CN105573398B - Poewr control method and electronic equipment - Google Patents
Poewr control method and electronic equipment Download PDFInfo
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- CN105573398B CN105573398B CN201410534370.3A CN201410534370A CN105573398B CN 105573398 B CN105573398 B CN 105573398B CN 201410534370 A CN201410534370 A CN 201410534370A CN 105573398 B CN105573398 B CN 105573398B
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Abstract
The invention discloses the electronic equipment of a kind of Poewr control method and the use Poewr control method.The Poewr control method, applied to electronic equipment, the Poewr control method includes：Based on audio signal to be output, the gross output value of at least two sound channels changed over time is calculated；Compare the gross output value and predetermined threshold power of calculating；Determine that the gross output value of the calculating is more than the time point of the threshold power, and calculate corresponding exceeded gain；And the audio signal at the time point is decayed with the amplitude corresponding to the exceeded gain.
Description
Technical field
The present invention relates to the field of Power Control, more particularly it relates to a kind of Poewr control method and use
The electronic equipment of the Poewr control method.
Background technology
At present, it is configured with intelligent audio power amplifier to lift volume in the electronic equipment of such as mobile phone.The lifting of volume
Often lead to the increase of power consumption.The intelligent audio power amplifier of SCVF single channel voice frequency is converted into 2.5A transient current.When there is two-way
Or even during multipath audio signal, current mobile phone or flat-panel systems will be unable to provide reliable power supply guarantee.
Accordingly, it is desirable to provide a kind of Poewr control method and the electronic equipment using the Poewr control method, it can
The power of audio signal is controlled, so that the instantaneous power consumption of system is controlled in rational scope.
The content of the invention
In view of the above, the invention provides the electricity of a kind of Poewr control method and the use Poewr control method
Sub- equipment.
According to one embodiment of present invention there is provided a kind of Poewr control method, applied to an electronic equipment, the work(
Rate control method includes：Based on audio signal to be output, the gross output of at least two sound channels changed over time is calculated
Value；Compare the gross output value and predetermined threshold power of calculating；Determine the gross output value of the calculating more than described
The time point of threshold power, and calculate corresponding exceeded gain；And by the audio signal at the time point with corresponding to institute
The amplitude for stating exceeded gain is decayed.
In addition, Poewr control method according to an embodiment of the invention, wherein the predetermined threshold power correspondence
In the supported maximum instantaneous electric current of the electronic equipment.
In addition, Poewr control method according to an embodiment of the invention, wherein by the audio signal at the time point
Decayed with the amplitude corresponding to the exceeded gain so that the gross output value after decay is equal to or less than the threshold value
Power.
In addition, Poewr control method according to an embodiment of the invention, in addition to the time after output attenuatoin
The audio signal of point.
In addition, Poewr control method according to an embodiment of the invention, wherein by the audio signal at the time point
Included with carrying out decay corresponding to the amplitude of the exceeded gain：The audio of at least two sound channel at the time point is believed
Number decayed with the amplitude corresponding to the exceeded gain.
In addition, Poewr control method according to an embodiment of the invention, wherein by the audio signal at the time point
Included with carrying out decay corresponding to the amplitude of the exceeded gain：Determine at least two sound channel each in the time
The sub- output power value of point, first sub- sound channel of the selection with maximum sub- output power value, by described the first of the time point
The audio signal of sub- sound channel is decayed with the amplitude corresponding to the exceeded gain.
According to another embodiment of the present invention there is provided a kind of electronic equipment, including：Audio signal acquiring unit, is used for
Obtain audio signal to be output；At least two audio signal output units, for being exported via corresponding at least two sound channel
Audio signal；And processing unit, for controlling the audio signal acquiring unit and at least two audio signal to export
Unit, wherein, audio signal of the processing unit based on input calculates total output of at least two sound channels changed over time
Performance number；Compare the gross output value and predetermined threshold power of calculating；Determine that the gross output value of the calculating is more than
The time point of the threshold power, and calculate corresponding exceeded gain；By the audio signal at the time point with corresponding to institute
The amplitude for stating exceeded gain is decayed.
