CN106101933B - Volume adjusting method and device of power amplifier system - Google Patents
Volume adjusting method and device of power amplifier system Download PDFInfo
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- CN106101933B CN106101933B CN201610548716.4A CN201610548716A CN106101933B CN 106101933 B CN106101933 B CN 106101933B CN 201610548716 A CN201610548716 A CN 201610548716A CN 106101933 B CN106101933 B CN 106101933B
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2430/00—Signal processing covered by H04R, not provided for in its groups
- H04R2430/01—Aspects of volume control, not necessarily automatic, in sound systems
Abstract
The invention discloses a volume adjusting method and a device of a power amplifier system; the power amplification system comprises a power amplification module for performing power amplification processing on the received audio signal, a power supply module for providing working voltage for the power amplification module and a volume control module for outputting a volume control signal; the volume adjusting method of the power amplification system comprises the following steps: detecting whether a volume control module outputs a volume control signal for adjusting the volume value of the power amplification system or not; if the volume control signal is detected, the power supply module is controlled to output power supply voltage matched with the volume control signal, so that the volume value of the power amplification system corresponds to the volume control signal. The technical scheme of the invention can improve the efficiency of the power amplifier system.
Description
Technical Field
The invention relates to the technical field of audio processing, in particular to a volume adjusting method and device of a power amplifier system.
Background
The power amplification system (power amplification system for short) in the sound equipment comprises a power supply, a power amplification circuit and a volume control module; the power supply is used for providing working voltage for the power amplification circuit, the power amplification circuit is used for amplifying the power (amplitude) of the audio signal so as to push the loudspeaker to produce sound, and the volume control module is used for outputting a volume control signal.
During the operation of the sound equipment, users often adjust the volume of the loudspeaker according to personal preferences. The existing volume adjusting device adjusts the volume of the loudspeaker by adopting a mode of adjusting the amplitude of the volume component of the audio signal input to the power amplifying circuit according to the volume control signal.
Although the volume adjusting device can realize that the loudspeaker is pushed to output without distortion under the maximum volume of the audio signal, the output power of the power amplifying circuit is reduced along with the volume adjusting device in the process of reducing the volume of the audio signal, and the power supply voltage is kept unchanged. Thus, when the sound volume is decreased, the input power of the power amplifying circuit is not changed, and the output power is decreased, thereby decreasing the efficiency.
Disclosure of Invention
The invention mainly aims to provide a volume adjusting method of a power amplification system, aiming at improving the efficiency of the power amplification system.
In order to achieve the above object, the present invention provides a volume adjusting method of a power amplifier system, wherein the power amplifier system comprises a power amplifier module for performing power amplification processing on a received audio signal, a power supply module for providing a working voltage for the power amplifier module, and a volume control module for outputting a volume control signal; the volume adjusting method of the power amplifier system comprises the following steps:
detecting whether the volume control module outputs a volume control signal for adjusting the volume value of the power amplification system or not;
and if the volume control signal is detected, controlling the power supply module to output a power supply voltage matched with the volume control signal so as to enable the volume value of the power amplification system to be the volume value regulated by the volume control signal.
Preferably, the controlling the power module to output the power voltage matched with the volume control signal includes:
judging whether the volume value adjusted by the volume control signal is within a preset range;
and if the volume value adjusted by the volume control signal is within the preset range, controlling the power supply module to output power supply voltage corresponding to the adjusted volume value.
Preferably, the power amplifier system further comprises an audio processing module for adjusting the received audio signal according to the received volume control signal; the controlling the power supply module to output the power supply voltage matched with the volume control signal further comprises:
and when the volume value adjusted by the volume control signal is within the preset range, controlling the audio processing module not to respond to the volume control signal.
Preferably, the controlling the power supply module to output the power supply voltage matched with the volume control signal further includes:
and when the volume value adjusted by the volume control signal is not in the preset range and is greater than all values in the preset range, controlling the power supply module to output the maximum working voltage corresponding to the power amplifier module, and controlling the audio processing module to respond to the received audio control signal so as to enable the volume value of the power amplifier system to be the volume value adjusted by the volume control signal.
Preferably, the controlling the power supply module to output the power supply voltage matched with the volume control signal further includes:
and when the volume value adjusted by the volume control signal is not in the preset range and is smaller than all values in the preset range, controlling the power supply module to output the minimum working voltage corresponding to the power amplification module, and controlling the audio processing module to respond to the received audio control signal so as to enable the volume value of the power amplification system to be the volume value adjusted by the volume control signal.
