CN107896356A - A kind of audio control method and system of FM control systems - Google Patents
A kind of audio control method and system of FM control systems Download PDFInfo
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- CN107896356A CN107896356A CN201711018561.4A CN201711018561A CN107896356A CN 107896356 A CN107896356 A CN 107896356A CN 201711018561 A CN201711018561 A CN 201711018561A CN 107896356 A CN107896356 A CN 107896356A
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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
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Abstract
The invention discloses a kind of audio control method and system of FM control systems, this method comprises the following steps：After S1, detection signal mass value, judge whether signal quality value is less than default first threshold, if so, then turning audio output down or closing audio output；Conversely, continue executing with S2；After S2, detection audio quality value, judge whether audio quality value is less than default Second Threshold, if so, then binding signal mass value and audio quality value dynamic regulation audio output；Conversely, continue executing with S3；S3, according to default audio output gain regulate and control audio output.The present invention can avoid user from hearing obvious FM noises, improve the experience of user, improve the automaticity of the regulation and control in vehicle FM radio station, the regulation and control manual without user, so as to improve the efficiency of FM radio station audio frequency control, the use of client is greatly facilitated, can be widely applied to audio frequency control technical field.
Description
Technical field
The present invention relates to audio frequency control technical field, more particularly to a kind of audio control method of FM control systems and it is
System.
Background technology
Important component of the FM radios as vehicle, the quality and radio signals intensity of its audio are closely bound up, lead to
Often when radio signals are weaker, FM noises can be bigger, for example vehicle is opened into tunnel, or enters the similar closed area such as basement
When, the decrease of radio signals usually comes at larger in-car FM noises, has had a strong impact on the experience of user.Existing FM radios exist
Opening, FM broadcast sound volume sizes will not be adjusted according to signal strength and audio quality quality, caused in signal or tonequality
In the case of variation, FM noise is significantly heard by user, has had a strong impact on the experience of user.
The content of the invention
In order to solve the above-mentioned technical problem, the purpose of the present invention is to propose to one kind according to signal strength and audio quality quality
To automatically control the method for FM broadcast sound volume sizes.
It is another object of the present invention to propose that one kind plays according to signal strength and audio quality quality to automatically control FM
The system of volume.
Technical scheme is used by the inventive method：
A kind of audio control method of FM control systems, comprises the following steps：
After the current signal quality value in S1, detection FM radio station, judge whether signal quality value is less than default first threshold,
If so, then turn audio output down or close audio output；Conversely, continue executing with S2；
After the current audio quality value in S2, detection FM radio station, judge whether audio quality value is less than default Second Threshold,
If so, then binding signal mass value and audio quality value dynamic regulation audio output；Conversely, continue executing with S3；
S3, according to default audio output gain regulate and control audio output.
Further, the step of binding signal mass value described in the step S2 and audio quality value dynamic regulation audio output
Suddenly, it is specially：
Calculated with reference to the first threshold values, Second Threshold, signal quality value, audio quality value and default gain formula and obtain sound
After frequency output gain, audio output is regulated and controled according to audio output gain.
Further, it is characterised in that the default gain formula is：
A=k*G1*G2
Wherein, A is audio output gain, and k is volume control coefrficient；G1=k1* (Q1/F1)x, k1 is signal quality control
Coefficient, Q1 are current signal quality value, and F1 is first threshold, and x is the first default power coefficient value；G2=k2* (Q2/F2)y, k2
For audio quality control coefrficient, Q2 is present video mass value, and F2 is Second Threshold, and y is the second default power coefficient value.
Further, the step S2 specifically includes following steps：
The current signal quality value in S21, detection FM radio station, judges whether current signal quality value is more than or equal to first
Threshold value and be less than the default first secondary threshold value, if so, terminating when time judging flow；Conversely, continue executing with S22；
S22, judge whether current audio quality value is less than default Second Threshold, if so, binding signal mass value and
Audio quality value dynamic regulation audio output；Conversely, continue executing with S3；
Wherein, the described first secondary threshold value is more than first threshold.
Further, the step S3 specifically includes following steps：
The current audio quality value in FM radio station is detected, judges whether audio quality value is more than or equal to Second Threshold and is less than
Default second secondary threshold value, if so, terminating to judge flow when secondary；Conversely, it is defeated to regulate and control audio according to default audio output gain
Go out；
Wherein, the described second secondary threshold value is more than Second Threshold.
