CN102780959A - Active sound box and speaker system calibration method - Google Patents
Active sound box and speaker system calibration method Download PDFInfo
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Abstract
The invention relates to sound box control technology, in particular to an active sound box and a speaker system calibration method. The active sound box comprises a signal input unit, a digital signal processor, a plurality of power amplifier units and a plurality of speaker units, wherein each power amplifier unit is connected with the matching speaker unit; array layer DSP (digital signal processor) parameters are set in the digital signal processor to simplify the work load for debugging and calibrating the speaker system so as to ensure the debugging result of the speaker system. The calibration method is executed for the speaker system consisting of the active sound boxes, and can simplify the complexity degree and the work load for system debugging by synchronously controlling the plurality of active sound boxes through the array layer DSP parameters without precisely debugging each active sound box by the conventional method, thereby greatly improving the debugging and calibration efficiency.
Description
Technical field
The present invention relates to the audio amplifier control technology, specifically is a kind of active audio amplifier and speaker 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 speaker 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 speaker 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 speaker 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 speaker 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 speaker 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 speaker 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 a kind of speaker system audio amplifier debugging correct operation of simplifying is provided, 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
First technical problem that the present invention solves provides a kind of active audio amplifier, to simplify the debugging correct operation of the speaker system of being made up of this active audio amplifier, improves debugging efficiency, and safeguards system debugging effect.
Second technical problem that the present invention solves provides a kind of speaker system bearing calibration, to simplify the debugging correct operation of speaker system, improves debugging efficiency, and safeguards system debugging effect.
For solving above-mentioned first technical problem, the present invention adopts first technical scheme to be:
A kind of active audio amplifier, it comprises signal input unit, digital signal processor, a plurality of power amplifier unit and a plurality of loudspeaker unit, 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, and every group of output processing parameter comprises one or more DSP parameters;
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, and this array group comprises one or more active audio amplifiers;
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; With corresponding one by one with each DSP parameter of the pairing one group of output processing parameter of this one road output audio signal, each sound effect processor is used for according to the DSP parameter of correspondence one road output audio signal of correspondence being handled each sound effect processor respectively;
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.
For solving above-mentioned second technical problem, the present invention adopts second technical scheme to be:
A kind of speaker system bearing calibration; This speaker system comprises a plurality of as first technical scheme or the described active audio amplifier of its improvement project; This speaker system is provided with one or more array group, and/or one or more set of systems, and this bearing calibration may further comprise the steps:
Step S10: beginning;
Step S20: if select to revise the audio amplifier layer DSP parameter of input processing parameter, then execution in step S21; If select to revise the array layer DSP parameter of input processing parameter, then execution in step S22; If select to revise the system layer DSP parameter of input processing parameter, then execution in step S23; If select to revise output processing parameter, then execution in step S24;
Step S21: revise selected audio amplifier layer DSP parameter, and amended data are saved to the active audio amplifier under this audio amplifier layer DSP parameter; Execution in step S20 or step S30;
Step S22: revise selected array layer DSP parameter, if the active audio amplifier under this array layer DSP parameter does not belong to the audio amplifier member of array group, so amended data will be saved in the respective array layer DSP parameter of this active audio amplifier; If the active audio amplifier under this array layer DSP parameter and the audio amplifier member of some array group, so amended data are with being saved to respectively in the corresponding array layer DSP parameter of this each audio amplifier of array group member; Execution in step S20 or step S30;
Step S23: revise selected system layer DSP parameter, if the active audio amplifier under this system layer DSP parameter does not belong to the audio amplifier member of set of systems, so amended data will be saved in the corresponding system layer DSP parameter of this active audio amplifier; If the active audio amplifier under this system layer DSP parameter and the audio amplifier member of some set of systems, so amended data are with being saved to respectively in the corresponding system layer DSP parameter of this each audio amplifier of set of systems member; Execution in step S20 or step S30;
Step S24: revise selected DSP parameter, amended data are saved under this DSP parameter in the active audio amplifier in the corresponding DSP parameter of corresponding one group of output processing parameter;
Step S30: finish.
Compared with prior art, beneficial effect is:
Prior art is if need be optimized the sound effect of whole speaker 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 speaker system can how to change; Increased difficulty and complexity that system debug is proofreaied and correct, so the speaker 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.
