CN102780967A - Method for debugging speaker system - Google Patents
Method for debugging speaker system Download PDFInfo
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- CN102780967A CN102780967A CN201210282109XA CN201210282109A CN102780967A CN 102780967 A CN102780967 A CN 102780967A CN 201210282109X A CN201210282109X A CN 201210282109XA CN 201210282109 A CN201210282109 A CN 201210282109A CN 102780967 A CN102780967 A CN 102780967A
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Abstract
The invention relates to a sound box control technology, in particular to a method for debugging a speaker system. The method comprises a step of establishing a speaker system model, a step of modifying virtual input processing parameters and a step of modifying virtual output processing parameters, wherein the speaker system model comprises a plurality of sound box models; each sound box model corresponds to one entity speaker and comprises the virtual input processing parameters and the virtual output processing parameters; the virtual input processing parameters comprise one or a plurality of pieces of virtual DSP (Digital Signal Processor) data; and each piece of DSP data comprises a plurality of layers of DSP parameters which belong to the same type. Therefore, no matter how many layers of DSP parameters each entity DSP data of each active speaker comprises, the multilayer adjustment of the input processing parameters of system layers can be implemented by the technology, so that the debugging and correcting operation of the speaker system is simplified, the debugging efficiency is improved and the debugging effect of the system is ensured.
Description
Technical field
The present invention relates to the audio amplifier control technology, specifically is a kind of speaker system adjustment method.
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 (speaker 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 speaker system adjustment method, to simplify the debugging correct operation of speaker system, improves debugging efficiency, and safeguards system debugging effect.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is:
A kind of speaker system adjustment method, this speaker system comprises a plurality of active audio amplifiers, and this speaker system is provided with one or more array group, and each array group comprises one or more 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 the identical array 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; 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 adjustment method may further comprise the steps:
Step S10: set up the speaker system model; This speaker system model comprises a plurality of audio amplifier models; Each audio amplifier model is corresponding with a active audio amplifier in the speaker system, and each audio amplifier model comprises one group of virtual input processing parameter and the virtual output processing parameter of many groups, and this is organized virtual input processing parameter and comprises a plurality of virtual DSP data; Each virtual DSP data comprises an audio amplifier layer DSP parameter and an array 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: if select to revise virtual input processing parameter, execution in step S30; If select to revise virtual output processing parameter, execution in step S40;
Step S30: if select to repair audio amplifier layer DSP parameter, execution in step S31; If select to revise array layer DSP parameter, execution in step S32;
Step S31: 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 S34;
Step S32: revise selected array layer DSP parameter; If the active audio amplifier that the audio amplifier model is corresponding under this array layer DSP parameter does not belong to the audio amplifier member of arbitrary array group; This moment is if this array layer DSP parameter can be modified; So amended data will be saved in the corresponding array layer DSP of this audio amplifier model parameter, execution in step S34; If the active audio amplifier that the audio amplifier model is corresponding under this array layer DSP parameter belongs to the audio amplifier member of a certain array group, so amended data are in the array layer DSP parameter that is saved to pairing each audio amplifier model of this an array group respectively, execution in step S34;
Step S34: the audio amplifier model that modification takes place for the virtual DSP data:
If the corresponding entity DSP data of this virtual DSP data comprise audio amplifier layer DSP parameter, array 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 the corresponding entity DSP data of these virtual DSP data only comprise audio amplifier layer DSP parameter; So earlier the stack of each layer DSP parameter of these virtual DSP data is calculated a 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 S50;
Step S40: 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 S50;
Step S50: 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.
Speaker system adjustment method 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, from audio amplifier itself, two aspects of speaker array group the DSP parameter of each audio amplifier to be adjusted, it is accurate inadequately that this adjustment seems; Be 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
The structural representation of the active audio amplifier of Fig. 1 embodiment;
The digital signal processor architecture sketch map of the active audio amplifier of Fig. 2 embodiment;
The principle schematic of the digital signal processor of the active audio amplifier of Fig. 3 embodiment;
Fig. 4 is the flow chart of the speaker system adjustment method of embodiment.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are further described.
The speaker system of the speaker system adjustment method of present embodiment comprises a plurality of active audio amplifiers, and this speaker system is provided with one or more array group, and each array group comprises one or more active audio amplifiers.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 the identical array 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.
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, the DSP parameter that each promptly related with same array 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.
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 speaker system is proofreaied and correct.
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 speaker 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.
The input processing module 121 of digital signal processor 12 comprises each DSP parameter corresponding sound effect processor with the input entity DSP data that processing parameter comprised:
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, 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.
