform of an audio signal that can be output by the present power amplifier, and fig. 7 shows a schematic waveform of an audio signal that can be output by the power amplifier according to the present application.
The two horizontal lines in fig. 6 and 7 represent amplitude reference lines without clipping processing on the premise that the output power of the power amplifier is the rated power of the speaker.
For fig. 6, since the scheme of the present application is not adopted, the output power of the power amplifier is the rated power of the speaker, and thus, if the amplitude of the audio signal inputted into the power amplifier exceeds the amplitude reference line, the audio signal is clipped. But also some audio signals can be amplified to a limited degree.
Accordingly, as can be seen from fig. 6, in the conventional scheme, the audio signal that the power amplifier can output can be only the audio signal whose amplitude is within the amplitude reference line.
In fig. 7, after the scheme of the application is adopted, the output power of the power amplifier can reach the peak power of the loudspeaker, so that the audio signal can be amplified by multiple times, and some high-amplitude signals cannot be clipped even if exceeding the amplitude reference line corresponding to the original rated power, thereby improving the quality of the audio signal output by the final loudspeaker.
Moreover, for the same target sound source signal, the advantages of the scheme can be obviously seen through actual test comparison:
Before the scheme of the application is adopted, the rated power of the loudspeaker is 3W, the output power of the set power amplifier is also 3W, and the loudness of the audio output by the electronic equipment is 74db.
After the scheme of the application is adopted, the output power of the power amplifier can be set to be 6W of the peak power of the loudspeaker, and on the basis, the loudness of the output audio of the electronic equipment can be improved to 77db under the condition that the actual output power of the power amplifier is maintained to be 3W of rated power by processing the target audio source signal, namely the loudness is improved by 3db, namely the common name volume is doubled.
In any one of the above embodiments of the present application, the present application may further output target prompt information to prompt a user to adjust a target sound source signal to be output, when the amplitude parameter of the target sound source signal exceeds the amplitude threshold.
The amplitude threshold may be an amplitude threshold corresponding to the maximum volume value, or the like, or an amplitude threshold corresponding to the audio that is considered suitable for the user to listen.
For example, when the amplitude parameter of the target sound source signal exceeds the amplitude threshold value, the volume set by the user is overlarge, and based on the amplitude parameter, the target prompt information can prompt the user to reduce the volume output.
In the above control method of the present application, the electronic device may further be configured to link a plurality of audio output modules. Correspondingly, under the condition that the electronic equipment is configured and connected with a plurality of audio output modules, the target audio output module can be determined based on the signal parameters of the target audio source signals and the configuration parameters of the audio output modules so as to output the target audio source signals through the target audio output module, wherein the target audio output module is unique or non-unique.
The configuration parameters of the audio output module may be rated power, peak power, maximum duration of normal operation maintained at the peak power, etc. of the speaker in the audio output module, which is not limited.
On the basis, the application determines the quality requirement of the sound source signal based on the application of the target sound source signal source and the like, and determines one or more target audio output modules by combining the configuration parameters of the audio output modules.
Corresponding to a control method of the application, the application also provides a control device.
As shown in fig. 8, which is a schematic diagram illustrating a composition structure of a control device according to an embodiment of the present application, the device according to the present embodiment may include:
A power control unit 801 for controlling a power amplifier of the audio output module to have a target output power in response to obtaining a target sound source signal;
the signal processing unit 802 is configured to process the target sound source signal based on the target output power, so as to drive a speaker of the audio output module to output the audio content of the target sound source signal with peak power.
In one possible implementation, the apparatus further includes: a signal obtaining unit for obtaining a target sound source signal by at least one of the following means:
acquiring application information of running applications of electronic equipment, determining a sound source signal generated by at least one application in a target list as the target sound source signal, wherein the audio output module is assembled on the electronic equipment, or a target communication connection is established between the audio output module and the electronic equipment;
monitoring a sound source signal input to the audio output module, and determining the sound source signal with the target signal parameter as the target sound source signal;
identifying a sound source signal input to the audio output module, and determining the sound source signal carrying target audio content as the target sound source signal;
Identifying identification information carried by the sound source signals input to the audio output module, and determining the sound source signals carrying the target identification information as the target sound source signals.
