CN108154180A - The selection method and device of personalized head transfer functions - Google Patents
The selection method and device of personalized head transfer functions Download PDFInfo
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Abstract
The invention belongs to field of computer technology, provide a kind of selection method and device of personalized head transfer functions.This method includes obtaining sample data, classify to sample data, from sorted sample data, filter out characteristic parameter, from the characteristic portion data of the tester of pre-acquiring, it filters out and the matched HRTF data of characteristic parameter, accuracy is perceived to acoustics audition test localization of sound precision, front and rear degree of aliasing and orientation according to tester, in HRTF data, determine target HRTF data, according to the psychological factor perception characteristics of tester, judge whether data of the tester in acoustics audition test are effective：If so, according to subjective method for trimming, target HRTF data are adjusted.The selection method and device of personalization head transfer functions of the invention can select the HRTF data of most suitable tester fast and efficiently according to the HRTF data measured.
Description
Technical field
The present invention relates to field of computer technology, and in particular to a kind of selection method and dress of personalization head transfer functions
It puts.
Background technology
Head related transfer function (HRTF) describes process of the sound wave from sound generation source to ears in free found field, main anti-
What is reflected is integrated filter effect of the body parts such as head, auricle, trunk to sound wave.
However, for different people, everyone physiological make-up of itself is different, for the filter effect of sound wave
Difference, therefore everyone can have the HRTF of respective personalization.But in actual application, due to test environment and experiment
The influence of condition, it is difficult to which the personalized HRTF to everyone is measured and calculated, and in practical applications, it is impossible to needle
It carries out primary relevant personalization HRTF to everyone to measure, then in the design applied, this is clearly unpractiaca.
Exist in existing method and impersonal theory HRTF is selected using racing formula, still, the selection ratio of this method
It is rougher, can not in mass data well obtain needed for data, only do two in the HRTF data basis selected at random
Two compare, and just terminate to compare when loser twice eliminates number and reaches preset number.In this way than less complete fairness, very
May there can be the data for being not exclusively suitble to side test person's feature in remaining not superseded HRTF data.
Also, selection method is excessively single, is only selected in the whole text with tournament method, and contest formula selection method is in itself
In the presence of very big error.And to the human ear, it is not very accurately that there are one for the discriminating power of Sounnd source direction
Fixed error, it is not very accurate to perceive azimuth by the above method.
How fast and efficiently according to the HRTF data measured, the HRTF numbers of most suitable tester are selected
According to the problem of being those skilled in the art's urgent need to resolve.
Invention content
For the defects in the prior art, the present invention provides a kind of selection methods and dress of personalized head transfer functions
It puts, the HRTF data of most suitable tester can be selected fast and efficiently according to the HRTF data measured.
In a first aspect, the present invention provides a kind of selection method of personalized head transfer functions, this method includes：
Sample data is obtained, classifies to sample data, from sorted sample data, filters out characteristic parameter；
From the characteristic portion data of the tester of pre-acquiring, filter out and the matched HRTF data of characteristic parameter；
Accuracy is perceived to acoustics audition test localization of sound precision, front and rear degree of aliasing and orientation according to tester,
In HRTF data, target HRTF data are determined；
According to the psychological factor perception characteristics of tester, judge whether data of the tester in acoustics audition test have
Effect：
If so, according to subjective method for trimming, target HRTF data are adjusted.
Further, sample data is obtained, classifies to sample data, from sorted sample data, filters out
Characteristic parameter, including：
Obtain sample data；
According to characteristic morphology parameter, space coordinates are built, are classified using space length to sample data；
From sorted sample data, characteristic parameter is filtered out.
Based on the selection method embodiment of above-mentioned arbitrary personalized head transfer functions, further, according to tester couple
Acoustics audition test localization of sound precision, front and rear degree of aliasing and orientation perceive accuracy, in HRTF data, determine target
HRTF data, including：
In the horizontal plane, according to the tester to the audiometry accuracy of judgement degree in orientation, and calculated level surface azimuth perceives
Angular deviation, from known HRTF data, the preliminary HRTF data for screening specified quantity；
On middle vertical plane, count perception angle of the tester in x-y coordinate in prescribed limit and it is front and rear obscure rate, and
According to the perception angle of statistics and front and rear mixed efficiency, from the HRTF data of specified quantity, target HRTF data are determined.
Further, on middle vertical plane, perception angle of the tester in x-y coordinate in prescribed limit and front and rear is counted
Obscure rate, and the perception angle according to statistics and front and rear mixed efficiency, from the HRTF data of specified quantity, determine target HRTF numbers
According to, including：
On middle vertical plane, mathematical point and test scope in x-y coordinate are determined；
Determine actual spot of measurement of the tester in x-y coordinate；
In defined test scope, according to mathematical point and actual spot of measurement, statistics perceives angle；
According to the perception angle of statistics, acoustic image track is drawn；
According to the quantitative value in acoustic image track, rate is obscured before and after determining；
Obscure rate according to front and rear, from the HRTF data of specified quantity, determine target HRTF data.
