CN104581498B - The method and system of simulated target audio amplifier playback effect - Google Patents
The method and system of simulated target audio amplifier playback effect Download PDFInfo
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- CN104581498B CN104581498B CN201310500016.4A CN201310500016A CN104581498B CN 104581498 B CN104581498 B CN 104581498B CN 201310500016 A CN201310500016 A CN 201310500016A CN 104581498 B CN104581498 B CN 104581498B
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Abstract
The present invention provides a kind of method and system of simulated target audio amplifier playback effect.The method according to the invention, first, recorded in the reference audio signal that multiple location points are each played to target audio amplifier and source audio amplifier respectively, to obtain multiple target recorded audio signals and multiple source recorded audio signals；Then, the first merging signal is merged into after multiple target recorded audio signals are alignd, and the second merging signal is merged into after multiple source recorded audio signals are alignd；Then, described first merging signal fitting is merged into signal to obtain the first fitting operator for second, and operator is fitted to determine the parameter of wave filter to build the wave filter being connected with the source audio amplifier based on described first, thus it can realize that the playback effect of common audio amplifier sounds, as the playback effect of high-quality audio amplifier, effectively being lifted the competitiveness of common audio amplifier.
Description
Technical field
The present invention relates to audio area, more particularly to a kind of method and system of simulated target audio amplifier playback effect.
Background technology
Terminal of the audio amplifier as whole sound system, its effect is radiated after audio electric energy is converted into corresponding acoustic energy
Space, so that human ear is listened to.The species of audio amplifier is various, according to different classifications mode, audio amplifier can be divided into all kinds：Such as：
1) according to use occasion；Professional sound box and the major class of domestic loudspeaker box two can be divided into；Wherein, domestic loudspeaker box is generally used for house
Front yard playback, it is characterized in that playback matter exquisiteness is soft, external form is more exquisite, attractive in appearance, and playback sound pressure level is less high, the power phase born
To less；And Professional sound box is generally used for the professional entertainment place such as dancing hall, Karaoke, cinema, hall and stadiums；
2) according to playback frequency：Whole frequency band audio amplifier, woofer and super-bass loudspeaker box can be divided into, wherein, Whole frequency band audio amplifier
Refer to the sound equipment that can cover low frequency, intermediate frequency and high-frequency range playback.The lower frequency limit of Whole frequency band audio amplifier is generally 30Hz-60Hz,
Upper limiting frequency is 15KHz-20KHz, and woofer and super-bass loudspeaker box are usually to be used for supplementing the low frequency of Whole frequency band audio amplifier and surpass
The loudspeaker special of low frequency playback；
3) according to purposes：Main playback audio amplifier, monitor speaker can be divided into and returned and listen audio amplifier etc., wherein, main playback audio amplifier is general
Main force's audio amplifier as sound system, undertake main playback task；Monitor speaker, which is used for control room, recording studio makees program monitoring makes
With, it has, and distortion is small, frequency response is wide and straight, the characteristic such as seldom modifies signal, returns and listens audio amplifier to be also known as stage monitor speaker, and one
As be used in stage or dancing hall and monitored for performer or band member and oneself sing or play sound；
4) body structure is pressed：Sealed audio amplifier, phase inverted cabinet, labyrinth type audio amplifier, sound wave tubular type audio amplifier and more can be divided into
Chamber resonant speaker system etc.；
5) loudspeaker unit quantity is pressed：2.0 audio amplifiers, 2.1 audio amplifiers, 5.1 audio amplifiers etc. can be divided into；
6) casing material is pressed：Wooden acoustic box, plastic loudspeaker box, metal material audio amplifier etc. can be divided into.
Although many for the audio amplifier of user's selection in the market, the audio amplifier with high-quality playback effect often hold high by price
It is expensive, therefore, the playback effect of common audio amplifier is also reached or close to high-quality audio amplifier, to meet the need of users
Ask, it has also become those skilled in the art's focus of attention.
The content of the invention
In view of the above the shortcomings that prior art, it is an object of the invention to provide a kind of target audio amplifier playback effect
Method and system, to realize the playback effect of common audio amplifier close to the playback effect of high-quality audio amplifier.