In yet another possible implementation, the power control unit includes at least one of:
a first power control unit for determining peak power of a speaker of an audio output module in response to obtaining a target sound source signal, and configuring the peak power as a target output power of the power amplifier;
and the second power control unit is used for responding to the obtained target sound source signal, determining the peak power of a loudspeaker of the audio output module, and controlling the power amplifier to have target output power based on the peak power and identification information carried by the target sound source signal, wherein the target output power is not greater than the peak power.
In yet another possible implementation, the apparatus further includes:
a parameter determining unit for determining a power supply parameter of the electronic device;
and the power maintenance unit is used for controlling the power amplifier to maintain the current output power of the power amplifier if the power supply information characterizes that the system power consumption of the electronic equipment is not smaller than the corresponding power consumption threshold value.
The power control unit is specifically used for responding to a target sound source signal, and controlling the power amplifier to adjust the output power of the power amplifier to the target output power if the system power consumption of the electronic equipment is determined to be smaller than a corresponding power consumption threshold value based on the power supply parameter;
in yet another possible implementation, the signal processing unit includes:
and the signal processing subunit is used for determining the maximum duration that the loudspeaker can continuously work under the peak power, and controlling the power amplifier to input the target sound source signal to the loudspeaker of the audio output module at the target output power within the maximum duration so that the loudspeaker can output the audio content of the target sound source signal at the peak power within the maximum duration.
In yet another possible implementation, the apparatus further includes:
and the amplitude adjustment unit is used for adjusting the amplitude parameter of the target sound source signal so that the actual output power of the power amplifier is the rated power of the loudspeaker, and driving the loudspeaker to output the target sound source signal based on the rated power.
Further, the amplitude adjusting unit includes:
And the amplitude adjustment subunit is used for adjusting the amplitude parameter of the target sound source signal based on the configuration information of the loudspeaker and the configuration parameter of the power amplifier.
Further, the device further comprises:
and the amplitude adjustment control unit is used for adjusting the trigger duration required by triggering to adjust the amplitude parameter of the target sound source signal so that the trigger duration is shorter than the maximum duration of continuous operation of the loudspeaker under the peak power.
In yet another possible implementation, the apparatus further includes at least one of:
the prompt output unit is used for outputting target prompt information to prompt a user to adjust the target sound source signal to be output under the condition that the amplitude parameter of the target sound source signal exceeds an amplitude threshold value;
and the module determining unit is used for determining a target audio output module based on the signal parameters of the target audio source signals and the configuration parameters of the audio output modules under the condition that the electronic equipment is configured and connected with a plurality of audio output modules so as to output the target audio source signals through the target audio output module, wherein the target audio output module is unique or non-unique.
In yet another aspect, the present application further provides an electronic device, as shown in fig. 9, which shows a schematic structural diagram of the electronic device, where the electronic device may be any type of electronic device, and the electronic device includes at least a processor 901 and a memory 902.
The electronic device may also be configured with an audio output module 903 connected thereto.
The audio output module 903 includes at least a power amplifier and a speaker (not shown in fig. 9).
Of course, fig. 9 is an example of an audio output module built in the electronic device, and is also applicable to a case where the electronic device is externally connected with the audio output module, which is not described herein again.
Wherein the processor 901 is configured to execute the control method in any one of the above embodiments.
The memory 902 is used to store programs needed for the processor to perform operations.
Of course, the electronic device may also have more or fewer components than in fig. 9, without limitation.
In another aspect, the present application also provides a computer readable storage medium having stored therein at least one instruction, at least one program, a set of codes, or a set of instructions, the at least one instruction, the at least one program, the set of codes, or the set of instructions being loaded and executed by a processor to implement a control method as described in any one of the embodiments above.
The present application also proposes a computer program comprising computer instructions stored in a computer readable storage medium. The computer program is for executing the control method in any one of the embodiments above when running on an electronic device.
It is to be understood that, in the present application, the terms "first," "second," "third," "fourth," and the like in the description and in the claims and the above figures, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the application described herein may be implemented in other sequences than those illustrated herein.
