CN105551500B - A kind of acoustic signal processing method and device - Google Patents
A kind of acoustic signal processing method and device Download PDFInfo
- Publication number
- CN105551500B CN105551500B CN201510632668.2A CN201510632668A CN105551500B CN 105551500 B CN105551500 B CN 105551500B CN 201510632668 A CN201510632668 A CN 201510632668A CN 105551500 B CN105551500 B CN 105551500B
- Authority
- CN
- China
- Prior art keywords
- audio signal
- fdrc
- group
- mobile terminal
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000003672 processing method Methods 0.000 title claims abstract description 15
- 230000005236 sound signal Effects 0.000 claims abstract description 351
- 238000000034 method Methods 0.000 claims description 31
- 238000004891 communication Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 238000004590 computer program Methods 0.000 claims 2
- 230000006399 behavior Effects 0.000 claims 1
- 238000013497 data interchange Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- 239000000284 extract Substances 0.000 description 6
- 238000000605 extraction Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
- G10L25/18—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being spectral information of each sub-band
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Computational Linguistics (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Telephone Function (AREA)
Abstract
The embodiment of the invention discloses a kind of acoustic signal processing method and devices, comprising: obtains reference audio signal, wherein the reference audio signal includes the M group audio signal of M source of sound, and the M is positive integer；Detect whether the M is greater than or equal to preset threshold；If detecting, the M is greater than or equal to preset threshold, executes full frequency band dynamic range control FDRC operation to the reference audio signal to obtain target audio signal；Export the target audio signal.Using the embodiment of the present invention, be conducive to promote the fluency that Audio Signal Processing efficiency and audio play.
Description
Technical field
The present invention relates to technical field of electronic equipment more particularly to a kind of acoustic signal processing methods and device.
Background technique
Existing high-pass platform, MTK platform all frequency of use subregion dynamic range control (multibandDynamic range
Control, MBDRC) scheme handles audio signal, i.e., the audio signal of same source of sound is divided into multiple signal frequency ranges,
Then independent DRC calculation process is carried out for each of multiple signal frequency ranges signal frequency range.
Above-mentioned MBDRC scheme needs to distinguish the frequency of audio signal does DRC processing respectively again, if signal frequency range
It is divided into 8 sections, then needs to make 8 frequency band signals respectively DRC processing when signal processing, is i.e. CPU processor is needed while being done 8 times
DRC calculation process.When rushing pass explosion audio of the game such as the source of sound, such as thunderclap opportunity of combat more complex for signal, the source of sound is mixed
Miscellaneous background source of sound has 20 multiple groups, and when being handled by MBDRC, the operand of CPU this moment is 20x8 DRC calculation process, is easy
Promote CPU operand to overload, audio external play signal is caused Caton occur.
Summary of the invention
The present invention provides a kind of acoustic signal processing method and device, broadcasts to promote Audio Signal Processing efficiency and audio
The fluency put.
First aspect of the embodiment of the present invention provides a kind of acoustic signal processing method, comprising:
Obtain reference audio signal, wherein the reference audio signal includes the M group audio signal of M source of sound, the M
For positive integer；
Detect whether the M is greater than or equal to preset threshold；
If detecting, the M is greater than or equal to preset threshold, executes full frequency band dynamic model to the reference audio signal
FDRC operation processed is contained to obtain target audio signal；
Export the target audio signal.
In conjunction with the embodiment of the present invention in a first aspect, first aspect of the embodiment of the present invention the first possible implementation
In, it is described that full frequency band dynamic range control FDRC operation is executed to obtain target audio signal to the reference audio signal, it wraps
It includes:
The M group audio signal for merging the M source of sound is one group of audio signal；
Full frequency band dynamic range control FDRC operation is executed for one group of audio signal to obtain target audio signal.
In conjunction with the embodiment of the present invention in a first aspect, first aspect of the embodiment of the present invention second of possible implementation
In, it is described that full frequency band dynamic range control FDRC operation is executed to obtain target audio signal to the reference audio signal, it wraps
It includes:
Determine M signal frequency range of the M group audio signal；
Dividing the M group audio signal according to the similarity of signal frequency range is N number of audio signal collection, the N for less than
The positive integer of the M；
FDRC operation is executed respectively to obtain N group reference audio signal to N number of audio signal collection；
Merge the N group reference audio signal to obtain target audio signal.
In conjunction with the embodiment of the present invention in a first aspect, first aspect of the embodiment of the present invention the third possible implementation
In, it is described that full frequency band dynamic range control FDRC operation is executed to obtain target audio signal to the reference audio signal, it wraps
It includes:
Extract the audio signal that signal frequency in the reference audio signal belongs to preset signals frequency range；
FDRC operation is executed for the audio signal of extraction to obtain target audio signal.
Appoint in conjunction with the first of first aspect of the embodiment of the present invention and first aspect of the embodiment of the present invention into the third
A kind of possible implementation, in the 4th kind of possible implementation of first aspect of the embodiment of the present invention, the acquisition sound
Frequency signal, comprising:
Obtain the audio signal associated with the currently running application of mobile terminal prestored；
Alternatively,
Obtain the audio signal of network server push.
Implement the embodiment of the present invention, mobile terminal obtains reference audio signal first, wherein the reference audio signal packet
The M group audio signal of M source of sound is included, the M is positive integer, secondly, detect whether the M is greater than or equal to preset threshold, if
It detects that the M is greater than or equal to preset threshold, then FDRC operation is executed to obtain target audio to the reference audio signal
Signal, finally, exporting the target audio signal.Since above-mentioned reference audio signal includes the M group audio signal of M source of sound,
It executes FDRC and operates corresponding operand for the operation less than MBDRC, so be conducive to promote Audio Signal Processing efficiency and sound
The fluency that frequency plays.