Correspondingly, the invention also provides a volume adjusting device of the power amplifier system, wherein the power amplifier system comprises a power amplifier module for carrying out power amplification processing on the received audio signal, a power supply module for providing working voltage for the power amplifier module and a volume control module for outputting a volume control signal; the volume adjusting device of the power amplification system comprises a detection module and a power supply control module;
the detection module is used for detecting whether the volume control module outputs a volume control signal for adjusting the volume value of the power amplification system or not;
and the power supply control module is used for controlling the power supply module to output power supply voltage matched with the volume control signal when the volume control signal is detected, so that the volume value of the power amplification system is the volume value regulated by the volume control signal.
Preferably, the power control module comprises a first judging unit and a first power control unit;
the first judging unit is used for judging whether the volume value adjusted by the volume control signal is within a preset range;
the first power control unit is configured to control the power module to output a power voltage corresponding to the adjusted volume value when the volume value adjusted by the volume control signal is within the preset range, so that the volume value of the power amplifier system is the volume value adjusted by the volume control signal.
Preferably, the power amplifier system further comprises an audio processing module for adjusting the received audio signal according to the received volume control signal; the power supply control module also comprises a switch control unit;
the switch control unit is used for controlling the audio processing module not to respond to the received volume control signal when the volume value adjusted by the volume control signal is within the preset range; and when the volume value adjusted by the volume control signal is not in the preset range, controlling the audio processing module to respond to the received volume control signal so as to enable the volume value of the power amplification system to be the volume value adjusted by the volume control signal.
Preferably, the power control module further comprises a second power control unit and a third power control unit;
the second power supply control unit is used for controlling the power supply module to output the maximum working voltage corresponding to the power amplification module when the detection value corresponding to the detection signal is not in the preset range and is greater than all values in the preset range;
and the third power supply control unit is used for controlling the power supply module to output the minimum working voltage corresponding to the power amplification module when the detection value corresponding to the detection signal is not in the preset range and is smaller than all values in the preset range.
According to the technical scheme, the volume of the loudspeaker is adjusted by adopting a mode of controlling the power supply voltage of the power module in the power amplification system to output a corresponding magnitude according to the magnitude of the volume control signal. When the volume value adjusted by the volume control signal is reduced, the situation that the input power of the power amplification circuit is unchanged and the output power is reduced can occur due to the adoption of the technical scheme in the prior art, and the situation that the input power of the power amplification module is reduced and the output power is also reduced can occur due to the adoption of the technical scheme in the invention. Therefore, compared with the prior art, the technical scheme of the invention improves the efficiency of the power amplifier system.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic flow chart of a method for adjusting the volume of a power amplifier system according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of another embodiment of a volume adjustment method of a power amplification system according to the present invention;
fig. 3 is a schematic functional block diagram of an embodiment of a volume adjustment apparatus of a power amplifier system according to the present invention;
fig. 4 is a functional block diagram of an embodiment of the power control module in fig. 3.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a volume adjusting method of a power amplification system. The power amplification system comprises a power amplification module for performing power amplification processing on the received audio signal, a power module for providing working voltage for the power amplification module and a volume control module for outputting a volume control signal.
In an embodiment, the volume adjustment method of the power amplifier system includes:
s100, detecting whether the volume control module outputs a volume control signal for adjusting the volume value of the power amplification system or not;
the volume control module may be a knob or a remote controller. When the volume control module is an adjustable knob, the volume value corresponding to the volume control signal is continuous, and when the volume control module is a remote controller, the volume value corresponding to the volume control signal can be continuous or discontinuous, and the change mode of the volume value corresponding to the volume control signal is not limited.
S200, if the volume control signal is detected, the power supply module is controlled to output power supply voltage matched with the volume control signal, so that the volume value of the power amplification system is the volume value adjusted by the volume control signal.
The size of the power supply voltage output by the power supply module can be changed by controlling the duty ratio of the power supply voltage output by the power supply module; the power supply voltage of the power amplifier module can also be changed by controlling the voltage division value of the power amplifier module, and the power supply voltage is not limited here.