In order to achieve the above objects and other related objects, the present invention provides a kind of side of simulated target audio amplifier playback effect
Method, it is comprised at least：
1) the reference audio signal each played to target audio amplifier and source audio amplifier respectively in multiple location points is recorded,
To obtain multiple target recorded audio signals and multiple source recorded audio signals；
2) the first merging signal is merged into after multiple target recorded audio signals are alignd, and by after the alignment of multiple source recorded audio signals
Merge into the second merging signal；
3) the described first merging signal fitting is merged into signal to obtain the first fitting operator for second；
4) parameter of wave filter is determined to build the filter being connected with the source audio amplifier based on the described first fitting operator
Ripple device.
Preferably, by described first fitting operator zero pole point to bring determine wave filter parameter so as to build with it is described
The wave filter of source audio amplifier connection；It is further preferable that when described first fitting operator the zero point outside unit circle be present when, then by this zero
The inverse of point is as limit.
Preferably, when the described first merging signal can not be fitted to the second merging signal, methods described also includes step：
The reference audio signal fitting is merged into signal to obtain the second fitting operator for first, and the reference audio signal is intended
The second merging signal is combined into obtain the 3rd fitting operator；The step 4) is changed to：Based on the described second fitting operator and the
Three are fitted operators to determine the parameter of wave filter to build the wave filter being connected with the source audio amplifier.
Preferably, will be multiplied after the zero pole point exchange of the described 3rd fitting operator with the described second fitting operator to determine to filter
The parameter of ripple device is to build the wave filter being connected with the source audio amplifier；It is further preferable that when the described 3rd fitting operator is present
During zero point outside unit circle, then using the inverse of the zero point as limit.
Preferably, the step 2) also includes：Using one of each target recorded audio signals as reference signal, and will be multiple
After target recorded audio signals carry out High frequency filter respectively, the benchmark is used as using the data catastrophe point in the reference signal after High frequency filter
The sound head of signal, again with the respective data catastrophe point of each of the target recorded audio signals after remaining High frequency filter, with each
Each in the adjacent multiple data of data catastrophe point to carry out with reference signal respectively respectively as the sound head of respective signal
Fitting, and realize pair of each target recorded audio signals using the sound head position of error of fitting reckling as the sound head of respective signal
Together；And multiple source recorded audio signals handle to realize pair of each source recorded audio signals with multiple target recorded audio signals identicals
Together.
The present invention also provides a kind of system of simulated target audio amplifier playback effect, and it is comprised at least：
Recording module, for distinguishing the reference audio signal that target audio amplifier and source audio amplifier each played in multiple location points
Recorded, to obtain multiple target recorded audio signals and multiple source recorded audio signals；
Merging module, for merging into the first merging signal after multiple target recorded audio signals are alignd, and multiple sources are recorded
The second merging signal is merged into after sound signal alignment；
Fitting module, for described first merging signal fitting to be merged into signal to obtain the first fitting operator for second；
Parameter determination module, for based on described first fitting operator come determine the parameter of wave filter so as to build with it is described
The wave filter of source audio amplifier connection.
Preferably, when the described first merging signal can not be fitted to the second merging signal, then the fitting module is also used
In by the reference audio signal fitting be the first merging signal to obtain the second fitting operator, and by the reference audio signal
The second merging signal is fitted to obtain the 3rd fitting operator；The parameter determination module is additionally operable to calculate based on the described second fitting
Son and the 3rd fitting operator determine the parameter of wave filter to build the wave filter being connected with the source audio amplifier.
Preferably, the parameter determination module includes：Inversion unit, the zero pole point for being fitted operator are exchanged；It is more excellent
Selection of land, the exchange unit also include：Computing unit, for when be fitted operator the zero point outside unit circle be present when, then by this zero
The inverse of point is as limit.
Preferably, the merging module also includes：Alignment unit, for being believed using one of each recorded audio signals as benchmark
Number, and after multiple recorded audio signals are carried out into High frequency filter respectively, then with the data catastrophe point in the reference signal after High frequency filter
Sound head as the reference signal, with the respective data catastrophe point of each of the target recorded audio signals after remaining High frequency filter,
Each in multiple data adjacent with respective data catastrophe point with benchmark is believed respectively respectively as the sound head of respective signal
Number it is fitted, and pair of each recorded audio signals is realized using the sound head position of error of fitting reckling as the sound head of respective signal
Together.
As described above, the method and system of the simulated target audio amplifier playback effect of the present invention, have the advantages that：Energy
The playback effect of common audio amplifier is set to sound, as the playback effect of high-quality audio amplifier, effectively being lifted the competitiveness of common audio amplifier.
