CN102905213A - Audio signal processing device and audio signal processing method - Google Patents
Audio signal processing device and audio signal processing method Download PDFInfo
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- CN102905213A CN102905213A CN2012101394016A CN201210139401A CN102905213A CN 102905213 A CN102905213 A CN 102905213A CN 2012101394016 A CN2012101394016 A CN 2012101394016A CN 201210139401 A CN201210139401 A CN 201210139401A CN 102905213 A CN102905213 A CN 102905213A
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Abstract
According to one embodiment, an audio signal processing device (100) comprises a measurement module (312), a generator (314), a correction module (321), and an audio signal output module (214). The measurement module (312) is configured to measure a frequency characteristic of the input sound. The generator (314) is configured to generate correction data from a first data and a second data, wherein the correction data is used for correcting the frequency characteristic of the sound output by a first earphone, the first data represents the frequency characteristic of the sound output by the first earphone, and the second data represents the target frequency characteristic. The correction module (321) is configured to correct audio data based on the correction data.
Description
Technical field
Embodiment described herein is broadly directed to audio signal processing apparatus and acoustic signal processing method.
Background technology
In order to hear music or the voice of being reset by audio frequency apparatus, the user of equipment often wears head-telephone, such as earphone or stereosonic head-telephone.Depend on head-telephone from the frequency characteristic of the sound of head-telephone output.Therefore, the sound from head-telephone output may not have good frequency characteristic.
Therefore, with regard to frequency characteristic, requirement should improve from the sound of head-telephone output.
The acoustic characteristic of the earphone that the user is intended to use (that is, from the frequency characteristic of the sound of earphone output) is difficult to suitably proofread and correct, because not can be used for the means with pinpoint accuracy measuring frequency characteristic.The equalizer that can manually adjust can be used to proofread and correct the acoustic characteristic of earphone.In this case, the user need to adjust equalizer according to the music that he or she has felt.The impact of user's sensation when the sound source that the adjustment of equalizer is used or adjustment.Inevitably, even the user repeatedly adjusts equalizer, the acoustic characteristic of earphone also almost can not be corrected.
Summary of the invention
Therefore, the purpose of this invention is to provide audio signal processing apparatus and acoustic signal processing method, this audio signal processing apparatus and acoustic signal processing method can suitably be proofreaied and correct will be by the sound of earphone output.Substantially, according to an embodiment, audio signal processing apparatus comprises measurement module, maker, correction module and audio signal output module.Measurement module is configured to measure the frequency characteristic of sound import.Maker is configured to generate correction data from the first data and the second data, correction data is used for proofreading and correct the frequency characteristic from the sound of the first earphone output, the frequency characteristic from the sound of the first earphone output that the first data representation is measured by measurement module, and the second data representation target frequency characteristic.Correction module is configured to based on correction data audio calibration data.The audio signal output module is configured to the audio signal based on the voice data of proofreading and correct is outputed to the first earphone.Based on measured by measuring equipment from the frequency characteristic of the sound of the second earphone output and by measurement module measure from the product of the frequency characteristic of the sound of third ear machine output and the ratio from the frequency characteristic of the sound of third ear machine output of being measured by measuring equipment, generate target frequency characteristic.
Description of drawings
The ordinary construction of the various features that realize embodiment is described referring now to accompanying drawing.Accompanying drawing is provided in order to illustrated embodiment with relevant description, but not in order to limit the scope of the invention.
