CN102780963A

CN102780963A - Sound system correction method

Info

Publication number: CN102780963A
Application number: CN2012102820364A
Authority: CN
Inventors: 李志雄; 邓俊曦
Original assignee: Guangzhou Leafun Culture Science and Technology Co Ltd
Current assignee: Guangzhou Leafun Culture Science and Technology Co Ltd
Priority date: 2012-08-09
Filing date: 2012-08-09
Publication date: 2012-11-14
Anticipated expiration: 2032-08-09
Also published as: CN102780963B

Abstract

The invention relates to the speaker control technology, in particular to a sound system correction method. The method includes that an active speaker provided with array-layer digital signal processor (DSP) parameters (a speaker, particularly, with more than binary frequency) is utilized, and multi-layer DSP parameters are virtualized by introducing speaker models to solve the systematic multi-layer adjustable problem, and further, an array group model is introduced to achieve the synchronous adjustment of each speaker model of an array group. The technology cannot only reduce the difficulty of speaker system debugging correction and the work amount, but also can obtain excellent system sound effects.

Description

The sound system bearing calibration

Technical field

The present invention relates to the audio amplifier control technology, specifically is a kind of sound system bearing calibration.

Background technology

The audio amplifier (being also referred to as active audio amplifier) of embedded digital signal processor (DSP) and power amplifier can carry out operations such as EQ adjustment, time-delay, amplitude limit and frequency division through digital signal processor to input audio signal, make audio amplifier reach optimum Working.

The conventional method of adjustment of the sound system of at present active audio amplifier being formed is following: (1) is the input processing parameter and output processing parameter (the above audio amplifier of two divided-frequency), for example EQ, time-delay, amplitude limit etc. of the digital signal processor of the single audio amplifier of adjustment earlier; (2) effect of sound system is tested, with further refinement test data the digital signal processor parameter of relevant audio amplifier is adjusted by rule of thumb; (3) once more the whole structure of sound system is tested,, once more the digital signal processor parameter of active audio amplifier is adjusted according to test result.That is to say, for realizing preferable system's acoustic efficiency, need, repeatedly the parameter of the digital signal processor of each audio amplifier is adjusted constantly according to whole acoustic efficiency.

There is following problem in the debugging bearing calibration of this sound system (sound system):

(1) the system debug correct operation is loaded down with trivial details, complicated, and workload is big.Because it is a lot of to influence the factor of system's acoustic efficiency; Adjust which audio amplifier, and which parameter of adjustment audio amplifier, do not have a fixed pattern; Can only the engineering staff audio amplifier or region-by-region (audio amplifier in the zone also is to adjust one by one) are adjusted one by one; Again each audio amplifier is adjusted according to test result again after the adjustment, promptly needed the acoustic efficiency of duplicate measurements system constantly and adjust each audio amplifier, just can reach preferable system's sound effect.The workload that original audio amplifier is one by one adjusted is very big, and need repeat many times also now that (number of times is unknown, and spent time and required workload are very huge.Especially for the layman, it almost is impossible mission that the sound system debugging is proofreaied and correct.

(2) even system proofreaies and correct through adjustment repeatedly, but still can not guarantee to obtain preferable acoustic efficiency.As stated, the factor that influences acoustic efficiency is a lot, and many times, for saving time, the engineering staff tends to rule of thumb judge which should adjust which parameter of which audio amplifier.Even engineering staff's audio amplifier one by one adjusts; But because sound system is a system engineering; Can influence each other between each audio amplifier, and the engineering staff, each audio amplifier is difficult to prediction and judges adjusted audio amplifier when being adjusted; Can produce what influence (or what influence other audio amplifiers can produce to this audio amplifier) to other audio amplifiers, therefore can only estimate by rule of thumb.Therefore, this debugging bearing calibration, much less ordinary person is even if for the personnel through professional training, can't ensure that also sound can obtain gratifying system sound effect.

Therefore simplify sound system audio amplifier debugging correct operation, improve debugging efficiency, and safeguards system debugging effect is a technical problem that needs to be resolved hurrily.Solve this technical barrier and have important function for the development and the application that promote professional sound technique.

Summary of the invention

The technical problem that the present invention solves provides a kind of sound system bearing calibration, to simplify the debugging correct operation of sound system, improves debugging efficiency, and safeguards system debugging effect.

For solving the problems of the technologies described above, the present invention adopts technical scheme to be:

A kind of sound system bearing calibration; This sound system comprises a plurality of active audio amplifiers; Each active audio amplifier comprises signal input unit, digital signal processor, a plurality of power amplifier unit and a plurality of loudspeaker unit, and each power amplifier unit is connected with the loudspeaker unit that is complementary;

This signal input unit is used to receive the audio signal of the outside input of audio amplifier, and transfers to this digital signal processor;

This digital signal processor is provided with data memory module, stores one group of input processing parameter and many groups of corresponding with each power amplifier unit respectively output processing parameters in this data memory module,

This group input processing parameter comprises a plurality of entity DSP data, and each entity DSP packet contains an audio amplifier layer DSP parameter corresponding with the kind of this entity DSP data, and this audio amplifier layer DSP parameter is the DSP parameter that is provided with to this active audio amplifier; And have at least entity DSP data also include one with identical array layer DSP parameter and the system layer DSP parameter of its audio amplifier layer DSP parameter kind; Wherein, this array layer DSP parameter is the DSP parameter that is provided with to each audio amplifier member of array group under this active audio amplifier; This system layer DSP parameter is provided with to each audio amplifier member of set of systems under this active audio amplifier; Every group of output processing parameter comprises one or more DSP parameters;

This digital signal processor also comprises input processing module and a plurality of output processing module,

This input processing module comprises the sound effect processor of a plurality of series connection; Each sound effect processor is corresponding one by one with each DSP parameter of this group input processing parameter respectively, and each sound effect processor is used for according to the DSP parameter of correspondence audio signal being carried out the corresponding signal process operation; This input processing module also comprises the signal shunt module, and it is used for being divided into the multichannel output audio signal corresponding with each power amplifier unit through the audio signal after this resume module;

Corresponding one road output audio signal of mould is handled in each output; Each output processing module comprises the sound effect processor of a plurality of series connection; Each sound effect processor is corresponding one by one with each DSP parameter of the pairing one group of output processing parameter of this one road output audio signal respectively, and each sound effect processor is used for according to the DSP parameter of correspondence one road output audio signal of correspondence being handled;