In addition, electronic equipment according to another embodiment of the present invention, wherein the predetermined threshold power corresponds to institute
State the supported maximum instantaneous electric current of electronic equipment.
In addition, electronic equipment according to another embodiment of the present invention, wherein the processing unit is by the time point
Audio signal is decayed with the amplitude corresponding to the exceeded gain so that the gross output value after decay is equal to or less than
The threshold power.
In addition, electronic equipment according to another embodiment of the present invention, wherein at least two audio signal output is single
The audio signal at the time point after first output attenuatoin.
In addition, electronic equipment according to another embodiment of the present invention, wherein the processing unit is by the time point
The audio signal of at least two sound channel is decayed with the amplitude corresponding to the exceeded gain.
In addition, electronic equipment according to another embodiment of the present invention, wherein at least two described in processing unit determination
Sub- output power value of each of individual sound channel at the time point, first sub- sound of the selection with maximum sub- output power value
Road, the audio signal of the described first sub- sound channel at the time point is decayed with the amplitude corresponding to the exceeded gain.
Poewr control method according to embodiments of the present invention and the electronic equipment using the Poewr control method, it can
When even multipath audio signal concurrently reaches peak power to two-way, the instantaneous current value that can be supported based on system is entered to signal
Row decay, so that the instantaneous power consumption of system is controlled in rational scope.
It is to be understood that foregoing general description and following detailed description are both exemplary, and it is intended to
In further illustrating for the claimed technology of offer.
Brief description of the drawings
Fig. 1 is the block diagram of general introduction electronic equipment according to embodiments of the present invention；
Fig. 2 is the flow chart of general introduction Poewr control method according to embodiments of the present invention；
Fig. 3 is the flow chart of the first example of diagram Poewr control method according to embodiments of the present invention；And
Fig. 4 is the flow chart of the second example of diagram signal processing method according to embodiments of the present invention.
Embodiment
Hereinafter, describe with reference to the accompanying drawings multiple embodiments, using and modification.In addition, the embodiments described below is excellent
The particular example of choosing, and technically preferred various limitations are provided with, but in the following description, the invention is not restricted to these
Embodiment.
First, reference picture 1 is described to electronic equipment according to embodiments of the present invention.The electronic equipment is preferably e.g.
Smart phone, tablet personal computer, notebook computer etc. are configured with the electronic equipment of intelligent audio power amplifier.
As shown in figure 1, electronic equipment 10 according to embodiments of the present invention has audio signal acquiring unit 11, processing unit
13 and audio signal output unit 121With 122.Two audio signal output units shown in Fig. 1, so it is easy to understand that
The invention is not restricted to this.Electronic equipment 10 according to embodiments of the present invention can have three to export single even more than audio signal
Member.
Specifically, the audio signal acquiring unit 11 is used to obtain audio signal V to be outputI.For example, the audio
Signal acquiring unit 11 is treated from outside input multimedia stream file or the multimedia file decoding extraction to be played being locally stored
The audio signal V of outputI。
The processing unit 13 is used to control the audio signal acquiring unit 11 and at least two audio signal defeated
Go out unit 121With 122.Audio signal V of the processing unit 13 based on inputI, calculate the gross output of at least two sound channels
Value.The exports audio signal of two sound channels is obtained for V for example, calculatingO1And VO2, the exports audio signal is VO1And VO2When being
Between function, the audio signal to be exported at the time of being reflected in subsequent.
The peak power that the electronic equipment 10 can be supported by such as VBAT power subsystem can be provided it is instantaneous
Voltage or electric current are determined.When the gross output value of at least two sound channels is excessive, the electronic equipment 10 will be unable to provide stable
Power supply ensure.Therefore, the processing unit 13 needs to control the gross output value of at least two sound channels in system institute energy
In the range of support, to avoid the distortion for exporting acoustic audio signal.