Active audio amplifier and speaker system bearing calibration thereof 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 speaker system reach the instructions for use of system, optimize the whole acoustic efficiency of speaker system to greatest extent, but the difficulty and the workload of speaker system debugging significantly reduce.
Present technique is to think deeply the debugging correction work of whole audio amplifier from the angle that system uses; 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 (in some improvement project of present technique, also further passing through 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 speaker system is needed just for this.
Generally speaking; Present technique is divided into audio amplifier through the input of audio amplifier digital signal processor is handled, the two-layer DSP of array group handles; Not only can simplify the difficulty that speaker system debugging is proofreaied and correct, reduce workload, but also can obtain system's sound effect of making us comparatively satisfied.
Description of drawings
Fig. 1 is the active audio amplifier structural representation (is example with the two divided-frequency audio amplifier) of embodiment one;
Fig. 2 is the structural representation of the digital signal processor of embodiment one;
Fig. 3 is digital signal processor a kind of sketch map of concrete structure wherein of embodiment one;
Fig. 4 is digital signal processor a kind of sketch map of concrete structure wherein of embodiment two;
Fig. 5 is the schematic flow sheet of the speaker system bearing calibration of embodiment four;
Fig. 6 is the schematic flow sheet of the speaker system bearing calibration of embodiment five.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are further described.
Embodiment one
As shown in Figure 1; The active audio amplifier of present embodiment 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, 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, and this array group comprises one or more active audio amplifiers.
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; With corresponding one by one with each DSP parameter of the pairing one group of output processing parameter of this one road output audio signal, each sound effect processor is used for according to the DSP parameter of correspondence one road output audio signal of correspondence being handled each sound effect processor respectively.
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 the digital signal processor 12 of present technique, 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.The situation of output processing module 123 can be by that analogy.
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 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 the active audio amplifier of present technique not only can be realized the adjustment correction of single audio amplifier; Can also proofread and correct the necessary base condition of creating to the synchronous adjustment of a plurality of audio amplifiers for realizing; The adjustment correction work of whole speaker system can be simplified thus, the adjustment effect can also be ensured.
The input processing parameter of present embodiment 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.Wherein each entity DSP data all comprises 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.
Every group of output processing parameter of present embodiment 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.
The value volume and range of product of the sound effect processor that 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.
As shown in Figure 3; Suppose that the input processing parameter specifically comprises: input quiet data, input gain data, input time delay data, EQ data; Wherein this input quiet data, input gain data, input time delay data only comprise audio amplifier layer DSP parameter (promptly include only the audio amplifier layer respectively and import quiet parameter, audio amplifier layer input gain parameter, audio amplifier layer input time delay parameter) respectively, and these EQ data comprise audio amplifier layer EQ parameter and array layer EQ parameter.121 of input processing modules comprise so: (1) one is used for importing quiet parameter according to the audio amplifier layer audio signal is carried out the quiet sound effect processor of input that silence switch is handled; (2) one are used for according to audio amplifier layer input gain parameter audio signal being carried out the input gain sound effect processor that input gain is handled; (3) one are used for according to audio amplifier layer input time delay parameter audio signal being carried out the input time delay sound effect processor that input time delay is handled; (4) one are used for according to the audio amplifier layer EQ parameter of input processing parameter input audio signal being carried out the audio amplifier layer EQ sound effect processor that EQ handles, and (5) one are used for according to the array layer EQ parameter of input processing parameter input audio signal being carried out the array layer EQ sound effect processor that EQ handles.
Suppose that every group of output processing parameter specifically comprises: a part-frequency point parameter, an output BPPA parameter, a quiet parameter of output, an output gain parameters, an output EQ parameter, an output delay parameter, an output reversed polarity parameter and an output compression amplitude limit parameter.Each output processing module 123 comprises so: (1) one is used for according to this part-frequency point parameter one road output audio signal of correspondence being carried out frequency-division filter and handles, the frequency division sound effect processor that the frequency range of the audio signal that obtains and corresponding power amplifier unit 13 are complementary; (2) output BPPA sound effect processors that are used for one road output audio signal of correspondence being carried out phase response adjustment processing according to this output BPPA parameter; (3) quiet sound effect processors of output that are used for one road output audio signal of correspondence being carried out the silence switch processing according to this quiet parameter; (4) output gain sound effect processors that are used for one road output audio signal of correspondence being carried out gain process according to this output gain parameters; (5) output EQ sound effect processors that are used for one road output audio signal of correspondence being carried out the EQ processing according to this output EQ parameter; (6) output time-delay sound effect processors that are used for one road output audio signal of correspondence being carried out delay process according to this output delay parameter; (7) output reversed polarity sound effect processors that are used for one road output audio signal of correspondence being carried out the reversed polarity operational processes according to this output reversed polarity parameter; (8) output compression amplitude limit sound effect processors that are used for one road output audio signal of correspondence being compressed amplitude limiting processing according to this output compression amplitude limit parameter.