Each power amplifier unit is used to receive one road output audio signal of the correspondence of handling through corresponding output processing module, and this one tunnel audio signal is carried out transferring to corresponding loudspeaker unit after the processing and amplifying;

This bearing calibration may further comprise the steps:

Step S10: set up sound system model; This sound system model comprises a plurality of audio amplifier models; Each audio amplifier model is corresponding with a active audio amplifier in the sound system; Each audio amplifier model comprises one group of virtual input processing parameter and the virtual output processing parameter of many groups; This is organized virtual input processing parameter and comprises a plurality of virtual DSP data, and each virtual DSP data comprises an audio amplifier layer DSP parameter, an array layer DSP parameter and a system layer DSP parameter, and every group of virtual output processing parameter comprises a plurality of DSP parameters; Each virtual DSP data of audio amplifier model are corresponding one by one with each entity DSP data of active audio amplifier respectively, and each DSP parameter of one group of output processing parameter that each DSP parameter of every group of virtual output processing parameter is corresponding with active audio amplifier respectively is corresponding one by one;

Step S20: select newly-built or modification array group model, execution in step S30; Select newly-built or modification set of systems model, execution in step S40; Select to revise DSP parameter, execution in step S50;

Step S30: if newly-built array group model, execution in step S31; Revise change array group model member, execution in step S32;

Step S31: set up an array group model; And carry out related with this array group model one or more audio amplifier models; This array group model comprises a plurality of array layer DSP parameters, and these a plurality of array layer DSP parameters are corresponding one by one with audio amplifier model virtual input each array layer DSP parameter that processing parameter comprised respectively and kind is identical; Each array layer DSP parameter that is associated to each audio amplifier model of same array group model be arranged to this array group model in the corresponding identical numerical value of array layer DSP parameter; Execution in step S20 or step S60;

Step S32: selected array group model, if new swell box member, then with this audio amplifier model interaction to this array group model; If deletion audio amplifier member, then cancel the related of this audio amplifier model and this array group model; Execution in step S20 or step S60;

Step S40: if newly-built set of systems model, execution in step S41; If revise set of systems model member, execution in step S42;

Step S41: set up a set of systems model, and one or more audio amplifier models and this set of systems model are carried out related, become the audio amplifier member of this set of systems model; This set of systems model comprises a plurality of system layer DSP parameters, and these a plurality of system layer DSP parameters are corresponding one by one with audio amplifier model virtual input each system layer DSP parameter that processing parameter comprised respectively and kind is identical; Be associated to each system layer DSP parameter that the virtual input processing parameter of each audio amplifier model of same array 1 system model comprised be arranged to this set of systems model in the corresponding identical numerical value of system layer DSP parameter; Execution in step S20 or step S60;

Step S42: selected set of systems model, if new swell box member, then with this audio amplifier model interaction to this set of systems; If deletion audio amplifier member, then cancel the related of this audio amplifier model and this set of systems model; Execution in step S20 or step S60;

Step S50: if select to revise audio amplifier layer DSP parameter, then execution in step S51; If select to revise array layer DSP parameter, then execution in step S52; If select to revise system layer DSP parameter, then execution in step S53; If select to revise virtual output processing parameter, then execution in step S55;

Step S51: revise selected audio amplifier layer DSP parameter, and amended data are saved under this audio amplifier layer DSP parameter in the corresponding audio amplifier layer of the audio amplifier model DSP parameter; Execution in step S54;

Step S52: revise selected array layer DSP parameter, at this moment, and if this array layer DSP parameter is the DSP parameter of array group model, execution in step S521; If this array layer DSP parameter is the DSP parameter of audio amplifier model, execution in step S522;

Step S521: amended data are saved in the array layer DSP parameter that the array group model is corresponding under this array layer DSP parameter, and revise synchronously this array group model the related corresponding array layer DSP of each audio amplifier model parameter; Execution in step S54;

Step S522: if this audio amplifier model has been associated to an array group model; Then amended data are saved in the corresponding array layer DSP of this audio amplifier model parameter, and revise synchronously this an array group model and the corresponding array layer DSP parameter of related each audio amplifier model; If this audio amplifier model does not carry out related with the array group model; Then be saved to amended data in this audio amplifier model corresponding array layer DSP parameter if this array layer DSP parameter can be modified (the array layer DSP parameter that promptly can set not related with array group audio amplifier model is for closing or opening) this moment; Execution in step S54;

Step S53: revise selected system layer DSP parameter, at this moment, and if this system layer DSP parameter is the DSP parameter of set of systems model, execution in step S531; If this system layer DSP parameter is the DSP parameter of audio amplifier model, execution in step S532;

Step S531: amended data are saved under this system layer DSP parameter in the corresponding system layer DSP parameter of set of systems model, and revise synchronously this set of systems model the related corresponding system layer DSP parameter of each audio amplifier model; Execution in step S54;

Step S532: if this audio amplifier model has been associated to a set of systems model; Then amended data are saved in the corresponding system layer DSP parameter of this audio amplifier model, and revise synchronously this set of systems model and the corresponding system layer DSP parameter of related each audio amplifier model; If this audio amplifier model does not carry out related with the set of systems model; Then be saved to amended data in this audio amplifier model corresponding system layer DSP parameter if this system layer DSP parameter can be modified (the system layer DSP parameter that promptly can set not related with array group audio amplifier model is for closing or opening) this moment; Execution in step S54;

Step S54: the audio amplifier model that modification takes place for the virtual DSP data of virtual input processing parameter:

If this virtual DSP data of this audio amplifier model the correspondent entity DSP data in the corresponding active audio amplifier comprise audio amplifier layer DSP parameter, array layer DSP parameter and system layer DSP parameter, so in these virtual DSP data in the corresponding DSP parameter in the DSP parameter synchronization of change to the correspondent entity DSP data;

If this virtual DSP data of this audio amplifier model the correspondent entity DSP data in the corresponding active audio amplifier only comprise audio amplifier layer DSP parameter; So earlier the stack of each layer DSP parameter of these virtual DSP data is calculated new DSP parameter, and in will the audio amplifier layer DSP parameter of this new DSP parameter synchronization to correspondent entity DSP data; Execution in step S20 or step S60;

Step S55: the DSP parameter of revising one group of selected virtual output processing parameter; And amended data are saved under this group virtual output processing parameter in the audio amplifier model corresponding D SP parameter, simultaneously with in the corresponding DSP parameter in this DSP parameter synchronization in this audio amplifier model to the corresponding active audio amplifier; Execution in step S20 or step S60;

Step S60: finish.