It should be noted that, in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described as different from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other. Meanwhile, the features described in the embodiments in the present specification may be replaced with or combined with each other to enable those skilled in the art to make or use the present application. For the apparatus class embodiments, the description is relatively simple as it is substantially similar to the method embodiments, and reference is made to the description of the method embodiments for relevant points.
Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
The foregoing is merely a preferred embodiment of the present application and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present application, which are intended to be comprehended within the scope of the present application.
Claims (10)
1. A control method, comprising:
in response to obtaining the target sound source signal, controlling a power amplifier of the audio output module to have a target output power;
and processing the target sound source signal based on the target output power so as to drive a loudspeaker of the audio output module to output the audio content of the target sound source signal with peak power.
2. The control method according to claim 1, wherein obtaining the target sound source signal includes at least one of:
acquiring application information of running applications of electronic equipment, determining a sound source signal generated by at least one application in a target list as the target sound source signal, wherein the audio output module is assembled on the electronic equipment, or a target communication connection is established between the audio output module and the electronic equipment;
monitoring a sound source signal input to the audio output module, and determining the sound source signal with the target signal parameter as the target sound source signal;
Identifying a sound source signal input to the audio output module, and determining the sound source signal carrying target audio content as the target sound source signal;
identifying identification information carried by the sound source signals input to the audio output module, and determining the sound source signals carrying the target identification information as the target sound source signals.
3. The control method of claim 1, wherein controlling the power amplifier of the audio output module to have the target output power comprises at least one of:
determining peak power of a loudspeaker of an audio output module, and configuring the peak power as target output power of the power amplifier;
and determining the peak power of a loudspeaker of the audio output module, and controlling the power amplifier to have target output power based on the peak power and the identification information carried by the target sound source signal, wherein the target output power is not greater than the peak power.
4. The control method according to claim 1, further comprising:
determining power supply parameters of the electronic equipment;
if the system power consumption of the electronic equipment is determined to be smaller than the corresponding power consumption threshold value based on the power supply parameter, controlling the power amplifier to adjust the output power of the power amplifier to the target output power;
And if the power supply information characterizes that the system power consumption of the electronic equipment is not smaller than the corresponding power consumption threshold value, controlling the power amplifier to maintain the current output power of the power amplifier.
5. The control method according to claim 1, wherein driving the speaker of the audio output module to output the audio content of the target sound source signal at peak power comprises:
determining the maximum duration that the loudspeaker can continuously work under the peak power, and controlling the power amplifier to input the target sound source signal to the loudspeaker of the audio output module at the target output power within the maximum duration so that the loudspeaker can output the audio content of the target sound source signal at the peak power within the maximum duration.
6. The control method according to claim 1 or 5, further comprising:
and adjusting the amplitude parameter of the target sound source signal so that the actual output power of the power amplifier is the rated power of a loudspeaker, and driving the loudspeaker to output the target sound source signal based on the rated power.
7. The control method according to claim 6, wherein the adjusting the amplitude parameter of the target sound source signal includes:
And adjusting the amplitude parameter of the target sound source signal based on the configuration information of the loudspeaker and the configuration parameter of the power amplifier.
8. The control method according to claim 7, further comprising:
and adjusting the trigger time length required by the trigger to adjust the amplitude parameter of the target sound source signal so that the trigger time length is shorter than the maximum time length of the loudspeaker which can continuously work under the peak power.
9. The control method of claim 1, further comprising at least one of:
outputting target prompt information to prompt a user to adjust the target sound source signal to be output under the condition that the amplitude parameter of the target sound source signal exceeds an amplitude threshold value;
under the condition that the electronic equipment is configured and connected with a plurality of audio output modules, determining a target audio output module based on the signal parameters of the target audio source signals and the configuration parameters of the audio output modules so as to output the target audio source signals through the target audio output module, wherein the target audio output module is unique or non-unique.
10. A control apparatus comprising:
a power control unit for controlling the power amplifier of the audio output module to have a target output power in response to obtaining the target sound source signal;
And the signal processing unit is used for processing the target sound source signal based on the target output power so as to drive a loudspeaker of the audio output module to output the audio content of the target sound source signal with peak power.
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