Further, the step S1 specifically includes following steps：
S11, the signal quality value in continuous detection n times FM radio station, judge in the signal quality value that n times detection obtains whether
It is less than default first threshold in the presence of at least L signal quality value, if so, turning audio output down or closing audio output；Conversely,
Continue executing with S12；
S12, judge to be more than or wait with the presence or absence of at least M signal quality value in the signal quality value that n times detection obtains
In default first threshold, if so, continuing executing with S2；
Wherein, N, L and M are respectively the first detection frequency threshold value, the second detection frequency threshold value and the 3rd inspection set in advance
Survey frequency threshold value, and N/2<L≤N and N/2<M≤N.
Further, the step S2 specifically includes following steps：
S21, the audio quality value in continuous detection n times FM radio station, judge in the audio quality value that n times detection obtains whether
It is less than default Second Threshold in the presence of at least L secondary audio programs mass value, if so, binding signal mass value and audio quality value dynamic are adjusted
Control audio output；Conversely, continue executing with S22；
S22, judge to be more than or wait with the presence or absence of at least M secondary audio programs mass value in the audio quality value that n times detection obtains
In default Second Threshold, if so, continuing executing with S3；Conversely, directly terminate to judge flow when secondary.
Wherein, N, L and M are respectively the first detection frequency threshold value, the second detection frequency threshold value and the 3rd inspection set in advance
Survey frequency threshold value, and N/2<L≤N and N/2<M≤N.
Technical scheme is used by present system：
A kind of audio control system of FM control systems, the system include：
Memory, for depositing program；
Processor, for performing described program for execution following steps：
After the current signal quality value in S1, detection FM radio station, judge whether signal quality value is less than default first threshold,
If so, then turn audio output down or close audio output；Conversely, continue executing with S2；
After the current audio quality value in S2, detection FM radio station, judge whether audio quality value is less than default Second Threshold,
If so, then binding signal mass value and audio quality value dynamic regulation audio output；Conversely, continue executing with S3；
S3, according to default audio output gain regulate and control audio output.
Further, the step of binding signal mass value described in the step S2 and audio quality value dynamic regulation audio output
Suddenly, it is specially：
Calculated with reference to the first threshold values, Second Threshold, signal quality value, audio quality value and default gain formula and obtain sound
After frequency output gain, audio output is regulated and controled according to audio output gain.
Further, it is characterised in that the default gain formula is：
A=k*G1*G2
Wherein, A is audio output gain, and k is volume control coefrficient；G1=k1* (Q1/F1)x, k1 is signal quality control
Coefficient, Q1 are current signal quality value, and F1 is first threshold, and x is the first default power coefficient value；G2=k2* (Q2/F2)y, k2
For audio quality control coefrficient, Q2 is present video mass value, and F2 is Second Threshold, and y is the second default power coefficient value.
The inventive method, the beneficial effect of system are：The present invention is by detecting current signal quality value and audio quality
Value, FM control systems are according to the signal quality value and audio quality value auto-control audio output detected, when automobile drives into letter
During number ropy region, audio output is turned or closed to FM control systems down audio output automatically, is made an uproar so as to reduce in-car FM
Sound, when signal quality value is high and audio quality value is not high, FM control system binding signal mass values and audio quality value dynamic
Regulate and control audio output, when signal quality value is high and audio quality value is high, FM control systems are according to default audio output gain
Regulate and control audio output, based on this, the present invention can avoid user from hearing obvious FM noises, improve the experience of user.By this hair
The automaticity of the bright regulation and control that can also improve vehicle FM radio station, the regulation and control manual without user, so as to improve FM radio station sound
The efficiency of frequency control, greatly facilitates the use of client.
Brief description of the drawings
Fig. 1 is a kind of flow chart of the audio control method embodiment one of FM control systems of the present invention.
Embodiment
Embodiment one
Reference picture 1, a kind of audio control method of FM control systems is present embodiments provided, is comprised the following steps：
After the current signal quality value in S101, detection FM radio station, judge whether signal quality value is less than default first threshold
Value, if so, then turning audio output down or closing audio output；Conversely, continue executing with S102.