Hereinafter, reference picture 2 to Fig. 4 is described as the Power Control performed by electronic equipment 10 according to embodiments of the present invention
Method.
Fig. 2 is the flow chart of general introduction Poewr control method according to embodiments of the present invention.As shown in Fig. 2 according to the present invention
The Poewr control method of embodiment comprises the following steps：
In step s 201, audio signal V to be output is obtained by the audio signal acquiring unit 11I.As described above,
The audio signal acquiring unit 11 is from outside input multimedia stream file or the multimedia file solution to be played being locally stored
Code extracts audio signal V to be outputI.Hereafter, processing enters step S202.
In step S202, the processing unit 13 is based on audio signal V to be outputI, calculating change over time to
Few two sound channel (that is, exports audio signal V of two sound channelsO1And VO2) gross output value.Hereafter, processing enters step
S203。
In step S203, compare the gross output value and predetermined threshold power of calculating, in terms of determining whether there is
The gross output value of calculation is more than predetermined threshold power.
If obtaining positive result in step S203, that is, the gross output value changed over time calculated, which exists, to be more than
The situation of predetermined threshold power, then processing enters step S204.
In step S204, the processing unit 13 determines that the gross output calculated is more than the specific of the threshold power
Time point, and calculate the corresponding exceeded gain at the time point.Hereafter, processing enters step S205.
In step S205, the processing unit 13 is by the audio signal at the time point with corresponding in step S204
The amplitude of the exceeded gain calculated is decayed so that the gross output value after decaying at the time point is equal to or less than
The threshold power.Hereafter, processing enters step S206.
In step S206, by the audio signal output unit 121With 122Output decays via the processing unit 13
The audio signal at the time point afterwards.
Return to step S203, if obtaining negative decision in step S203, that is, the total output changed over time calculated
The situation more than predetermined threshold power is not present in performance number, then processing enters step S207.
In step S207, by the audio signal output unit 121With 122Directly export the time point to be output
Audio signal.
In this way, in Poewr control method according to embodiments of the present invention as shown in Figure 2, by calculating following spy in real time
The gross output value for the audio signal to be output fixed time a little, and the power threshold value that can be supported based on system, will
Decayed in the gross output value of calculating beyond the audio signal of the particular point in time of power threshold value so that in the time
Gross output value after point decay is equal to or less than the threshold power, is closing the instantaneous power consumption control of system so as to realize
In the range of reason.
Hereinafter, by reference picture 3 and Fig. 4 description how the idiographic flow decayed to audio signal.
Fig. 3 is the flow chart of the first example of diagram Poewr control method according to embodiments of the present invention.As shown in Figure 3
First example of Poewr control method according to embodiments of the present invention comprises the following steps.
Step S301 to step S304 shown in Fig. 3 is identical to step S204 with the step S201 shown in Fig. 2, herein
Its repeated description will be omitted.
Determine that the gross output calculated is more than the specific time point of the threshold power in step s 304, and calculate
After the corresponding exceeded gain at the time point, the processing of the first example of Poewr control method enters step S305.
In step S305, the processing unit 13 is by the audio signal of at least two sound channels at the time point with correspondence
Decayed in the amplitude of exceeded gain.That is, the audio signal of at least two sound channels is entered with identical attenuation amplitude
Row Uniform attenuation.Hereafter, processing enters step S306.
In step S306, by the audio signal output unit 121With 122Output is uniform via the processing unit 13
The audio signal at the time point after decay.
Fig. 4 is the flow chart of the second example of diagram Poewr control method according to embodiments of the present invention.As shown in Figure 4
Second example of Poewr control method according to embodiments of the present invention comprises the following steps.