When the volume control module outputs the volume control signal, the volume value adjusted by the volume control signal output by the volume control module is detected. And then, the magnitude of the power supply voltage output by the power supply module is controlled according to the magnitude of the volume value regulated by the volume control signal, so that the power amplification factor of the power amplification module is matched with the volume value corresponding to the volume control signal, and the purpose of regulating the volume of the power amplification system is achieved. It is worth mentioning that in the process that the volume value regulated by the volume control signal is changed from small to large, the power supply voltage output by the power supply module is correspondingly increased; and in the process that the volume value regulated by the volume control signal is changed from big to small, the power supply voltage output by the power supply module is correspondingly reduced.
According to the technical scheme, the volume of the loudspeaker is adjusted by adopting a mode of controlling the power supply voltage of the power module in the power amplification system to output a corresponding magnitude according to the volume value adjusted by the volume control signal. When the volume value adjusted by the volume control signal is reduced, the situation that the input power of the power amplification circuit is unchanged and the output power is reduced can occur due to the adoption of the prior art, and the situation that the input power of the power amplification module is reduced and the output power is also reduced can occur due to the adoption of the technical scheme of the invention. Therefore, compared with the prior art, the technical scheme of the invention improves the efficiency of the power amplifier system.
In a preferred embodiment, controlling the power supply module to output a power supply voltage matched to the volume control signal includes:
s210, judging whether the volume value regulated by the volume control signal is within a preset range;
the volume value adjusted by the volume control signal may be continuous or discrete.
The first volume and the second volume threshold may be preset if the volume value adjusted by the volume control signal is continuous. When the volume value adjusted by the volume control signal is detected to be between the first volume threshold and the second volume threshold, the volume value adjusted by the current volume control signal is in a preset range; when the volume value adjusted by the volume control signal is detected not to be between the first threshold value and the second threshold value, the volume value adjusted by the current volume control signal is not in the preset range. The first volume threshold is the maximum volume value within a preset range, and the second volume threshold is the minimum volume value within the preset range.
If the volume value adjusted by the volume control signal is discrete, the volume value table may be preset. When the detected volume value adjusted by the volume control signal can be searched in the volume value table, the volume value adjusted by the current volume control signal is in a preset range; when the detected volume value adjusted by the volume control signal cannot be searched in the volume value table, it indicates that the volume value adjusted by the current volume control signal is not in the preset range.
And S220, if the volume value adjusted by the volume control signal is within a preset range, controlling the power supply module to output a power supply voltage corresponding to the adjusted volume value.
When the volume value adjusted by the current volume control signal is judged, whether the volume value adjusted by the current volume control signal is in a preset range can be judged by searching whether a preset volume value which is the same as or similar to the volume value adjusted by the current volume control signal exists. The volume value adjusted by the current volume control signal may also be compared with the upper limit value and the lower limit value of the preset volume value to determine whether the volume value adjusted by the current volume control signal is within the preset range, which is not limited herein.
It can be understood that, on one hand, in the process of reducing the volume value adjusted by the volume control signal, the power supply voltage output by the power supply module is correspondingly reduced, and when the volume value adjusted by the volume control signal is reduced to a certain degree, the power supply voltage output by the power supply module may not start the power amplifier module. On the other hand, in the process that the volume value regulated by the volume control signal is increased, the power supply voltage output by the power supply module is correspondingly increased, and when the volume value regulated by the volume control signal is increased to the maximum value, the power amplification multiple of the power amplification module is maximum. However, since the audio signal input to the power amplifier module is not amplified, the volume value output by the power amplifier module under the condition is smaller than the volume value adjusted by the current volume control signal.
Therefore, whether the volume value adjusted by the volume control signal is within a preset range is judged; and when the volume value adjusted by the volume control signal is within the preset range, the power supply module is controlled to output power supply voltage with corresponding magnitude, so that the situation that the power supply control module responds to a too-small or too-large volume control signal can be avoided, and further, the occurrence of misoperation in the process of adjusting the volume of the power amplification system is avoided.
Furthermore, the power amplifier system also comprises an audio processing module for adjusting the received audio signal according to the received volume control signal; the above-mentioned power supply voltage that control power module output and volume control signal match still includes:
and S250, controlling the audio processing module not to respond to the received volume control signal when the volume value adjusted by the volume control signal is within a preset range.
It can be understood that, when the volume value adjusted by the volume control signal is within the preset range, it indicates that the adjustment of the output volume value of the power amplifier system can be realized by controlling the power supply module to output the power supply voltage matched with the volume control signal. At this time, if the audio processing module is controlled to respond to the received volume control signal, not only electric energy waste is caused, but also the volume value of the power amplifier system is disorderly adjusted.