After the current audio quality value in S102, detection FM radio station, judge whether audio quality value is less than default second threshold
Value, if so, then binding signal mass value and audio quality value dynamic regulation audio output；Conversely, continue executing with S103.
S103, according to default audio output gain regulate and control audio output.
The reception antenna in FM radio station receives radio signals, and radio signals are reached into FM control systems, FM control systems
The signal quality value and audio quality value of the radio signals received are detected, according to the value detected come controlling transmission to audio mixing mould
The signal power of block, after radio signals reach mix module, other audio stream signals are mixed in mix module, then by DSP
Loudspeaker are output to DAC processing, so as to play out.
The FM control systems include signal quality detector module, audio quality detection module, FM volume control modules, when
After reception antenna receives radio signals, radio signals first reach signal quality detector module, the signal quality detector module
After radio signals are received, radio signals quality is assessed and calculated, namely the powers of radio signals assess and
Calculate, obtain the current signal quality value Q1 in radio station, when signal quality value Q1 is less than first threshold F1, illustrate signal now
It is weaker, it is mostly noise, if the signal is directly output into mix module, the signal is mainly shown as very noisy, institute
FM volume control modules are given with signal quality detector module photos and sending messages, FM volume control modules directly close the defeated of radio signals
Go out, radio signals is not transmitted to mix module, so as to avoid the output of noise.Above-mentioned first threshold is closed for signal intensity
Lattice threshold values, the qualified threshold values of the signal intensity are measured according to the demand of user by test of many times.On radio signals quality
Acquisition, FM chips in the market provide the interface of signal quality value acquisition, can get the signal in radio station in real time
Intensity level.
When the signal quality value Q1 detected is more than or equal to first threshold F1, signal quality detector module photos and sending messages are given
Audio quality detection module, after audio quality detection module receives information, the audio quality of radio signals is detected, when what is detected
When audio quality value Q2 is less than Second Threshold F2, audio quality detection module sends the first information and gives FM volume control modules, FM
Volume control module reaches the radio station power increasing of mix module when Q2 values increase according to the output of Q2 and Q1 dynamic regulation audios
Greatly, the radio station power that mix module is reached when Q2 values reduce reduces.Audio quality value Q2 can obtain from the API of FM chips
Take, the real-time interface that FM integrated chips audio quality value obtains.Second Threshold F2 is the qualified threshold values of audio quality, the audio matter
Qualified threshold values is measured to be measured by test of many times according to the demand of user.
When the audio quality value Q2 that audio quality detection module detects is more than or equal to Second Threshold F2, illustrate now
The signal in radio station is very good, and audio quality detection module sends the second information and gives FM volume control modules, FM volumes control mould
Root tuber regulates and controls audio output according to presetting gain, and radio signals, by processing, are played after mix module by loudspeaker.
When automobile drives into the region of poor signal quality, for example, tunnel or the similar closed area of basement, FM radio signals
Signal it is general all very weak, the noise that now FM radio station are broadcasted is very big, can directly affect the experience of user, by the above method,
FM control systems regulate and control audio output according to default audio output gain and avoid user from hearing obvious FM noises, improve user
Experience.With it, the automaticity of the regulation and control in vehicle FM radio station is improved simultaneously, the regulation and control manual without user, from
And the efficiency of FM radio station audio frequency control is improved, greatly facilitate the use of client.
Preferred embodiment is further used as, binding signal mass value and audio quality value are moved described in the step S2
State regulates and controls the step of audio output, is specially：
Calculated with reference to the first threshold values, Second Threshold, signal quality value, audio quality value and default gain formula and obtain sound
After frequency output gain, audio output is regulated and controled according to audio output gain.
Preferred embodiment is further used as, the default gain formula is：
A=k*G1*G2
Wherein, A is audio output gain, and k is volume control coefrficient；G1=k1* (Q1/F1)x, k1 is signal quality control
Coefficient, Q1 are current signal quality value, and F1 is first threshold, and x is the first default power coefficient value；G2=k2* (Q2/F2)y, k2
For audio quality control coefrficient, Q2 is present video mass value, and F2 is Second Threshold, and y is the second default power coefficient value.