In addition; This active audio amplifier also comprises microprocessor 15; This microprocessor 15 comprises: be used for the DSP input parameter adjusting module each DSP parameter of this group input processing parameter adjusted according to external control signal, and be used for the DSP output parameter adjusting module each DSP parameter of each group output processing parameter adjusted according to external control signal.Further, 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: the active audio amplifier of present embodiment is in each entity DSP data that the input processing parameter comprises; The entity DSP data that include array layer DSP parameter also comprise one with the identical system layer DSP parameter of its audio amplifier layer DSP parameter kind; This system layer DSP parameter is provided with to each audio amplifier member of set of systems under this active audio amplifier, and this set of systems comprises one or more active audio amplifiers.
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.
Speaker 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; Simplified the debugging correction work of audio amplifier group, ensured the debugging effect of audio amplifier group, but can't adjust the whole audio of speaker system.For this reason, present technique is further set up system layer DSP parameter in the input processing parameter in active audio amplifier, and then the audio that speaker system is whole is further guaranteed in the further whole debugging work of simplified system.
As shown in Figure 4; Suppose that the input processing parameter specifically comprises: input quiet data, input gain data, input time delay data, EQ data; Wherein this input quiet data, input gain data, input time delay data only comprise audio amplifier layer DSP parameter (promptly include only the audio amplifier layer respectively and import quiet parameter, audio amplifier layer input gain parameter, audio amplifier layer input time delay parameter) respectively, and these EQ data comprise audio amplifier layer EQ parameter, array layer EQ parameter and system layer EQ parameter.Input processing module then comprises so: (1) one is used for importing quiet parameter according to the audio amplifier layer audio signal is carried out the quiet sound effect processor of input that silence switch is handled; (2) one are used for according to audio amplifier layer input gain parameter audio signal being carried out the input gain sound effect processor that input gain is handled; (3) one are used for according to audio amplifier layer input time delay parameter audio signal being carried out the input time delay sound effect processor that input time delay is handled; (4) one are used for according to the audio amplifier layer EQ parameter of input processing parameter input audio signal being carried out the audio amplifier layer EQ sound effect processor that EQ handles; (5) one are used for according to the array layer EQ parameter of input processing parameter input audio signal being carried out the array layer EQ sound effect processor that EQ handles; And (6) array layer EQ sound effect processors that are used for audio signal being carried out the EQ processing according to this array layer EQ parameter.
Embodiment three
The difference of present embodiment and embodiment one is: the active audio amplifier of present embodiment is in the entity DSP data that the input processing parameter comprises; Have at least entity DSP data also comprise one with the identical system layer DSP parameter of its audio amplifier layer DSP parameter kind; This system layer DSP parameter is provided with to each audio amplifier member of set of systems under this active audio amplifier, and this set of systems comprises one or more active audio amplifiers.