Second aspect of the embodiment of the present invention provides a kind of audio signal processor, comprising:
Module is obtained, for obtaining reference audio signal, wherein the reference audio signal includes the M group sound of M source of sound
Frequency signal, the M are positive integer；
Detection module, for detecting whether the M is greater than or equal to preset threshold；
FDRC module, if being executed for detecting that the M is greater than or equal to preset threshold to the reference audio signal
Full frequency band dynamic range control FDRC is operated to obtain target audio signal；
Output module, for exporting the target audio signal.
In conjunction with second aspect of the embodiment of the present invention, in the first possible implementation of second aspect of the embodiment of the present invention
In, the FDRC module includes:
First combining unit, the M group audio signal for merging the M source of sound are one group of audio signal；
First acquisition unit, for for one group of audio signal execute full frequency band dynamic range control FDRC operation with
Obtain target audio signal.
In conjunction with second aspect of the embodiment of the present invention, in second of possible implementation of second aspect of the embodiment of the present invention
In, the FDRC module includes:
Determination unit, for determining M signal frequency range of the M group audio signal；
Division unit is N number of audio signal collection for dividing the M group audio signal according to the similarity of signal frequency range
It closes, the N is the positive integer less than the M；
Second acquisition unit, for executing FDRC operation respectively to N number of audio signal collection to obtain N group with reference to sound
Frequency signal；
Second combining unit, for merging the N group reference audio signal to obtain target audio signal.
In conjunction with second aspect of the embodiment of the present invention, in the third possible implementation of second aspect of the embodiment of the present invention
In, the FDRC module includes:
Extraction unit belongs to the audio letter of preset signals frequency range for extracting signal frequency in the reference audio signal
Number；
Third acquiring unit, for executing FDRC operation for the audio signal extracted to obtain target audio letter
Number.
It is any to the third in conjunction with the first of second aspect of the embodiment of the present invention and second aspect of the embodiment of the present invention
The possible implementation of kind, in the 4th kind of possible implementation of second aspect of the embodiment of the present invention, the acquisition module,
Specifically for obtaining the audio signal associated with the currently running application of mobile terminal prestored；Alternatively, obtaining network service
The audio signal of device push.
Implement the embodiment of the present invention, mobile terminal obtains reference audio signal first, wherein the reference audio signal packet
The M group audio signal of M source of sound is included, the M is positive integer, secondly, detect whether the M is greater than or equal to preset threshold, if
It detects that the M is greater than or equal to preset threshold, then FDRC operation is executed to obtain target audio to the reference audio signal
Signal, finally, exporting the target audio signal.Since above-mentioned reference audio signal includes the M group audio signal of M source of sound,
It executes FDRC and operates corresponding operand for the operation less than MBDRC, so be conducive to promote Audio Signal Processing efficiency and sound
The fluency that frequency plays.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, it should be apparent that, drawings in the following description are some embodiments of the invention, for this field
For those of ordinary skill, without creative efforts, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of flow diagram for acoustic signal processing method that first embodiment of the invention proposes；
Fig. 2 is a kind of flow diagram for acoustic signal processing method that second embodiment of the invention proposes；
Fig. 3 is a kind of flow diagram for acoustic signal processing method that third embodiment of the invention proposes；
Fig. 4 is a kind of flow diagram for acoustic signal processing method that fourth embodiment of the invention proposes；
Fig. 5 is a kind of structural schematic diagram for audio signal processor that fifth embodiment of the invention proposes；
Fig. 6 is a kind of structural schematic diagram for audio signal processor that sixth embodiment of the invention proposes.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The model that the present invention protects all should belong in member's every other embodiment obtained without making creative work
It encloses.
Description and claims of this specification and term " first " in above-mentioned attached drawing, " second " and " third " etc. are
For distinguishing different objects, it is not use to describe a particular order.In addition, term " includes " and " having " and their any changes
Shape, it is intended that cover and non-exclusive include.Such as contain the process, method of a series of steps or units, system, product or
Equipment is not limited to listed step or unit, but optionally further comprising the step of not listing or unit or optional
Ground further includes the other step or units intrinsic for these process, methods, product or equipment.
Referenced herein " embodiment " is it is meant that a particular feature, structure, or characteristic described can wrap in conjunction with the embodiments
Containing at least one embodiment of the present invention.Each position in the description occur the phrase might not each mean it is identical
Embodiment, nor the independent or alternative embodiment with other embodiments mutual exclusion.Those skilled in the art explicitly and
Implicitly understand, embodiment described herein can be combined with other embodiments.
Dynamic range control (Dynamic range control, DRC) described in the embodiment of the present invention is used for audio
The soft pressure limit of output, full frequency band dynamic range control (Full-band DRC) FDRC technology is for audio digital signals processing
In the process, DRC processing is carried out using audio signal as a frequency range, i.e., does not distinguish frequency range.Implement the embodiment of the present invention, it is mobile whole
End obtains reference audio signal first, wherein the reference audio signal includes the M group audio signal of M source of sound, and the M is
Positive integer, secondly, detecting whether the M is greater than or equal to preset threshold, if detecting, the M is greater than or equal to preset threshold,
FDRC operation then is executed to obtain target audio signal, finally, exporting the target audio signal to the reference audio signal.