In a preferred embodiment, the controlling the power supply module to output the power supply voltage matched with the volume control signal further includes:
and S260, when the volume value adjusted by the volume control signal is not in the preset range and is greater than all values in the preset range, controlling the power supply module to output the maximum working voltage corresponding to the power supply module, and controlling the audio processing module to respond to the received audio control signal, so that the volume value of the power amplification system is the volume value adjusted by the volume control signal.
When the detection value corresponding to the detection signal is not within the preset range and is greater than all values within the preset range, it is indicated that the volume value corresponding to the volume control signal is greater, and the power amplification factor required by the power amplification module is greater. And when the power supply module is controlled to output the maximum working voltage corresponding to the power amplifier module, the power amplification factor of the power amplifier module is maximum, and the system requirements are met.
In a preferred embodiment, the controlling the power supply module to output the power supply voltage matched with the volume control signal further includes:
and S270, when the volume value adjusted by the volume control signal is not in the preset range and is smaller than all values in the preset range, controlling the power supply module to output the minimum working voltage corresponding to the power amplifier module, and controlling the audio processing module to respond to the received audio control signal, so that the volume value of the power amplifier system is the volume value adjusted by the volume control signal.
When the detection value corresponding to the detection signal is not within the preset range and is smaller than all values within the preset range, it is indicated that the volume value corresponding to the volume control signal is smaller, and the power amplification factor required by the power amplification module is smaller. And when the power supply module is controlled to output the minimum working voltage corresponding to the power amplifier module, the power amplification factor of the power amplifier module is minimum, and the power amplifier module can work stably and meet the requirements of the system.
That is, when the volume value adjusted by the volume control signal is greater than all volume values within the preset range, the power supply module is controlled to output the maximum working voltage corresponding to the power amplifier module, and meanwhile, the audio processing module correspondingly adjusts the input audio signal according to the volume value adjusted by the current volume control signal, so that the volume of the loudspeaker corresponds to the volume value adjusted by the volume control signal. When the volume value adjusted by the volume control signal is smaller than all values in the preset range, the power supply module is controlled to output the minimum working voltage corresponding to the power amplifier module, and meanwhile, the audio processing module correspondingly adjusts the input audio signal according to the volume value adjusted by the current volume control signal, so that the volume of the loudspeaker corresponds to the volume value adjusted by the volume control signal. Thus, for each volume control signal, the power amplification system can output the volume value corresponding to the volume value adjusted by the volume control signal, thereby achieving the purpose of adjusting the output volume. And in the whole adjusting process, compared with the prior art, the efficiency of the power amplifier system is improved.
The invention also provides a volume adjusting device of the power amplifier system. The power amplification system comprises a power amplification module for performing power amplification processing on the received audio signal, a power module for providing working voltage for the power amplification module and a volume control module for outputting a volume control signal.
In an embodiment, the volume adjusting apparatus of the power amplifier system includes a detection module 100 and a power control module 200; the detection module 100 is configured to detect whether the volume control module outputs a volume control signal for adjusting a volume value of the power amplifier system; and the power control module 200 is configured to control the power module to output a power voltage matched with the volume control signal when the volume control signal is detected, so that the volume value of the power amplifier system is the volume value adjusted by the volume control signal.
The volume control module may be a knob or a remote controller. When the volume control module is an adjustable knob, the volume value adjusted by the volume control signal is continuous, and when the volume control module is a remote controller, the volume value adjusted by the volume control signal can be continuous or discrete, and the change mode of the volume value adjusted by the volume control signal is not limited. The detection module 100 may include an alignment table storing preset volume values corresponding to volume values adjusted by the volume control signals. The power control module 200 may include a PWM controller that changes the magnitude of the power voltage output by the power module by controlling the duty ratio of the power voltage output by the power module; the power amplifier module can also comprise a voltage divider, the voltage divider and the power amplifier module form a voltage dividing circuit, and for the volume value regulated by each volume control signal, the voltage divider can divide a corresponding power supply voltage, so that the power supply voltage of the power amplifier module is changed, and the power supply voltage is not limited here.