Fig. 1 is the exemplary figure that shows according to the outward appearance of the audio signal processing apparatus of embodiment, and the display unit of audio signal processing apparatus is maintained in the position of opening;
Fig. 2 is that demonstration is according to the exemplary block diagram of the hardware configuration of the audio signal processing apparatus of embodiment;
Fig. 3 is the exemplary figure that shows according to the software configuration that is incorporated in the media player in the audio signal processing apparatus of embodiment;
Fig. 4 shows the exemplary figure that how measures the characteristic of earphone according to another audio signal processing apparatus of embodiment by means of anchor clamps;
Fig. 5 is the exemplary figure that shows as the exemplary data of the earphone of testing high performance headsets and user according to the audio signal processing apparatus of other embodiment by means of anchor clamps;
Fig. 6 is the exemplary figure that shows the ear chip that is positioned near the earphone of microphone;
Fig. 7 shows when earphone as high performance headsets and user is positioned near the microphone, the exemplary figure of the exemplary data that the characteristic of the characteristic by measuring high performance headsets and user's earphone obtains;
Fig. 8 is the exemplary flow chart of the order of the correcting filter among the display setting embodiment;
How Fig. 9 shows by means of the frequency characteristic measurement device of gauge measurement system to measure from the exemplary figure of the frequency characteristic of the sound of high performance headsets output;
Figure 10 shows by measure the exemplary figure of the exemplary data that obtains from the frequency characteristic of the sound of high performance headsets output by means of the frequency characteristic measurement device of gauge measurement system;
How Figure 11 shows by means of the frequency characteristic measurement device of gauge measurement system to measure from the exemplary figure of the frequency characteristic of the sound of benchmark earphone output;
Figure 12 shows by measure the exemplary figure of the exemplary data that obtains from the frequency characteristic of the sound of benchmark earphone output by means of the frequency characteristic measurement device of gauge measurement system;
Figure 13 is the exemplary figure that shows the frequency characteristic of sound how to measure the earphone output of using from reality;
Figure 14 is the exemplary figure of the exemplary data that shows that the frequency characteristic of the sound by measuring the earphone output of using from reality obtains;
Figure 15 is the exemplary figure that shows the exemplary method that generates the target frequency characteristic data;
Figure 16 shows with regard to various acoustic characteristic key elements, the exemplary figure of the exemplary relationship of gauge measurement system and the actual earphone that uses;
Figure 17 is the exemplary figure that shows exemplary aim curve tuning characteristic t;
Figure 18 is that demonstration is by the exemplary figure of the frequency characteristic of the actual measurement of the high performance headsets of use aim curve tuning characteristic t correction; With
Figure 19 is the exemplary figure that shows exemplary target frequency characteristic.
Embodiment
Various embodiment will be described with reference to the drawings hereinafter.
Fig. 1 is the figure that shows according to the outward appearance of the computer (that is, audio signal processing apparatus) 100 of embodiment, and the display unit of computer 100 is maintained in the position of opening.As shown in Figure 1, computer 100 comprises computer master unit 111 and display unit 112.
Earphone 101 is inserted in the head-telephone lead-out terminal 111.Computer 100 transmits measuring-signal via the head-telephone terminal from earphone 101.Microphone receives measuring-signal, can measure the characteristic of earphone 101 from measuring-signal.
Fig. 2 is the figure of the hardware configuration of Display control computer 100.As shown in Figure 2, computer 100 comprises CPU 201, north bridge 202, main storage 203, south bridge 204, Graphics Processing Unit (GPU) 205, voice controller 206, BIOS-ROM209, LAN controller 210, hard disk drive (HDD) 211, DVD driver 212 and embedded controller/keyboard controller IC(EC/KBC) 216.
North bridge 202 is the Biodge devices that the local bus of CPU 201 are connected to south bridge 204.North bridge 202 is associated with the Memory Controller of carrying out access control at main storage 203.Further, north bridge 202 has the function of communicating by letter with GPU 205 via the universal serial bus that meets the PCI-EXPRESS standard.
GPU 205 is display controllers, and control is as the liquid crystal panel of the display monitor of computer 100.GPU 205 uses VRAM(not show) as the VRAM working storage.Any vision signal that GPU 205 generates is provided for liquid crystal panel.
South bridge 204 controls are arranged on any device on the bus.South bridge 204 is associated with Serial Advanced Technology Attachment (SATA) controller, and Serial Advanced Technology Attachment (SATA) controller is configured to control hard disk drive (HDD) 211 and DVD driver 212.Further, south bridge 204 has the function of communicating by letter with voice controller 206.Voice controller 206 is sonic source devices, and has the various circuit such as digital to analog converter and amplifier.Digital to analog converter is configured to convert digital signal to the signal of telecommunication.Amplifier is configured to amplify the signal of telecommunication from digital to analog converter output.Voice controller 206 further has other circuit, such as the analog to digital converter that is configured to the signal of telecommunication from microphone 213 inputs is converted to digital signal.
Embedded controller/keyboard controller IC(EC/KBC) the 216th, be associated with the one chip microcomputer of embedded controller and keyboard controller.Embedded controller and keyboard controller are designed to control respectively power supply and keyboard (KB) 113.