Compared with prior art, beneficial effect is:

Prior art is if need be optimized the sound effect of whole sound system; Need adjust correction one by one repeatedly to each audio amplifier; But also behind the indivedual audio amplifiers of unpredictable adjustment under this audio amplifier the acoustics of array group and whole sound system can how to change; Increased difficulty and complexity that system debug is proofreaied and correct, so the sound system of prior art debugs that not only difficulty is bigger, needing very, the sound technique personnel of specialty operate; And the workload of debugging is very big, and the debugging effect also can't ensure.

Sound system bearing calibration based on present technique; Engineers and technicians can give up the traditional method of accurate each audio amplifier of adjustment; Then through on each audio amplifier basis of basic correction; To be unit with the group unify debugging to the audio amplifier member of each array group proofreaies and correct; Make the acoustics (transmission frequency characteristic) of each array group and whole sound system reach the instructions for use of system, optimize the whole acoustic efficiency of sound system to greatest extent, but the difficulty and the workload of sound system debugging significantly reduce.

The angle that present technique is used from system is thought deeply the debugging correction work of whole audio amplifier; Both taken into full account the self-characteristic of audio amplifier; Take into full account between each audio amplifier of same array group again, interactional factor between each array group of same system; Through single audio amplifier DSP parameter adjustment, array group DSP parameter adjustment and set of systems DSP parameter adjustment; From audio amplifier itself, two aspects of speaker array group (some technical scheme of present technique, also having increased system layer) the DSP parameter of each audio amplifier is adjusted; It is accurate inadequately that this adjustment seems, and is not that each audio amplifier all can be debugged to optimum state, but can obtain but that best system's sound effect---actual use of sound system is needed just for this.

Generally speaking, present technique not only can be simplified the difficulty that sound system debugging is proofreaied and correct, and reduces workload, but also can obtain system's sound effect of making us comparatively satisfied.

Description of drawings

Fig. 1 is the structural representation of the active audio amplifier of embodiment one;

Fig. 2 is the digital signal processor architecture sketch map of the active audio amplifier of embodiment one;

Fig. 3 is the principle schematic (comprise 3 layers of DSP parameter with EQ, all the other only comprise 1 layer of DSP parameter is example) of digital signal processor of the active audio amplifier of embodiment one;

Fig. 4 is the schematic flow sheet of the sound system bearing calibration of embodiment one;

Fig. 5 is the idiographic flow sketch map of step 50 among Fig. 4.

Embodiment

Below in conjunction with accompanying drawing embodiments of the invention are further described.

The sound system of the sound system bearing calibration of present embodiment comprises a plurality of active audio amplifiers, and present embodiment adopts the active audio amplifier that is described below.

As shown in Figure 1; This active audio amplifier comprises signal input unit 11, digital signal processor 12, a plurality of power amplifier unit 13 and a plurality of loudspeaker unit 14; Each power amplifier unit 13 is connected with the loudspeaker unit that is complementary 14, and loudspeaker unit 14 can be made up of one or more loud speakers.This signal input unit 11 is used to receive the audio signal of the outside input of audio amplifier, and transfers to this digital signal processor 12.As shown in Figure 2; This digital signal processor 12 is provided with data memory module 124; Store in this data memory module 124 one group of input processing parameter with respectively corresponding with each power amplifier unit 13 many groups export processing parameters, export processing parameter for every group and comprise one or more DSP parameters.

This group input processing parameter comprises a plurality of entity DSP data, and the kind of entity DSP data does not limit, and the input processing parameter can comprise the entity DSP data of a plurality of identical type, also can comprise a plurality of entity DSP data that have nothing in common with each other.

Each entity DSP packet contains an audio amplifier layer DSP parameter corresponding with the kind of this entity DSP data; This audio amplifier layer DSP parameter is the DSP parameter that is provided with to this active audio amplifier, and have at least entity DSP data also include one with identical array layer DSP parameter and the system layer DSP parameter of its audio amplifier layer DSP parameter kind.This array layer DSP parameter is the DSP parameter that is provided with to each audio amplifier member of array group under this active audio amplifier, and this system layer DSP parameter is provided with to each audio amplifier member of set of systems under this active audio amplifier.

For the audio amplifier model; Audio amplifier layer DSP parameter is the DSP parameter that is provided with to single audio amplifier model; Array layer DSP parameter then is the DSP parameter that is provided with to each audio amplifier model related with same array group; System layer DSP parameter then is the DSP parameter that is provided with to each audio amplifier model related with the same system group, the DSP parameter that each promptly related with same system group audio amplifier model is shared.The kind of each (each layer) DSP parameter that entity DSP data comprise is identical; Suppose that entity EQ data comprise audio amplifier layer EQ parameter and array layer EQ parameter; The DSP parameter kind of this audio amplifier layer EQ parameter and this array layer EQ parameter all is the EQ parameter so, the corresponding sound effect processor of each EQ parameter.

As shown in Figure 2, this digital signal processor 12 also comprises input processing module 121 and a plurality of output processing modules 123.This input processing module 121 comprises the sound effect processor of a plurality of series connection; Each sound effect processor is corresponding one by one with each DSP parameter of this group input processing parameter respectively, and each sound effect processor is used for according to the DSP parameter of correspondence audio signal being carried out the corresponding signal process operation; This input processing module 121 also comprises signal shunt module 122, and it is used for the audio signal after handling through this module (being input processing module 121) is divided into the multichannel output audio signal corresponding with each power amplifier unit 13.

Corresponding one road output audio signal of mould is handled in each output; Each output processing module 123 comprises the sound effect processor of a plurality of series connection; Each sound effect processor is corresponding one by one with each DSP parameter of the pairing one group of output processing parameter of this one road output audio signal respectively, and each sound effect processor is used for according to the DSP parameter of correspondence one road output audio signal of correspondence being handled.

Each power amplifier unit 13 is used to receive one road output audio signal of the correspondence of handling through corresponding output processing module 123, and this one tunnel audio signal is carried out transferring to corresponding loudspeaker unit 14 after the processing and amplifying.