When the detection module 100 detects that the volume control module outputs the volume control signal, the power control module 200 correspondingly adjusts the power voltage according to the volume value adjusted by the current volume control signal, so that the power amplification factor of the power amplifier module corresponds to the volume value adjusted by the current volume control signal, thereby achieving the purpose of adjusting the volume of the power amplifier system. It is worth mentioning that in the process that the volume value regulated by the volume control signal is changed from small to large, the power supply voltage output by the power supply module is correspondingly increased; and in the process that the volume value regulated by the volume control signal is changed from big to small, the power supply voltage output by the power supply module is correspondingly reduced.
According to the technical scheme, the volume of the loudspeaker is adjusted by adopting a mode of controlling the power supply voltage of the power module in the power amplification system to output a corresponding magnitude according to the volume value adjusted by the volume control signal. When the volume value adjusted by the volume control signal is reduced, the situation that the input power of the power amplification circuit is unchanged and the output power is reduced can occur due to the adoption of the prior art, and the situation that the input power of the power amplification module is reduced and the output power is also reduced can occur due to the adoption of the technical scheme of the invention. Therefore, compared with the prior art, the technical scheme of the invention improves the efficiency of the power amplifier system.
In a preferred embodiment, the power control module 200 includes a first determining unit 210 and a first power control unit 220; the first determining unit 210 is configured to determine whether a volume value adjusted by the volume control signal is within a preset range; the first power control unit 220 is configured to control the power module to output a power voltage corresponding to the volume value adjusted by the volume control signal when the volume value adjusted by the volume control signal is within a preset range.
It should be noted that the first determining unit 210 may include a detection table, and the detection table stores preset values of detection values corresponding to the detection signals. When the first determining unit 210 is in the working state, if a preset volume value of the detection value that is the same as or similar to the volume value adjusted by the current volume control signal exists in the detection table, it is determined that the volume value adjusted by the current volume control signal is within the preset range. The first determining unit 210 may also include a comparator, and when the first determining unit 210 is in the working state, if the volume value adjusted by the current volume control signal is greater than the lower limit value of the comparator and less than the upper limit value of the comparator, it is determined that the volume value adjusted by the current volume control signal is within the preset range.
When the volume control signal is output from the volume control module, the first determining unit 210 determines whether the volume value adjusted by the current volume control signal is within a preset range, and if the volume value adjusted by the current volume control signal is within the preset range, the first power control unit 220 controls the power module to output a power voltage matched with the current volume control signal.
It can be understood that, on the one hand, in the process of reducing the volume value adjusted by the volume control signal, the power control module 200 controls the power voltage output by the power module to be correspondingly reduced, and when the volume value adjusted by the volume control signal is reduced to a certain degree, the power voltage output by the power module 200 may not turn on the power amplifier module. On the other hand, in the process of increasing the volume value adjusted by the volume control signal, the power control module 200 controls the power voltage output by the power module to increase correspondingly, and when the volume value adjusted by the volume control signal increases to the maximum value, the power amplification factor of the power amplification module is the maximum. However, since the audio signal input to the power amplifier module is not amplified, the volume output by the power amplifier module under the condition is smaller than the volume value corresponding to the preset volume control signal.
Therefore, the first determining unit 210 and the first power control unit 220 are arranged to prevent the power control module 200 from responding to the volume value adjusted by the too small or too large volume control signal, thereby avoiding the occurrence of malfunction during the process of adjusting the volume of the power amplifier system.
In a preferred embodiment, the power amplifier system further includes an audio processing module for adjusting the received audio signal according to the received volume control signal; the power control module further includes a switch control unit 250;
a switch control unit 250 for controlling the audio processing module not to respond to the received volume control signal when the volume adjusted by the volume control signal is within a preset range; and when the volume value adjusted by the volume control signal is not in the preset range, controlling the audio processing module to respond to the received volume control signal so as to enable the volume value of the power amplification system to be the volume value adjusted by the volume control signal.
It can be understood that, when the volume value adjusted by the volume control signal is within the preset range, it indicates that the adjustment of the output volume value of the power amplifier system can be realized by controlling the power supply module to output the power supply voltage matched with the volume control signal. At this time, if the audio processing module is controlled to respond to the received volume control signal, not only electric energy waste is caused, but also the volume value of the power amplifier system is disorderly adjusted.
When the volume value adjusted by the volume control signal is not in the preset range, the adjustment of the output volume value of the power amplification system cannot be realized by controlling the power supply module to output the power supply voltage matched with the volume control signal. At this time, the audio processing module is controlled to respond to the received volume control signal, so that the output volume value of the supplier system can be adjusted.