Fig. 3 is the figure that shows according to the software configuration that is incorporated in the media player 222 in the computer 100 of the first embodiment.As shown in Figure 3, media player 222 comprises signal measurement module 310 and adjusted weight amplification module 320.Computer 100 has lead-out terminal 214, and earphone 101 can be connected to lead-out terminal 214.Signal measurement module 310 is configured to measure the frequency characteristic of earphone 101, and the design revise filter.Adjusted weight amplification module 320 uses correcting filter, thus correcting audio signals.The audio signal of proofreading and correct is exported from earphone 101 via lead-out terminal 214.
The acoustic characteristic of earphone 101 (being the frequency characteristic of the output sound of earphone) can be measured with high reproducibility by the method for using anchor clamps (jig).Fig. 4 is how Display control computer 400 measures the characteristic of earphone by means of anchor clamps figure.The anchor clamps 410 that show among Fig. 4 comprise pipe 403, microphone 402 and sound-absorbing material 404.Pipe 403 for example is made of resin, and manages 403 straight extensions as water pipe or gas pipe.Pipe 403 has almost the volume that equates with the volume of people's external auditory meatus.Microphone 402 can be attached to pipe 403.Sound-absorbing material 404 is disposed in the pipe 403, is positioned at the near middle of pipe 403, and suppresses the impact of standing wave.
Computer 400 obtains the data about earphone 101 from the anchor clamps 410 that are attached to earphone 101.The characteristic of the sound of having heard via earphone 401 by means of the obtained data representation user of anchor clamps 410 does not comprise the relevant characteristic composition of sympathetic response in the external auditory meatus with the user.Consider this, the measuring system that comprises anchor clamps 410 also obtains the acoustic characteristic of the acoustic characteristic of high performance headsets and user's earphone.Further, use equalizer, the frequency characteristic of earphone is similar to the frequency characteristic of high performance headsets so equalizer is conditioned.As a result, can be so that the tonequality that user's earphone generates becomes the tonequality that is similar to high performance headsets.
Fig. 5 shows as the audio signal processing apparatus according to other embodiment to test the figure of the exemplary data of a plurality of earphones by means of anchor clamps 410.Data 501 expressions that show among Fig. 5 are by the acoustic characteristic of the sound of user's earphone generation.The acoustic characteristic of data 502 expression high performance headsets.Computer 400 generates differential datas 503, and differential data 503 expressions are about the data 502 of high performance headsets with about the difference between the data 501 of user's earphone.Then computer 400 uses equalizer, and this equalizer has the characteristic relevant with the curve that is represented by differential data 503.Thereby, can be so that the tonequality of user's earphone be similar to the tonequality of high performance headsets.
The state that earphone presented when the below will illustrate the frequency characteristic of measuring at computer 100.
Fig. 6 is the figure that shows the ear chip be positioned near the earphone 101 the microphone 213.As shown in Figure 6, computer 100 has the microphone 213 in casing 601.The user can keep earphone 101, the ear top is positioned near the sound collecting opening of microphone 213.In the time of near the ear top of earphone 101 remains on casing 601, computer 100 is via earphone 101 output measuring-signals.The measuring-signal that microphone 213 receives from computer 100.Therefore, computer 100 obtains near the data of the frequency characteristic that expression earphones 101 have in remaining on as shown in Figure 6 microphone 213.
Fig. 7 shows when high performance headsets and user's earphone 101 when both are positioned near the microphone 213, the figure of the exemplary data that the characteristic of the characteristic by measuring high performance headsets and user's earphone 101 obtains.Or rather, Fig. 7 shows data 701, data 702 and data 703.The characteristic of data 701 expression users' earphone 101.The characteristic of data 702 expression high performance headsets, the characteristic of user's earphone 101 should be corrected as the characteristic of high performance headsets.The difference of data 703 expression data 701 and data 702.Notice that the differential data 703 that shows among Fig. 7 is similar to the differential data 503(Fig. 5 that obtains by means of anchor clamps 401).
With referring again to Fig. 3 the media player 222 that designs and utilize the computer 100 of correcting filter is described.
The adjusted weight amplification module 320 of media player 222 comprises correcting filter 321, audio signal output module 322, measuring-signal memory module 325, display control module 323 and order receiver module 324.Adjusted weight amplification module 320 is proofreaied and correct the sound of sound and output calibration.When by headphone reproduction, the sound that sensation is proofreaied and correct by module 320 is generated by desirable earphone seemingly.Therefore, the user can appreciate this high-quality music of for example hearing via high performance headsets.