Step S401 to step S404 shown in Fig. 4 is identical to step S204 with the step S201 shown in Fig. 2, herein
Its repeated description will be omitted.
Determine that the gross output calculated is more than the specific time point of the threshold power in step s 404, and calculate
After the corresponding exceeded gain at the time point, the processing of the second example of Poewr control method enters step S405.
In step S405, the processing unit 13 determine at least two sound channels each is sub defeated at the time point
Go out performance number, and select the first sub- sound channel with maximum sub- output power value.Hereafter, processing enters step S406.
In step S406, the processing unit 13 by the audio signal of the first of the time point the sub- sound channel with corresponding to
The amplitude of exceeded gain is decayed.That is, by the audio signal of one at least two sound channels with corresponding to exceeded
The amplitude of gain is decayed so that the gross output value after decaying at the time point is equal to or less than the threshold power.
Alternately, it is understood that there may be after certain amplitude that the audio signal of the first sub- sound channel decays, gross output is still higher than
The situation of the threshold power.Due to if further to the audio signal of the first sub- sound channel, then the first sub- sound channel is defeated
Obvious distortion will likely be occurred by going out signal.Now, the processing unit 13 can transfer to another at least two sound channels
Audio signal decayed, until meet the time point decay after gross output value be equal to or less than the threshold value work(
Rate.Hereafter, processing enters step S406.
In step S406, by the audio signal output unit 121With 122Output is distinguished via the processing unit 13
The audio signal at the time point after decay.
More than, describe Poewr control method according to embodiments of the present invention referring to figs. 1 to Fig. 4 and use the power control
The electronic equipment of method processed, it can be when even multipath audio signal concurrently reaches peak power to two-way, can be with based on system
The instantaneous current value of support is decayed to signal, so that the instantaneous power consumption of system is controlled in rational scope.
It should be noted that in this manual, term " comprising ", "comprising" or its any other variant are intended to
Nonexcludability is included, so that process, method, article or equipment including a series of key elements not only will including those
Element, but also other key elements including being not expressly set out, or also include being this process, method, article or equipment
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Also there is other identical element in process, method, article or equipment including the key element.
Finally, in addition it is also necessary to explanation, a series of above-mentioned processing are not only included with order described here in temporal sequence
The processing of execution, and the processing including performing parallel or respectively rather than in chronological order.
Through the above description of the embodiments, those skilled in the art can be understood that the present invention can be by
Software adds the mode of required hardware platform to realize, naturally it is also possible to all implemented by hardware.Understood based on such,
What technical scheme contributed to background technology can be embodied in the form of software product in whole or in part,
The computer software product can be stored in storage medium, such as ROM/RAM, magnetic disc, CD, including some instructions are to make
Obtain a computer equipment (can be personal computer, server, or network equipment etc.) and perform each embodiment of the invention
Or the method described in some parts of embodiment.
The present invention is described in detail above, principle and embodiment party of the specific case used herein to the present invention
Formula is set forth, and the explanation of above example is only intended to the method and its core concept for helping to understand the present invention；Meanwhile, it is right
In those of ordinary skill in the art, according to the thought of the present invention, change is had in specific embodiments and applications
Part, in summary, this specification content should not be construed as limiting the invention.
Claims (12)
1. a kind of Poewr control method, applied to an electronic equipment, the Poewr control method includes：
Based on audio signal to be output, the gross output value of at least two sound channels changed over time is calculated；
Compare the gross output value and predetermined threshold power of calculating；
Determine that the gross output value of the calculating is more than the time point of the threshold power, and calculate corresponding exceeded increasing
Benefit；And
The audio signal at the time point is decayed with the amplitude corresponding to the exceeded gain.
2. Poewr control method as claimed in claim 1, wherein the predetermined threshold power corresponds to the electronic equipment
Supported maximum instantaneous electric current.
3. Poewr control method as claimed in claim 2, wherein by the audio signal at the time point with corresponding to described super
The amplitude of mark gain is decayed so that the gross output value after decay is equal to or less than the threshold power.