In present technique; A DSP parameter does not also mean that this DSP parameter has only a numerical value; A DSP parameter also possibly be made up of a plurality of (one group even many groups) numerical value; Digital signal processor 12 is carried out corresponding signal process (audio processing) operation according to a DSP parameter, to change the transmission frequency characteristic of audio amplifier.Therefore here " a DSP parameter " is appreciated that also into for accomplishing the needed one or more data of certain signal processing operations, for example quiet parameter and gain parameter only need data to get final product, and the EQ parameter then need one group of data.In digital signal processor 12, the corresponding sound effect processor of DSP parameter.

Each sound effect processor of input processing module 121 is connected, and the series connection of each sound effect processor (execution) order can be confirmed through any-mode, also can confirm through a certain mode.Wherein, the handled audio signal of the sound effect processor that makes number one is directly from signal input unit 11; The follow-up handled audio signal of each sound effect processor is handled through previous sound effect processor; Coming a last sound effect processor also need be with audio signal transmission to the signal shunt module 122 after the wherethrough reason, by signal shunt module 122 this audio signal is divided into the multichannel output audio signal corresponding with each power amplifier unit 13.

In present technique, the DSP parameter (can be the DSP parameter of any type) that is used to adjust single active audio amplifier is called audio amplifier layer DSP parameter, and promptly the data of this audio amplifier layer DSP parameter are that this active audio amplifier is exclusive, does not share with other audio amplifiers.Audio amplifier layer DSP parameter through revising active audio amplifier can be adjusted this active audio amplifier.

And the DSP parameter (possibly be the DSP parameter of any type) that is used for adjusting simultaneously the audio amplifier member characteristic of array group is called array layer DSP parameter, and promptly each audio amplifier member of same array group shares the data of this array layer DSP parameter.Certain array layer DSP parameter of some audio amplifier members is modified in the array group, and all the other the audio amplifier members' in the then same array group corresponding array layer DSP parameter also can be synchronized and be revised as identical numerical value.Can adjust the characteristic of each active audio amplifier that belongs to same array group simultaneously through the array layer DSP parameter of revising active audio amplifier, realize the synchronous adjustment of a plurality of audio amplifiers.

Audio amplifier layer DSP parameter and array layer DSP parameter are relative notions, in the prior art, have only audio amplifier layer DSP parameter in the input processing parameter of active audio amplifier, and therefore when system compensation, audio amplifier is adjusted one by one.And present technique is through being provided with related array group DSP parameter in each audio amplifier member of array group; If revise one of them audio amplifier member's array group DSP parameter; The corresponding array group DSP parameter of other audio amplifiers member of this array group all can be synchronized modification (need realize by controlling platform or control system) so; Thereby realize the synchronous adjustment of a plurality of audio amplifiers, simplify difficulty and complexity that sound system is proofreaied and correct.

The DSP parameter (possibly be the DSP parameter of any type) that is used for the audio amplifier member characteristic of while Adjustment System group is called system layer DSP parameter, and promptly each audio amplifier member of same system group shares the data of this system layer DSP parameter.Certain system layer DSP parameter of some audio amplifier members is modified in the set of systems, and then all the other the audio amplifier members' in the same system group corresponding system layer DSP parameter also can be synchronized and be revised as identical numerical value.Can adjust the characteristic of each active audio amplifier that belongs to same set of systems simultaneously through the system layer DSP parameter of revising active audio amplifier, realize the synchronous adjustment of a plurality of audio amplifiers.

Why on the basis of array group, set up set of systems; Be to consider: sound system is being carried out the system debug timing; Except the audio of each audio amplifier of needs debugging, also need debug the audio of each audio amplifier group, and the audio of loud speaker total system; No matter prior art is debugging audio amplifier, audio amplifier group or whole system, all realizes through audio amplifier adjustment one by one.Present technique is provided with array layer DSP parameter in active audio amplifier, though can realize the synchronous adjustment of a plurality of audio amplifiers, simplify the debugging correct operation of audio amplifier group and ensure the adjustment effect of sound system.But only there is array layer DSP parameter can't realize the audio of whole sound system being unified adjustment from system level.For this reason; Present technique is further set up system layer DSP parameter in the input processing parameter in active audio amplifier; Thereby realize adjustment, further simplify the whole debugging correction work of sound system, and further ensure the debugging effect of sound system the sound system integral sound effect.

Therefore present technique not only can realize the adjustment correction of single audio amplifier; Can also realize each audio amplifier group and the whole audio of sound system are adjusted correction; Thereby simplify the adjustment correction work of whole sound system, and guarantee to ensure last adjustment calibration result.

With reference to figure 3, the input processing parameter of the active audio amplifier of present embodiment comprises following one or more entity DSP data: input quiet data, input gain data; The input time delay data, input reversed polarity data, input air attenuation compensation data; Input compression sliced data, the EQ data;

Every group of output processing parameter comprises the part-frequency point parameter, and following one or more DSP parameters: output BPPA parameter, export quiet parameter, output gain parameters, output EQ parameter, output delay parameter, output reversed polarity parameter, output compression amplitude limit parameter;

Be that the input processing module 121 of active audio amplifier digital signal processor 12 comprises each DSP parameter corresponding sound effect processor with the input entity DSP data that processing parameter comprised therewith accordingly:

Each imports quiet parameter for this input quiet data is comprised, is to be used for importing quiet parameter according to this audio signal is carried out the quiet sound effect processor of input that silence switch is handled with its corresponding sound effect processor;

For each input gain parameter that these input gain data are comprised, be to be used for audio signal being carried out the input gain sound effect processor that input gain is handled according to this input gain parameter with its corresponding sound effect processor;

For each input time delay parameter that these input time delay data are comprised, be to be used for audio signal being carried out the input time delay sound effect processor that input time delay is handled according to this input time delay parameter with its corresponding sound effect processor;

Each the input reversed polarity parameter that is comprised for these input reversed polarity data, with its corresponding sound effect processor be the input reversed polarity sound effect processor that is used for audio signal being carried out the reversed polarity operational processes according to this input reversed polarity parameter;

Each the input air attenuation compensation parameter that is comprised for these input air attenuation compensation data, with its corresponding sound effect processor be the input air attenuation compensation sound effect processor that is used for audio signal being carried out the attenuation of air compensation deals according to this input air attenuation compensation parameter;

For this input compression each input compression amplitude limit parameter that sliced data comprised, be to be used for compressing the amplitude limit sound effect processor according to the input that this input compression amplitude limit parameter is compressed amplitude limiting processing to audio signal with its corresponding sound effect processor;

For each EQ parameter, with its corresponding sound effect processor be the EQ sound effect processor (the EQ sound effect processor can adopt the IIR second order filter) that is used for audio signal being compressed amplitude limiting processing according to this EQ parameter;

Each output processing module 123 of digital signal processor 12 selectively comprises one group output each DSP parameter corresponding sound effect processor that processing parameter comprised corresponding with it:

Part-frequency point parameter for this group output processing parameter; With its corresponding sound effect processor is to be used for according to this part-frequency point parameter a road corresponding output audio signal being carried out frequency-division filter to handle, the frequency division sound effect processor (the frequency division sound effect processor can adopt the FIR filter) that the frequency range of the audio signal that obtains and corresponding power amplifier unit 13 are complementary;

For each output BPPA parameter of this group output processing parameter, be to be used for a road corresponding output audio signal being carried out the output BPPA sound effect processor that the phase response adjustment is handled according to this output BPPA parameter with its corresponding sound effect processor;

Exporting quiet parameter for each of this group output processing parameter, is the quiet sound effect processor of output that is used for according to this quiet parameter a road corresponding output audio signal being carried out silence switch processing with its corresponding sound effect processor;

For each output gain parameters of this group output processing parameter, be the output gain sound effect processor that is used for a road corresponding output audio signal being carried out gain process according to this output gain parameters with its corresponding sound effect processor;

For each output EQ parameter of this group output processing parameter, be to be used for a road corresponding output audio signal being carried out the output EQ sound effect processor that EQ handles according to this output EQ parameter with its corresponding sound effect processor;

For each output delay parameter of this group output processing parameter, be the output time-delay sound effect processor that is used for a road corresponding output audio signal being carried out delay process according to this output delay parameter with its corresponding sound effect processor;

For each output reversed polarity parameter of this group output processing parameter, be the output reversed polarity sound effect processor that is used for a road corresponding output audio signal being carried out the reversed polarity operational processes according to this output reversed polarity parameter with its corresponding sound effect processor;

For each output compression amplitude limit parameter of this group output processing parameter, be the output compression amplitude limit sound effect processor that is used for a road corresponding output audio signal being compressed amplitude limiting processing according to this output compression amplitude limit parameter with its corresponding sound effect processor.

Each entity DSP data of present embodiment all comprise the audio amplifier layer DSP parameter corresponding with its kind; For example importing quiet data comprises the audio amplifier layer and imports quiet parameter; The input gain data comprise audio amplifier layer input gain parameter; The input time delay data comprise audio amplifier layer input time delay parameter, and input reversed polarity data comprise audio amplifier layer input reversed polarity parameter, and input air attenuation compensation data comprise audio amplifier layer input air attenuation compensation parameter; Input compression sliced data comprises audio amplifier layer input compression amplitude limit parameter, and the EQ data comprise audio amplifier layer EQ parameter.Wherein have a kind of entity DSP data at least except comprising audio amplifier layer DSP parameter, also comprise array layer DSP parameter and system layer DSP parameter, that is to say that part entity DSP data only comprise the individual layer parameter, part entity DSP packet contains multilayer DSP parameter; Or all the DSP data all comprise multilayer DSP parameter.

The value volume and range of product of the sound effect processor that active audio amplifier input processing module 121 and output processing module 123 are comprised, be by its value volume and range of product of the actual DSP parameter that comprises determine.For example, if the input processing parameter only comprises a quiet parameter and an input time delay parameter, input processing module 121 will only comprise a quiet sound effect processor and an input time delay sound effect processor so; If the input processing parameter comprises 2 quiet parameters and 2 input time delay parameters, input processing module 121 will comprise 2 quiet sound effect processors and 2 input time delay sound effect processors so.

Because the sound effect processor that input processing module 121 is comprised is connected, the order of connection of each sound effect processor can be confirmed according to any-mode, also can confirm according to ad hoc fashion.Wherein, the handled audio signal of first sound effect processor is from signal input unit 11; The handled audio signal of follow-up sound effect processor is from a last sound effect processor; Audio signal transmission to corresponding power amplifier unit 13 after last sound effect processor also needs to handle.The situation of output processing module 123 can be by that analogy.

Like Fig. 4, shown in Figure 5, the sound system bearing calibration of present embodiment may further comprise the steps:

Step S10: set up sound system model; This sound system model comprises a plurality of audio amplifier models; Each audio amplifier model and a active audio amplifier corresponding (unique corresponding) in the sound system; Each audio amplifier model comprises one group of virtual input processing parameter and the virtual output processing parameter of many groups; This is organized virtual input processing parameter and comprises a plurality of virtual DSP data, and each virtual DSP data comprises an audio amplifier layer DSP parameter, an array layer DSP parameter and a system layer DSP parameter, and every group of virtual output processing parameter comprises a plurality of DSP parameters; Each virtual DSP data of audio amplifier model are corresponding one by one with each entity DSP data of active audio amplifier respectively, and each DSP parameter of one group of output processing parameter that each DSP parameter of every group of virtual output processing parameter is corresponding with active audio amplifier respectively is corresponding one by one;

Step S522: if this audio amplifier model has been associated to an array group model; Then amended data are saved in the corresponding array layer DSP of this audio amplifier model parameter, and revise synchronously this an array group model and the corresponding array layer DSP parameter of related each audio amplifier model; If this audio amplifier model does not carry out relatedly with (any) array group model, then amended data are saved in the corresponding array layer DSP of this audio amplifier model parameter; Execution in step S54;

Step S532: if this audio amplifier model has been associated to a set of systems model; Then amended data are saved in the corresponding system layer DSP parameter of this audio amplifier model, and revise synchronously this set of systems model and the corresponding system layer DSP parameter of related each audio amplifier model; If this audio amplifier model does not carry out relatedly with (any) set of systems model, then amended data are saved in the corresponding system layer DSP parameter of this audio amplifier model; Execution in step S54;

If the correspondent entity DSP data in the corresponding active audio amplifier of this virtual DSP data of this audio amplifier model institute comprise audio amplifier layer DSP parameter, array layer DSP parameter and system layer DSP parameter, so in these virtual DSP data in the synchronous corresponding DSP parameter to the correspondent entity DSP data of the DSP parameter of change (possibly be audio amplifier layer DSP parameter, array layer DSP parameter or system layer DSP parameter);