325 storages of measuring-signal memory module are used for the measurement audio signal of the frequency characteristic of measurement earphone 101.
Audio signal output module 322 at first via correcting filter 321, then via the lead-out terminal 214 that is connected to earphone 101, output audio signal.Further, in case of necessity, 322 outputs of audio signal output module remain on the audio signal in the audio signal output module 322.Be not limited to the measurement audio signal from the audio signal of audio signal output module 322 outputs.It can be for example from the audio signal of external equipment input, perhaps is stored in the audio signal among the HDD 211 of computer 100.Notice that when measuring-signal was output, correcting filter 321 remained in the non-correction mode.
The display of display control module 323 control computers 100 shows whether the inquiry user should measure the message of the frequency characteristic of earphone 102.If there is the user to input, order receiver module 324 receives measures initiation command.
Suppose that the user remains on earphone 101 near the microphone 213, and order receiver module 324 receives the measurement initiation command of pressing generation when measuring start button 1001 as the user.Then, order receiver module 324 indicative audio signal output module 322 output audio signals.As a result, computer 100 begins to measure near the frequency characteristic that earphone 101 has being positioned in microphone 213 time.
The signal measurement module 310 of media player 222 comprises input module 311, measurement module 312, temporary signal memory module 313, correction filter design module 314 and target property memory module 315.
Target property memory module 315 storage target properties generate the reference frequency characteristic that application program 223 has generated.
Microphone 213 converts the sound of input to the signal of telecommunication.
Temporary signal memory module 313 is kept interim storage by the data of the frequency characteristic of the expression audio signal of measurement module 312 measurements, until correction filter design module 314 reads this data.
Correction filter design module 314 comprises generation module 317 and setting module 318.Correction filter design module 314 is configured to the design revise filter, and this correcting filter is so that frequency characteristic is similar to the frequency characteristic that is stored in the target property memory module 315.
Generation module 317 from be stored in target property memory module 315 the target frequency characteristic data and the difference between the frequency characteristic data of the frequency characteristic of the expression earphone 101 that should be corrected in generating correction parameters.Generation module 317 is generating correction parameters from the sound of earphone 101 output and ear-drum that arrive the user also.The correction parameter that so generates will be used to so that the frequency characteristic of earphone 101 is similar to target frequency characteristic.Correction parameter for example is the parameter of using in the Parametric equalizer of general type.Notice that the parameter of using in the Parametric equalizer is bandwidth and the gain of intermediate frequency, adjustment.
In correcting filter 321, setting module 318 is set the correction parameter that is generated by generation module 317.
Processing with the correcting filter in the computer 100 of this embodiment of explanation set basis.Fig. 8 is the flow chart of order of the processing of the correcting filter in the display setting computer 100.
At first, media player 222 judges whether earphone 101 has been connected to lead-out terminal 214(square frame 801).Be not connected to no in the lead-out terminal 214(square frame 801 if find earphone 101), then display control module 323 is so that display display reminding user is connected to earphone 101 message (square frame 811) of lead-out terminal 214.Then, media player 222 judges again whether earphone 101 has been connected to lead-out terminal 214(square frame 801).
May find that earphone 101 is connected in the lead-out terminal 214(square frame 801 is).In this case, the setting module 318 of correction filter design module 314 is set correcting filter 321 for non-correction mode, and simultaneously, initialization is used for the audio settings (square frame 802) of measurement.
Next, display control module 323 is so that display display reminding user remains near the microphone 213 guiding (square frame 803) with earphone 102.
Thereafter, input module 311 execution are via the processing (square frame 806) of microphone 213 input audio signals.Then, measurement module 312 generates the measurement data of the frequency characteristic of expression audio signal from the audio signal of input.Measurement module 312 further judges whether produced error (square frame 807) when generating measurement data.If find any error (being in the square frame 807), for measuring frequency characteristic again, originate in square frame 804, reprocessing.
May not find error (in the square frame 807 no).If this is the case, the measurement data of generation is stored in the temporary signal memory module 313.
Then, generation module 317 from be stored in target property memory module 315 the target frequency characteristic data and the difference between the frequency characteristic data of the frequency characteristic of being stored in the temporary signal memory module 313 of should being corrected and expression earphone 101, generating correction parameters (square frame 808).