4. Poewr control method as claimed in claim 3, includes the audio signal at the time point after output attenuatoin.
5. claim 1 to 4 it is any as described in Poewr control method, wherein by the audio signal at the time point with correspondence
Carrying out decay in the amplitude of the exceeded gain includes：
The audio signal of at least two sound channel at the time point is declined with the amplitude corresponding to the exceeded gain
Subtract.
6. claim 1 to 4 it is any as described in Poewr control method, wherein by the audio signal at the time point with correspondence
Carrying out decay in the amplitude of the exceeded gain includes：
Each sub- output power value at the time point of at least two sound channel is determined, selection has maximum son output
First sub- sound channel of performance number, by the audio signal of the described first sub- sound channel at the time point with corresponding to the exceeded gain
Amplitude decayed.
7. a kind of electronic equipment, including：
Audio signal acquiring unit, the audio signal to be output for obtaining；
At least two audio signal output units, for via corresponding at least two sound channels exports audio signal；And
Processing unit, for controlling the audio signal acquiring unit and at least two audio signal output unit,
Wherein, audio signal of the processing unit based on input, calculates total output of at least two sound channels changed over time
Performance number；Compare the gross output value and predetermined threshold power of calculating；Determine that the gross output value of the calculating is more than
The time point of the threshold power, and calculate corresponding exceeded gain；By the audio signal at the time point with corresponding to institute
The amplitude for stating exceeded gain is decayed.
8. electronic equipment as claimed in claim 7, can be propped up wherein the predetermined threshold power corresponds to the electronic equipment
The maximum instantaneous electric current held.
9. electronic equipment as claimed in claim 8, wherein the processing unit by the audio signal at the time point with correspondence
Decayed in the amplitude of the exceeded gain so that the gross output value after decay is equal to or less than the threshold power.
10. electronic equipment as claimed in claim 9, wherein after at least two audio signal output units output attenuatoin
The audio signal at the time point.
11. claim 7 to 10 it is any as described in electronic equipment, wherein the processing unit is by described in the time point
The audio signal of at least two sound channels is decayed with the amplitude corresponding to the exceeded gain.
12. claim 7 to 10 it is any as described in electronic equipment, wherein the processing unit determines at least two sound
Sub- output power value of each of road at the time point, first sub- sound channel of the selection with maximum sub- output power value will
The audio signal of the described first sub- sound channel at the time point is decayed with the amplitude corresponding to the exceeded gain.
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| CN201410534370.3A CN105573398B (en) | 2014-10-11 | 2014-10-11 | Poewr control method and electronic equipment |
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| CN201410534370.3A CN105573398B (en) | 2014-10-11 | 2014-10-11 | Poewr control method and electronic equipment |
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| CN111010650B (en) * | 2018-10-06 | 2022-02-11 | 华为技术有限公司 | Audio signal processing method, device and equipment |
| WO2021138808A1 (en) * | 2020-01-07 | 2021-07-15 | 深圳市大疆创新科技有限公司 | Audio signal processing method, related device, loudspeaker device, and storage medium |
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| US7894598B2 (en) * | 2004-12-14 | 2011-02-22 | Nuance Communications, Inc. | System for limiting receive audio |
| JP2006301134A (en) * | 2005-04-19 | 2006-11-02 | Hitachi Ltd | Device and method for music detection, and sound recording and reproducing device |
| US7995775B2 (en) * | 2006-07-14 | 2011-08-09 | Broadcom Corporation | Automatic volume control for audio signals |
| CN101282111B (en) * | 2008-06-02 | 2011-04-20 | 北京海尔集成电路设计有限公司 | Method and system for controlling sound volume adjustment |
| CN202652508U (en) * | 2012-06-07 | 2013-01-02 | Tcl通力电子（惠州）有限公司 | Power protection circuit |
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