In a preferred embodiment, the power control module 200 further includes a second power control unit 260 and a third power control unit 270; the second power control unit 260 is configured to control the power module to output the maximum working voltage corresponding to the power amplifier module when a detection value corresponding to the detection signal is not within a preset range and is greater than all values within the preset range; and a third power control unit 270, configured to control the power module to output the minimum working voltage corresponding to the power amplifier module when the detection value corresponding to the detection signal is not within the preset range and is smaller than all values within the preset range.
It should be noted that the second power control unit 260 and/or the third power control unit 270 may be a voltage divider, a PWM controller, etc., and is not limited herein. In addition, when processing the detection value corresponding to the detection signal that is not within the preset range, it is also necessary to determine whether the detection value corresponding to the current detection signal is greater than all values within the preset range or less than all values within the preset range. Therefore, in this embodiment, the first determining unit 210 is further configured to determine whether the detection value of the detection signal is greater than all the preset values, or further determine whether the detection value of the detection signal is less than all the preset values, which is not limited herein.
That is, when the volume value adjusted by the volume control signal is greater than all values within the preset range, the second power control unit 260 controls the power module to output the maximum working voltage corresponding to the power amplifier module, and meanwhile, the audio processing module correspondingly adjusts the input audio signal according to the current volume control signal, so that the volume of the speaker corresponds to the volume value corresponding to the volume control signal. When the volume value adjusted by the volume control signal is smaller than all values within the preset range, the third power control unit 270 controls the power module to output the minimum working voltage corresponding to the power amplifier module, and meanwhile, the audio processing module correspondingly adjusts the input audio signal according to the current volume control signal, so that the volume of the loudspeaker corresponds to the volume value corresponding to the volume control signal. Therefore, the volume of the power amplification system can be adjusted for each volume control signal. And in the whole adjusting process, compared with the prior art, the efficiency of the power amplifier system is improved.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (4)
1. A power amplifier system comprises a power amplifier module for performing power amplification processing on a received audio signal, a power module for providing working voltage for the power amplifier module and a volume control module for outputting a volume control signal; the power amplifier system is characterized by further comprising an audio processing module for adjusting the received audio signal according to the received volume control signal; the method comprises the following steps:
detecting whether the volume control module outputs a volume control signal for adjusting the volume value of the power amplification system or not;
if the volume control signal is detected, controlling the power supply module to output a power supply voltage matched with the volume control signal so as to enable the volume value of the power amplification system to be the volume value regulated by the volume control signal,
wherein the controlling the power module to output a power voltage matched with the volume control signal comprises:
judging whether the volume value adjusted by the volume control signal is within a preset range;
if the volume value adjusted by the volume control signal is within the preset range, controlling the power supply module to output a power supply voltage corresponding to the adjusted volume value;
when the volume value adjusted by the volume control signal is not in a preset range and is larger than all values in the preset range, controlling the power supply module to output the maximum working voltage corresponding to the power amplification module, and controlling the audio processing module to respond to the received volume control signal so as to enable the volume value of the power amplification system to be the volume value adjusted by the volume control signal;
and when the volume value adjusted by the volume control signal is not in a preset range and is smaller than all values in the preset range, controlling the power supply module to output the minimum working voltage corresponding to the power amplification module, and controlling the audio processing module to respond to the received volume control signal so as to enable the volume value of the power amplification system to be the volume value adjusted by the volume control signal.
2. The method for adjusting the volume of a power amplifier system according to claim 1, wherein the controlling the power module to output the power voltage matched with the volume control signal further comprises:
and when the volume value adjusted by the volume control signal is within the preset range, controlling the audio processing module not to respond to the received volume control signal.