Since above-mentioned reference audio signal includes the M group audio signal of M source of sound, executing the corresponding operand of FDRC operation will be less than
The operation of MBDRC, so be conducive to promote the fluency that Audio Signal Processing efficiency and audio play.Wherein, above-mentioned mobile whole
End electronic device such as can be smart phone, wearable device, tablet computer, notebook further can also be tool
Loudspeaker, Baffle Box of Bluetooth, wireless sound box and the vehicle-mounted sound box system, etc. of standby special audio processing chip.
With reference to the accompanying drawing and specific embodiment, the technical solution of the embodiment of the present invention is described in detail.
Referring to FIG. 1, Fig. 1 is a kind of flow chart for acoustic signal processing method that first embodiment of the invention proposes.Such as
Shown in figure, the method in the embodiment of the present invention includes:
S101, acquisition for mobile terminal reference audio signal, wherein the reference audio signal includes the M group sound of M source of sound
Frequency signal, the M are positive integer.
Wherein, above-mentioned M for example can be the numerical value such as 1,3,6,9,10.
S102, mobile terminal detect whether the M is greater than or equal to preset threshold.
If S103, detecting that the M is greater than or equal to preset threshold, mobile terminal executes the reference audio signal
Full frequency band dynamic range control FDRC is operated to obtain target audio signal.
It is understood that above-mentioned mobile terminal executes full frequency band dynamic range control FDRC to the reference audio signal
Operation with obtain the concrete mode of target audio signal can be it is diversified.
As an alternative embodiment, the mobile terminal executes full frequency band dynamic model to the reference audio signal
Contain FDRC operation processed may is that with the specific embodiment for obtaining target audio signal
The M group audio signal that the mobile terminal merges the M source of sound is one group of audio signal, and is directed to described one group
Audio signal executes full frequency band dynamic range control FDRC operation to obtain target audio signal.
For example, above-mentioned preset threshold for example can be 4, and the source of sound type in reference audio signal is 10 kinds, i.e.,
The reference audio signal includes 10 groups of audio signals
a1[x11,x12,…,x1n]、a2[x21,x22,…,x2n]、a3[x31,x32,…,x3n]
a4[x41,x42,…,x4n]、a5[x51,x52,…,x5n]、a6[x61,x62,…,x6n]
a7[x71,x72,…,x7n]、a8[x81,x82,…,x8n]、a9[x91,x92,…,x9n]
a10[x101,x102,…,x10n]
Then mobile terminal judges that the value of M is greater than 4, and mobile terminal executes FDRC operation to the reference audio signal with quick
Obtain target audio signal.Specifically above-mentioned 10 groups of audio signals can be synthesized into one group of audio signal
a[x11,x12,…,x1n；x21,x22,…,x2n；x31,x32,…,x3n；x41,x42,…,x4n；x51,
x52,…,x5n；x61,x62,…,x6n；x71,x72,…,x7n；x81,x82,…,x8n；x91,x92,…,x9n；x101,
X102 ..., x10n],
And to this group of audio signal same default frequency range execute dynamic range control (Dynamic range control,
DRC it) operates, in this way, the central processor CPU of mobile terminal only needs to execute above-mentioned set of audio signals 1 DRC operation, and
According to (assuming that audio signal is divided into 5 frequency ranges) in MBDRC processing scheme, when handling above-mentioned audio signal, move
The CPU of dynamic terminal needs to be implemented 5*10=50 DRC operation, it is seen then that above-mentioned mobile terminal executes the reference audio signal
FDRC operates the operand that can save CPU, to be conducive to promote the fluency that Audio Signal Processing efficiency and audio play.
As an alternative embodiment, the mobile terminal executes FDRC operation to the reference audio signal to obtain
Taking the specific embodiment of target audio signal may is that
Mobile terminal determines M signal frequency range of the M group audio signal；
It is N number of audio signal collection that mobile terminal, which divides the M group audio signal according to the similarity of signal frequency range, described
N is the positive integer less than the M；
Mobile terminal executes FDRC operation respectively to N number of audio signal collection to obtain N group reference audio signal；
Mobile terminal merges the N group reference audio signal to obtain target audio signal.
For example, above-mentioned preset threshold for example can be 4, and the source of sound type in reference audio signal is 10 kinds, i.e.,
The reference audio signal includes 10 groups of audio signals
a1[x11,x12,…,x1n]、a2[x21,x22,…,x2n]、a3[x31,x32,…,x3n]
a4[x41,x42,…,x4n]、a5[x51,x52,…,x5n]、a6[x61,x62,…,x6n]
a7[x71,x72,…,x7n]、a8[x81,x82,…,x8n]、a9[x91,x92,…,x9n]
a10[x101,x102,…,x10n]
Then mobile terminal judges that the value of M is greater than 4, and mobile terminal executes FDRC operation to the reference audio signal with quick
Obtain target audio signal.Specifically above-mentioned 10 groups of audio signals can be divided into 3 audio signal collections
B1[x11,x12,…,x1n；x21,x22,…,x2n；x31,x32,…,x3n]
B2[x41,x42,…,x4n；x51,x52,…,x5n；x61,x62,…,x6n]
B3[x71,x72,…,x7n；x81,x82,…,x8n；x91,x92,…,x9n；x101,x102,…,x10n]
And FDRC operation, the then operand of the CPU of mobile terminal are executed respectively to above three audio signal collection respectively
To execute 3 DRC operations, according to MBDRC scheme (assuming that audio signal is divided into 3 frequency ranges), then the CPU of mobile terminal is needed
Execute 3*10=30 DRC operation, it is seen then that above-mentioned mobile terminal executes FDRC operation to the reference audio signal and can save
The operand of CPU, to be conducive to promote the fluency that Audio Signal Processing efficiency and audio play.