As shown in Figure 4, the speaker system adjustment method of present embodiment may further comprise the steps:
Step S10: set up the speaker system model; This speaker system model comprises a plurality of audio amplifier models; Each audio amplifier model and a active audio amplifier corresponding (unique corresponding) in the speaker 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 and an array 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 input 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: if select to revise virtual input processing parameter, execution in step S30; If select to revise virtual output processing parameter, execution in step S40;
Step S30: if select to repair audio amplifier layer DSP parameter, execution in step S31; If select to revise array layer DSP parameter, execution in step S32;
Step S31: 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 S34;
Step S32: revise selected array layer DSP parameter; If the active audio amplifier that the audio amplifier model is corresponding under this array layer DSP parameter does not belong to the audio amplifier member of arbitrary array group; This moment is 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); So amended data will be saved in the corresponding array layer DSP of this audio amplifier model parameter, execution in step S34; If the active audio amplifier that the audio amplifier model is corresponding under this array layer DSP parameter belongs to the audio amplifier member of a certain array group, so amended data are in the array layer DSP parameter that is saved to pairing each audio amplifier model of this an array group respectively, execution in step S34; (each audio amplifier model be with each active audio amplifier one to one, each self-corresponding audio amplifier model of each audio amplifier member of array group and this array group are that corresponding relation is arranged so)
Step S34: the audio amplifier model that modification takes place for the virtual DSP data:
If the corresponding entity DSP data of this virtual DSP data comprise audio amplifier layer DSP parameter, array layer DSP parameter, the DSP parameter of change (possibly be audio amplifier layer DSP parameter or array layer DSP parameter number) synchronously in the corresponding DSP parameter to the correspondent entity DSP data in these virtual DSP data so;
If the corresponding entity DSP data of these virtual DSP data 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 a 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 S50;
Step S40: 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 S50;
Step S50: 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 step S30: suppose that the array group first comprises active audio amplifier A, active audio amplifier B and active audio amplifier C, its corresponding audio amplifier model is respectively audio amplifier model A ', audio amplifier Model B ' and the audio amplifier MODEL C '.The input processing parameter of each active audio amplifier comprises entity EQ data, and correspondingly 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 and an array 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 2 layers of EQ parameter: audio amplifier layer EQ parameter and array 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 ', the stack of array layer EQ parameter to be calculated new EQ parameter; And the stack audio that in active audio amplifier A, obtains of two 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, 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, the array 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, the stack of array 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.
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 2 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 twice silence switch processing, twice delay process, twice gain process and twice reversed polarity processing so, and the input processing module 121 of digital signal processor 12 comprises 2 quiet sound effect processors, 2 time-delay sound effect processors, 2 gain sound effect processors and 2 reversed polarity sound effect processors in other words.
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.
Present embodiment can be through the resource beyond the digital signal processor 12; For example can on the sound box system controlling platform, realize the described speaker system adjustment method 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; Accomplish corresponding D SP parameter overlap-add operation earlier in the microprocessor 15 in controlling platform or active audio amplifier, reduce the data volume of being managed and the amount of calculation of digital signal processor 12, make rational use of resources and improve 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 S34:
If the corresponding entity DSP data of these virtual DSP data comprise audio amplifier layer DSP parameter, array 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 40,
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.
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; Superpose and calculate synthetic DSP parameter through external resource (digital signal processor 12 resource in addition) earlier with each layer DSP parameter of these entities DSP data corresponding virtual DSP data, and then transfer in the corresponding DSP data of corresponding active audio amplifier.And for comparatively complicated DSP parameter, for example EQ is provided with 2 layers of EQ parameter in the input processing parameter of active audio amplifier, is respectively audio amplifier layer EQ parameter, array 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 12, can make full use of external resource again, further improved the real-time audio signal handling capacity of digital signal processor 12.
Claims (5)
1. speaker system adjustment method, it is characterized in that: this speaker system comprises a plurality of active audio amplifiers, and this speaker system is provided with one or more array group, and each array group comprises one or more 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 the identical array 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; 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 adjustment method may further comprise the steps:
Step S10: set up the speaker system model; This speaker system model comprises a plurality of audio amplifier models; Each audio amplifier model is corresponding with a active audio amplifier in the speaker system, and each audio amplifier model comprises one group of virtual input processing parameter and the virtual output processing parameter of many groups, and this is organized virtual input processing parameter and comprises a plurality of virtual DSP data; Each virtual DSP data comprises an audio amplifier layer DSP parameter and an array 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: if select to revise virtual input processing parameter, execution in step S30; If select to revise virtual output processing parameter, execution in step S40;
Step S30: if select to repair audio amplifier layer DSP parameter, execution in step S31; If select to revise array layer DSP parameter, execution in step S32;
Step S31: 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 S34;
Step S32: revise selected array layer DSP parameter; If the active audio amplifier that the audio amplifier model is corresponding under this array layer DSP parameter does not belong to the audio amplifier member of arbitrary array group; This moment is if this array layer DSP parameter can be modified; So amended data will be saved in the corresponding array layer DSP of this audio amplifier model parameter, execution in step S34; If the active audio amplifier that the audio amplifier model is corresponding under this array layer DSP parameter belongs to the audio amplifier member of a certain array group, so amended data are in the array layer DSP parameter that is saved to pairing each audio amplifier model of this an array group respectively, execution in step S34;
Step S34: the audio amplifier model that modification takes place for the virtual DSP data:
If the corresponding entity DSP data of this virtual DSP data comprise audio amplifier layer DSP parameter, array 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 the corresponding entity DSP data of these virtual DSP data only comprise audio amplifier layer DSP parameter; So earlier the stack of each layer DSP parameter of these virtual DSP data is calculated a 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 S50;
Step S40: 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 S50;
Step S50: finish.
2. a kind of speaker system adjustment method 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:
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 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;
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.
3. speaker system adjustment method 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. speaker system adjustment method according to claim 3 is characterized in that:
In said step S34,
If the corresponding entity DSP data of these virtual DSP data comprise audio amplifier layer DSP parameter, array 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 40,
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. speaker system adjustment method 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.
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