Embodiment four
Present embodiment is a kind of speaker system bearing calibration; This speaker system comprises a plurality of active audio amplifiers; This speaker system is provided with one or more array group; And/or one or more set of systems, each array group comprises one or more active audio amplifiers, each set of systems comprises one or more active audio amplifiers.This active audio amplifier is embodiment two or embodiment three described active audio amplifiers.As shown in Figure 5, the speaker system bearing calibration of present embodiment may further comprise the steps:
Step S10: beginning;
Step S20: if select to revise the audio amplifier layer DSP parameter of input processing parameter, then execution in step S21; If select to revise the array layer DSP parameter of input processing parameter, then execution in step S22; If select to revise the system layer DSP parameter of input processing parameter, then execution in step S23; If select to revise output processing parameter, then execution in step S24;
Step S21: revise selected audio amplifier layer DSP parameter, and amended data are saved to the active audio amplifier under this audio amplifier layer DSP parameter; Execution in step S20 or step S30; (this step S realizes the adjustment to single audio amplifier)
Step S22: revise selected array layer DSP parameter, if the active audio amplifier under this array layer DSP parameter does not belong to the audio amplifier member of (any one) array group, so amended data will be saved in the respective array layer DSP parameter of this active audio amplifier; If the active audio amplifier under this array layer DSP parameter and the audio amplifier member of some array group, so amended data are with being saved to respectively in the corresponding array layer DSP parameter of this each audio amplifier of array group member; Execution in step S20 or step S30; (this step realizes the synchronous adjustment to a plurality of audio amplifiers of audio amplifier group)
Step S23: revise selected system layer DSP parameter, if the active audio amplifier under this system layer DSP parameter does not belong to the audio amplifier member of (any one) set of systems, so amended data will be saved in the corresponding system layer DSP parameter of this active audio amplifier; If the active audio amplifier under this system layer DSP parameter and the audio amplifier member of some set of systems, so amended data are with being saved to respectively in the corresponding system layer DSP parameter of this each audio amplifier of set of systems member; Execution in step S20 or step S30; (this step realizes the synchronous adjustment to a plurality of audio amplifiers of set of systems)
Step S24: revise selected DSP parameter, amended data are saved under this DSP parameter in the active audio amplifier in the corresponding DSP parameter of corresponding one group of output processing parameter;
Step S30: finish.
Embodiment five
Present embodiment is a kind of speaker system bearing calibration, and 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.This active audio amplifier is embodiment one a described active audio amplifier.As shown in Figure 6, the speaker system bearing calibration of present embodiment may further comprise the steps:
Step S10: beginning;
Step S20: if select to revise the audio amplifier layer DSP parameter of input processing parameter, then execution in step S21; If select to revise the array layer DSP parameter of input processing parameter, then execution in step S22; If select to revise output processing parameter, then execution in step S24;
Step S21: revise selected audio amplifier layer DSP parameter, and amended data are saved to the active audio amplifier under this audio amplifier layer DSP parameter; Execution in step S20 or step S30; (this step S realizes the adjustment to single audio amplifier)
Step S22: revise selected array layer DSP parameter, if the active audio amplifier under this array layer DSP parameter does not belong to the audio amplifier member of (any one) array group, so amended data will be saved in the respective array layer DSP parameter of this active audio amplifier; If the active audio amplifier under this array layer DSP parameter and the audio amplifier member of some array group, so amended data are with being saved to respectively in the corresponding array layer DSP parameter of this each audio amplifier of array group member; Execution in step S20 or step S30; (this step realizes the synchronous adjustment to a plurality of audio amplifiers of audio amplifier group)
Step S24: revise selected DSP parameter, amended data are saved under this DSP parameter in the active audio amplifier in the corresponding DSP parameter of corresponding one group of output processing parameter;
Step S30: finish.
Claims (9)
1. active audio amplifier, it is characterized in that: this active audio amplifier comprises signal input unit, digital signal processor, a plurality of power amplifier unit and a plurality of loudspeaker unit, 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, and every group of output processing parameter comprises one or more DSP parameters;
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, and this array group comprises one or more active audio amplifiers;
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; With corresponding one by one with each DSP parameter of the pairing one group of output processing parameter of this one road output audio signal, each sound effect processor is used for according to the DSP parameter of correspondence one road output audio signal of correspondence being handled each sound effect processor respectively;
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.
2. active audio amplifier according to claim 1; It is characterized in that: in the entity DSP data that said input processing parameter comprises; The said entity DSP data that include array layer DSP parameter also comprise one with the identical system layer DSP parameter of its audio amplifier layer DSP parameter kind; This system layer DSP parameter is provided with to each audio amplifier member of set of systems under this active audio amplifier, and this set of systems comprises one or more active audio amplifiers.
3. active audio amplifier according to claim 1; It is characterized in that: in the entity DSP data that said input processing parameter comprises; Have at least entity DSP data also comprise one with the identical system layer DSP parameter of its audio amplifier layer DSP parameter kind; This system layer DSP parameter is provided with to each audio amplifier member of set of systems under this active audio amplifier, and this set of systems comprises one or more active audio amplifiers.
4. according to the arbitrary described active audio amplifier of claim 1 to 3; It is characterized in that: said input processing parameter 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.