Brief description of the drawings
Fig. 1 is shown as the flow chart of the method for the simulated target audio amplifier playback effect of the present invention.
Fig. 2 a are shown as the recorded audio signals schematic diagram of 6 diverse locations of collection.
Fig. 2 b are shown as obtaining recorded audio signals schematic diagram after 6 recorded audio signals shown in Fig. 2 a are alignd and merged.
Fig. 3 is shown as another preferred flow charts of method of the simulated target audio amplifier playback effect of the present invention.
Fig. 4 is shown as the system schematic of the simulated target audio amplifier playback effect of the present invention.
Fig. 5 is shown with the playback effect schematic diagram for the source audio amplifier that the present invention is simulated.
Component label instructions
1 simulation system
11 recording modules
12 merging modules
13 fitting modules
14 parameter determination modules
S1~S4, S3 ', S4 ' steps
Embodiment
Illustrate embodiments of the present invention below by way of specific instantiation, those skilled in the art can be by this specification
Disclosed content understands other advantages and effect of the present invention easily.The present invention can also pass through specific realities different in addition
The mode of applying is embodied or practiced, the various details in this specification can also be based on different viewpoints with application, without departing from
Various modifications or alterations are carried out under the spirit of the present invention.
Fig. 1 is referred to Fig. 5.It should be noted that the diagram provided in the present embodiment only illustrates this in a schematic way
The basic conception of invention, the component relevant with the present invention is only shown in schema then rather than according to package count during actual implement
Mesh, shape and size are drawn, and kenel, quantity and the ratio of each component can be a kind of random change during its actual implementation, and its
Assembly layout kenel may also be increasingly complex.
As shown in figure 1, the present invention provides a kind of method of simulated target audio amplifier playback effect.Wherein, according to the present invention's
Method is mainly completed by the simulation system in computer equipment, and the simulation system includes but is not limited to set installed in computer
In standby and system that the present invention program can be realized.
In step sl, the simulation system is each played to target audio amplifier and source audio amplifier respectively in multiple location points
Reference audio signal is recorded, to obtain multiple target recorded audio signals and multiple source recorded audio signals.
Wherein, the reference audio signal can use any audio signal, it is preferable that include but is not limited to：Powder is made an uproar.
Wherein, the target audio amplifier can be any audio amplifier, it is preferable that including but not limited to be imitated with high-quality playback
The audio amplifier of fruit；The source audio amplifier is preferably then common audio amplifier.
Specifically, when target audio amplifier is in a certain space, for example, room A, when playing reference audio signal, in room, A is not
Same position, for example, a points, b points, c points etc., the simulation system is respectively adopted the devices such as miaow head, analog-digital converter and recorded simultaneously
Sampling, to obtain the target recorded audio signals of multiple diverse location points；Then, when source target is in the same space, for example, room A, broadcasts
When putting same reference audio signal, the simulation system equally in positions such as room A a points, b points, c points, be respectively adopted miaow head,
The devices such as analog-digital converter are recorded and sampled, to obtain the former recorded audio signals of multiple diverse location points.
Then, in step s 2, the simulation system merges into the first merging letter after multiple target recorded audio signals are alignd
Number, and merge into the second merging signal after multiple source recorded audio signals are alignd.
Wherein, a kind of mode that preferably multiple recorded audio signals align is as follows：
First, one of each recorded audio signals of the simulation system are used as reference signal, and multiple recorded audio signals are distinguished
High frequency filter is carried out, then using the data catastrophe point in filtered reference signal as the sound head of the reference signal, again with high frequency
The respective data catastrophe point of each of remaining filtered recorded audio signals, the multiple data adjacent with respective data catastrophe point
In each be fitted respectively with reference signal respectively as the sound head of respective signal, each with error of fitting reckling
Sound head of the sound head position as respective signal, thus can realize the alignment of each recorded audio signals.
Wherein, the High frequency filter can use any one to filter out flip-flop and make the more prominent filter of radio-frequency component
Ripple device carried out, it is preferable that -3db points can be used to be carried out for 4000hz single order low-cut filter.