As an alternative embodiment, the mobile terminal executes full frequency band dynamic model to the reference audio signal
Contain FDRC operation processed may is that with the specific embodiment for obtaining target audio signal
Mobile terminal extracts the audio signal that signal frequency in the reference audio signal belongs to preset signals frequency range；
Mobile terminal executes FDRC for the audio signal extracted and operates to obtain target audio signal.
For example, above-mentioned preset threshold for example can be 4, and the source of sound type in reference audio signal is 10 kinds, i.e.,
The reference audio signal includes 10 groups of audio signals
a1[x11,x12,…,x1n]、a2[x21,x22,…,x2n]、a3[x31,x32,…,x3n]
a4[x41,x42,…,x4n]、a5[x51,x52,…,x5n]、a6[x61,x62,…,x6n]
a7[x71,x72,…,x7n]、a8[x81,x82,…,x8n]、a9[x91,x92,…,x9n]
a10[x101,x102,…,x10n]
Then mobile terminal judges that the value of M is greater than 4, and mobile terminal extracts signal frequency in above-mentioned 10 groups of audio signals and belongs to
The audio signal of preset signals frequency range, it is assumed that frequency range is there are three signal frequency range C1 { }, C2 { }, C3 { }, and mobile terminal is by above-mentioned 10
Group audio signal is divided into three audio signal collections corresponding with above three signal frequency range according to frequency range ownership, and to this three
A audio signal collection executes FDRC operation (being included into same frequency range) respectively, then the operand of the CPU of mobile terminal is 3*1=3
Secondary DRC operation, according to MBDRC scheme (assuming that audio signal is divided into 3 frequency ranges), then the CPU of mobile terminal is needed to be implemented
3*10=30 DRC operation, it is seen then that above-mentioned mobile terminal, which executes FDRC operation to the reference audio signal, can save CPU's
Operand, to be conducive to promote the fluency that Audio Signal Processing efficiency and audio play.
S104, mobile terminal export the target audio signal.
As an alternative embodiment, the specific embodiment of the acquisition for mobile terminal audio signal may is that
The audio signal associated with the currently running application of mobile terminal that acquisition for mobile terminal prestores；
Alternatively,
The audio signal of acquisition for mobile terminal network server push.
As can be seen that mobile terminal obtains reference audio signal first in the embodiment of the present invention, wherein described to refer to sound
Frequency signal includes the M group audio signal of M source of sound, and the M is positive integer, secondly, detect the M whether be greater than or equal to it is default
Threshold value, if detecting, the M is greater than or equal to preset threshold, executes FDRC operation to the reference audio signal to obtain mesh
Audio signal is marked, finally, exporting the target audio signal.Since above-mentioned reference audio signal includes the M group audio of M source of sound
Signal executes FDRC and operates corresponding operand for the operation less than MBDRC, so be conducive to promote Audio Signal Processing efficiency
The fluency played with audio.
Referring to FIG. 2, Fig. 2 is a kind of flow chart for acoustic signal processing method that second embodiment of the invention proposes.Such as
Shown in figure, the method in the embodiment of the present invention includes:
S201, acquisition for mobile terminal reference audio signal, wherein the reference audio signal includes the M group sound of M source of sound
Frequency signal, the M are positive integer.Wherein, above-mentioned M for example can be the numerical value such as 1,3,6,9,10.
As an alternative embodiment, the specific embodiment of the acquisition for mobile terminal audio signal may is that
The audio signal associated with the currently running application of mobile terminal that acquisition for mobile terminal prestores；
Alternatively,
The audio signal of acquisition for mobile terminal network server push.
S202, mobile terminal detect whether the M is greater than or equal to preset threshold.
If S203, detecting that the M is greater than or equal to preset threshold, mobile terminal merges the M group audio of the M source of sound
Signal is one group of audio signal；
S204, mobile terminal execute full frequency band dynamic range control FDRC operation for one group of audio signal to obtain
Target audio signal.
For example, above-mentioned preset threshold for example can be 4, and the source of sound type in reference audio signal is 10 kinds, i.e.,
The reference audio signal includes 10 groups of audio signals
a1[x11,x12,…,x1n]、a2[x21,x22,…,x2n]、a3[x31,x32,…,x3n]
a4[x41,x42,…,x4n]、a5[x51,x52,…,x5n]、a6[x61,x62,…,x6n]
a7[x71,x72,…,x7n]、a8[x81,x82,…,x8n]、a9[x91,x92,…,x9n]
a10[x101,x102,…,x10n]
Then mobile terminal judges that the value of M is greater than 4, and mobile terminal executes FDRC operation to the reference audio signal with quick
Obtain target audio signal.Specifically above-mentioned 10 groups of audio signals can be synthesized into one group of audio signal
a[x11,x12,…,x1n；x21,x22,…,x2n；x31,x32,…,x3n；x41,x42,…,x4n；x51,
x52,…,x5n；x61,x62,…,x6n；x71,x72,…,x7n；x81,x82,…,x8n；x91,x92,…,x9n；x101,
X102 ..., x10n],
And to this group of audio signal same default frequency range execute dynamic range control (Dynamic range control,
DRC it) operates, in this way, the central processor CPU of mobile terminal only needs to execute above-mentioned set of audio signals 1 DRC operation, and
According to (assuming that audio signal is divided into 5 frequency ranges) in MBDRC processing scheme, when handling above-mentioned audio signal, move
The CPU of dynamic terminal needs to be implemented 5*10=50 DRC operation, it is seen then that above-mentioned mobile terminal executes the reference audio signal
FDRC operates the operand that can save CPU, to be conducive to promote the fluency that Audio Signal Processing efficiency and audio play.