5. active audio amplifier according to claim 1; It is characterized in that: said input processing parameter comprises input quiet data, input gain data, input time delay data, EQ data; Wherein this input quiet data, input gain data, input time delay data only comprise audio amplifier layer DSP parameter respectively; These EQ data comprise audio amplifier layer EQ parameter and array layer EQ parameter, and said input processing module comprises: one is used for importing quiet parameter according to the audio amplifier layer audio signal is carried out the quiet sound effect processor of input that silence switch is handled; One is used for according to audio amplifier layer input gain parameter audio signal being carried out the input gain sound effect processor that input gain is handled; One is used for according to audio amplifier layer input time delay parameter audio signal being carried out the input time delay sound effect processor that input time delay is handled; One is used for according to the audio amplifier layer EQ parameter of said input processing parameter input audio signal being carried out the audio amplifier layer EQ sound effect processor that EQ handles, and one is used for according to the array layer EQ parameter of said input processing parameter input audio signal being carried out the array layer EQ sound effect processor that EQ handles.
6. active audio amplifier according to claim 2; It is characterized in that: said input processing parameter comprises input quiet data, input gain data, input time delay data, EQ data; Wherein this input quiet data, input gain data, input time delay data only comprise audio amplifier layer DSP parameter respectively; These EQ data comprise audio amplifier layer EQ parameter, array layer EQ parameter and system layer EQ parameter, and said input processing module comprises: one is used for importing quiet parameter according to the audio amplifier layer audio signal is carried out the quiet sound effect processor of input that silence switch is handled; One is used for according to audio amplifier layer input gain parameter audio signal being carried out the input gain sound effect processor that input gain is handled; One is used for according to audio amplifier layer input time delay parameter audio signal being carried out the input time delay sound effect processor that input time delay is handled; One is used for according to the audio amplifier layer EQ parameter of input processing parameter input audio signal being carried out the audio amplifier layer EQ sound effect processor that EQ handles, and one is used for according to the array layer EQ parameter of input processing parameter input audio signal being carried out the array layer EQ sound effect processor that EQ handles.
7. according to claim 1 to 3,5,6 each described active audio amplifiers; It is characterized in that: this active audio amplifier also comprises microprocessor; This microprocessor comprises: be used for the DSP input parameter adjusting module each DSP parameter of this group input processing parameter adjusted according to external control signal, and be used for the DSP output parameter adjusting module each DSP parameter of each group output processing parameter adjusted according to external control signal.
8. active audio amplifier according to claim 7 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.
9. speaker system bearing calibration; It is characterized in that: this speaker system comprises a plurality of like the arbitrary described active audio amplifier of claim 1 to 8; This speaker system is provided with one or more array group, and/or one or more set of systems, and this bearing calibration may further comprise the steps:
Step S10: beginning;
Step S20: if select to revise the audio amplifier layer DSP parameter of input processing parameter, then execution in step S21; If select to revise the array layer DSP parameter of input processing parameter, then execution in step S22; If select to revise the system layer DSP parameter of input processing parameter, then execution in step S23; If select to revise output processing parameter, then execution in step S24;
Step S21: revise selected audio amplifier layer DSP parameter, and amended data are saved to the active audio amplifier under this audio amplifier layer DSP parameter; Execution in step S20 or step S30;
Step S22: revise selected array layer DSP parameter, if the active audio amplifier under this array layer DSP parameter does not belong to the audio amplifier member of array group, so amended data will be saved in the respective array layer DSP parameter of this active audio amplifier; If the active audio amplifier under this array layer DSP parameter and the audio amplifier member of some array group, so amended data are with being saved to respectively in the corresponding array layer DSP parameter of this each audio amplifier of array group member; Execution in step S20 or step S30;
Step S23: revise selected system layer DSP parameter, if the active audio amplifier under this system layer DSP parameter does not belong to the audio amplifier member of set of systems, so amended data will be saved in the corresponding system layer DSP parameter of this active audio amplifier; If the active audio amplifier under this system layer DSP parameter and the audio amplifier member of some set of systems, so amended data are with being saved to respectively in the corresponding system layer DSP parameter of this each audio amplifier of set of systems member; Execution in step S20 or step S30;
Step S24: revise selected DSP parameter, amended data are saved under this DSP parameter in the active audio amplifier in the corresponding DSP parameter of corresponding one group of output processing parameter;
Step S30: finish.
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