For example, the simulation system is using the target recorded audio signals Xa of a points position as reference signal, then by target recording letter
After the target recorded audio signals Xc of target recorded audio signals Xb, c point position of number Xa, b point position carries out High frequency filter respectively, then and with
Sound heads of the data catastrophe point Ta1 in target recorded audio signals Xa as target recorded audio signals Xa after High frequency filter, then with high frequency
The previous data point of data catastrophe point Tb1, data catastrophe point Tb1 in filtered target recorded audio signals Xb, data mutation
Point Tb1 the latter data point, data catastrophe point Tb1 the first two data point, data catastrophe point Tb1 latter two data
Point ... data catastrophe point Tb1 top n data point, data catastrophe point Tb1 rear N number of data point are recorded respectively as target
Signal Xb sound head, to be fitted with reference signal, that is, target recorded audio signals Xa respectively, if error of fitting reckling is
Target recorded audio signals Xb using data catastrophe point Tb1 the first two data point as sound head, the then number in target recorded audio signals Xb
It is right according to catastrophe point Tb1 the first two data point (i.e. sound head) and the data catastrophe point Ta1 (i.e. sound head) in target recorded audio signals Xa
Qi Hou, then the target recorded audio signals Xb alignd with target recorded audio signals Xa；Preceding aim record is also carried out to target recorded audio signals Xc
Sound signal Xb identicals processing, so that it may realize that the target recorded audio signals Xc aligns with target recorded audio signals Xa, so as to 3 targets
Recorded audio signals Xa, Xb and Xc realize the alignment of signal.
Wherein, N is the integer more than 1, it is preferable that it can be between 150 to 250.
Equally, in the way of above-mentioned multiple target recorded audio signals alignment, the simulation system can be realized records to multiple sources
The alignment of sound signal.
Then, the simulation system merges to the recorded audio signals after alignment again, can effectively avoid inclined in time domain
Shifting causes caused phase cancellation distortion after superposition, so as to obtain more satisfactory test number.
Fig. 2 a and 2b are referred to, the simulation system merges after 6 recorded audio signals shown in Fig. 2 a are alignd, the conjunction of acquisition
And audio signal is as shown in Figure 2 b.
Wherein, the simulation system can use any fit approach that can be fitted signal, it is preferable that including but not
It is limited to：It is fitted based on least-mean-square-error criterion, is described in detail after appearance.
Then, in step s3, the described first merging signal fitting is merged signal to obtain by the simulation system for second
Obtain the first fitting operator.
Wherein, the simulation system can use any fitting side that can be by the first merging signal fitting for the second merging signal
Formula, it is preferable that include but is not limited to：It is fitted based on least-mean-square-error criterion.
For example, the first merging signal is the signal sequence X that total length is NN, the second merging signal be letter that total length is N
Number sequence YN, then the simulation system be based on least-mean-square-error criterion, i.e.,：mixE(FXN-YN) determine a in function F0、
a1、……an、b0、b1、……bm, and a will be determined0、a1、……an、b0、b1、……bmFunction F as first fitting calculate
Son, wherein,
Then, in step s 4, the simulation system based on described first fitting operator come determine the parameter of wave filter with
Just the wave filter being connected with the source audio amplifier is built.
Specifically, the simulation system is to the first fitting operator by inverting to determine the parameter of wave filter, and by really
Fixed parameter is supplied to the system for being connected with the source audio amplifier, so that this is connected with the system of the source audio amplifier according to the simulation
The parameter that system is provided builds wave filter, so that the playback effect of the source audio amplifier can be similar to target audio amplifier.
For example, the zero pole point of the first fitting operator is determined the parameter of wave filter to build by the simulation system to bringing
The wave filter being connected with the source audio amplifier；If the zero point outside unit circle be present in the first fitting operator, the simulation system
System is using the inverse of the zero point as limit.
As shown in figure 3, its method flow diagram for the another kind preferably simulated target audio amplifier playback effect of the present invention.This reality
Applying example includes step S1, S2, S3 ' and S4 ', wherein, step S1, S2 is described in detail in the embodiment shown in fig. 1, and to draw
Mode is incorporated herein, and is no longer repeated herein.
In step S3 ', when the described first merging signal can not be fitted to the second merging signal, the simulation system will
The reference audio signal fitting be the first merging signal to obtain the second fitting operator, and by the reference audio signal fitting
For the second merging signal operator is fitted to obtain the 3rd.
Specifically, the simulation system is big for the Minimum Mean Square Error after the second merging signal based on the first merging signal fitting
In more than the 60% of the mean square deviation that first merges signal, then confirm that the first merging signal can not be fitted to the second merging letter
Number, that is,：
mixE(FXN-YN)>0.6E(XN), wherein, signal sequence XNMerge signal, signal sequence Y for firstNClosed for second
And signal, N are the total length of signal sequence.
Wherein, reference audio signal fitting is merged the fit approach of signal for first, will refer to sound by the simulation system
Frequency signal fitting is that the fit approach of the second merging signal with merging signal fitting by first in abovementioned steps S3 is the second merging
The fit approach of signal is same or similar, and is incorporated herein by reference, no longer repeats.
Then, in step S4 ', the simulation system is determined based on the described second fitting operator and the 3rd fitting operator
The parameter of wave filter configures so as to pair wave filter being connected with the source audio amplifier.
Specifically, it is multiplied to come really with the described second fitting operator after the simulation system inverts the described 3rd fitting operator
The parameter of wave filter is determined to build the wave filter being connected with the source audio amplifier.
Wherein, the simulation system is inverted to the mode that the described 3rd fitting operator is inverted with foregoing to the first fitting operator
Mode it is same or similar, and be incorporated herein, no longer repeat by reference.
As shown in figure 4, the present invention provides a kind of system of simulated target audio amplifier playback effect.Wherein, the simulation system 1 is wrapped
Include：Recording module 11, merging module 12, fitting module 13 and parameter determination module 14.
The reference audio that the recording module 11 is each played to target audio amplifier and source audio amplifier respectively in multiple location points
Signal is recorded, to obtain multiple target recorded audio signals and multiple source recorded audio signals.
Wherein, the reference audio signal can use any audio signal, it is preferable that include but is not limited to：Powder is made an uproar.
Wherein, the target audio amplifier can be any audio amplifier, it is preferable that including but not limited to be imitated with high-quality playback
The audio amplifier of fruit；The source audio amplifier is preferably then common audio amplifier.
Specifically, when target audio amplifier is in a certain space, for example, room A, when playing reference audio signal, in room, A is not
Same position, for example, a points, b points, c points etc., the recording module 11 is respectively adopted the devices such as miaow head, analog-digital converter and recorded
And sample, to obtain the target recorded audio signals of multiple diverse location points；Then, when source target is in the same space, for example, room A,
When playing same reference audio signal, the recording module 11 equally in positions such as room A a points, b points, c points, is respectively adopted
The devices such as miaow head, analog-digital converter are recorded and sampled, to obtain the former recorded audio signals of multiple diverse location points.
Then, the merging module 12 merges into the first merging signal after multiple target recorded audio signals are alignd, and will be more
The second merging signal is merged into after individual source recorded audio signals alignment.
Preferably, the merging module 12 includes：Alignment unit.
The alignment unit is carried out multiple recorded audio signals using one of each recorded audio signals as reference signal respectively
After High frequency filter, using the data catastrophe point in the reference signal after High frequency filter as the sound head of the reference signal, again with high frequency
The respective data catastrophe point of each of remaining filtered recorded audio signals, the multiple data adjacent with respective data catastrophe point
In each be fitted respectively with reference signal respectively as the sound head of respective signal, then each with error of fitting most
Sound head of the sound head position of small person as respective signal, thus can realize the alignment of each recorded audio signals.
Wherein, the High frequency filter can use any one to filter out flip-flop and make the more prominent filter of radio-frequency component
Ripple device carried out, it is preferable that -3db points can be used to be carried out for 4000hz single order low-cut filter.
For example, the alignment unit is using the target recorded audio signals Xa of a points position as reference signal, and by target recording letter
After the target recorded audio signals Xc of target recorded audio signals Xb, c point position of number Xa, b point position carries out High frequency filter respectively, then and with
Sound heads of the data catastrophe point Ta1 in target recorded audio signals Xa as target recorded audio signals Xa after High frequency filter, then with high frequency
The previous data point of data catastrophe point Tb1, data catastrophe point Tb1 in filtered target recorded audio signals Xb, data mutation
Point Tb1 the latter data point, data catastrophe point Tb1 the first two data point, data catastrophe point Tb1 latter two data
Point ... data catastrophe point Tb1 top n data point, data catastrophe point Tb1 rear N number of data point are recorded respectively as target
Signal Xb sound head, to be fitted with reference signal, that is, target recorded audio signals Xa respectively, if error of fitting reckling is
Target recorded audio signals Xb using data catastrophe point Tb1 the first two data point as sound head, the then number in target recorded audio signals Xb
It is right according to catastrophe point Tb1 the first two data point (i.e. sound head) and the data catastrophe point Ta1 (i.e. sound head) in target recorded audio signals Xa
Qi Hou, then the target recorded audio signals Xb alignd with target recorded audio signals Xa；The alignment unit is also entered to target recorded audio signals Xc
The processing of row preceding aim recorded audio signals Xb identicals, so that it may realize that the target recorded audio signals Xc aligns with target recorded audio signals Xa,
So as to which 3 target recorded audio signals Xa, Xb and Xc realize the alignment of signal.
Wherein, N is the integer more than 1, it is preferable that it can be between 150 to 250.
Equally, in the way of above-mentioned multiple target recorded audio signals alignment, the alignment unit can be realized records to multiple sources
The alignment of sound signal.
Then, the merging module 12 merges to the recorded audio signals after alignment again, effectively can avoid in time domain
Skew causes caused phase cancellation distortion after superposition, so as to obtain more satisfactory test number.
Wherein, the alignment unit can use any fit approach that can be fitted signal, it is preferable that including but not
It is limited to：It is fitted based on least-mean-square-error criterion, is described in detail after appearance.
Fig. 2 a and 2b are referred to, the merging module 12 merges after 6 recorded audio signals shown in Fig. 2 a are alignd, acquisition
Combined audio signal is as shown in Figure 2 b.
Then, the described first merging signal fitting is merged signal to obtain the first fitting by the fitting module 13 for second
Operator.
Wherein, the fitting module 13 can use any fitting that can be by the first merging signal fitting for the second merging signal
Mode, it is preferable that include but is not limited to：Least-mean-square-error criterion is fitted.
For example, the first merging signal is the signal sequence X that total length is NN, the second merging signal be letter that total length is N
Number sequence YN, then the fitting module 13 be based on mixE (FXN-YN) determine a in function F0、a1、……an、b0、b1、……
bm, and a will be determined0、a1、……an、b0、b1、……bmFunction F as first fitting operator, wherein,
Then, the parameter determination module 14 determines the parameter of wave filter to build based on the described first fitting operator
The wave filter being connected with the source audio amplifier.
Specifically, the parameter determination module 14 is inverted to determine the parameter of wave filter by being fitted operator to first, and
Identified parameter is supplied to the system for connecting the source audio amplifier, so that this is connected with the system of the source audio amplifier according to described
The parameter that simulation system is provided builds wave filter, so that the playback effect of the source audio amplifier can be similar to target sound
Case.
Preferably, the parameter determination module 14 includes：Inversion unit.
The inversion unit is exchanged the zero pole point for being fitted operator to build the wave filter being connected with the source audio amplifier.
It is further preferable that the inversion unit also includes computing unit.
When fitting operator has the zero point outside unit circle, then the computing unit is using the inverse of the zero point as limit.
As a kind of preferred embodiment of the present invention, when the described first merging signal fitting can not be by foregoing fitting module 13
During the second merging signal, then the reference audio signal fitting is merged into signal to obtain the second fitting operator for first, and will
The reference audio signal fitting is the second merging signal to obtain the 3rd fitting operator；Then, aforementioned parameters determining module 14
The parameter of wave filter is determined pair to be connected with the source audio amplifier based on the described second fitting operator and the 3rd fitting operator
Wave filter is configured.
Specifically, operator phase is fitted after the parameter determination module 14 inverts the described 3rd fitting operator with described second
Multiply to determine the parameter of wave filter to build the wave filter being connected with the source audio amplifier.
Wherein, the parameter determination module 14 is calculated the first fitting with foregoing the mode that the described 3rd fitting operator is inverted
The mode that son is inverted is same or similar, and is incorporated herein by reference, no longer repeats.
Wherein, the parameter determination module 14 merges signal fitting for the lowest mean square after the second merging signal based on first
Difference is more than more than the 60% of the first mean square deviation for merging signal, then confirms that the first merging signal can not be fitted to the second merging
Signal, that is,：mixE(FXN-YN)>0.6E(XN) wherein, signal sequence XNMerge signal, signal sequence Y for firstNFor second
Merge signal, N is the total length of signal sequence.
Wherein, reference audio signal fitting is merged the fit approach of signal for first, will referred to by the fitting module 13
The fit approach that audio signal is fitted to the second merging signal merges signal fitting for the second merging signal with foregoing by first
Fit approach is same or similar, and is incorporated herein by reference, no longer repeats.
Illustrate the effect of the present invention below by way of a specific embodiment：
For example, using MicroLab M-200 audio amplifiers as source audio amplifier, Medeli M8 audio amplifiers are as target audio amplifier, by this
After the simulation system simulation of invention, the frequency response curve of source audio amplifier substantially begins to the frequency response curve of target audio amplifier, such as Fig. 5 institutes
Show；And pass through audition, be similar to target audio amplifier after correction from sense of hearing really.
In summary, the method and system of simulated target audio amplifier playback effect of the invention, which are based on digital means, can make one
The playback effect of audio amplifier sounds the playback effect as another audio amplifier, therefore, using the method for the present invention, it can effectively adjust sound
The frequency response of case and phase curve, the deficiency of audio amplifier is made up, realize low cost to improve the quality of audio amplifier, audio amplifier is reached itself
Maximum potential.Using the method for the present invention, it can be made to high-grade audio amplifier with the easy and effective acoustics for improving low and middle-grade audio amplifiers
Draw close；And the default of various hi-fi audio amplifiers and monitor speaker can be provided, and strengthen the use range of high-grade audio amplifier, it is each so as to be lifted
The competitiveness of kind class audio amplifier.So the present invention effectively overcomes various shortcoming of the prior art and has high industrial utilization
Value.
The above-described embodiments merely illustrate the principles and effects of the present invention, not for the limitation present invention.It is any ripe
Know the personage of this technology all can carry out modifications and changes under the spirit and scope without prejudice to the present invention to above-described embodiment.Cause
This, those of ordinary skill in the art is complete without departing from disclosed spirit and institute under technological thought such as
Into all equivalent modifications or change, should by the present invention claim be covered.
Claims (14)
- A kind of 1. method of simulated target audio amplifier playback effect, it is characterised in that the side of the simulated target audio amplifier playback effect Method comprises at least：1) the reference audio signal each played to target audio amplifier and source audio amplifier respectively in multiple location points is recorded, to obtain Obtain multiple target recorded audio signals and multiple source recorded audio signals；2) the first merging signal is merged into after multiple target recorded audio signals are alignd, and is merged after multiple source recorded audio signals are alignd Merge signal for second；3) the described first merging signal fitting is merged into signal to obtain the first fitting operator for second；4) by inverting the first fitting operator to determine the parameter of wave filter to build the filtering being connected with the source audio amplifier Device.
- 2. the method for simulated target audio amplifier playback effect according to claim 1, it is characterised in that：Described first is fitted The zero pole point of operator determines the parameter of wave filter to build the wave filter being connected with the source audio amplifier to bringing.
- 3. the method for simulated target audio amplifier playback effect according to claim 2, it is characterised in that：When the described first fitting When operator has the zero point outside unit circle, then using the inverse of the zero point as limit.
- 4. the method for simulated target audio amplifier playback effect according to claim 1, it is characterised in that when the described first merging When signal can not be fitted to the second merging signal, methods described also includes step：The reference audio signal fitting is merged into signal to obtain the second fitting operator for first, and the reference audio is believed Number the second merging signal is fitted to obtain the 3rd fitting operator；The step 4) is changed to：It is multiplied after described 3rd fitting operator is inverted with the described second fitting operator to determine the parameter of wave filter to build The wave filter being connected with the source audio amplifier.
- 5. the method for simulated target audio amplifier playback effect according to claim 4, it is characterised in that：By the described 3rd fitting It is multiplied after the zero pole point exchange of operator with the described second fitting operator to determine the parameter of wave filter to build and the source sound The wave filter of case connection.
- 6. the method for simulated target audio amplifier playback effect according to claim 5, it is characterised in that：When the described 3rd fitting When operator has the zero point outside unit circle, then using the inverse of the zero point as limit.
- 7. the method for the simulated target audio amplifier playback effect according to any one of claim 1 to 6, it is characterised in that described Step 2) also includes：Using one of each target recorded audio signals as reference signal, and multiple target recorded audio signals are subjected to high frequency filter respectively Ripple, using the data catastrophe point in the reference signal after High frequency filter as the sound head of the reference signal, again with remaining High frequency filter In the respective data catastrophe point of each of target recorded audio signals afterwards, multiple data adjacent with respective data catastrophe point Each is fitted with reference signal respectively respectively as the sound head of respective signal, and with the sound head of error of fitting reckling The alignment of each target recorded audio signals is realized as the sound head of respective signal in position；And by multiple source recorded audio signals carry out with it is multiple Target recorded audio signals identical is handled to realize the alignment of each source recorded audio signals.
- 8. the method for simulated target audio amplifier playback effect according to claim 7, it is characterised in that：Based on Minimum Mean Square Error Criterion carries out the fitting of signal.
- 9. a kind of system of simulated target audio amplifier playback effect, it is characterised in that the simulated target audio amplifier playback effect is System comprises at least：Recording module, the reference audio signal for each being played to target audio amplifier and source audio amplifier respectively in multiple location points enter Row recording, to obtain multiple target recorded audio signals and multiple source recorded audio signals；Merging module, for after the alignment of multiple target recorded audio signals the first merging signal will to be merged into, and by multiple source recording letters Number alignment after merge into the second merging signal；Fitting module, for described first merging signal fitting to be merged into signal to obtain the first fitting operator for second；Parameter determination module, for inverting the described first fitting operator to determine the parameter of wave filter to build and the source The wave filter of audio amplifier connection.
- 10. the system of simulated target audio amplifier playback effect according to claim 9, it is characterised in that：When the described first conjunction And signal be when can not be fitted to the second merging signal, then it is that the fitting module, which is additionally operable to the reference audio signal fitting, The reference audio signal fitting is merged signal to obtain the 3rd by one merging signal to obtain the second fitting operator for second It is fitted operator；The parameter determination module is additionally operable to be multiplied to come really with the described second fitting operator after the described 3rd fitting operator is inverted The parameter of wave filter is determined to build the wave filter being connected with the source audio amplifier.
- 11. the system of the simulated target audio amplifier playback effect according to claim 9 or 10, it is characterised in that：The parameter Determining module includes：Inversion unit, for the zero pole point for being fitted operator to be exchanged.
- 12. the system of simulated target audio amplifier playback effect according to claim 11, it is characterised in that：The inversion unit Also include：Computing unit, for when be fitted operator the zero point outside unit circle be present when, then using the inverse of the zero point as limit.
- 13. the system of simulated target audio amplifier playback effect according to claim 9, it is characterised in that the merging module Also include：Alignment unit, for using one of each recorded audio signals as reference signal, and multiple recorded audio signals are subjected to height respectively After frequency filters, then using the data catastrophe point in the reference signal after High frequency filter as the sound head of the reference signal, with its reinforcement Frequently the respective data catastrophe point of each of filtered target recorded audio signals, the multiple data adjacent with respective data catastrophe point In each be fitted respectively with reference signal respectively as the sound head of respective signal, and with error of fitting reckling The alignment of each recorded audio signals is realized as the sound head of respective signal in sound head position.
- 14. the system of the simulated target audio amplifier playback effect according to claim 9 or 10 or 13, it is characterised in that：It is based on Least-mean-square-error criterion carries out the fitting of signal.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1416298A (en) * | 2002-11-06 | 2003-05-07 | 巨镊（广州）电子科技有限公司 | Acoustic system capable of describing and modifying parameters of loudspeaker |
| CN101052242A (en) * | 2006-04-05 | 2007-10-10 | 哈曼贝克自动系统股份有限公司 | Method for automatically equalizing a sound system |
| CN201893930U (en) * | 2010-12-06 | 2011-07-06 | 上海山景集成电路技术有限公司 | VF calibration system |
| CN103220597A (en) * | 2013-03-29 | 2013-07-24 | 苏州上声电子有限公司 | Balancing device for sound field in vehicle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9668072B2 (en) * | 2009-07-11 | 2017-05-30 | Steven W. Hutt | Loudspeaker rectification method |
-
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1416298A (en) * | 2002-11-06 | 2003-05-07 | 巨镊（广州）电子科技有限公司 | Acoustic system capable of describing and modifying parameters of loudspeaker |
| CN101052242A (en) * | 2006-04-05 | 2007-10-10 | 哈曼贝克自动系统股份有限公司 | Method for automatically equalizing a sound system |
| CN201893930U (en) * | 2010-12-06 | 2011-07-06 | 上海山景集成电路技术有限公司 | VF calibration system |
| CN103220597A (en) * | 2013-03-29 | 2013-07-24 | 苏州上声电子有限公司 | Balancing device for sound field in vehicle |
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