S205, mobile terminal export the target audio signal.
As can be seen that mobile terminal obtains reference audio signal first in the embodiment of the present invention, wherein described to refer to sound
Frequency signal includes the M group audio signal of M source of sound, and the M is positive integer, secondly, detect the M whether be greater than or equal to it is default
Threshold value, if detecting, the M is greater than or equal to preset threshold, executes FDRC operation to the reference audio signal to obtain mesh
Audio signal is marked, finally, exporting the target audio signal.Since above-mentioned reference audio signal includes the M group audio of M source of sound
Signal executes FDRC and operates corresponding operand for the operation less than MBDRC, so be conducive to promote Audio Signal Processing efficiency
The fluency played with audio.
Referring to FIG. 3, Fig. 3 is a kind of flow chart for acoustic signal processing method that third embodiment of the invention proposes.Such as
Shown in figure, the method in the embodiment of the present invention includes:
S301, acquisition for mobile terminal reference audio signal, wherein the reference audio signal includes the M group sound of M source of sound
Frequency signal, the M are positive integer.Wherein, above-mentioned M for example can be the numerical value such as 1,3,6,9,10.
As an alternative embodiment, the specific embodiment of the acquisition for mobile terminal audio signal may is that
The audio signal associated with the currently running application of mobile terminal that acquisition for mobile terminal prestores；
Alternatively,
The audio signal of acquisition for mobile terminal network server push.
S302, mobile terminal detect whether the M is greater than or equal to preset threshold.
If S303, detecting that the M is greater than or equal to preset threshold, mobile terminal determines M of the M group audio signal
Signal frequency range.
It is N number of audio signal collection that S304, mobile terminal, which divide the M group audio signal according to the similarity of signal frequency range,
It closes, the N is the positive integer less than the M.
S305, mobile terminal execute FDRC operation respectively to N number of audio signal collection to obtain N group reference audio letter
Number.
S306, mobile terminal merge the N group reference audio signal to obtain target audio signal.
For example, above-mentioned preset threshold for example can be 4, and the source of sound type in reference audio signal is 10 kinds, i.e.,
The reference audio signal includes 10 groups of audio signals
a1[x11,x12,…,x1n]、a2[x21,x22,…,x2n]、a3[x31,x32,…,x3n]
a4[x41,x42,…,x4n]、a5[x51,x52,…,x5n]、a6[x61,x62,…,x6n]
a7[x71,x72,…,x7n]、a8[x81,x82,…,x8n]、a9[x91,x92,…,x9n]
a10[x101,x102,…,x10n]
Then mobile terminal judges that the value of M is greater than 4, and mobile terminal executes FDRC operation to the reference audio signal with quick
Obtain target audio signal.Specifically above-mentioned 10 groups of audio signals can be divided into 3 audio signal collections
B1[x11,x12,…,x1n；x21,x22,…,x2n；x31,x32,…,x3n]
B2[x41,x42,…,x4n；x51,x52,…,x5n；x61,x62,…,x6n]
B3[x71,x72,…,x7n；x81,x82,…,x8n；x91,x92,…,x9n；x101,x102,…,x10n]
And FDRC operation, the then operand of the CPU of mobile terminal are executed respectively to above three audio signal collection respectively
To execute 3 DRC operations, according to MBDRC scheme (assuming that audio signal is divided into 3 frequency ranges), then the CPU of mobile terminal is needed
Execute 3*10=30 DRC operation, it is seen then that above-mentioned mobile terminal executes FDRC operation to the reference audio signal and can save
The operand of CPU, to be conducive to promote the fluency that Audio Signal Processing efficiency and audio play.
S307, mobile terminal export the target audio signal.
As can be seen that mobile terminal obtains reference audio signal first in the embodiment of the present invention, wherein described to refer to sound
Frequency signal includes the M group audio signal of M source of sound, and the M is positive integer, secondly, detect the M whether be greater than or equal to it is default
Threshold value, if detecting, the M is greater than or equal to preset threshold, executes FDRC operation to the reference audio signal to obtain mesh
Audio signal is marked, finally, exporting the target audio signal.Since above-mentioned reference audio signal includes the M group audio of M source of sound
Signal executes FDRC and operates corresponding operand for the operation less than MBDRC, so be conducive to promote Audio Signal Processing efficiency
The fluency played with audio.
Referring to FIG. 4, Fig. 4 is a kind of flow chart for acoustic signal processing method that fourth embodiment of the invention proposes.Such as
Shown in figure, the method in the embodiment of the present invention includes:
S401, acquisition for mobile terminal reference audio signal, wherein the reference audio signal includes the M group sound of M source of sound
Frequency signal, the M are positive integer.Wherein, above-mentioned M for example can be the numerical value such as 1,3,6,9,10.
As an alternative embodiment, the specific embodiment of the acquisition for mobile terminal audio signal may is that
The audio signal associated with the currently running application of mobile terminal that acquisition for mobile terminal prestores；
Alternatively,
The audio signal of acquisition for mobile terminal network server push.
S402, mobile terminal detect whether the M is greater than or equal to preset threshold.
If S403, detecting that the M is greater than or equal to preset threshold, mobile terminal extracts to be believed in the reference audio signal
Number frequency belongs to the audio signal of preset signals frequency range.
S404, mobile terminal execute FDRC for the audio signal extracted and operate to obtain target audio signal.