If this virtual DSP data of this audio amplifier model the correspondent entity DSP data in the corresponding active audio amplifier only comprise audio amplifier layer DSP parameter; (the stack calculating operation of each layer DSP parameter can pass through the audio amplifier internal resource so earlier the stack of each layer DSP parameter of these virtual DSP data to be calculated new DSP parameter; For example built-in microprocessor 15 is accomplished; Also can pass through the audio amplifier resource external; For example the sound system controlling platform is accomplished), and in will the audio amplifier layer DSP parameter of this new DSP parameter synchronization to correspondent entity DSP data; Execution in step S20 or step S60;

Step S55: the DSP parameter of revising one group of selected virtual output processing parameter; And amended data are saved under this group virtual output processing parameter in the audio amplifier model corresponding D SP parameter, simultaneously with (promptly being saved in the active audio amplifier in one group of corresponding DSP parameter of exporting in the processing parameter corresponding) in the corresponding DSP parameter in this DSP parameter synchronization in this audio amplifier model to the corresponding active audio amplifier with this group virtual output processing parameter; Execution in step S20 or step S60;

Step S60: finish.

In the present embodiment, no matter which floor (several) DSP parameter is each entity DSP data of active audio amplifier input processing parameter specifically comprise, and each virtual DSP data of the audio amplifier model corresponding with this active audio amplifier all comprise multilayer DSP parameter respectively.Since each entity DSP data that each virtual DSP data of being comprised of audio amplifier model and active audio amplifier are comprised be corresponding one by one.Active audio amplifier the actual entity DSP data that comprise, in the audio amplifier model, all exist with this entity DSP corresponding virtual DSP data.

In the present embodiment; For above-mentioned steps S30: suppose that the array group first comprises active audio amplifier A, active audio amplifier B and active audio amplifier C; Set of systems second comprises whole audio amplifier members of array group first; And active audio amplifier D, promptly set of systems second comprises active audio amplifier A, active audio amplifier B, active audio amplifier C and active audio amplifier D, its corresponding audio amplifier model is respectively audio amplifier model A ', audio amplifier Model B ', audio amplifier MODEL C ' and audio amplifier model D '.

The input processing parameter of each active audio amplifier comprises entity EQ data, and the virtual input processing parameter of each audio amplifier model comprises virtual EQ data, and these virtual EQ data comprise an audio amplifier layer EQ parameter, an array layer EQ parameter and a system layer EQ parameter.

(1) revises audio amplifier layer DSP parameter

If revise the audio amplifier layer EQ parameter of audio amplifier model A ', so amended data will be saved in the audio amplifier layer EQ parameter of audio amplifier model A '.Because the virtual EQ data of the virtual input processing parameter of audio amplifier model A ' are modified, therefore need this be revised synchronously to corresponding active audio amplifier A.

At this moment, if the entity EQ data of active audio amplifier have comprised 3 layers of EQ parameter: audio amplifier layer EQ parameter, array layer EQ parameter and system layer EQ parameter, the audio amplifier layer EQ parameter of audio amplifier model A ' will be synchronously to the audio amplifier layer EQ parameter of active audio amplifier A so.

At this moment; If the entity EQ data of active audio amplifier only comprise audio amplifier layer EQ parameter; So just need earlier the audio amplifier layer EQ parameter in the virtual EQ data of this audio amplifier model A ', array layer EQ parameter and the stack of system layer EQ parameter to be calculated new EQ parameter; And the stack audio that in active audio amplifier A, obtains of three EQ parameters before the stack and the EQ parameter of stack calculating gained obtain audio in active audio amplifier A consistent, and then the numerical value of new EQ parameter transfers in the audio amplifier layer EQ data of corresponding active audio amplifier.

(2) revise array layer DSP parameter

If revise the array layer EQ parameter of audio amplifier model A '; Because the pairing active audio amplifier A of audio amplifier model A ' belongs to the audio amplifier member of array group first; Therefore in the array layer EQ parameter that amended data are with in the array layer EQ parameter that is saved to pairing each audio amplifier model of array group first respectively, and promptly amended data are with being saved to audio amplifier model A ', audio amplifier Model B respectively ', audio amplifier MODEL C '.Modification has all taken place in the array layer EQ parameter of ' and audio amplifier MODEL C ' at this, though only adjusted the array layer EQ parameter of audio amplifier model A ', other two audio amplifier Model B related with this audio amplifier model A '.Therefore need be with audio amplifier model A ', audio amplifier Model B ', audio amplifier MODEL C ' data sync of being revised to each self-corresponding active audio amplifier.

At this moment; The array layer EQ parameter of ' with audio amplifier MODEL C ' is respectively synchronously extremely separately in the array layer EQ parameter of corresponding active audio amplifier if the entity EQ data of active audio amplifier have comprised audio amplifier layer EQ parameter, array layer EQ parameter and system layer EQ parameter, audio amplifier model A ', audio amplifier Model B so.

At this moment; If the entity EQ data of active audio amplifier only comprise audio amplifier layer EQ parameter; Audio amplifier layer EQ parameter, array layer EQ parameter and the system layer EQ parameter of each audio amplifier model calculate new EQ parameter with stack so, and the new EQ parameter that will obtain separately is respectively synchronously to the audio amplifier layer EQ parameter of corresponding active audio amplifier.With the audio amplifier Model B ' be example, earlier its audio amplifier layer EQ parameter, array layer EQ parameter and the stack of system layer EQ parameter are calculated new EQ parameter, and then will this new EQ parameter synchronization to the audio amplifier layer EQ parameter of active audio amplifier B.

(3) revise system layer DSP parameter

If revise the system layer EQ parameter of audio amplifier model A '; Because the pairing active audio amplifier A of audio amplifier model A ' belongs to the audio amplifier member of set of systems second; Therefore amended data are with in the system layer EQ parameter that is saved to pairing each audio amplifier model of set of systems first respectively, and promptly amended data are with being saved to audio amplifier model A ', audio amplifier Model B respectively ', audio amplifier MODEL C ' and the system layer EQ parameter of audio amplifier model D ' in.Modification has all taken place in the system layer EQ parameter of ' and audio amplifier MODEL C ' at this, though only adjusted the system layer EQ parameter of audio amplifier model A ' here, other three audio amplifier Model B related with this audio amplifier model A '.Therefore need be with audio amplifier model A ', audio amplifier Model B the data sync revised of ', audio amplifier MODEL C ' and audio amplifier model D ' to each self-corresponding active audio amplifier.

At this moment; The system layer EQ parameter of ', audio amplifier MODEL C ' and audio amplifier model D ' is respectively synchronously extremely separately in the system layer EQ parameter of corresponding active audio amplifier if the entity EQ data of active audio amplifier have comprised audio amplifier layer EQ parameter, array layer EQ parameter and system layer EQ parameter, audio amplifier model A ', audio amplifier Model B so.

With the stack audio after the handling respectively of a kind of a plurality of DSP parameters of DSP parameter with these several DSP parameters are superposeed handle resulting audio to the parameter stack result again after calculating earlier, the audio result that these two processing modes obtain is the same.Each entity DSP data like sporocarp audio amplifier input processing parameter all comprise multilayer, and so every kind of DSP parameter all need be handled repeatedly, can increase the weight of the burden of signal processor like this, limits its processing speed.The input processing parameter of supposing certain active audio amplifier comprises quiet data, delay data, gain data and reversed polarity data; And each entity DSP data comprises 3 layers of DSP parameter respectively: audio amplifier layer DSP parameter and array layer DSP parameter; The digital signal processor 12 of this active audio amplifier needs to carry out 3 silence switch processing, 3 delay process, 3 gain process and 3 reversed polarity processing so, and the input processing module 121 of digital signal processor 12 comprises in other words: 3 quiet sound effect processors, 3 time-delay sound effect processors, 3 gain sound effect processors and 3 reversed polarity sound effect processors.

For addressing the above problem; Reduce the audio number of processes of active audio amplifier digital signal processor 12; Improve treatment effeciency and processing speed; Present technique is in some technical scheme, and the part entity DSP data of active audio amplifier input processing parameter are arranged to individual layer, but all fictionalize multilayer DSP parameter in each virtual DSP data of system model middle pitch box model.For the entity DSP data of having only one deck DSP parameter in the active audio amplifier; Behind corresponding virtual DSP data modification with it; Each layer DSP parameter with these virtual DSP data is superimposed as a DSP parameter earlier; And then synchronously to this entity DSP data, thereby the adjustable effect of multilayer of each DSP data of realization system level.For example can be through the resource beyond the digital signal processor 12; For example can on the sound box system controlling platform, realize the described sound system bearing calibration of present technique; Fictionalize multilayer DSP parameter in the audio amplifier model of controlling platform; Then in controlling platform with amended DSP supplemental characteristic during synchronously to the entity audio amplifier; Microprocessor in controlling platform or active audio amplifier 15 is accomplished corresponding D SP parameter overlap-add operation earlier, reduces the data volume of being managed and the amount of calculation of digital signal processor 12, makes rational use of resources and improves the audio treatment effeciency.Therefore present embodiment can make full use of the external resource of digital signal processor 12, reduces audio and handles quantity (or number of times), improves the processing speed of digital signal processor 12.

In the present embodiment, active audio amplifier also comprises microprocessor 15, and this microprocessor 15 is used for according to external control signal this group input processing parameter and each DSP parameter of each group output processing parameter being adjusted.

Accordingly, in step S54:

If the corresponding entity DSP data of these virtual DSP data comprise audio amplifier layer DSP parameter, array layer DSP parameter and system layer DSP parameter; Send the control signal of revising corresponding (corresponding with the virtual DSP data that this generation is revised) entity DSP data according to the microprocessor 15 to corresponding (corresponding with this audio amplifier model) active audio amplifier in the virtual DSP data that are modified earlier, this microprocessor 15 is made amendment to the corresponding DSP parameter in the entity DSP data of correspondence according to the DSP parameter in these virtual DSP data that this control signal comprised;

If the corresponding entity DSP data of these virtual DSP data only comprise audio amplifier layer DSP parameter; Send earlier the control signal of modification correspondent entity DSP data to the microprocessor 15 of corresponding active audio amplifier according to these virtual DSP data of institute; This microprocessor 15 calculates a new DSP parameter with each layer DSP parameter stack of these virtual DSP data that this this control signal comprised, and then according to this new DSP parameter the audio amplifier layer DSP parameter of the entity DSP data of correspondence is made amendment;

Accordingly, in step 55:

In the time of in the corresponding DSP parameter of DSP parameter synchronization to active audio amplifier in one group of virtual output processing parameter that the audio amplifier model is selected; Send the DSP parameter control signal of revising corresponding one group of output processing parameter according to this DSP parameter of this virtual output processing parameter to the microprocessor 15 of corresponding active audio amplifier earlier, this microprocessor 15 is made amendment to the corresponding DSP parameter in one group of output processing parameter of correspondence according to this DSP parameter in this group virtual output processing parameter that this control signal comprised.

In addition, this active audio amplifier also comprises the control signal interface that is connected with microprocessor 15, and this control signal interface is used to receive external control signal and transfers to microprocessor 15.

Embodiment two

The difference of present embodiment and embodiment one is, in said step S54:

If the corresponding entity DSP data of these virtual DSP data comprise audio amplifier layer DSP parameter, array layer DSP parameter and system layer DSP parameter; Then send the control signal of revising correspondent entity DSP data according to the microprocessor to corresponding active audio amplifier in the virtual DSP data that are modified, this microprocessor is made amendment to the corresponding DSP parameter in the entity DSP data of correspondence according to the DSP parameter in these virtual DSP data that this control signal comprised;

If the corresponding entity DSP data of these virtual DSP data only comprise audio amplifier layer DSP parameter; Then elder generation calculates a new DSP parameter according to each layer DSP parameter stack of these virtual DSP data; Microprocessor to corresponding active audio amplifier sends the control signal of revising correspondent entity DSP data again; This microprocessor is according to this new DSP parameter that this control signal comprised, and the audio amplifier layer DSP parameter of the entity DSP data of correspondence is made amendment.

In said step 55: in the time of in the corresponding DSP parameter of DSP parameter synchronization to active audio amplifier in one group of virtual output processing parameter that the audio amplifier model is selected; Send the DSP parameter control signal of revising corresponding one group of output processing parameter according to this DSP parameter of this virtual output processing parameter to the microprocessor of corresponding active audio amplifier earlier, this microprocessor is made amendment to the corresponding DSP parameter in one group of output processing parameter of correspondence according to this DSP parameter in this group virtual output processing parameter that this control signal comprised.

Present technique is when concrete the realization, and for some comparatively simple DSP parameter, for example quiet, time-delay, reversed polarity, gain etc. only are provided with one deck DSP parameter in the input processing parameter of active audio amplifier.Carrying out the system debug timing; Synthesize a DSP parameter, and then transfer in the corresponding DSP data of corresponding active audio amplifier through external resource (the digital signal processor resource in addition) calculating that superposes earlier with each layer DSP parameter of these entities DSP data corresponding virtual DSP data.And for comparatively complicated DSP parameter, for example EQ can be provided with 3 layers of EQ parameter in the input processing parameter of active audio amplifier, is respectively audio amplifier layer EQ parameter, array layer EQ parameter and system layer EQ parameter.If certain layer of EQ parameter of audio amplifier model revised, the EQ parameter of modification will be directly synchronous to corresponding one deck () the EQ parameter of active audio amplifier so, and need not to carry out earlier the stack calculating of a plurality of DSP parameters.Thereby both made full use of the efficient fast signal disposal ability of digital signal processor, can make full use of external resource again, further improved the real-time audio signal handling capacity of digital signal processor.

Claims

1. sound system bearing calibration; It is characterized in that: this sound system comprises a plurality of active audio amplifiers; Each active audio amplifier comprises signal input unit, digital signal processor, a plurality of power amplifier unit and a plurality of loudspeaker unit, and each power amplifier unit is connected with the loudspeaker unit that is complementary;

This bearing calibration may further comprise the steps:

Step S522: if this audio amplifier model has been associated to an array group model; Then amended data are saved in the corresponding array layer DSP of this audio amplifier model parameter, and revise synchronously this an array group model and the corresponding array layer DSP parameter of related each audio amplifier model; If this audio amplifier model not with the array group model carry out related, this moment if this array layer DSP parameter can be modified, then amended data are saved in the corresponding array layer DSP of this audio amplifier model parameter; Execution in step S54;

Step S532: if this audio amplifier model has been associated to a set of systems model; Then amended data are saved in the corresponding system layer DSP parameter of this audio amplifier model, and revise synchronously this set of systems model and the corresponding system layer DSP parameter of related each audio amplifier model; If this audio amplifier model not with the set of systems model carry out related, this moment if this system layer DSP parameter can be modified, then amended data are saved in the corresponding system layer DSP parameter of this audio amplifier model; Execution in step S54;

Step S60: finish.

2. a kind of sound system bearing calibration according to claim 1; It is characterized in that: the said input processing parameter of said active audio amplifier comprises 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 sliced data, EQ data;

Every group of said output processing parameter comprises the part-frequency point parameter, and following one or more DSP parameters: output BPPA parameter, export quiet parameter; Output gain parameters, output EQ parameter, output delay parameter; Output reversed polarity parameter, output compression amplitude limit parameter;

The input processing module of said digital signal processor comprises each DSP parameter corresponding sound effect processor of the entity DSP data that comprised with said input processing parameter:

For each EQ parameter, with its corresponding sound effect processor be the EQ sound effect processor that is used for audio signal being compressed amplitude limiting processing according to this EQ parameter;

Each output processing module of said digital signal processor selectively comprises one group output each DSP parameter corresponding sound effect processor that processing parameter comprised corresponding with it:

Part-frequency point parameter for this group output processing parameter; With its corresponding sound effect processor is to be used for according to this part-frequency point parameter a road corresponding output audio signal being carried out frequency-division filter to handle, the frequency division sound effect processor that the frequency range of the audio signal that obtains and corresponding power amplifier unit are complementary;

3. sound system bearing calibration according to claim 1 and 2; It is characterized in that: said active audio amplifier also comprises microprocessor, and this microprocessor is used for according to external control signal this group input processing parameter and each DSP parameter of each group output processing parameter being adjusted.

4. sound system bearing calibration according to claim 3 is characterized in that:

In said step S54,

If the corresponding entity DSP data of these virtual DSP data comprise audio amplifier layer DSP parameter, array layer DSP parameter and system layer DSP parameter; Send the control signal of revising correspondent entity DSP data according to the microprocessor to corresponding active audio amplifier in the virtual DSP data that are modified earlier, this microprocessor is made amendment to the corresponding DSP parameter in the entity DSP data of correspondence according to the DSP parameter in these virtual DSP data that this control signal comprised;

If the corresponding entity DSP data of these virtual DSP data only comprise audio amplifier layer DSP parameter; Send earlier the control signal of modification correspondent entity DSP data to the microprocessor of corresponding active audio amplifier according to these virtual DSP data of institute; This microprocessor calculates a new DSP parameter with each layer DSP parameter stack of these virtual DSP data that this this control signal comprised, and then according to this new DSP parameter the audio amplifier layer DSP parameter of the entity DSP data of correspondence is made amendment;

In said step 55,

In the time of in the corresponding DSP parameter of DSP parameter synchronization to active audio amplifier in one group of virtual output processing parameter that the audio amplifier model is selected; Send the DSP parameter control signal of revising corresponding one group of output processing parameter according to this DSP parameter of this virtual output processing parameter to the microprocessor of corresponding active audio amplifier earlier, this microprocessor is made amendment to the corresponding DSP parameter in one group of output processing parameter of correspondence according to this DSP parameter in this group virtual output processing parameter that this control signal comprised.

5. sound system bearing calibration according to claim 3 is characterized in that:

In said step S54,

If the corresponding entity DSP data of these virtual DSP data only comprise audio amplifier layer DSP parameter; Then elder generation calculates a new DSP parameter according to each layer DSP parameter stack of these virtual DSP data; Microprocessor to corresponding active audio amplifier sends the control signal of revising correspondent entity DSP data again; This microprocessor is according to this new DSP parameter that this control signal comprised, and the audio amplifier layer DSP parameter of the entity DSP data of correspondence is made amendment;

In said step 55,

6. sound system bearing calibration according to claim 3 is characterized in that: this active audio amplifier also comprises the control signal interface that is connected with said microprocessor, and this control signal interface is used to receive external control signal and transfers to said microprocessor.