The correction parameter that is generated by setting module 318 is set at (square frame 809) in the correcting filter 321.Further, except correction parameter, setting module 318 rewrites the audio settings (square frame 810) that has been initialised in square frame 803.
Carry out aforesaid processing sequence, computer 100 is designed for the correcting filter of earphone 101.Thereby the tonequality that generates in earphone 101 is converted into the desirable tonequality of user.
As has been described, can easily measure the acoustic characteristic of earphone according to the computer 100 of this embodiment.Therefore, frequency characteristic can be corrected into the frequency characteristic that is suitable for earphone.
What expect is that the target frequency characteristic data that are stored in the target property memory module 315 should be the data that obtained by high performance headsets.But this method needs expensive, because the high performance headsets of many costlinesses must be used in respectively each production line, to realize a large amount of productions of computer 100.The acoustic characteristic of an earphone depends on the characteristic for the microphone of measuring acoustic characteristic.Inevitably, the acoustic characteristic of measuring by means of a microphone is different from the acoustic characteristic of measuring by means of another microphone.However, as seen from Figure 7, it is reproducible that the property difference between various types of earphones (on logarithmic scale) has been proved to be experimentally.Be considered to linear system if comprise the measuring system of earphone, then the product of acoustic characteristic key element will represent the characteristic of whole system.
Here it is why for the target property of the earphone 101 of judging the user, be not that high performance headsets is used as the benchmark earphone, but cheap earphone is used as the benchmark earphone.
As shown in Figure 9, the Frequency characteristic measurement 900 of gauge measurement system is measured from the frequency characteristic of the sound of high performance headsets 901 outputs, thereby generates the performance data (that is, gauge measurement system data) about high performance headsets.Figure 10 shows the figure from the exemplary frequency characteristic of the sound of high performance headsets 901 outputs that is measured by the Frequency characteristic measurement 900 of gauge measurement system.Next, as shown in figure 11, the Frequency characteristic measurement 900 of gauge measurement system is measured from the frequency characteristic of the sound of benchmark earphone 1101 outputs, generates benchmark earphone performance data.Figure 12 show measured by gauge measurement system, from the exemplary frequency characteristic of the sound of benchmark earphone 1102 outputs.As shown in figure 13, equipment (that is, computer) 100 is measured from the frequency characteristic of the sound of benchmark earphone 1101 outputs, thereby generates benchmark earphone performance data.Figure 14 shows that and expression that obtain by equipment 100 is from the exemplary data of the frequency characteristic of the sound of benchmark earphone 1101 outputs.
As shown in figure 15, target property generates application program 223, gauge measurement system), the performance data 1502(about the benchmark earphone is, another gauge measurement system) and about the performance data 1503(of benchmark earphone namely, the actual earphone that uses), generate target frequency characteristic data 1511.
Figure 16 shows with regard to various acoustic characteristic key elements, the relation of gauge measurement system and the actual earphone that uses.In Figure 16, aim curve tuning characteristic t is for the tuned frequency characteristic of proofreading and correct high performance headsets characteristic Ma * I.The high performance headsets characteristic Ma * I that shows among Figure 10 has the peak value at the 5kHz place.This peak value is caused by the intrinsic reverberation component of such earphone.If this peak value is suppressed, then tonequality will improve.Therefore, according to correction of frequency characteristic, from the sound of earphone output in the situation that generates aim curve by suppressing peak value will than do not suppressing peak value the time generate in the situation of aim curve and have higher quality.Figure 17 shows exemplary aim curve tuning characteristic t.Figure 18 shows the frequency characteristic that obtains by proofread and correct high performance headsets characteristic Ma * I of showing among Figure 10 according to the aim curve tuning characteristic t that shows among Figure 17.The frequency characteristic that shows among Figure 18 is the product of high performance headsets characteristic Ma * I and aim curve tuning characteristic t.In fact, this frequency characteristic is obtained by the logarithm addition, rather than via the multiplication of Ma * I * t.Because the longitudinal axis in the curve chart of display frequency characteristic is drawn decibel (dB), so the frequency characteristic that shows among Figure 18 is the curve of the summation of two frequency characteristics of expression.
The below will explain how to generate target frequency characteristic data 1511.