For example, above-mentioned preset threshold for example can be 4, and the source of sound type in reference audio signal is 10 kinds, i.e.,
The reference audio signal includes 10 groups of audio signals
a1[x11,x12,…,x1n]、a2[x21,x22,…,x2n]、a3[x31,x32,…,x3n]
a4[x41,x42,…,x4n]、a5[x51,x52,…,x5n]、a6[x61,x62,…,x6n]
a7[x71,x72,…,x7n]、a8[x81,x82,…,x8n]、a9[x91,x92,…,x9n]
a10[x101,x102,…,x10n]
Then mobile terminal judges that the value of M is greater than 4, and mobile terminal extracts signal frequency in above-mentioned 10 groups of audio signals and belongs to
The audio signal of preset signals frequency range, it is assumed that frequency range is there are three signal frequency range C1 { }, C2 { }, C3 { }, and mobile terminal is by above-mentioned 10
Group audio signal is divided into three audio signal collections corresponding with above three signal frequency range according to frequency range ownership, and to this three
A audio signal collection executes FDRC operation (being included into same frequency range) respectively, then the operand of the CPU of mobile terminal is 3*1=3
Secondary DRC operation, according to MBDRC scheme (assuming that audio signal is divided into 3 frequency ranges), then the CPU of mobile terminal is needed to be implemented
3*10=30 DRC operation, it is seen then that above-mentioned mobile terminal, which executes FDRC operation to the reference audio signal, can save CPU's
Operand, to be conducive to promote the fluency that Audio Signal Processing efficiency and audio play.
S405, mobile terminal export the target audio signal.
As can be seen that mobile terminal obtains reference audio signal first in the embodiment of the present invention, wherein described to refer to sound
Frequency signal includes the M group audio signal of M source of sound, and the M is positive integer, secondly, detect the M whether be greater than or equal to it is default
Threshold value, if detecting, the M is greater than or equal to preset threshold, executes FDRC operation to the reference audio signal to obtain mesh
Audio signal is marked, finally, exporting the target audio signal.Since above-mentioned reference audio signal includes the M group audio of M source of sound
Signal executes FDRC and operates corresponding operand for the operation less than MBDRC, so be conducive to promote Audio Signal Processing efficiency
The fluency played with audio.
The following is an embodiment of the apparatus of the present invention, and apparatus of the present invention embodiment is for executing embodiment of the present invention method one to four
The method of realization, for ease of description, only parts related to embodiments of the present invention are shown, and particular technique details does not disclose
, the embodiment of the present invention one is please referred to example IV.
Referring to FIG. 5, Fig. 5 is a kind of structure chart for audio signal processor that fifth embodiment of the invention proposes.Such as
Shown in Fig. 5, the device in the embodiment of the present invention includes:
Module 501 is obtained, for obtaining reference audio signal, wherein the reference audio signal includes the M of M source of sound
Group audio signal, the M are positive integer；
Detection module 502, for detecting whether the M is greater than or equal to preset threshold；
FDRC module 503, if for detecting that the M is greater than or equal to preset threshold, to the reference audio signal
Full frequency band dynamic range control FDRC operation is executed to obtain target audio signal；
Output module 504, for exporting the target audio signal.
As an alternative embodiment, the FDRC module may further include:
First combining unit, the M group audio signal for merging the M source of sound are one group of audio signal；
First acquisition unit, for for one group of audio signal execute full frequency band dynamic range control FDRC operation with
Obtain target audio signal.
As an alternative embodiment, the FDRC module may further include:
Determination unit, for determining M signal frequency range of the M group audio signal；
Division unit is N number of audio signal collection for dividing the M group audio signal according to the similarity of signal frequency range
It closes, the N is the positive integer less than the M；
Second acquisition unit, for executing FDRC operation respectively to N number of audio signal collection to obtain N group with reference to sound
Frequency signal；
Second combining unit, for merging the N group reference audio signal to obtain target audio signal.
As an alternative embodiment, the FDRC module may further include:
Extraction unit belongs to the audio letter of preset signals frequency range for extracting signal frequency in the reference audio signal
Number；
Third acquiring unit, for executing FDRC operation for the audio signal extracted to obtain target audio letter
Number.
As an alternative embodiment, the acquisition module, prestores current with mobile terminal specifically for acquisition
Operation using associated audio signal；Alternatively, obtaining the audio signal of network server push.
It is understood that the function of each module of the audio signal processor of the present embodiment can be according to above method reality
The method specific implementation in example is applied, specific implementation process is referred to the associated description of above method embodiment, herein no longer
It repeats.
As can be seen that mobile terminal obtains reference audio signal first in the embodiment of the present invention, wherein described to refer to sound
Frequency signal includes the M group audio signal of M source of sound, and the M is positive integer, secondly, detect the M whether be greater than or equal to it is default
Threshold value, if detecting, the M is greater than or equal to preset threshold, executes FDRC operation to the reference audio signal to obtain mesh
Audio signal is marked, finally, exporting the target audio signal.Since above-mentioned reference audio signal includes the M group audio of M source of sound
Signal executes FDRC and operates corresponding operand for the operation less than MBDRC, so be conducive to promote Audio Signal Processing efficiency
The fluency played with audio.
Fig. 6 is the structural schematic diagram for another mobile terminal that sixth embodiment of the invention proposes.As shown, the device
It may include: at least one processor 601, such as CPU, at least one receiver 603, at least one processor 604, at least one
A transmitter 605, at least one communication bus 602.Wherein, communication bus 602 is logical for realizing the connection between these components
Letter.Wherein, the receiver 603 of device and transmitter 605 can be wired sending port in the embodiment of the present invention, or nothing
Line equipment, for example including antenna assembly, for carrying out the communication of signaling or data with other node devices.Memory 604 can be with
It is high speed RAM memory, is also possible to non-labile memory (non-volatile memory), for example, at least a magnetic
Disk storage.Memory 604 optionally can also be that at least one is located remotely from the storage device of aforementioned processor 601.Storage
Store batch processing code in device 604, and processor 601 is for calling the program code stored in memory, for execute with
Lower operation:
The processor 601 obtains reference audio signal, wherein the reference audio signal includes the M group sound of M source of sound
Frequency signal, the M are positive integer.