Preferred embodiment is further used as, the step S102 specifically includes following steps：
The current signal quality value in S1021, detection FM radio station, judges whether current signal quality value is more than or equal to the
One threshold value and be less than the default first secondary threshold value, if so, terminating when time judging flow；Conversely, continue executing with S1022；
S1022, judge whether current audio quality value is less than default Second Threshold, if so, binding signal mass value
With audio quality value dynamic regulation audio output；Conversely, continue executing with S103；
Wherein, the described first secondary threshold value is more than first threshold.
Preferred embodiment is further used as, the step S103 specifically includes following steps：
The current audio quality value in FM radio station is detected, judges whether audio quality value is more than or equal to Second Threshold and is less than
Default second secondary threshold value, if so, terminating to judge flow when secondary；Conversely, it is defeated to regulate and control audio according to default audio output gain
Go out；
Wherein, the described second secondary threshold value is more than Second Threshold.
Hover to eliminate signal quality value between first threshold or audio quality value is hovered between Second Threshold, so as to draw
Play FM control systems and excessively frequently regulate and control audio output, and then have influence on the experience of user, this method is secondary by increase by first
Threshold value and the second secondary threshold value avoid FM control systems from excessively frequently regulating and controlling audio output.When detecting that signal quality value is small
When first threshold, audio output is closed；And it is less than the default first pair when signal quality value is more than or equal to first threshold
During threshold value, without regulation and control, the audio gain of output is constant, when signal quality value is more than or equal to the first secondary threshold value and audio matter
When value is less than Second Threshold, binding signal mass value and audio quality value dynamic regulation audio output；When audio quality value is big
In or equal to Second Threshold when being less than the second secondary threshold value, without regulation and control, the audio gain of output is constant, works as signal quality value
When being more than or equal to Second Threshold more than or equal to the first secondary threshold value and audio quality value, adjusted according to default audio output gain
Control audio output.By the above method, can effectively avoid because signal intensity frequently causes FM control systems excessively frequent
Regulation and control audio output the problem of.
Embodiment two
A kind of audio control method of FM control systems is present embodiments provided, is comprised the following steps：
After the current signal quality value in A1, detection FM radio station, judge whether signal quality value is less than default first threshold,
If so, then turn audio output down or close audio output；Conversely, continue executing with A2.
Step A1 includes A11~A12：
A11, the signal quality value in continuous detection n times FM radio station, judge in the signal quality value that n times detection obtains whether
It is less than default first threshold in the presence of at least L signal quality value, if so, turning audio output down or closing audio output；Conversely,
Continue executing with A12.
A12, judge to be more than or wait with the presence or absence of at least M signal quality value in the signal quality value that n times detection obtains
In default first threshold, if so, continuing executing with A2.
Wherein, N, L and M are respectively the first detection frequency threshold value, the second detection frequency threshold value and the 3rd inspection set in advance
Survey frequency threshold value, and N/2<L≤N and N/2<M≤N.
After the current audio quality value in A2, detection FM radio station, judge whether audio quality value is less than default Second Threshold,
If so, then binding signal mass value and audio quality value dynamic regulation audio output；Conversely, continue executing with A3.
Step A2 includes A21~A22：
A21, the audio quality value in continuous detection n times FM radio station, judge in the audio quality value that n times detection obtains whether
It is less than default Second Threshold in the presence of at least L secondary audio programs mass value, if so, binding signal mass value and audio quality value dynamic are adjusted
Control audio output；Conversely, continue executing with A22.
A22, judge to be more than or wait with the presence or absence of at least M secondary audio programs mass value in the audio quality value that n times detection obtains
In default Second Threshold, if so, continuing executing with A3；Conversely, directly terminate to judge flow when secondary.
Wherein, N, L and M are respectively the first detection frequency threshold value, the second detection frequency threshold value and the 3rd inspection set in advance
Survey frequency threshold value, and N/2<L≤N and N/2<M≤N.
A3, according to default audio output gain regulate and control audio output.
By within the set time in the present embodiment, continuous detection signal mass value or audio quality value, the number of detection
For preset times.This method is relative with the method in embodiment one, by continuously detecting multiple signal mass value or audio quality
Value, can effectively avoid because signal intensity frequently cause FM control systems excessively frequently regulate and control audio output the problem of,
So as to improve the experience of user.
Embodiment three
A kind of audio control system of FM control systems is present embodiments provided, the system includes：
Memory, for depositing program；
Processor, for performing described program for execution following steps：
After the current signal quality value in S1, detection FM radio station, judge whether signal quality value is less than default first threshold,
If so, then turn audio output down or close audio output；Conversely, continue executing with S2；
After the current audio quality value in S2, detection FM radio station, judge whether audio quality value is less than default Second Threshold,
If so, then binding signal mass value and audio quality value dynamic regulation audio output；Conversely, continue executing with S3；
S3, according to default audio output gain regulate and control audio output.
Preferred embodiment is further used as, binding signal mass value and audio quality value are moved described in the step S2
State regulates and controls the step of audio output, is specially：
Calculated with reference to the first threshold values, Second Threshold, signal quality value, audio quality value and default gain formula and obtain sound
After frequency output gain, audio output is regulated and controled according to audio output gain.
Preferred embodiment is further used as, the default gain formula is：
A=k*G1*G2
Wherein, A is audio output gain, and k is volume control coefrficient；G1=k1* (Q1/F1)x, k1 is signal quality control
Coefficient, Q1 are current signal quality value, and F1 is first threshold, and x is the first default power coefficient value；G2=k2* (Q2/F2)y, k2
For audio quality control coefrficient, Q2 is present video mass value, and F2 is Second Threshold, and y is the second default power coefficient value.
The system is by detecting current signal quality value and audio quality value, and FM control systems are according to the signal detected
Mass value and audio quality value auto-control audio output, when automobile drives into the region of poor signal quality, FM control systems are certainly
It is dynamic to turn audio output down, so as to reduce in-car FM noises, when signal quality value is high and audio quality value is not high, FM controls system
System binding signal mass value and audio quality value dynamic regulation audio output, when signal quality value is high and audio quality value is high,
FM control systems regulate and control audio output according to default audio output gain, and based on this, the system can avoid user from hearing substantially
FM noises, improve the experience of user.The automaticity of the regulation and control in vehicle FM radio station can also be improved by the system, without
The manual regulation and control of user, so as to improve the efficiency of FM radio station audio frequency control, greatly facilitate the use of client.
Above is the preferable implementation to the present invention is illustrated, but the invention is not limited to the implementation
Example, those skilled in the art can also make a variety of equivalent variations on the premise of without prejudice to spirit of the invention or replace
Change, these equivalent deformations or replacement are all contained in the application claim limited range.
Claims (10)
1. a kind of audio control method of FM control systems, it is characterised in that comprise the following steps：
After the current signal quality value in S1, detection FM radio station, judge whether signal quality value is less than default first threshold, if
It is then to turn audio output or closing audio output down；Conversely, continue executing with S2；
After the current audio quality value in S2, detection FM radio station, judge whether audio quality value is less than default Second Threshold, if
It is, then binding signal mass value and audio quality value dynamic regulation audio output；Conversely, continue executing with S3；
S3, according to default audio output gain regulate and control audio output.
2. the audio control method of a kind of FM control systems according to claim 1, it is characterised in that in the step S2
The step of binding signal mass value and audio quality value dynamic regulation audio output, it is specially：
It is defeated that acquisition audio is calculated with reference to the first threshold values, Second Threshold, signal quality value, audio quality value and default gain formula
After going out gain, audio output is regulated and controled according to audio output gain.
A kind of 3. audio control method of FM control systems according to claim 2, it is characterised in that the default increasing
Beneficial formula is：
A=k*G1*G2
Wherein, A is audio output gain, and k is volume control coefrficient；G1=k1* (Q1/F1)x, k1 is signal quality control coefrficient,
Q1 is current signal quality value, and F1 is first threshold, and x is the first default power coefficient value；G2=k2* (Q2/F2)y, k2 is sound
Frequency quality control coefficient, Q2 are present video mass value, and F2 is Second Threshold, and y is the second default power coefficient value.
A kind of 4. audio control method of FM control systems according to claim 1, it is characterised in that the step S2 tools
Body comprises the following steps：
The current signal quality value in S21, detection FM radio station, judges whether current signal quality value is more than or equal to first threshold
And it is less than the default first secondary threshold value, if so, terminating to judge flow when secondary；Conversely, continue executing with S22；
S22, judge whether current audio quality value is less than default Second Threshold, if so, binding signal mass value and audio
Mass value dynamic regulation audio output；Conversely, continue executing with S3；
Wherein, the described first secondary threshold value is more than first threshold.
A kind of 5. audio control method of FM control systems according to claim 4, it is characterised in that the step S3 tools
Body comprises the following steps：
The current audio quality value in FM radio station is detected, judges whether audio quality value is more than or equal to Second Threshold and is less than default
The second secondary threshold value, if so, terminating when time judging flow；Conversely, audio output is regulated and controled according to default audio output gain；
Wherein, the described second secondary threshold value is more than Second Threshold.
A kind of 6. audio control method of FM control systems according to claim 1, it is characterised in that the step S1 tools
Body comprises the following steps：
S11, the signal quality value in continuous detection n times FM radio station, judge to whether there is in the signal quality value that n times detection obtains
At least L signal quality value is less than default first threshold, if so, turning audio output down or closing audio output；Conversely, continue
Perform S12；
S12, judge with the presence or absence of at least M signal quality value to be more than or equal in advance in the signal quality value that n times detection obtains
If first threshold, if so, continuing executing with S2；
Wherein, N, L and M are respectively the first detection frequency threshold value, the second detection frequency threshold value and the 3rd detection time set in advance
Number threshold value, and N/2<L≤N and N/2<M≤N.
A kind of 7. audio control method of FM control systems according to claim 1, it is characterised in that the step S2 tools
Body comprises the following steps：
S21, the audio quality value in continuous detection n times FM radio station, judge to whether there is in the audio quality value that n times detection obtains
At least L secondary audio programs mass value is less than default Second Threshold, if so, binding signal mass value and audio quality value dynamic regulation sound
Frequency exports；Conversely, continue executing with S22；
S22, judge with the presence or absence of at least M secondary audio programs mass value to be more than or equal in advance in the audio quality value that n times detection obtains
If Second Threshold, if so, continuing executing with S3；Conversely, directly terminate to judge flow when secondary.
Wherein, N, L and M are respectively the first detection frequency threshold value, the second detection frequency threshold value and the 3rd detection time set in advance
Number threshold value, and N/2<L≤N and N/2<M≤N.
8. a kind of audio control system of FM control systems, it is characterised in that the system includes：
Memory, for depositing program；
Processor, for performing described program for execution following steps：
After the current signal quality value in S1, detection FM radio station, judge whether signal quality value is less than default first threshold, if
It is then to turn audio output or closing audio output down；Conversely, continue executing with S2；
After the current audio quality value in S2, detection FM radio station, judge whether audio quality value is less than default Second Threshold, if
It is, then binding signal mass value and audio quality value dynamic regulation audio output；Conversely, continue executing with S3；
S3, according to default audio output gain regulate and control audio output.
9. the audio control system of a kind of FM control systems according to claim 8, it is characterised in that in the step S2
The step of binding signal mass value and audio quality value dynamic regulation audio output, it is specially：
It is defeated that acquisition audio is calculated with reference to the first threshold values, Second Threshold, signal quality value, audio quality value and default gain formula
After going out gain, audio output is regulated and controled according to audio output gain.
A kind of 10. audio control system of FM control systems according to claim 9, it is characterised in that default gain
Formula is：
A=k*G1*G2
Wherein, A is audio output gain, and k is volume control coefrficient；G1=k1* (Q1/F1)x, k1 is signal quality control coefrficient,
Q1 is current signal quality value, and F1 is first threshold, and x is the first default power coefficient value；G2=k2* (Q2/F2)y, k2 is sound
Frequency quality control coefficient, Q2 are present video mass value, and F2 is Second Threshold, and y is the second default power coefficient value.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109003622A (en) * | 2018-09-11 | 2018-12-14 | 广州小鹏汽车科技有限公司 | Noise reduction process method, apparatus, radio and the vehicles |
| CN113364418A (en) * | 2021-06-28 | 2021-09-07 | 贵州航天电子科技有限公司 | Program-controlled gain amplification circuit and signal control method |
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| CN109003622A (en) * | 2018-09-11 | 2018-12-14 | 广州小鹏汽车科技有限公司 | Noise reduction process method, apparatus, radio and the vehicles |
| CN113364418A (en) * | 2021-06-28 | 2021-09-07 | 贵州航天电子科技有限公司 | Program-controlled gain amplification circuit and signal control method |
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