3. A volume adjusting device of a power amplifier system comprises a power amplifier module for carrying out power amplification processing on received audio signals, a power supply module for providing working voltage for the power amplifier module and a volume control module for outputting volume control signals; the volume adjusting device of the power amplification system is characterized by comprising a detection module and a power supply control module;
the detection module is used for detecting whether the volume control module outputs a volume control signal for adjusting the volume value of the power amplification system or not;
the power supply control module is used for controlling the power supply module to output power supply voltage matched with the volume control signal when the volume control signal is detected, so that the volume value of the power amplification system is the volume value regulated by the volume control signal;
the power supply control module comprises a first judgment unit, a first power supply control unit and a second power supply control unit;
the first judging unit is used for judging whether the volume value adjusted by the volume control signal is within a preset range;
the first power supply control unit is used for controlling the power supply module to output power supply voltage corresponding to the volume value adjusted by the volume control signal when the volume value adjusted by the volume control signal is within the preset range;
the second power supply control unit is used for controlling the power supply module to output the maximum working voltage corresponding to the power amplification module when the volume value adjusted by the volume control signal is not in the preset range and is greater than all values in the preset range;
the power amplifier system also comprises an audio processing module used for adjusting the received audio signal according to the received volume control signal; the power supply control module also comprises a switch control unit;
the switch control unit is used for controlling the audio processing module to respond to the received volume control signal when the volume value adjusted by the volume control signal is not in the preset range, so that the volume value of the power amplification system is the volume value adjusted by the volume control signal;
the power supply control module further comprises a second power supply control unit and a third power supply control unit;
the second power supply control unit is used for controlling the power supply module to output the maximum working voltage corresponding to the power amplification module when the volume value adjusted by the volume control signal is not in the preset range and is greater than all values in the preset range;
and the third power supply control unit is used for controlling the power supply module to output the minimum working voltage corresponding to the power amplifier module when the volume value adjusted by the volume control signal is not in the preset range and is smaller than all values in the preset range.
4. The volume adjusting device of a power amplifier system of claim 3,
and the switch control unit is used for controlling the audio processing module not to respond to the received volume control signal when the volume value adjusted by the volume control signal is within the preset range.
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| CN106878863A (en) * | 2017-03-03 | 2017-06-20 | 广东欧珀移动通信有限公司 | The voltage adjusting method of power supply and power amplification system and power amplification system |
| CN107948874A (en) * | 2017-11-28 | 2018-04-20 | 维沃移动通信有限公司 | A kind of terminal control method, mobile terminal |
| CN112420083B (en) * | 2020-10-23 | 2022-07-22 | 东风汽车股份有限公司 | Vehicle-mounted audio and video 12V and 24V power supply universal control system and method |
| CN114302298B (en) * | 2021-12-31 | 2023-07-21 | 联想(北京)有限公司 | Volume adjustment method and device, electronic equipment and storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101163215A (en) * | 2006-10-10 | 2008-04-16 | 康佳集团股份有限公司 | Method and apparatus for setting actual volume of television set |
| CN101809862A (en) * | 2007-08-03 | 2010-08-18 | 沃福森微电子股份有限公司 | Amplifier circuit |
| CN201608692U (en) * | 2010-02-08 | 2010-10-13 | 新昌有限公司 | Energy-saving power amplifying device |
| CN101990038A (en) * | 2010-12-02 | 2011-03-23 | 惠州Tcl移动通信有限公司 | Method for improving efficiency of audio power amplifier and mobile phone using the same |
| CN203038661U (en) * | 2012-12-26 | 2013-07-03 | 深圳市康冠技术有限公司 | Sound adjusting device and system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1638266A (en) * | 2003-12-16 | 2005-07-13 | 国际整流器公司 | Volume control in class D amplifier using variable supply voltage |
| KR100765790B1 (en) * | 2006-06-30 | 2007-10-12 | 삼성전자주식회사 | Method and apparatus for providing variable power in mobile device |
| US8126164B2 (en) * | 2006-11-29 | 2012-02-28 | Texas Instruments Incorporated | Digital compensation of analog volume control gain in a digital audio amplifier |
| TWI508436B (en) * | 2012-09-13 | 2015-11-11 | Wistron Corp | Voltage supply circuit, audio output apparatus and voltage supplying method |
-
2016
- 2016-07-11 CN CN201610548716.4A patent/CN106101933B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101163215A (en) * | 2006-10-10 | 2008-04-16 | 康佳集团股份有限公司 | Method and apparatus for setting actual volume of television set |
| CN101809862A (en) * | 2007-08-03 | 2010-08-18 | 沃福森微电子股份有限公司 | Amplifier circuit |
| CN201608692U (en) * | 2010-02-08 | 2010-10-13 | 新昌有限公司 | Energy-saving power amplifying device |
| CN101990038A (en) * | 2010-12-02 | 2011-03-23 | 惠州Tcl移动通信有限公司 | Method for improving efficiency of audio power amplifier and mobile phone using the same |
| CN203038661U (en) * | 2012-12-26 | 2013-07-03 | 深圳市康冠技术有限公司 | Sound adjusting device and system |
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