The processor 601 detects whether the M is greater than or equal to preset threshold.
If the processor 601 detects that the M is greater than or equal to preset threshold, the reference audio signal is executed
Full frequency band dynamic range control FDRC is operated to obtain target audio signal.
The processor 601 exports the target audio signal.
As an alternative embodiment, the processor 601 executes full frequency band dynamic to the reference audio signal
Scope control FDRC operation may is that with the specific embodiment for obtaining target audio signal
The M group audio signal that the processor 601 merges the M source of sound is one group of audio signal；
The processor 601 executes full frequency band dynamic range control FDRC operation for one group of audio signal to obtain
Target audio signal.
As an alternative embodiment, the processor 601 executes full frequency band dynamic to the reference audio signal
Scope control FDRC operation may is that with the specific embodiment for obtaining target audio signal
The processor 601 determines M signal frequency range of the M group audio signal；
It is N number of audio signal collection that the processor 601, which divides the M group audio signal according to the similarity of signal frequency range,
It closes, the N is the positive integer less than the M；
The processor 601 executes FDRC operation respectively to N number of audio signal collection to obtain N group reference audio letter
Number；
The processor 601 merges the N group reference audio signal to obtain target audio signal.
As an alternative embodiment, the processor 601 executes full frequency band dynamic to the reference audio signal
Scope control FDRC operation may is that with the specific embodiment for obtaining target audio signal
The processor 601 extracts the audio letter that signal frequency in the reference audio signal belongs to preset signals frequency range
Number；
The processor 601 executes FDRC for the audio signal extracted and operates to obtain target audio signal.
As an alternative embodiment, the specific embodiment that the processor 601 obtains audio signal may is that
The processor 601 obtains the audio signal associated with the currently running application of mobile terminal prestored；
Alternatively,
The processor 601 obtains the audio signal of network server push.
It is understood that the function of each module of the audio signal processor of the present embodiment can be according to above method reality
The method specific implementation in example is applied, specific implementation process is referred to the associated description of above method embodiment, herein no longer
It repeats.
As can be seen that mobile terminal obtains reference audio signal first in the embodiment of the present invention, wherein described to refer to sound
Frequency signal includes the M group audio signal of M source of sound, and the M is positive integer, secondly, detect the M whether be greater than or equal to it is default
Threshold value, if detecting, the M is greater than or equal to preset threshold, executes FDRC operation to the reference audio signal to obtain mesh
Audio signal is marked, finally, exporting the target audio signal.Since above-mentioned reference audio signal includes the M group audio of M source of sound
Signal executes FDRC and operates corresponding operand for the operation less than MBDRC, so be conducive to promote Audio Signal Processing efficiency
The fluency played with audio.
It should be noted that for simple description, therefore, it is stated as a systems for each embodiment of the method above-mentioned
The combination of actions of column, but those skilled in the art should understand that, the present invention is not limited by the sequence of acts described, because
For according to the present invention, certain some step can be performed in other orders or simultaneously.Secondly, those skilled in the art also should
Know, the embodiments described in the specification are all preferred embodiments, related actions and modules not necessarily this hair
Necessary to bright.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, is not described in some embodiment
Part, reference can be made to the related descriptions of other embodiments.
Those of ordinary skill in the art will appreciate that all or part of the steps in the various methods of above-described embodiment is can
It is completed with instructing relevant hardware by program, which can be stored in a computer readable storage medium, storage
Medium may include: flash disk, read-only memory (English: Read-Only Memory, abbreviation: ROM), random access device (English
Text: Random Access Memory, referred to as: RAM), disk or CD etc..
It is provided for the embodiments of the invention peak value smoothing method above and relevant device is described in detail, herein
Apply that a specific example illustrates the principle and implementation of the invention, the explanation of above example is only intended to help
Understand method and its core concept of the invention；At the same time, for those skilled in the art, according to the thought of the present invention,
There will be changes in the specific implementation manner and application range, in conclusion the content of the present specification should not be construed as to this
The limitation of invention.
Claims (6)
1. a kind of acoustic signal processing method characterized by comprising
Obtain reference audio signal, wherein the reference audio signal includes the M group audio signal of M source of sound, and the M is positive
Integer；
Detect whether the M is greater than or equal to preset threshold；
If detecting, the M is greater than or equal to preset threshold, executes the control of full frequency band dynamic range to the reference audio signal
FDRC operation processed is to obtain target audio signal；
Export the target audio signal；
It is described that full frequency band dynamic range control FDRC operation is executed to obtain target audio signal to the reference audio signal, it wraps
It includes: determining M signal frequency range of the M group audio signal；Dividing the M group audio signal according to the similarity of signal frequency range is
N number of audio signal collection, the N are the positive integer less than the M；FDRC behaviour is executed respectively to N number of audio signal collection
Make to obtain N group reference audio signal；Merge the N group reference audio signal to obtain target audio signal.
2. the method according to claim 1, wherein the acquisition audio signal, comprising:
Obtain the audio signal associated with the currently running application of mobile terminal prestored；
Alternatively,
Obtain the audio signal of network server push.