From both by the frequency characteristic of the high performance headsets 901 of Frequency characteristic measurement 900 actual measurements of gauge measurement system (Ma * I) and the frequency characteristic of benchmark earphone 1101 (Ma * R), and by frequency characteristic (the characteristic Mb of the high performance headsets that Mb * R), can calculate (perhaps inferring) equipment 100 can be measured * I * t of the benchmark earphone of equipment 100 actual measurements.Characteristic Mb * I * t can be used as the target property in the equipment 100.That is:
Mb×I×t=(Mb×R)×(Ma×I×t)/(Ma×R)
The microphone frequency characteristic Mb of equipment 100 is unknown, and can not directly measure at all.But microphone frequency characteristic Mb can be used to the calculation correction characteristic, because it not only is comprised in the characteristic of measurement of the earphone that will be corrected, and is comprised in the aim curve (that is, target property).The characteristic R of benchmark earphone and microphone characteristics Ma(namely, gauge measurement system) will be eliminated by reduction of a fraction.
Exemplary target frequency characteristic is displayed among Figure 19.
Multiply by the ratio of characteristic of the characteristic of high performance headsets and user's earphone by the characteristic U with user's earphone, the characteristic of user's earphone is corrected into target property, that is, high performance headsets (I * t).That is:
U×(I×t/U)=I×t
Notice that (I * t/U) is suitable frequency characteristic.
If equipment 100 is measured the characteristic of users' earphone 101, then the frequency characteristic Mb of the microphone characteristics Mb of equipment 100 * U will be obtained to comprise.Target frequency characteristic also comprises the microphone characteristics Mb of equipment 100.Therefore, in order to calculate for the correcting frequency characteristic that frequency characteristic Mb * U is corrected into target frequency characteristic Mb * I * t, be enough to find the ratio of characteristic Mb * I * t and characteristic Mb * I * t.That is:
I×t/U=((Mb×I×t)/(Mb×U)
=((Mb×R)×(Ma×I×t)/(Ma×R))/(Mb×U)
As above explanation, by using cheap benchmark earphone, but not expensive high performance headsets, the characteristic of user's earphone can suitably be corrected into target property.Therefore, user's earphone can be set to target property, and needn't bear expensive.
Note, in the inspection of after the manufacturing of equipment 100, carrying out, by coming the measuring frequency characteristic to be performed with benchmark earphone and target setting frequency characteristic.
(variation)
In the above-described embodiments, target frequency characteristic comprises the characteristic that depends on measuring system, and the characteristic of the actual measurement of earphone that therefore can be by the user is come correcting frequency characteristic.As an alternative, the characteristic of the measurement of benchmark earphone (Mb * R) and (Ma * R) can be used as general target property to proofread and correct by the difference in the characteristic of measurement mechanism or equipment actual measurement, thereby the difference in the correcting feature at first, then obtain to be the characteristic measured of user's earphone (Ma * U), and at last according to the characteristic (characteristic of the earphone of correcting user of Ma * U) by baseline system.That is:
(Ma×U)/(Mb×U)=(Ma×R)/(Mb×R)。Therefore:
(Ma×U)=((Ma×R)/(Mb×R))×(Mb×U)
Since the correcting feature of user's earphone be (Ma * I * t) with (therefore the ratio of Mb * U) provides following correcting frequency characteristic I * t/U:
I×t/U=(Ma×I×t)/(Ma×U)
Correcting frequency characteristic, that is, I * t/U only is expressed by target property and the target property that comprises correcting feature.Therefore, correcting frequency characteristic can be corrected as the characteristic of high performance headsets, that is, and and target property.
Can be stored among the HDD 211 by all types of target frequency characteristic of using a plurality of high performance earphones to generate.Then, the user can select any one in these target frequency characteristic.
As mentioned above, the target property of computer 100 execution generates application program 223 and generates target frequency characteristic.As an alternative, the acoustic characteristic data about the benchmark earphone that obtained of computer 100 can be written in another computer.In this case, this computer can generate target frequency characteristic from the acoustic characteristic data.
The media player program that computer 100 in above-described embodiment is carried out is provided with the form of the file that can be mounted and carry out, and is recorded in the computer readable recording medium storing program for performing such as CD-ROM, floppy disc (FD), CD-R or digital versatile disk [Sony] (DVD).
The media player program that will carry out in according to the computer 100 of above-described embodiment can be stored in the computer that is connected to such as the network of internet, and can be downloaded to computer 100 via this network.Further, the media player program that will carry out in computer 100 can be provided via the network such as the internet or distribute.
In addition, the media player program that will carry out in computer 100 can be distributed with the form that is recorded in the data among the ROM for example.
The media player program that will carry out in computer 100 defines above-mentioned module (that is, signal measurement module and adjusted weight amplification module).CPU 201(namely, processor), a hardware element, from recording medium reading media player program and carry out this program, whereby with above-mentioned module loading in main storage means.Thus, signal measurement module and adjusted weight amplification module are arranged in the main storage means.
Although described some embodiment, these embodiment only are that the mode by example presents, and and are not intended to limit the scope of the invention.Really, new embodiment described herein can be specific various other forms; In addition, in the situation that does not deviate from spirit of the present invention, can make various omissions, displacement and change to embodiment described herein.Claims of having and their equivalent are intended to cover this form or the modification that will fall within the scope and spirit of the present invention.
Claims (9)
1. an audio signal processing apparatus is characterized in that, comprising:
Measurement module is configured to measure the frequency characteristic of sound import;
Maker, be configured to generate correction data from the first data and the second data, described correction data is used for proofreading and correct the frequency characteristic from the sound of the first earphone output, the frequency characteristic from the sound of described the first earphone output that described the first data representation is measured by described measurement module, and described the second data representation target frequency characteristic;
Correction module is configured to based on described correction data audio calibration data; With
The audio signal output module is configured to the audio signal based on the voice data of described correction is outputed to described the first earphone,
Wherein, based on measured by measuring equipment from the frequency characteristic of the sound of the second earphone output and by described measurement module measure from the product of the frequency characteristic of the sound of third ear machine output and the ratio from the described frequency characteristic of the sound of described third ear machine output of being measured by described measuring equipment, generate described target frequency characteristic.
2. equipment as claimed in claim 1 is characterized in that, further comprises the second maker, is configured to generate described target frequency characteristic.
3. equipment as claimed in claim 1 is characterized in that, the frequency characteristic based on obtaining by proofreading and correct the described frequency characteristic from the described sound of described the second earphone output measured by described measuring equipment generates described target frequency characteristic.
4. equipment as claimed in claim 1 is characterized in that, described measurement module be configured to obtain with respectively from described the second earphone and the output of described third ear machine and be input to voice data corresponding to the acoustic phase of microphone via anchor clamps, and
Described anchor clamps comprise the pipe with the first opening and second opening, described sound is transfused to from described the second earphone and described third ear machine via described the first opening, and the described sound that is transfused to via described the first opening is output to described microphone via described the second opening.
5. equipment as claimed in claim 4 is characterized in that, described anchor clamps are included in the sound-absorbing material in the described pipe.
6. acoustic signal processing method that uses in audio signal processing apparatus, described audio signal processing apparatus have the measurement module for the frequency characteristic of the sound of measuring input, it is characterized in that described method comprises:
Generate correction data based on the first data and the second data, described correction data is used for proofreading and correct the frequency characteristic from the output of the first earphone, described the first data representation is from the frequency characteristic of the sound of described the first earphone output, and described the second data representation target frequency characteristic; With
Based on described correction data audio calibration data,
Wherein, based on measured by measuring equipment from the frequency characteristic of the sound of the second earphone output and by described measurement module measure from the product of the frequency characteristic of the sound of third ear machine output and the ratio from the frequency characteristic of the sound of described third ear machine output of being measured by described measuring equipment, generate described target frequency characteristic.
7. method as claimed in claim 6 is characterized in that, the frequency characteristic based on obtaining by proofreading and correct the described frequency characteristic from the described sound of described the second earphone output measured by described measuring equipment generates described target frequency characteristic.
8. method as claimed in claim 6 is characterized in that, described measuring equipment be configured to obtain with respectively from described the second earphone and the output of described third ear machine and be input to voice data corresponding to the acoustic phase of microphone via anchor clamps, and
Described anchor clamps comprise the pipe with the first opening and second opening, described sound is transfused to from described the second earphone and described third ear machine via described the first opening, and the described sound that is transfused to via described the first opening is output to described microphone via described the second opening.
9. acoustic signal processing method as claimed in claim 8 is characterized in that, described anchor clamps are included in the sound-absorbing material in the described pipe.
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