CN102780958B - It is built-in with active audio amplifier and the speaker system calibration method of DSP - Google Patents
It is built-in with active audio amplifier and the speaker system calibration method of DSP Download PDFInfo
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- CN102780958B CN102780958B CN201210281903.2A CN201210281903A CN102780958B CN 102780958 B CN102780958 B CN 102780958B CN 201210281903 A CN201210281903 A CN 201210281903A CN 102780958 B CN102780958 B CN 102780958B
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Abstract
The present invention relates to speaker control technology, a kind of active audio amplifier being built-in with DSP and speaker system calibration method.This active audio amplifier includes signal input unit, digital signal processor, multiple power amplifier unit and multiple loudspeaker unit, each power amplifier unit is connected with the loudspeaker unit matched, this digital signal processor is wherein provided with array layer DSP parameter, therefore can simplify speaker system debugging correction work amount, and ensure that speaker system debugs result.This bearing calibration is the speaker system formed for above-mentioned active audio amplifier and implements, traditional practice accurately debugging each active audio amplifier has been abandoned in this bearing calibration, multiple active audio amplifiers are controlled by array layer DSP parameter synchronization, simplify complexity and the workload of system debug, greatly improve the work efficiency of debugging correction.
Description
Technical field
The present invention relates to speaker control technology, the active audio amplifier of a kind of DSP of being built-in with and raising one's voice
Device system compensation method.
Background technology
The audio amplifier (also referred to as active audio amplifier) of embedded digital signal processor (DSP) and power amplifier can lead to
Cross digital signal processor and input audio signal carried out the operations such as EQ adjustment, time delay, amplitude limit and frequency dividing,
Audio amplifier is made to reach optimum Working.
As follows to the conventional method of adjustment of the speaker system of active audio amplifier composition at present: (1) first adjusts
The input processing parameter of the digital signal processor of single audio amplifier and output processing parameter (the above sound of two divided-frequency
Case), such as EQ, time delay, amplitude limit etc.；(2) effect of speaker system is tested, by rule of thumb
With refinement test data further, the digital signal processor parameter of relevant audio amplifier is adjusted；(3) again
The whole structure of speaker system is tested, according to test result, the numeral letter to active audio amplifier again
Number processor parameter is adjusted.It is to say, for realizing preferably system acoustic effect, need constantly
According to overall acoustic efficiency, repeatedly the parameter of the digital signal processor of each audio amplifier is adjusted.
The debugging bearing calibration of this speaker system (speaker system) there is problems in that
(1) system debug correct operation is loaded down with trivial details, complicated, and workload is big.Owing to affecting system acoustic effect
The factor of fruit is a lot, adjusts which audio amplifier, and which parameter of adjustment audio amplifier, there is no a fixed pattern, only
Can engineering staff can only audio amplifier or region-by-region (audio amplifier in region is also to be adjusted one by one) adjust one by one
Whole, again each audio amplifier is adjusted further according to test result after adjustment, i.e. needs to be repeated continuously measurement
The acoustic efficiency of system also adjusts each audio amplifier, can be only achieved preferably system sound effect.Original audio amplifier one by one enters
The workload of Row sum-equal matrix is the biggest, and also needs to now to repeat many times that (number of times is unknown, time spent
Between and required workload be the hugest.For layman, speaker system is adjusted
The task that examination correction has been practically impossible to.
(2) system is even across repeatedly adjusting correction, but still it cannot be guaranteed that can obtain preferably acoustics
Effect.As it has been described above, the factor affecting acoustic efficiency is a lot, many times, for time-consuming, engineering people
Member the most rule of thumb judges which should adjust which parameter of which audio amplifier.Even if engineering staff is one by one
Audio amplifier is adjusted, but owing to speaker system is a systematic engineering of business, can mutual shadow between each audio amplifier
Ring, and engineering staff be being adjusted each audio amplifier when, be difficult to prediction and judge the audio amplifier after adjusting,
Other audio amplifiers can be produced what impact (or what impact other audio amplifiers can produce to this audio amplifier),
Therefore can only estimate by rule of thumb.Therefore, this debugging bearing calibration, much less ordinary person, even if
It is for the personnel through professional training, also cannot ensure that sound can obtain gratifying system sound effect.
Therefore provide one can simplify speaker system audio amplifier debugging correct operation, improve debugging efficiency,
And safeguards system debugging effect is a technical problem urgently to be resolved hurrily.Solve this technical barrier for promoting
Development and the application of Specialty Hi-Fi technology have important function.
Summary of the invention
The first technical problem that the present invention solves is to provide a kind of active audio amplifier being built-in with DSP, with letter
Change the debugging correct operation of the speaker system being made up of this active audio amplifier, improve debugging efficiency, and ensure
System debug effect.
The second technical problem that the present invention solves is to provide a kind of speaker system calibration method, to simplify
The debugging correct operation of speaker system, improves debugging efficiency, and safeguards system debugging effect.
For solving above-mentioned first technical problem, the present invention uses the first technical scheme to be:
A kind of active audio amplifier being built-in with DSP, it include signal input unit, digital signal processor,
Multiple power amplifier units and multiple loudspeaker unit, each power amplifier unit is connected with the loudspeaker unit matched；
This signal input unit is for receiving the audio signal of the outside input of audio amplifier, and transmits to this numeral
Signal processor；
This digital signal processor is provided with data memory module, and in this data memory module, storage has one group
Input processing parameter and corresponding with each power amplifier unit respectively many groups output processing parameters, often group output processes
Parameter includes one or more DSP parameter；
This group input processing parameter includes that multiple entity DSP data, each entity DSP packet contain
An audio amplifier layer DSP parameter corresponding with the kind of this entity DSP data and an array layer DSP parameter,
This audio amplifier layer DSP parameter is the DSP parameter arranged for this active audio amplifier, and this array layer DSP parameter is
The DSP parameter arranged for each audio amplifier member of array group belonging to this active audio amplifier, this array group includes
One or more active audio amplifiers；
This digital signal processor also includes input processing module and multiple output processing module,
This input processing module includes the sound effect processor of multiple series connection, each sound effect processor respectively with
Each DSP parameter one_to_one corresponding of this group input processing parameter, each sound effect processor is for according to correspondence
DSP parameter carries out corresponding signal processing operations to audio signal；This input processing module also includes that signal divides
Road module, they are corresponding with each power amplifier unit many for the audio signal after this resume module being divided into
Road output audio signal；
Each output processes the corresponding road output audio signal of mould, and each output processing module includes multiple
The sound effect processor of series connection, each sound effect processor exports corresponding to audio signal with this road respectively
Each DSP parameter one_to_one corresponding of group output processing parameter, each sound effect processor is for according to correspondence
A corresponding road output audio signal is processed by DSP parameter；
Each power amplifier unit is for receiving the corresponding road output processed through corresponding output processing module
Audio signal, and Jiang Gai mono-tunnel audio signal be amplified process after transmit to corresponding loudspeaker unit.
For solving above-mentioned second technical problem, the present invention uses the second technical scheme to be:
A kind of speaker system calibration method, this speaker system include multiple such as the first technical scheme or
Active audio amplifier described in its improvement project, this speaker system is provided with one or more array group, and/or one
Or multiple system group, this bearing calibration comprises the following steps:
Step S10: start；
Step S20: if selecting the audio amplifier layer DSP parameter of amendment input processing parameter, then perform step
S21；If selecting the array layer DSP parameter of amendment input processing parameter, then perform step S22；If selecting
The system layer DSP parameter of amendment input processing parameter, then perform step S23；If selecting amendment output to process
Parameter, then perform step S24；
Step S21: the audio amplifier layer DSP parameter that amendment is selected, and amended data are preserved to being somebody's turn to do
Active audio amplifier belonging to audio amplifier layer DSP parameter；Perform step S20 or step S30；
Step S22: the array layer DSP parameter that amendment is selected, if belonging to this array layer DSP parameter
Active audio amplifier is not belonging to the audio amplifier member of array group, then amended data will preserve to this active audio amplifier
In respective array layer DSP parameter；If the active audio amplifier belonging to this array layer DSP parameter belongs to some array
The audio amplifier member of group, then amended data will preserve respectively to this array group each audio amplifier member couple
In the array layer DSP parameter answered；Perform step S20 or step S30；
Step S23: the system layer DSP parameter that amendment is selected, if belonging to this system layer DSP parameter
Active audio amplifier is not belonging to the audio amplifier member of system group, then amended data will preserve to this active audio amplifier
In corresponding system layer DSP parameter；If this active audio amplifier belonging to system layer DSP parameter belongs to some system
The audio amplifier member of group, then amended data will preserve respectively to this system group each audio amplifier member couple
In the system layer DSP parameter answered；Perform step S20 or step S30；
Amended data are preserved to this DSP parameter by step S24: the DSP parameter that amendment is selected
In affiliated active audio amplifier in the corresponding DSP parameter of corresponding one group of output processing parameter；
Step S30: terminate.
Compared with prior art, provide the benefit that:
The sound effect of whole speaker system is if desired optimized by prior art, needs each
Audio amplifier adjusts correction the most repeatedly, but also array belonging to this audio amplifier after the indivedual audio amplifier of unpredictable adjustment
How the acoustics of group and whole speaker system can change, add system debug correction difficulty and
Complexity, therefore the speaker system of prior art debugs not only difficulty relatively greatly, needs very professional sound
Ring technical staff to operate, and the workload debugged is very big, and debugging effect also cannot ensure.
Active audio amplifier based on this technology and speaker system calibration method thereof, engineers and technicians are permissible
Give up the traditional method accurately adjusting each audio amplifier, then by the basis of each audio amplifier of basic correction, with
The audio amplifier member of each array group is unified debugging correction for unit by group so that each array group and whole
The acoustics (transmission frequency characteristic) of speaker system reaches the use requirement of system, optimizes to greatest extent
The overall acoustic efficiency of speaker system, but the difficulty of speaker system debugging and workload are greatly reduced.
This technology is to think deeply the debugging correction work of whole audio amplifier, the most fully from the angle of system use
Consider audio amplifier self-characteristic, take into full account again between each audio amplifier of same array group, same system each
Interactional factor between individual array group, by single audio amplifier DSP parameter adjustment, array group DSP parameter
Adjust and system group DSP parameter adjustment, from overall three of audio amplifier itself, speaker array group and speaker system
The DSP parameter of each audio amplifier is adjusted by aspect, and this adjustment seems accurate not, is not each sound
Case all can be debugged to optimum state, but but can obtain this speaker system just of optimal system sound effect
Unite actually used required.
Sum it up, this technology by the input processing of audio amplifier digital signal processor is divided into audio amplifier,
Array group two-layer DSP process, is possible not only to simplify the difficulty of speaker system debugging correction, reduces workload,
But also the system sound effect making us more being satisfied with can be obtained.
Accompanying drawing explanation
Fig. 1 is the active audio amplifier structural representation (as a example by two divided-frequency audio amplifier) of embodiment one；
Fig. 2 is the structural representation of the digital signal processor of embodiment one；
Fig. 3 is the schematic diagram of the digital signal processor one of which concrete structure of embodiment one；
Fig. 4 is the schematic diagram of the digital signal processor one of which concrete structure of embodiment two；
Fig. 5 is the schematic flow sheet of the speaker system calibration method of embodiment three；
Fig. 6 is the schematic flow sheet of the speaker system calibration method of embodiment four.
Detailed description of the invention
Below in conjunction with the accompanying drawings embodiments of the invention are further described.
Embodiment one
As it is shown in figure 1, the active audio amplifier being built-in with DSP of the present embodiment include signal input unit 11,
Digital signal processor 12, multiple power amplifier unit 13 and multiple loudspeaker unit 14, each power amplifier unit 13
Being connected with the loudspeaker unit 14 matched, loudspeaker unit 14 can be made up of one or more speakers.
This signal input unit 11 is for receiving the audio signal of the outside input of audio amplifier, and transmits to this digital signal
Reason device 12.
As in figure 2 it is shown, this digital signal processor 12 is provided with data memory module 124, these data are deposited
Storage module 124 in storage have one group of input processing parameter and corresponding with each power amplifier unit 13 respectively many groups defeated
Going out processing parameter, often group output processing parameter includes one or more DSP parameter.
This group input processing parameter includes multiple entity DSP data, and the kind of entity DSP data is not
Limiting, input processing parameter can comprise the entity DSP data of multiple identical type, it is also possible to comprises the most not
Identical multiple entity DSP data.Each entity DSP packet contains and the kind of this entity DSP data
An audio amplifier layer DSP parameter that class is corresponding and an array layer DSP parameter, this audio amplifier layer DSP parameter is
The DSP parameter arranged for this active audio amplifier, this array layer DSP parameter is for battle array belonging to this active audio amplifier
Each audio amplifier member of row group and the DSP parameter that arranges, this array group includes one or more active audio amplifier.
As in figure 2 it is shown, this digital signal processor 12 also includes input processing module 121 and multiple defeated
Go out processing module 123.
This input processing module 121 includes the sound effect processor of multiple series connection, and each sound effect processor divides
Not with each DSP parameter one_to_one corresponding of this group input processing parameter, each sound effect processor is used for according to right
The DSP parameter answered carries out corresponding signal processing operations to audio signal；This input processing module 121 also wraps
Including signal shunt module 122, it is used for will be through the sound after this module (i.e. input processing module 121) processes
Frequently signal is divided into the multiple-channel output audio signal corresponding with each power amplifier unit 13.
Each output processes the corresponding road output audio signal of mould, and each output processing module 123 includes
The sound effect processor of multiple series connection, each sound effect processor exports corresponding to audio signal with this road respectively
Each DSP parameter one_to_one corresponding of one group of output processing parameter, each sound effect processor is for according to correspondence
DSP parameter a corresponding road output audio signal is processed.
Each power amplifier unit 13 is for receiving corresponding one processed through corresponding output processing module 123
Road output audio signal, and Jiang Gai mono-tunnel audio signal be amplified process after transmit to corresponding speaker list
Unit 14.
In this technique, a DSP parameter is not meant to this DSP parameter only one of which numerical value, one
Individual DSP parameter is also likely to be and is made up of multiple (one group the most groups) numerical value, digital signal processor 12
Corresponding signal processing (audio effect processing) operation is performed, to change the transmission of audio amplifier according to a DSP parameter
Frequency characteristic.The most here " a DSP parameter " is it can be appreciated that for completing certain signal processing operations
Required one or more data, such as muting parameter and gain parameter have only to data, and
EQ parameter then needs one group of data.In the digital signal processor 12 of this technology, a DSP parameter pair
Answer a sound effect processor.
Each sound effect processor of input processing module 121 is series connection, the string of each sound effect processor
Connection (execution) order can be determined by any-mode, it is also possible to is determined by some way.Wherein,
The audio signal handled by sound effect processor made number one is directly from signal input unit 11；Follow-up
Audio signal handled by each sound effect processor processes through previous sound effect processor；Come last
A sound effect processor also need to the audio signal transmission after being processed to signal shunt module 122,
By signal shunt module 122, this audio signal is divided into the multiple-channel output audio frequency corresponding with each power amplifier unit 13
Signal.The situation of output processing module 123 can be by that analogy.
In this technique, the DSP parameter being used for adjusting single active audio amplifier (can be any type of
DSP parameter) to be referred to as audio amplifier layer DSP parameter, the i.e. data of this audio amplifier layer DSP parameter be that this audio amplifier institute is exclusive
, do not share with other audio amplifiers.Can be adjusted this by the audio amplifier layer DSP parameter of amendment active audio amplifier to have
Source audio amplifier.
And the DSP parameter being used for adjusting the audio amplifier member characteristics of array group (is probably any type simultaneously
DSP parameter) be referred to as array layer DSP parameter, each audio amplifier member of the most same array group shares this array
The data of layer DSP parameter.In array group, certain array layer DSP parameter of some audio amplifier member is modified,
The corresponding array layer DSP parameter of remaining audio amplifier member in the most same array group can be also identical by synchronous vacations
Numerical value.Can be adjusted by the array layer DSP parameter of amendment active audio amplifier simultaneously and belong to same array group
The characteristic of each active audio amplifier, it is achieved the synchronization control of multiple audio amplifiers.
Audio amplifier layer DSP parameter is relative concept with array layer DSP parameter, in the prior art, has
The input processing parameter of source audio amplifier only has audio amplifier layer DSP parameter, therefore when system compensation, can only be one by one
Audio amplifier is adjusted.And this technology is by arranging the array group of association in each audio amplifier member of array group
DSP parameter, if revising the array group DSP parameter of one of them audio amplifier member, then other of this array group
Array group DSP parameter corresponding to audio amplifier member all (can be needed by controlling platform or controlling system by synchronous vacations
System realizes), thus realize the adjustment of the synchronization of multiple audio amplifier, simplify the difficulty of speaker system correction with multiple
Miscellaneous degree.
Therefore the active audio amplifier of this technology is possible not only to realize the adjustment correction of single audio amplifier, it is also possible to for
Realize the synchronization control to multiple audio amplifiers and correct the basic condition creating necessity, thus can simplify whole raising one's voice
The adjustment correction work of device system, it is also possible to ensure Adjustment effect.
The input processing parameter of the present embodiment includes following one or more entity DSP data: input
Quiet data, input gain data, input time delay data, input reversed polarity data, input air decay is mended
Repay data, input compression sliced data, EQ data.The most each entity DSP data comprise and its kind
The audio amplifier layer DSP parameter that class is corresponding, such as input quiet data comprise audio amplifier layer input muting parameter, input
Gain data comprises audio amplifier layer input gain parameter, input time delay packet layer input time delay parameter Han audio amplifier,
Input reversed polarity packet inputs reversed polarity parameter containing audio amplifier layer, and input air attenuation compensation packet contains audio amplifier
Layer input air attenuation compensation parameter, input compression sliced data comprises audio amplifier layer input compression clipping parameter,
EQ packet layer EQ parameter Han audio amplifier.At least one of which entity DSP data are except comprising audio amplifier layer
Outside DSP parameter, also comprise array layer DSP parameter, say, that part entity DSP data only comprise monolayer
Parameter, part entity DSP packet contains multilamellar DSP parameter；Or all DSP data all comprise
Multilamellar DSP parameter.
The often group output processing parameter of the present embodiment includes part-frequency point parameter, and following one or many
Individual DSP parameter: output BPPA parameter, output mute parameter, output gain parameters, exports EQ parameter,
Output delay parameter, exports reversed polarity parameter, output squeezing clipping parameter；
The input processing module 121 of digital signal processor 12 comprises and is comprised with input processing parameter
The sound effect processor that each DSP parameter of entity DSP data is corresponding:
The each input muting parameter comprised for this input quiet data, at corresponding audio
Reason device is the quiet audio of input for audio signal carries out silence switch process according to this input muting parameter
Processor；
The each input gain parameter comprised for these input gain data, at corresponding audio
Reason device is the input gain audio for audio signal carries out input gain process according to this input gain parameter
Processor；
The each input time delay parameter comprised for these input time delay data, at corresponding audio
Reason device is the input time delay audio for audio signal carries out input time delay process according to this input time delay parameter
Processor；
Each input reversed polarity parameter that these input reversed polarity data are comprised, corresponding sound
Effect processor is the input for audio signal carries out reversed polarity operation process according to this input reversed polarity parameter
Reversed polarity sound effect processor；
Each input air attenuation compensation parameter that these input air attenuation compensation data are comprised,
Corresponding sound effect processor is for for carrying out sky according to this input air attenuation compensation parameter to audio signal
Weakness of QI subtracts the input air attenuation compensation sound effect processor of compensation deals；
Each input compression clipping parameter that this input compression sliced data is comprised, corresponding
Sound effect processor be for according to this input compression clipping parameter audio signal is compressed amplitude limiting processing
Input compression amplitude limit sound effect processor；
The each EQ parameter comprised for these EQ data, corresponding sound effect processor is for being used for
(EQ sound effect processor can according to this EQ parameter, audio signal to carry out the EQ sound effect processor of EQ process
Use IIR second order filter)；
Each output processing module 123 of digital signal processor 12 selectively includes corresponding one
The sound effect processor that group output each DSP parameter of being comprised of processing parameter is corresponding:
For the part-frequency point parameter of this group output processing parameter, corresponding sound effect processor is for using
According to this part-frequency point parameter, a corresponding road output audio signal being carried out frequency-division filter process, the sound obtained
Frequently frequency dividing sound effect processor (the frequency dividing sound effect processor that the frequency range of signal matches with corresponding power amplifier unit 13
FIR filter can be used)；
For each output BPPA parameter of this group output processing parameter, at corresponding audio
Reason device is for a corresponding road output audio signal being carried out phase response tune according to this output BPPA parameter
The output BPPA sound effect processor of whole process；
For each output mute parameter of this group output processing parameter, corresponding audio effect processing
Device is the output for a corresponding road output audio signal carries out silence switch process according to this muting parameter
Quiet sound effect processor；
For each output gain parameters of this group output processing parameter, corresponding audio effect processing
Device is the output for a corresponding road output audio signal carries out gain process according to this output gain parameters
Gain sound effect processor；
For each output EQ parameter of this group output processing parameter, corresponding sound effect processor
For the output EQ for a corresponding road output audio signal being carried out according to this output EQ parameter EQ process
Sound effect processor；
For each output delay parameter of this group output processing parameter, corresponding audio effect processing
Device is the output for a corresponding road output audio signal carries out delay process according to this output delay parameter
Time delay sound effect processor；
For each output reversed polarity parameter of this group output processing parameter, at corresponding audio
Reason device is for a corresponding road output audio signal being carried out reversed polarity operation according to this output reversed polarity parameter
The output reversed polarity sound effect processor processed；
For each output squeezing clipping parameter of this group output processing parameter, corresponding audio
Processor is for a corresponding road output audio signal being compressed limit according to this output squeezing clipping parameter
The output squeezing amplitude limit sound effect processor that width processes.
The quantity of the sound effect processor that input processing module 121 and output processing module 123 are comprised and kind
Class, be by its value volume and range of product of the actual DSP parameter comprised determined.
As shown in Figure 3, it is assumed that input processing parameter specifically includes: input quiet data, input gain
Data, input time delay data, EQ data, wherein each DSP data all include audio amplifier layer DSP parameter
With array layer DSP parameter, such as EQ data include audio amplifier layer EQ parameter and array layer EQ parameter.
So input processing module 121 then includes following 8 sound effect processors:
(1) one for carrying out silence switch process according to audio amplifier layer input muting parameter to audio signal
The quiet sound effect processor of input；
(2) one for carrying out silence switch process according to array layer input muting parameter to audio signal
The quiet sound effect processor of input；
(3) one for carrying out input gain process according to audio amplifier layer input gain parameter to audio signal
Input gain sound effect processor；
(4) one for carrying out input gain process according to array layer input gain parameter to audio signal
Input gain sound effect processor；
(5) one for carrying out input time delay process according to audio amplifier layer input time delay parameter to audio signal
Input time delay sound effect processor；
(6) one for carrying out input time delay process according to array layer input time delay parameter to audio signal
Input time delay sound effect processor；
(7) one for carrying out the sound of EQ process according to audio amplifier layer EQ parameter to input audio signal
Case layer EQ sound effect processor；
(8) and one for input audio signal being carried out EQ process according to array layer EQ parameter
Array layer EQ sound effect processor.
Assume that often group output processing parameter specifically includes: part-frequency point parameter, an output BPPA
Parameter, output mute parameter, output gain parameters, output EQ parameter, an output
Delay parameter, an output reversed polarity parameter and an output squeezing clipping parameter.
The most each output processing module 123 includes following 8 sound effect processors:
(1) one for dividing a corresponding road output audio signal according to this part-frequency point parameter
Filtering Processing, the frequency dividing audio effect processing that the frequency range of the audio signal obtained matches with corresponding power amplifier unit 13
Device；
(2) one for carrying out a corresponding road output audio signal according to this output BPPA parameter
The output BPPA sound effect processor that phase response adjustment processes；
(3) one for carrying out quiet opening according to this muting parameter to a corresponding road output audio signal
The output mute sound effect processor that pass processes；
(4) one for increasing a corresponding road output audio signal according to this output gain parameters
The output gain sound effect processor of benefit reason；
(5) one for carrying out EQ according to this output EQ parameter to a corresponding road output audio signal
The output EQ sound effect processor processed；
(6) one for prolonging a corresponding road output audio signal according to this output delay parameter
Time process output time delay sound effect processor；
(7) one for carrying out a corresponding road output audio signal according to this output reversed polarity parameter
The output reversed polarity sound effect processor that reversed polarity operation processes；
(8) one for entering a corresponding road output audio signal according to this output squeezing clipping parameter
The output squeezing amplitude limit sound effect processor of row compression amplitude limiting processing.
Additionally, this active audio amplifier also includes microprocessor 15, this microprocessor 15 includes: for basis
The DSP input parameter that each DSP parameter of this group input processing parameter is adjusted by external control signal is adjusted
Mould preparation block, and for each DSP parameter of each group of output processing parameter being carried out according to external control signal
The DSP output parameter adjusting module adjusted.Further, this active audio amplifier also includes and microprocessor 15
The control signal interface connected, this control signal interface is used for receiving external control signal and transmitting to micro-process
Device 15.
Embodiment two
The present embodiment is with the difference of embodiment one: the active audio amplifier of the present embodiment is in input
Reason each entity DSP data of comprising of parameter except comprising audio amplifier layer DSP parameter and array layer DSP parameter,
Also comprise a system layer DSP parameter identical with its audio amplifier layer DSP parameter kind, this system layer DSP
Parameter is each audio amplifier member for this active audio amplifier said system group and arranges, and this system group includes one
Individual or multiple active audio amplifiers.
(it is probably any type of for adjusting the DSP parameter of the audio amplifier member characteristics of system group simultaneously
DSP parameter) be referred to as system layer DSP parameter, i.e. same system group each audio amplifier member share this system layer
The data of DSP parameter.In system group, certain system layer DSP parameter of some audio amplifier member is modified, then
The correspondence system layer DSP parameter of remaining audio amplifier member in same system group can be also identical number by synchronous vacations
Value.Can be adjusted by the system layer DSP parameter of amendment active audio amplifier simultaneously and belong to each of same system group
The characteristic of individual active audio amplifier, it is achieved the synchronization control of multiple audio amplifiers.
Speaker system is being carried out system debug timing, except needing to debug the audio of each audio amplifier
In addition, in addition it is also necessary to debug the audio of each audio amplifier group, and the audio of speaker total system, prior art
Either debug audio amplifier, audio amplifier group or whole system, all could be adjusted to realize by audio amplifier one by one.
This technology arranges array layer DSP parameter in active audio amplifier, although can realize the synchronization of multiple audio amplifier
Adjust, simplify the debugging correction work of audio amplifier group, ensure the debugging effect of audio amplifier group, but can't be right
The audio of speaker system entirety is adjusted.To this end, this technology is further in the input in active audio amplifier
Processing parameter sets up system layer DSP parameter, then can simplified system is overall further debugging efforts, enter
One step guarantees the audio that speaker system is overall.
It is assumed that input processing parameter specifically includes: input quiet data, input gain
Data, input time delay data, EQ data.So input processing module then includes following 12 audio effect processing
Device:
(1) one for carrying out silence switch process according to audio amplifier layer input muting parameter to audio signal
The quiet sound effect processor of input；
(2) one for carrying out silence switch process according to array layer input muting parameter to audio signal
The quiet sound effect processor of input；
(3) one for carrying out silence switch process according to system layer input muting parameter to audio signal
The quiet sound effect processor of input；
(4) one for carrying out input gain process according to audio amplifier layer input gain parameter to audio signal
Input gain sound effect processor；
(5) one for carrying out input gain process according to array layer input gain parameter to audio signal
Input gain sound effect processor；
(6) one for carrying out input gain process according to system layer input gain parameter to audio signal
Input gain sound effect processor；
(7) one for carrying out input time delay process according to audio amplifier layer input time delay parameter to audio signal
Input time delay sound effect processor；
(8) one for carrying out input time delay process according to array layer input time delay parameter to audio signal
Input time delay sound effect processor；
(9) one for carrying out input time delay process according to system layer input time delay parameter to audio signal
Input time delay sound effect processor；
(10) one for carrying out the sound of EQ process according to audio amplifier layer EQ parameter to input audio signal
Case layer EQ sound effect processor；
(11) one for carrying out the battle array of EQ process according to array layer EQ parameter to input audio signal
Row layer EQ sound effect processor；
(12) and one for input audio signal being carried out EQ process according to system layer EQ parameter
Array layer EQ sound effect processor.
Embodiment three
The present embodiment is a kind of speaker system calibration method, and this speaker system includes multiple active sound
Case, this speaker system is provided with one or more array group, and/or one or more system group, each array
Group includes that one or more active audio amplifier, each system group include one or more active audio amplifier.This active sound
Case is the active audio amplifier described in embodiment two.As it is shown in figure 5, the speaker system calibration method of the present embodiment
Comprise the following steps:
Step S10: start；
Step S20: if selecting the audio amplifier layer DSP parameter of amendment input processing parameter, then perform step
S21；If selecting the array layer DSP parameter of amendment input processing parameter, then perform step S22；If selecting
The system layer DSP parameter of amendment input processing parameter, then perform step S23；If selecting amendment output to process
Parameter, then perform step S24；
Step S21: the audio amplifier layer DSP parameter that amendment is selected, and amended data are preserved to being somebody's turn to do
Active audio amplifier belonging to audio amplifier layer DSP parameter；Perform step S20 or step S30；(this step S realizes
Adjustment to single audio amplifier)
Step S22: the array layer DSP parameter that amendment is selected, if belonging to this array layer DSP parameter
Active audio amplifier is not belonging to the audio amplifier member of (any one) array group, then amended data will preserve extremely
In the respective array layer DSP parameter of this active audio amplifier；If the active audio amplifier belonging to this array layer DSP parameter belongs to
Audio amplifier member in some array group, then amended data are each by preserving respectively to this array group
In the array layer DSP parameter that individual audio amplifier member is corresponding；Perform step S20 or step S30；(this step is real
The now synchronization control of audio amplifiers multiple to audio amplifier group)
Step S23: the system layer DSP parameter that amendment is selected, if belonging to this system layer DSP parameter
Active audio amplifier is not belonging to the audio amplifier member of (any one) system group, then amended data will preserve extremely
In the corresponding system layer DSP parameter of this active audio amplifier；If this active audio amplifier belonging to system layer DSP parameter belongs to
Audio amplifier member in some system group, then amended data are each by preserving respectively to this system group
In the system layer DSP parameter that individual audio amplifier member is corresponding；Perform step S20 or step S30；(this step is real
The now synchronization control of audio amplifiers multiple to system group)
Amended data are preserved to this DSP parameter by step S24: the DSP parameter that amendment is selected
In affiliated active audio amplifier in the corresponding DSP parameter of corresponding one group of output processing parameter；
Step S30: terminate.
Embodiment four
The present embodiment is a kind of speaker system calibration method, and this speaker system includes multiple active sound
Case, this speaker system is provided with one or more array group, and each array group includes one or more active sound
Case.This active audio amplifier is the active audio amplifier described in embodiment one.As shown in Figure 6, the speaker of the present embodiment
System compensation method comprises the following steps:
Step S10: start；
Step S20: if selecting the audio amplifier layer DSP parameter of amendment input processing parameter, then perform step
S21；If selecting the array layer DSP parameter of amendment input processing parameter, then perform step S22；If selecting
Amendment output processing parameter, then perform step S24；
Step S21: the audio amplifier layer DSP parameter that amendment is selected, and amended data are preserved to being somebody's turn to do
Active audio amplifier belonging to audio amplifier layer DSP parameter；Perform step S20 or step S30；(this step S realizes
Adjustment to single audio amplifier)
Step S22: the array layer DSP parameter that amendment is selected, if belonging to this array layer DSP parameter
Active audio amplifier is not belonging to the audio amplifier member of (any one) array group, then amended data will preserve extremely
In the respective array layer DSP parameter of this active audio amplifier；If the active audio amplifier belonging to this array layer DSP parameter belongs to
Audio amplifier member in some array group, then amended data are each by preserving respectively to this array group
In the array layer DSP parameter that individual audio amplifier member is corresponding；Perform step S20 or step S30；(this step is real
The now synchronization control of audio amplifiers multiple to audio amplifier group)
Amended data are preserved to this DSP parameter by step S24: the DSP parameter that amendment is selected
In affiliated active audio amplifier in the corresponding DSP parameter of corresponding one group of output processing parameter；
Step S30: terminate.
Claims (8)
1. the active audio amplifier being built-in with DSP, it is characterised in that: this active audio amplifier includes that signal input is single
Unit, digital signal processor, multiple power amplifier unit and multiple loudspeaker unit, each power amplifier unit and phase
The loudspeaker unit joined connects；
This signal input unit is for receiving the audio signal of the outside input of audio amplifier, and transmits to this digital signal
Processor；
This digital signal processor is provided with data memory module, and in this data memory module, storage has one group of input
Processing parameter and corresponding with each power amplifier unit respectively many groups output processing parameters, often group output processing parameter
Including one or more DSP parameters；
This group input processing parameter includes that multiple entity DSP data, each entity DSP packet contain and are somebody's turn to do
An audio amplifier layer DSP parameter that the kind of entity DSP data is corresponding and an array layer DSP parameter, should
Audio amplifier layer DSP parameter is the DSP parameter arranged for this active audio amplifier, and this array layer DSP parameter is pin
The DSP parameter arranging each audio amplifier member of array group belonging to this active audio amplifier, this array group includes one
Individual or multiple active audio amplifiers；
This digital signal processor also includes input processing module and multiple output processing module,
This input processing module includes the sound effect processor of multiple series connection, each sound effect processor respectively with this group
Each DSP parameter one_to_one corresponding of input processing parameter, each sound effect processor is for according to corresponding DSP
Parameter carries out corresponding signal processing operations to audio signal；This input processing module also includes signal branch mould
Block, it is for dividing the audio signal after each sound effect processor described in this input processing module processes
Become the multiple-channel output audio signal corresponding with each power amplifier unit；
Each output processes the corresponding road output audio signal of mould, and each output processing module includes multiple series connection
Sound effect processor, each sound effect processor respectively with this road output audio signal corresponding to one group of output
Each DSP parameter one_to_one corresponding of processing parameter, each sound effect processor is for according to corresponding DSP parameter
A corresponding road output audio signal is processed；
Each power amplifier unit is for receiving the corresponding road output audio frequency processed through corresponding output processing module
Signal, and Jiang Gai mono-tunnel audio signal be amplified process after transmit to corresponding loudspeaker unit.
The active audio amplifier being built-in with DSP the most according to claim 1, it is characterised in that: described defeated
Enter each entity DSP data of processing parameter and also include that one identical with its audio amplifier layer DSP parameter kind is
System layer DSP parameter, this system layer DSP parameter is that each audio amplifier for this active audio amplifier said system group becomes
Member and arrange, this system group includes one or more active audio amplifier.
The active audio amplifier being built-in with DSP the most according to claim 1 and 2, it is characterised in that: described
Input processing parameter includes following one or more entity DSP data: input quiet data, input gain
Data, input time delay data, input reversed polarity data, input air attenuation compensation data, input compression limit
Width data, EQ data；
Often organize described output processing parameter and include part-frequency point parameter, and following one or more DSP parameters:
Output BPPA parameter, output mute parameter, output gain parameters, export EQ parameter, output time delay ginseng
Number, exports reversed polarity parameter, output squeezing clipping parameter；
The input processing module of described digital signal processor comprises the reality comprised with described input processing parameter
The sound effect processor that each DSP parameter of body DSP data is corresponding:
Each input muting parameter that this input quiet data is comprised, corresponding sound effect processor
For the quiet audio effect processing of input for audio signal being carried out according to this input muting parameter silence switch process
Device；
Each input gain parameter that these input gain data are comprised, corresponding sound effect processor
For the input gain audio effect processing for audio signal being carried out according to this input gain parameter input gain process
Device；
Each input time delay parameter that these input time delay data are comprised, corresponding sound effect processor
For the input time delay audio effect processing for audio signal being carried out according to this input time delay parameter input time delay process
Device；
The each input reversed polarity parameter comprised for these input reversed polarity data, at corresponding audio
Reason device is the input antipole for audio signal carries out reversed polarity operation process according to this input reversed polarity parameter
Property sound effect processor；
The each input air attenuation compensation parameter comprised for these input air attenuation compensation data, with it
Corresponding sound effect processor is to be used for, according to this input air attenuation compensation parameter, audio signal is carried out air to decline
Subtract the input air attenuation compensation sound effect processor of compensation deals；
Each input compression clipping parameter that this input compression sliced data is comprised, corresponding sound
Effect processor is the input for audio signal is compressed amplitude limiting processing according to this input compression clipping parameter
Compression amplitude limit sound effect processor；
The each EQ parameter comprised for these EQ data, corresponding sound effect processor is for basis
This EQ parameter carries out the EQ sound effect processor of EQ process to audio signal；
Each output processing module of described digital signal processor selectively includes that corresponding one group exports
The sound effect processor that each DSP parameter that processing parameter is comprised is corresponding:
For the part-frequency point parameter of this group output processing parameter, corresponding sound effect processor is for root
According to this part-frequency point parameter, a corresponding road output audio signal is carried out frequency-division filter process, the audio frequency letter obtained
Number the frequency dividing sound effect processor that matches with corresponding power amplifier unit of frequency range；
For each output BPPA parameter of this group output processing parameter, corresponding sound effect processor
For for a corresponding road output audio signal being carried out at phase response adjustment according to this output BPPA parameter
The output BPPA sound effect processor of reason；
For each output mute parameter of this group output processing parameter, corresponding sound effect processor is
For a corresponding road output audio signal being carried out according to this muting parameter the output mute of silence switch process
Sound effect processor；
For each output gain parameters of this group output processing parameter, corresponding sound effect processor is
For a corresponding road output audio signal being carried out according to this output gain parameters the output gain of gain process
Sound effect processor；
For each output EQ parameter of this group output processing parameter, corresponding sound effect processor is for using
In the output EQ audio that according to this output EQ parameter, a corresponding road output audio signal is carried out EQ process
Processor；
For each output delay parameter of this group output processing parameter, corresponding sound effect processor is
For a corresponding road output audio signal being carried out according to this output delay parameter the output time delay of delay process
Sound effect processor；
For each output reversed polarity parameter of this group output processing parameter, corresponding sound effect processor
For for a corresponding road output audio signal being carried out reversed polarity operation process according to this output reversed polarity parameter
Output reversed polarity sound effect processor；
For each output squeezing clipping parameter of this group output processing parameter, corresponding audio effect processing
Device is for being compressed a corresponding road output audio signal at amplitude limit according to this output squeezing clipping parameter
The output squeezing amplitude limit sound effect processor of reason.
The active audio amplifier being built-in with DSP the most according to claim 1, it is characterised in that: described input
Processing parameter includes inputting quiet data, input gain data, input time delay data, EQ data, described defeated
Enter processing module to include:
One quiet for input audio signal being carried out silence switch process according to audio amplifier layer input muting parameter
Sound sound effect processor；
One quiet for input audio signal being carried out silence switch process according to array layer input muting parameter
Sound sound effect processor；
One for carrying out the input increasing of input gain process according to audio amplifier layer input gain parameter to audio signal
Benefit sound effect processor；
One for carrying out the input increasing of input gain process according to array layer input gain parameter to audio signal
Benefit sound effect processor；
One is prolonged for input audio signal being carried out input time delay process according to audio amplifier layer input time delay parameter
Time sound effect processor；
One is prolonged for input audio signal being carried out input time delay process according to array layer input time delay parameter
Time sound effect processor；
One for carrying out the audio amplifier layer EQ sound of EQ process according to audio amplifier layer EQ parameter to input audio signal
Effect processor；
And an array layer being used for input audio signal carries out EQ process according to array layer EQ parameter
EQ sound effect processor.
The active audio amplifier being built-in with DSP the most according to claim 2, it is characterised in that: described input
Processing parameter includes inputting quiet data, input gain data, input time delay data, EQ data, described defeated
Enter processing module to include:
One quiet for input audio signal being carried out silence switch process according to audio amplifier layer input muting parameter
Sound sound effect processor；
One quiet for input audio signal being carried out silence switch process according to array layer input muting parameter
Sound sound effect processor；
One quiet for input audio signal being carried out silence switch process according to system layer input muting parameter
Sound sound effect processor；
One for carrying out the input increasing of input gain process according to audio amplifier layer input gain parameter to audio signal
Benefit sound effect processor；
One for carrying out the input increasing of input gain process according to array layer input gain parameter to audio signal
Benefit sound effect processor；
One for carrying out the input increasing of input gain process according to system layer input gain parameter to audio signal
Benefit sound effect processor；
One is prolonged for input audio signal being carried out input time delay process according to audio amplifier layer input time delay parameter
Time sound effect processor；
One is prolonged for input audio signal being carried out input time delay process according to array layer input time delay parameter
Time sound effect processor；
One is prolonged for input audio signal being carried out input time delay process according to system layer input time delay parameter
Time sound effect processor；
One for carrying out the audio amplifier layer EQ sound of EQ process according to audio amplifier layer EQ parameter to input audio signal
Effect processor；
One for carrying out the array layer EQ sound of EQ process according to array layer EQ parameter to input audio signal
Effect processor；
And an array layer being used for input audio signal carries out EQ process according to system layer EQ parameter
EQ sound effect processor.
6. according to the active audio amplifier being built-in with DSP described in any one of claim 1,2,4,5, its feature
Being: this active audio amplifier also includes microprocessor, this microprocessor includes: for according to external control signal
The DSP being adjusted each DSP parameter of this group input processing parameter inputs parameter adjustment module, and
DSP for being adjusted each DSP parameter of each group of output processing parameter according to external control signal is defeated
Go out parameter adjustment module.
The active audio amplifier being built-in with DSP the most according to claim 6, it is characterised in that: this active sound
Case also includes the control signal interface being connected with described microprocessor, and this control signal interface is used for receiving outside
Control signal is also transmitted to described microprocessor.
8. a speaker system calibration method, it is characterised in that: this speaker system includes multiple such as right
Requiring 1 to 7 arbitrary described active audio amplifier, this speaker system is provided with one or more array group, and/or
One or more system groups, this bearing calibration comprises the following steps:
Step S10: start；
Step S20: if selecting the audio amplifier layer DSP parameter of amendment input processing parameter, then perform step S21；
If selecting the array layer DSP parameter of amendment input processing parameter, then perform step S22；If selecting amendment defeated
Enter the system layer DSP parameter of processing parameter, then perform step S23；If selecting amendment output processing parameter,
Then perform step S24；
Step S21: the audio amplifier layer DSP parameter that amendment is selected, and amended data are preserved to this audio amplifier
Layer active audio amplifier belonging to DSP parameter；Perform step S20 or step S30；
Step S22: the array layer DSP parameter that amendment is selected, if active belonging to this array layer DSP parameter
Audio amplifier is not belonging to the audio amplifier member of array group, then amended data are corresponding by preservation to this active audio amplifier
In array layer DSP parameter；If the active audio amplifier belonging to this array layer DSP parameter belongs to some array group
Audio amplifier member, then amended data are corresponding by preserving respectively to this array group each audio amplifier member
In array layer DSP parameter；Perform step S20 or step S30；
Step S23: the system layer DSP parameter that amendment is selected, if active belonging to this system layer DSP parameter
Audio amplifier is not belonging to the audio amplifier member of system group, then amended data are corresponding by preservation to this active audio amplifier
In system layer DSP parameter；If this active audio amplifier belonging to system layer DSP parameter belongs to some system group
Audio amplifier member, then amended data are corresponding by preserving respectively to this system group each audio amplifier member
In system layer DSP parameter；Perform step S20 or step S30；
Amended data are preserved to belonging to this DSP parameter by step S24: the DSP parameter that amendment is selected
In active audio amplifier in the corresponding DSP parameter of corresponding one group of output processing parameter；
Step S30: terminate.
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| CN103916749A (en) * | 2012-12-31 | 2014-07-09 | 广州励丰文化科技股份有限公司 | Active sound box with multi-DSP (digital signal processor) system |
| CN103916729A (en) * | 2012-12-31 | 2014-07-09 | 广州励丰文化科技股份有限公司 | Active sound box with multiple digital signal processors (DSPs) |
| CN103916762A (en) * | 2012-12-31 | 2014-07-09 | 广州励丰文化科技股份有限公司 | Active integratedloudspeaker based on multiple DSPs |
| CN103916757A (en) * | 2012-12-31 | 2014-07-09 | 广州励丰文化科技股份有限公司 | Active integrated sound box with multi-DSP system |
| CN103916788A (en) * | 2012-12-31 | 2014-07-09 | 广州励丰文化科技股份有限公司 | High-quality active integrated speaker with automatic noise reduction function |
| CN103916767A (en) * | 2012-12-31 | 2014-07-09 | 广州励丰文化科技股份有限公司 | Active integrated loudspeaker based on multi-DSP system |
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| CN103916794A (en) * | 2012-12-31 | 2014-07-09 | 广州励丰文化科技股份有限公司 | Method for remotely controlling active loudspeakers based on multiple DSPs |
| CN103916770A (en) * | 2012-12-31 | 2014-07-09 | 广州励丰文化科技股份有限公司 | A control method for high-fidelity active speakers |
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