3. a kind of audio signal processor characterized by comprising
Module is obtained, for obtaining reference audio signal, wherein the reference audio signal includes the M group audio letter of M source of sound
Number, the M is positive integer；
Detection module, for detecting whether the M is greater than or equal to preset threshold；
FDRC module, if executing full range to the reference audio signal for detecting that the M is greater than or equal to preset threshold
Section dynamic range control FDRC operation is to obtain target audio signal；
Output module, for exporting the target audio signal；
The FDRC module includes:
Determination unit, for determining M signal frequency range of the M group audio signal；
Division unit is N number of audio signal collection, institute for dividing the M group audio signal according to the similarity of signal frequency range
Stating N is the positive integer less than the M；
Second acquisition unit, for executing FDRC operation respectively to N number of audio signal collection to obtain N group reference audio letter
Number；
Second combining unit, for merging the N group reference audio signal to obtain target audio signal.
4. device according to claim 3, which is characterized in that
The acquisition module, specifically for obtaining the audio signal associated with the currently running application of mobile terminal prestored；
Alternatively, obtaining the audio signal of network server push.
5. a kind of mobile terminal, which is characterized in that including processor, memory, receiver, transmitter, communication bus, Yi Jiyi
A or multiple programs, one or more of programs are stored in the memory, and are configured to be held by the processor
Row, described program are included the steps that for executing the instruction in method according to claim 1 or 2.
6. a kind of computer readable storage medium, which is characterized in that storage is used for the computer program of electronic data interchange,
In, it is method according to claim 1 or 2 that the computer program executes computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510632668.2A CN105551500B (en) | 2015-09-29 | 2015-09-29 | A kind of acoustic signal processing method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510632668.2A CN105551500B (en) | 2015-09-29 | 2015-09-29 | A kind of acoustic signal processing method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105551500A CN105551500A (en) | 2016-05-04 |
| CN105551500B true CN105551500B (en) | 2019-06-11 |
Family
ID=55830648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510632668.2A Active CN105551500B (en) | 2015-09-29 | 2015-09-29 | A kind of acoustic signal processing method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105551500B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106028253B (en) * | 2016-06-22 | 2018-12-11 | 腾讯科技（深圳）有限公司 | The method and apparatus of mixed signal under generation |
| CN107071634B (en) | 2017-03-03 | 2023-11-10 | Gn听力公司 | Signal processing device, method and loudspeaker |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2147165A (en) * | 1983-09-21 | 1985-05-01 | British Broadcasting Corp | Dynamic range control |
| CN101167250A (en) * | 2004-04-23 | 2008-04-23 | 诺基亚公司 | Dynamic range control and equalization of digital audio using warped processing |
| EP2217004A1 (en) * | 2009-02-09 | 2010-08-11 | Broadcom Corporation | Method and system for dynamic range control in an audio processing system |
| CN104811154A (en) * | 2014-01-28 | 2015-07-29 | 宏达国际电子股份有限公司 | Sound producing system and audio amplifying method thereof |
-
2015
- 2015-09-29 CN CN201510632668.2A patent/CN105551500B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2147165A (en) * | 1983-09-21 | 1985-05-01 | British Broadcasting Corp | Dynamic range control |
| CN101167250A (en) * | 2004-04-23 | 2008-04-23 | 诺基亚公司 | Dynamic range control and equalization of digital audio using warped processing |
| EP2217004A1 (en) * | 2009-02-09 | 2010-08-11 | Broadcom Corporation | Method and system for dynamic range control in an audio processing system |
| CN101800051A (en) * | 2009-02-09 | 2010-08-11 | 美国博通公司 | The method of processing signals and the system of audio signal |
| CN104811154A (en) * | 2014-01-28 | 2015-07-29 | 宏达国际电子股份有限公司 | Sound producing system and audio amplifying method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105551500A (en) | 2016-05-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107256707B (en) | Voice recognition method, system and terminal equipment | |
| CN107610698A (en) | A kind of method for realizing Voice command, robot and computer-readable recording medium | |
| CN107247540B (en) | Application icon adjusting method and device | |
| CN107733984A (en) | A kind of method, terminal and computer-readable recording medium for pushing screen locking information | |
| CN107315779A (en) | Log analysis method and system | |
| CN105487760A (en) | Method and device for displaying message and electronic equipment | |
| CN109243425A (en) | Speech recognition test method, device, system, computer equipment and storage medium | |
| CN105549847B (en) | A kind of image display method and user terminal at playback of songs interface | |
| CN107193598A (en) | One kind application startup method, mobile terminal and computer-readable recording medium | |
| CN109684311A (en) | Abnormal deviation data examination method and device | |
| CN107506494B (en) | Document handling method, mobile terminal and computer readable storage medium | |
| CN105551500B (en) | A kind of acoustic signal processing method and device | |
| CN107800776A (en) | A kind of document handling method, terminal, server and computer-readable medium | |
| CN105511849A (en) | Method, device and system for application program display | |
| CN110189752A (en) | A kind of mostly recognition methods of intention and device, terminal device | |
| US20190196794A1 (en) | Visual programming method, system and terminal device | |
| CN108920704A (en) | File access pattern method, file restoring device and mobile terminal | |
| CN110874301A (en) | Method and device for acquiring program pause information | |
| CN112256911A (en) | Audio matching method, device and equipment | |
| CN105392083B (en) | A kind of MPP speakers switching method and access controller | |
| CN106095400A (en) | A kind of application program method for down loading and terminal, communication equipment | |
| CN201796356U (en) | Computer capable of recognizing voice commands | |
| CN104581147B (en) | HDMI and MIPI functions mutually testing method and device | |
| CN106658101A (en) | Method, device and system for controlling program broadcasting | |
| CN108419199A (en) | Fault detection method, device and the equipment of acoustic signals, readable medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |