CN102780960B - A kind of active audio amplifier and speaker system calibration method - Google Patents
A kind of active audio amplifier and speaker system calibration method Download PDFInfo
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Abstract
The present invention relates to speaker control technology, specifically a kind of active audio amplifier and speaker system calibration method.This active audio amplifier includes signal input unit, digital signal processor, power amplifier unit and loudspeaker unit, this digital signal processor is wherein provided with array layer DSP parameter, therefore can simplify speaker system debugging correction work amount, and ensure that speaker system debugs result.This bearing calibration is the speaker system formed for above-mentioned active audio amplifier and implements, traditional practice accurately debugging each active audio amplifier has been abandoned in this bearing calibration, multiple active audio amplifiers are controlled by array layer DSP parameter synchronization, simplify complexity and the workload of system debug, greatly improve the work efficiency of debugging correction.
Description
Technical field
The present invention relates to speaker control technology, specifically a kind of active audio amplifier and speaker system calibration method.
Background technology
The audio amplifier (also referred to as active audio amplifier) of embedded digital signal processor (DSP) and power amplifier can carry out the operations such as EQ adjustment, time delay, amplitude limit and frequency dividing by digital signal processor to input audio signal, makes audio amplifier reach optimum Working.
As follows to the conventional method of adjustment of the speaker system of active audio amplifier composition at present: (1) first adjusts input processing parameter and output processing parameter (the above audio amplifier of two divided-frequency), the such as EQ, time delay, amplitude limit etc. of the digital signal processor of single audio amplifier；(2) effect of speaker system is tested, refine test data by rule of thumb and further and the digital signal processor parameter of relevant audio amplifier is adjusted；(3) again the whole structure of speaker system is tested, according to test result, again the digital signal processor parameter of active audio amplifier is adjusted.It is to say, for realizing preferably system acoustic effect, need, constantly according to overall acoustic efficiency, repeatedly the parameter of the digital signal processor of each audio amplifier to be adjusted.
The debugging bearing calibration of this speaker system (speaker system) there is problems in that
(1) system debug correct operation is loaded down with trivial details, complicated, and workload is big.A lot of owing to affecting the factor of system acoustic effect, adjust which audio amplifier, and adjust which parameter of audio amplifier, there is no a fixed pattern, can only engineering staff can only audio amplifier or region-by-region (audio amplifier in region is also to be adjusted one by one) be adjusted one by one, again each audio amplifier is adjusted further according to test result after adjustment, i.e. needs be repeated continuously the acoustic efficiency of measurement system and adjust each audio amplifier, can be only achieved preferably system sound effect.The original workload that audio amplifier was adjusted one by one is the biggest, and also needs to now to repeat many times that (number of times is unknown, and spent time and required workload are the hugest.For layman, the task that speaker system debugging correction has been practically impossible to.
(2) system is even across repeatedly adjusting correction, but still it cannot be guaranteed that can obtain preferably acoustic efficiency.As it has been described above, the factor affecting acoustic efficiency is a lot, many times, for time-consuming, engineering staff the most rule of thumb judges which should adjust which parameter of which audio amplifier.Even if engineering staff's audio amplifier one by one is adjusted, but owing to speaker system is a systematic engineering of business, can influence each other between each audio amplifier, and engineering staff is being adjusted each audio amplifier when, it is difficult to prediction and judges the audio amplifier after adjusting, other audio amplifiers can be produced what impact (or what impact other audio amplifiers can produce to this audio amplifier), therefore can only estimate by rule of thumb.Therefore, this debugging bearing calibration, much less ordinary person, even for the personnel through professional training, also cannot ensure that sound can obtain gratifying system sound effect.
Therefore simplify speaker system audio amplifier debugging correct operation, improve debugging efficiency, and safeguards system debugging effect is a technical problem urgently to be resolved hurrily.Solve this technical barrier, for the development and application promoting Specialty Hi-Fi technology, there is important function.
Summary of the invention
The first technical problem that the present invention solves is to provide a kind of active audio amplifier, to simplify the debugging correct operation of the speaker system being made up of this active audio amplifier, improves debugging efficiency, and safeguards system debugging effect.
The second technical problem that the present invention solves is to provide a kind of speaker system calibration method, to simplify the debugging correct operation of speaker system, improves debugging efficiency, and safeguards system debugging effect.
For solving above-mentioned first technical problem, the present invention uses the first technical scheme to be:
A kind of active audio amplifier, it includes signal input unit, digital signal processor, power amplifier unit and loudspeaker unit, and this signal input unit is for receiving the audio signal of the outside input of audio amplifier, and transmits to this digital signal processor；
This digital signal processor is provided with data memory module, in this data memory module, storage has one group of input processing parameter, this group input processing parameter includes multiple entity DSP data, 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 arranged for this active audio amplifier；And at least entity DSP data also include an array layer DSP parameter identical with its audio amplifier layer DSP parameter kind, this array layer DSP parameter is each audio amplifier member for array group belonging to this active audio amplifier and the DSP parameter that arranges, and this array group includes one or more active audio amplifier；
This digital signal processor also includes input processing module, this input processing module includes the sound effect processor of multiple series connection, each sound effect processor respectively with each DSP parameter one_to_one corresponding of this group input processing parameter, each sound effect processor is for carrying out corresponding signal processing operations according to corresponding DSP parameter to audio signal；
This power amplifier unit is for receiving the audio signal processed through this input processing module, and transmits to this loudspeaker unit after being amplified this audio signal processing.
For solving above-mentioned second technical problem, the present invention uses the second technical scheme to be:
A kind of speaker system calibration method, this speaker system includes multiple active audio amplifier as described in the first technical scheme or its improvement project, this speaker system is provided with one or more array group, and/or one or more system group, and this bearing calibration comprises the following steps:
Step S10: start；
Step S20: if selecting the audio amplifier layer DSP parameter of amendment input processing parameter, then perform step S21；If selecting the array layer DSP parameter of amendment input processing parameter, then perform step S22；If selecting the system layer DSP parameter of amendment input processing parameter, then perform step S23；
Step S21: the audio amplifier layer DSP parameter that amendment is selected, and amended data are preserved to the active audio amplifier belonging to this audio amplifier layer DSP parameter；Perform step S20 or step S30；
Step S22: the array layer DSP parameter that amendment is selected, if the active audio amplifier belonging to this array layer DSP parameter is not belonging to the audio amplifier member of array group, then amended data will preserve to the respective array layer DSP parameter of this active audio amplifier；If the audio amplifier member of the active audio amplifier belonging to this array layer DSP parameter and some array group, then amended data will preserve to array layer DSP parameter corresponding to this array group each audio amplifier member respectively；Perform step S20 or step S30；
Step S23: the system layer DSP parameter that amendment is selected, if this active audio amplifier belonging to system layer DSP parameter is not belonging to the audio amplifier member of system group, then amended data will preserve to the corresponding system layer DSP parameter of this active audio amplifier；If the audio amplifier member of this active audio amplifier belonging to system layer DSP parameter and some system group, then amended data will preserve to system layer DSP parameter corresponding to this system group each audio amplifier member respectively；Perform step S20 or step S30；
Step S30: terminate.
Compared with prior art, provide the benefit that:
The sound effect of whole speaker system is if desired optimized by prior art, need each audio amplifier is adjusted the most repeatedly correction, but also belonging to this audio amplifier, how the acoustics of array group and whole speaker system can change after the unpredictable indivedual audio amplifier of adjustment, add difficulty and the complexity of system debug correction, therefore to debug not only difficulty bigger for the speaker system of prior art, very professional sound technique personnel are needed to operate, and the workload debugged is very big, and debugging effect also cannot ensure.
Active audio amplifier based on this technology and speaker system calibration method thereof, engineers and technicians can give up the traditional method accurately adjusting each audio amplifier, then by the basis of each audio amplifier of basic correction, in units of group, the audio amplifier member to each array group unifies debugging correction, the acoustics (transmission frequency characteristic) making each array group and whole speaker system reaches the use requirement of system, optimize the overall acoustic efficiency of speaker system to greatest extent, but the difficulty of speaker system debugging and workload are greatly reduced.
This technology is to think deeply the debugging correction work of whole audio amplifier from the angle of system use, both the self-characteristic of audio amplifier had been taken into full account, take into full account again between each audio amplifier of same array group, interactional factor between each array group of same system, by single audio amplifier DSP parameter adjustment, array group DSP parameter adjustment (the most further by system group DSP parameter adjustment in some improvement project of this technology), from audio amplifier itself, the DSP parameter of each audio amplifier is adjusted by two aspects of speaker array group (also add system layer in some technical scheme of this technology), this adjustment seems the most accurate, it is not that each audio amplifier can be debugged to optimum state, but but can obtain optimal system sound effect this just speaker system actually used required.
Generally speaking, this technology by being divided into audio amplifier, array group two-layer DSP process by the input processing of audio amplifier digital signal processor, it is possible not only to simplify the difficulty of speaker system debugging correction, reduces workload, but also the system sound effect making us more being satisfied with can be obtained.
Accompanying drawing explanation
Fig. 1 is the active audio amplifier structural representation of embodiment one；
Fig. 2 is the structural representation of the digital signal processor of embodiment one；
Fig. 3 is the schematic diagram of the digital signal processor one of which concrete structure of embodiment one；
Fig. 4 is the schematic diagram of the digital signal processor one of which concrete structure of embodiment two；
Fig. 5 is the schematic flow sheet of the speaker system calibration method of embodiment four；
Fig. 6 is the schematic flow sheet of the speaker system calibration method of embodiment five.
Detailed description of the invention
Below in conjunction with the accompanying drawings embodiments of the invention are further described.
Embodiment one
As it is shown in figure 1, the active audio amplifier of the present embodiment includes signal input unit 11, digital signal processor 12, power amplifier unit 13 and loudspeaker unit 14.This signal input unit 11 is for receiving the audio signal of the outside input of audio amplifier, and transmits to this digital signal processor 12.
As shown in Figure 2, this digital signal processor 12 is provided with data memory module 124, in this data memory module 124, storage has one group of input processing parameter, this group input processing parameter includes multiple entity DSP data, the kind of entity DSP data does not limit, input processing parameter can comprise the entity DSP data of multiple identical type, it is also possible to comprises different multiple entity DSP data.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 arranged for this active audio amplifier；And at least entity DSP data also include an array layer DSP parameter identical with its audio amplifier layer DSP parameter kind, this array layer DSP parameter is each audio amplifier member for array group belonging to this active audio amplifier and the DSP parameter that arranges, and this array group includes one or more active audio amplifier.
As shown in Figure 2, this digital signal processor 12 also includes input processing module 121, this input processing module 121 includes the sound effect processor of multiple series connection, each sound effect processor respectively with each DSP parameter one_to_one corresponding of this group input processing parameter, each sound effect processor is for carrying out corresponding signal processing operations according to corresponding DSP parameter to audio signal.
This power amplifier unit 13 is for receiving the audio signal processed through this input processing module 121, and transmits to this loudspeaker unit 14 after being amplified this audio signal processing.
In this technique, one DSP parameter is not meant to this DSP parameter only one of which numerical value, one DSP parameter is also likely to be and is made up of multiple (one group the most groups) numerical value, digital signal processor 12 performs corresponding signal processing (audio effect processing) operation according to a DSP parameter, to change the transmission frequency characteristic of audio amplifier.The most here " a DSP parameter ", it can be appreciated that be the one or more data required for certain signal processing operations, such as muting parameter and gain parameter have only to data, and EQ parameter then needs one group of data.In the digital signal processor 12 of this technology, a corresponding sound effect processor of DSP parameter.
Each sound effect processor of input processing module 121 is series connection, and series connection (execution) order of each sound effect processor can be determined by any-mode, it is also possible to is determined by some way.Wherein, the audio signal handled by sound effect processor made number one is directly from signal input unit 11；The follow-up audio signal handled by each sound effect processor processes through previous sound effect processor；Come a last sound effect processor and also need to the audio signal transmission after being processed to power amplifier unit 13.
In this technique, for adjust single active audio amplifier DSP parameter (can be any type of DSP parameter) be referred to as audio amplifier layer DSP parameter, the i.e. data of this audio amplifier layer DSP parameter be this audio amplifier exclusive, with other audio amplifiers share.This active audio amplifier can be adjusted by the audio amplifier layer DSP parameter of amendment active audio amplifier.
And the DSP parameter (being probably any type of DSP parameter) being used for adjusting the audio amplifier member characteristics of array group is referred to as array layer DSP parameter simultaneously, each audio amplifier member of the most same array group shares the data of this array layer DSP parameter.In array group, certain array layer DSP parameter of some audio amplifier member is modified, and the corresponding array layer DSP parameter of remaining audio amplifier member in the most same array group can be also identical numerical value by synchronous vacations.The characteristic of each active audio amplifier belonging to same array group can be adjusted, it is achieved the synchronization control of multiple audio amplifiers by the array layer DSP parameter of amendment active audio amplifier simultaneously.
Audio amplifier layer DSP parameter is relative concept with array layer DSP parameter, in the prior art, only has audio amplifier layer DSP parameter, therefore when system compensation, can only be adjusted by audio amplifier one by one in the input processing parameter of active audio amplifier.And this technology is by arranging the array group DSP parameter of association in each audio amplifier member of array group, if revising the array group DSP parameter of one of them audio amplifier member, the array group DSP parameter that so other audio amplifiers member of this array group is corresponding all can be by synchronous vacations (needing by controlling platform or control system realization), thus realize the adjustment of the synchronization of multiple audio amplifier, simplify difficulty and the complexity of speaker system correction.
Therefore the active audio amplifier of this technology is possible not only to realize the adjustment correction of single audio amplifier, the basic condition that creation is necessary can also be corrected for realizing the synchronization control to multiple audio amplifiers, thus can simplify the adjustment correction work of whole speaker system, it is also possible to ensure Adjustment effect.
The input processing parameter of the present embodiment includes following one or more entity DSP data: input quiet data, input gain data, input time delay data, input reversed polarity data, input air attenuation compensation data, sliced data, EQ data are compressed in input.The most each entity DSP data comprise the audio amplifier layer DSP parameter corresponding with its kind, such as input quiet data comprises audio amplifier layer input muting parameter, input gain packet layer input gain parameter Han audio amplifier, input time delay packet layer input time delay parameter Han audio amplifier, input reversed polarity packet inputs reversed polarity parameter containing audio amplifier layer, input air attenuation compensation packet layer input air attenuation compensation parameter Han audio amplifier, input compression sliced data comprises audio amplifier layer input compression clipping parameter, EQ packet layer EQ parameter Han audio amplifier.At least one of which entity DSP data, in addition to comprising audio amplifier layer DSP parameter, also comprise array layer DSP parameter, say, that part entity DSP data only comprise monolayer parameter, and part entity DSP packet contains multilamellar DSP parameter；Or all DSP data all comprise multilamellar DSP parameter.
The sound effect processor that each DSP parameter of the entity DSP data that input processing module 121 comprises with input processing parameter is comprised of the digital signal processor 12 of the present embodiment is corresponding:
The each input muting parameter comprised for this input quiet data, corresponding sound effect processor is the quiet sound effect processor of input for audio signal carries out silence switch process according to this input muting parameter；
The each input gain parameter comprised for these input gain data, corresponding sound effect processor is the input gain sound effect processor for audio signal carries out input gain process according to this input gain parameter；
The each input time delay parameter comprised for these input time delay data, corresponding sound effect processor is the input time delay sound effect processor for audio signal carries out input time delay process according to this input time delay parameter；
The each input reversed polarity parameter comprised for these input reversed polarity data, corresponding sound effect processor is the input reversed polarity sound effect processor for audio signal carries out reversed polarity operation process according to this input reversed polarity parameter；
The each input air attenuation compensation parameter comprised for these input air attenuation compensation data, corresponding sound effect processor is the input air attenuation compensation sound effect processor for audio signal carries out attenuation of air compensation deals according to this input air attenuation compensation parameter；
The each input compression clipping parameter comprised for this input compression sliced data, corresponding sound effect processor is the input compression amplitude limit sound effect processor for audio signal is compressed amplitude limiting processing according to this input compression clipping parameter；
For each EQ parameter, corresponding sound effect processor is the EQ sound effect processor (EQ sound effect processor can use IIR second order filter) for audio signal is compressed amplitude limiting processing according to this EQ parameter.
The value volume and range of product of the sound effect processor that input processing module 121 is comprised by its value volume and range of product of the actual DSP parameter comprised determined.As shown in Figure 3, assume that input processing parameter specifically includes: input quiet data, input gain data, input time delay data, EQ data, wherein this input quiet data, input gain data, input time delay data the most only comprise audio amplifier layer DSP parameter (only including audio amplifier layer input muting parameter, audio amplifier layer input gain parameter, audio amplifier layer input time delay parameter the most respectively), and these EQ data include audio amplifier layer EQ parameter and array layer EQ parameter.
So input processing module 121 then includes: (1) one for carrying out the quiet sound effect processor of input of silence switch process according to audio amplifier layer input muting parameter to audio signal；(2) one for carrying out the input gain sound effect processor of input gain process according to audio amplifier layer input gain parameter to audio signal；(3) one for carrying out the input time delay sound effect processor of input time delay process according to audio amplifier layer input time delay parameter to audio signal；(4) one for input audio signal being carried out according to the audio amplifier layer EQ parameter of input processing parameter the audio amplifier layer EQ sound effect processor of EQ process, and (5) one for carrying out the array layer EQ sound effect processor of EQ process according to the array layer EQ parameter of input processing parameter to input audio signal.
Additionally, this active audio amplifier also includes microprocessor 15, this microprocessor 15 includes: the DSP for being adjusted each DSP parameter of this group input processing parameter according to external control signal inputs parameter adjustment module.Further, this active audio amplifier also includes the control signal interface being connected with microprocessor 15, and this control signal interface is used for receiving external control signal and transmitting to microprocessor 15.
Embodiment two
The present embodiment is with the difference of embodiment one: the active audio amplifier of the present embodiment is in each entity DSP data that input processing parameter comprises, the entity DSP data including array layer DSP parameter also comprise a system layer DSP parameter identical with its audio amplifier layer DSP parameter kind, this system layer DSP parameter is each audio amplifier member for this active audio amplifier said system group and arranges, and this system group includes one or more active audio amplifier.
Each audio amplifier member being referred to as system layer DSP parameter, i.e. same system group for adjusting the DSP parameter (being probably any type of DSP parameter) of the audio amplifier member characteristics of system group simultaneously shares the data of this system layer DSP parameter.In system group, certain system layer DSP parameter of some audio amplifier member is modified, then the correspondence system layer DSP parameter of remaining audio amplifier member in same system group can be also identical numerical value by synchronous vacations.The characteristic of each active audio amplifier belonging to same system group can be adjusted, it is achieved the synchronization control of multiple audio amplifiers by the system layer DSP parameter of amendment active audio amplifier simultaneously.
Speaker system is being carried out system debug timing, in addition to needing to debug the audio of each audio amplifier, also need to debug the audio of each audio amplifier group, and the audio of speaker total system, prior art either debugs audio amplifier, audio amplifier group or whole system, all could be adjusted to realize by audio amplifier one by one.This technology arranges array layer DSP parameter in active audio amplifier, although can realize the synchronization control of multiple audio amplifier, simplifies the debugging correction work of audio amplifier group, ensures the debugging effect of audio amplifier group, but can't be adjusted the audio that speaker system is overall.To this end, this technology sets up system layer DSP parameter further in the input processing parameter in active audio amplifier, then can simplified system is overall further debugging efforts, further ensure that the audio that speaker system is overall.
As shown in Figure 4, assume that input processing parameter specifically includes: input quiet data, input gain data, input time delay data, EQ data, wherein this input quiet data, input gain data, input time delay data the most only comprise audio amplifier layer DSP parameter (only including audio amplifier layer input muting parameter, audio amplifier layer input gain parameter, audio amplifier layer input time delay parameter the most respectively), and these EQ data include audio amplifier layer EQ parameter, array layer EQ parameter and system layer EQ parameter.
So input processing module then includes: (1) one for carrying out the quiet sound effect processor of input of silence switch process according to audio amplifier layer input muting parameter to audio signal；(2) one for carrying out the input gain sound effect processor of input gain process according to audio amplifier layer input gain parameter to audio signal；(3) one for carrying out the input time delay sound effect processor of input time delay process according to audio amplifier layer input time delay parameter to audio signal；(4) one for carrying out the audio amplifier layer EQ sound effect processor of EQ process according to the audio amplifier layer EQ parameter of input processing parameter to input audio signal；(5) one for carrying out the array layer EQ sound effect processor of EQ process according to the array layer EQ parameter of input processing parameter to input audio signal；And (6) array layer EQ sound effect processors being used for audio signal carries out EQ process according to this array layer EQ parameter.
Embodiment three
The present embodiment is with the difference of embodiment one: the active audio amplifier of the present embodiment is in the entity DSP data that input processing parameter comprises, at least entity DSP data also comprise a system layer DSP parameter identical with its audio amplifier layer DSP parameter kind, this system layer DSP parameter is each audio amplifier member for this active audio amplifier said system group and arranges, and this system group includes one or more active audio amplifier.
Embodiment four
The present embodiment is a kind of speaker system calibration method, this speaker system includes multiple active audio amplifier, this speaker system is provided with one or more array group, and/or one or more system group, each array group includes that one or more active audio amplifier, each system group include one or more active audio amplifier.This active audio amplifier is the active audio amplifier described in embodiment two or embodiment three.As it is shown in figure 5, the speaker system calibration method of the present embodiment comprises the following steps:
Step S10: start；
Step S20: if selecting the audio amplifier layer DSP parameter of amendment input processing parameter, then perform step S21；If selecting the array layer DSP parameter of amendment input processing parameter, then perform step S22；If selecting the system layer DSP parameter of amendment input processing parameter, then perform step S23；
Step S21: the audio amplifier layer DSP parameter that amendment is selected, and amended data are preserved to the active audio amplifier belonging to this audio amplifier layer DSP parameter；Perform step S20 or step S30；(this step S realizes the adjustment to single audio amplifier)
Step S22: the array layer DSP parameter that amendment is selected, if the active audio amplifier belonging to this array layer DSP parameter is not belonging to the audio amplifier member of (any one) array group, then amended data will preserve to the respective array layer DSP parameter of this active audio amplifier；If the audio amplifier member of the active audio amplifier belonging to this array layer DSP parameter and some array group, then amended data will preserve to array layer DSP parameter corresponding to this array group each audio amplifier member respectively；Perform step S20 or step S30；(synchronization control of this step realization audio amplifiers multiple to audio amplifier group)
Step S23: the system layer DSP parameter that amendment is selected, if this active audio amplifier belonging to system layer DSP parameter is not belonging to the audio amplifier member of (any one) system group, then amended data will preserve to the corresponding system layer DSP parameter of this active audio amplifier；If the audio amplifier member of this active audio amplifier belonging to system layer DSP parameter and some system group, then amended data will preserve to system layer DSP parameter corresponding to this system group each audio amplifier member respectively；Perform step S20 or step S30；(synchronization control of this step realization audio amplifiers multiple to system group)
Step S30: terminate.
Embodiment five
The present embodiment is a kind of speaker system calibration method, and this speaker system includes multiple active audio amplifier, and this speaker system is provided with one or more array group, and each array group includes one or more active audio amplifier.This active audio amplifier is the active audio amplifier described in embodiment one.As shown in Figure 6, the speaker system calibration method of the present embodiment comprises the following steps:
Step S10: start；
Step S20: if selecting the audio amplifier layer DSP parameter of amendment input processing parameter, then perform step S21；If selecting the array layer DSP parameter of amendment input processing parameter, then perform step S22；
Step S21: the audio amplifier layer DSP parameter that amendment is selected, and amended data are preserved to the active audio amplifier belonging to this audio amplifier layer DSP parameter；Perform step S20 or step S30；(this step S realizes the adjustment to single audio amplifier)
Step S22: the array layer DSP parameter that amendment is selected, if the active audio amplifier belonging to this array layer DSP parameter is not belonging to the audio amplifier member of (any one) array group, then amended data will preserve to the respective array layer DSP parameter of this active audio amplifier；If the audio amplifier member of the active audio amplifier belonging to this array layer DSP parameter and some array group, then amended data will preserve to array layer DSP parameter corresponding to this array group each audio amplifier member respectively；Perform step S20 or step S30；(synchronization control of this step realization audio amplifiers multiple to audio amplifier group)
Step S30: terminate.
Claims (9)
1. an active audio amplifier, it is characterised in that: this active audio amplifier includes at signal input unit, digital signal
Reason device, power amplifier unit and loudspeaker unit, this signal input unit is for receiving the audio frequency of the outside input of audio amplifier
Signal, and transmit to this digital signal processor；
This digital signal processor is provided with data memory module, and in this data memory module, storage has one group of input
Processing parameter, this group input processing parameter includes that multiple entity DSP data, each entity DSP packet contain
There are an audio amplifier layer DSP parameter corresponding with the kind of this entity DSP data, this audio amplifier layer DSP parameter
It it is the DSP parameter arranged for this active audio amplifier；And at least entity DSP data also include one
The array layer DSP parameter identical with its audio amplifier layer DSP parameter kind, this array layer DSP parameter be for
Each audio amplifier member of array group belonging to this active audio amplifier and the DSP parameter that arranges, this array group includes one
Or multiple active audio amplifier；
This digital signal processor also includes input processing module, and this input processing module includes multiple series connection
Sound effect processor, each sound effect processor respectively with each DSP parameter one a pair of this group input processing parameter
Should, each sound effect processor is for carrying out corresponding signal processing according to corresponding DSP parameter to audio signal
Operation；
This power amplifier unit is for receiving the audio signal processed through this input processing module, and is believed by this audio frequency
Transmit to this loudspeaker unit after number being amplified processing.
Active audio amplifier the most according to claim 1, it is characterised in that: comprise in described input processing parameter
Entity DSP data in, described in include the entity DSP data of array layer DSP parameter and also comprise one
The system layer DSP parameter identical with its audio amplifier layer DSP parameter kind, this system layer DSP parameter be for
Each audio amplifier member of this active audio amplifier said system group and arrange, this system group includes one or more having
Source audio amplifier.
Active audio amplifier the most according to claim 1, it is characterised in that: comprise in described input processing parameter
Entity DSP data in, at least entity DSP data also comprise one with its audio amplifier layer DSP parameter
The system layer DSP parameter that kind is identical, this system layer DSP parameter is for this active audio amplifier said system group
Each audio amplifier member and arrange, this system group includes one or more active audio amplifier.
4. according to the arbitrary described active audio amplifier of claims 1 to 3, it is characterised in that: described input processing is joined
Number includes following one or more entity DSP data: input quiet data, input gain data, input
Delay data, inputs reversed polarity data, input air attenuation compensation data, input compression sliced data, EQ
Data；Described EQ packet layer EQ parameter Han audio amplifier；
The input processing module of described digital signal processor comprises the reality comprised with described input processing parameter
The sound effect processor that each DSP parameter of body DSP data is corresponding:
Each input muting parameter that this input quiet data is comprised, corresponding sound effect processor
For the quiet audio effect processing of input for audio signal being carried out according to this input muting parameter silence switch process
Device；
Each input gain parameter that these input gain data are comprised, corresponding sound effect processor
For the input gain audio effect processing for audio signal being carried out according to this input gain parameter input gain process
Device；
Each input time delay parameter that these input time delay data are comprised, corresponding sound effect processor
For the input time delay audio effect processing for audio signal being carried out according to this input time delay parameter input time delay process
Device；
The each input reversed polarity parameter comprised for these input reversed polarity data, at corresponding audio
Reason device is the input antipole for audio signal carries out reversed polarity operation process according to this input reversed polarity parameter
Property sound effect processor；
The each input air attenuation compensation parameter comprised for these input air attenuation compensation data, with it
Corresponding sound effect processor is to be used for, according to this input air attenuation compensation parameter, audio signal is carried out air to decline
Subtract the input air attenuation compensation sound effect processor of compensation deals；
Each input compression clipping parameter that this input compression sliced data is comprised, corresponding sound
Effect processor is the input for audio signal is compressed amplitude limiting processing according to this input compression clipping parameter
Compression amplitude limit sound effect processor；
For each EQ parameter, corresponding sound effect processor is for for believing audio frequency according to this EQ parameter
Number it is compressed the EQ sound effect processor of amplitude limiting processing.
Active audio amplifier the most according to claim 1, it is characterised in that: described input processing parameter includes defeated
Enter quiet data, input gain data, input time delay data, EQ data, wherein this input quiet data,
Input gain data, input time delay data the most only comprise audio amplifier layer DSP parameter, and these EQ data include sound
Case layer EQ parameter and array layer EQ parameter, described input processing module includes: for quiet according to this input
Parameter carries out the quiet sound effect processor of input of silence switch process to audio signal；For increasing according to this input
Benefit parameter carries out the input gain sound effect processor of input gain process to audio signal；For according to this input
Delay parameter carries out the input time delay sound effect processor of input time delay process to audio signal；For according to described
The audio amplifier layer EQ parameter of input processing parameter carries out the audio amplifier layer EQ audio of EQ process to input audio signal
Processor, and for input audio signal being entered according to the array layer EQ parameter of described input processing parameter
The array layer EQ sound effect processor that row EQ processes.
Active audio amplifier the most according to claim 2, it is characterised in that: described input processing parameter includes defeated
Enter quiet data, input gain data, input time delay data, EQ data, wherein this input quiet data,
Input gain data, input time delay data the most only comprise audio amplifier layer DSP parameter, and these EQ data include sound
Case layer EQ parameter, array layer EQ parameter and system layer EQ parameter, described input processing module includes: one
The individual quiet audio of input for audio signal being carried out according to audio amplifier layer input muting parameter silence switch process
Processor；One for carrying out the defeated of input gain process according to audio amplifier layer input gain parameter to audio signal
Enter gain sound effect processor；One is used for, according to audio amplifier layer input time delay parameter, audio signal is carried out input and prolongs
Time process input time delay sound effect processor；One for the audio amplifier layer EQ parameter according to input processing parameter
Input audio signal is carried out the audio amplifier layer EQ sound effect processor of EQ process, and one is used for according to input
The array layer EQ parameter of processing parameter carries out the array layer EQ audio effect processing of EQ process to input audio signal
Device.
7. according to the active audio amplifier described in claims 1 to 3,5,6 any one, it is characterised in that: this is active
Audio amplifier also includes microprocessor, and this microprocessor includes: be used for according to external control signal this group input
The DSP that each DSP parameter of reason parameter is adjusted inputs parameter adjustment module.
Active audio amplifier the most according to claim 7, it is characterised in that: this active audio amplifier also includes with described
The control signal interface that microprocessor connects, this control signal interface is used for receiving external control signal and transmitting
To described microprocessor.
9. a speaker system calibration method, it is characterised in that: this speaker system include multiple as right want
Seeking 1 to 8 arbitrary described active audio amplifier, this speaker system is provided with one or more array group, and/or one
Individual or multiple system groups, this bearing calibration comprises the following steps:
Step S10: start；
Step S20: if selecting the audio amplifier layer DSP parameter of amendment input processing parameter, then perform step S21；
If selecting the array layer DSP parameter of amendment input processing parameter, then perform step S22；If selecting amendment defeated
Enter the system layer DSP parameter of processing parameter, then perform step S23；
Step S21: the audio amplifier layer DSP parameter that amendment is selected, and amended data are preserved to this audio amplifier
Layer active audio amplifier belonging to DSP parameter；Perform step S20 or step S30；
Step S22: the array layer DSP parameter that amendment is selected, if active belonging to this array layer DSP parameter
Audio amplifier is not belonging to the audio amplifier member of array group, then amended data are corresponding by preservation to this active audio amplifier
In array layer DSP parameter；If the active audio amplifier belonging to this array layer DSP parameter and the sound of some array group
Case member, then amended data will preserve respectively to battle array corresponding to this array group each audio amplifier member
In row layer DSP parameter；Perform step S20 or step S30；
Step S23: the system layer DSP parameter that amendment is selected, if active belonging to this system layer DSP parameter
Audio amplifier is not belonging to the audio amplifier member of system group, then amended data are corresponding by preservation to this active audio amplifier
In system layer DSP parameter；If this active audio amplifier belonging to system layer DSP parameter and the sound of some system group
Case member, then amended data by preserve respectively to this system group each audio amplifier member corresponding be
In system layer DSP parameter；Perform step S20 or step S30；
Step S30: terminate.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101179874A (en) * | 2007-12-12 | 2008-05-14 | 苏州天越视听科技有限公司 | Acoustics system capable of performing description and correction to sound box parameter |
| CN102202252A (en) * | 2011-05-06 | 2011-09-28 | 广州励丰声光科技有限公司 | Intelligent management system of active loudspeakers |
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| US9224395B2 (en) * | 2008-07-02 | 2015-12-29 | Franklin S. Felber | Voice detection for automatic volume controls and voice sensors |
| JP2010154110A (en) * | 2008-12-24 | 2010-07-08 | Yamaha Corp | Shading coefficient operation device of speaker array, speaker array incorporating the shading coefficient operation device, and program |
| JP2012015715A (en) * | 2010-06-30 | 2012-01-19 | Nec Corp | Echo determination system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101179874A (en) * | 2007-12-12 | 2008-05-14 | 苏州天越视听科技有限公司 | Acoustics system capable of performing description and correction to sound box parameter |
| CN102202252A (en) * | 2011-05-06 | 2011-09-28 | 广州励丰声光科技有限公司 | Intelligent management system of active loudspeakers |
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