Based on the selection method embodiment of above-mentioned arbitrary personalized head transfer functions, further, according to tester's
Psychological factor perception characteristics judge whether data of the tester in acoustics audition test are effective, including：
According to the degree tired out of tester, it is sick of degree, tensity, determines the psychological condition of tester；
If the psychological condition of tester is steady, data of the tester in acoustics audition test are effective,
Otherwise, then data invalid of the tester in acoustics audition test.
Based on the selection method embodiment of above-mentioned arbitrary personalized head transfer functions, further, finely tuned according to subjectivity
Method is adjusted target HRTF data, including：
Obtain the feedback orientation of tester's feedback；
Judge whether feedback orientation and the target bearing in target HRTF data of tester are consistent：
If so, the target bearing of target HRTF data is correct,
If it is not, then adjust the spectral magnitude of target HRTF data.
Further, the spectral magnitude of target HRTF data is adjusted, including：
The spectral magnitude of target HRTF data is ranked up；
For the spectral magnitude of the target HRTF data after sequence, by dichotomy, adjustment direction is determined, and along adjustment side
To, according to it is scheduled adjustment step pitch be adjusted.
Further, for the spectral magnitude of the target HRTF data after sequence, by dichotomy, adjustment direction is determined,
And along adjustment direction, it is adjusted according to scheduled adjustment step pitch, including：
For the spectral magnitude of the target HRTF data after sequence, by dichotomy, adjustment direction is determined；
Along adjustment direction, the spectral magnitude of target HRTF data is adjusted according to the first adjustment step pitch, according still further to
Two adjustment step pitches are adjusted the spectral magnitude of target HRTF data, and the first adjustment step pitch is more than second adjustment step pitch.
Second aspect, the present invention provide a kind of selection device of personalized head transfer functions, which includes characteristic
According to determining module, individuation data acquisition module, target HRTF data determining modules, Effective judgement module and module is adjusted,
Characteristic determining module is classified to sample data, from sorted sample data, is screened for obtaining sample data
Go out characteristic parameter；Individuation data acquisition module is used for from the characteristic portion data of the tester of pre-acquiring, is filtered out and spy
Levy the matched HRTF data of parameter；Target HRTF data determining modules are used to determine acoustics audition test sound according to tester
Position precision, front and rear degree of aliasing and orientation perceive accuracy, in HRTF data, determine target HRTF data；Effective judgement
Module is used for the psychological factor perception characteristics according to tester, judges whether data of the tester in acoustics audition test have
Effect, when data of the adjustment module in acoustics audition test are effective, then according to subjective method for trimming, to target HRTF data
It is adjusted.
As shown from the above technical solution, the selection method and device of personalized head transfer functions provided in this embodiment,
The device can classify to HRTF data, be screened, and finally determine target HRTF data.In non-personalized HRTF data
In, the morphological feature parameter of binding test person determines personalized HRTF data, overcomes measurement experiment condition deficiency and data
The shortcomings that computationally intensive, greatly reduces test job amount, quickly to select approximate HRTF.Also, since people is to sound
The positioning of sound has certain fuzziness, in general, exists centainly between orientation and true bearing that testee perceives
Error, therefore select to take the most multiple spot that can be accommodated in error range more convincing as actual test result.
Therefore, the selection method and device of the present embodiment personalization head transfer functions, can be fast and efficiently according to
HRTF data through measuring select the HRTF data of most suitable tester.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution of the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described.In all the appended drawings, similar element
Or part is generally identified by similar reference numeral.In attached drawing, each element or part might not be drawn according to practical ratio.
Fig. 1 shows the first method flow chart of the selection method of personalized head transfer functions provided by the present invention；
Fig. 2 shows the second method flow charts of the selection method of personalized head transfer functions provided by the present invention；
Fig. 3 shows the structure diagram of the selection device of personalized head transfer functions provided by the present invention.
Specific embodiment
The embodiment of technical solution of the present invention is described in detail below in conjunction with attached drawing.Following embodiment is only used for
Clearly illustrate technical scheme of the present invention, therefore be intended only as example, and the protection of the present invention cannot be limited with this
Range.
It should be noted that unless otherwise indicated, technical term or scientific terminology used in this application should be this hair
The ordinary meaning that bright one of ordinary skill in the art are understood.
In a first aspect, the selection method of a kind of personalized head transfer functions that the embodiment of the present invention is provided, with reference to Fig. 1
Or Fig. 2, this method include：
Step S1 obtains sample data, classifies to the sample data, from sorted sample data, screening
Most representative characteristic parameter, so as to obtain characteristic parameter.
Step S2 from the characteristic portion data of the tester of pre-acquiring, is filtered out matched with the characteristic parameter
HRTF data obtain its characteristic parameter according to the main morphological features of tester, filter out and characteristic parameter most similar one
Part HRTF.
Step S3 perceives acoustics audition test localization of sound precision, front and rear degree of aliasing and orientation according to tester
Accuracy in HRTF data, determines target HRTF data.
Step S4 according to the psychological factor perception characteristics of tester, judges number of the tester in acoustics audition test
According to whether effectively：If so, it performs：
Step S5 according to subjective method for trimming, is adjusted the target HRTF data.
As shown from the above technical solution, the selection method of personalized head transfer functions provided in this embodiment, this method
It can be classified to HRTF data, be screened, and finally determine target HRTF data.In non-personalized HRTF data, knot
It closes the characteristic parameter of tester and to localization of sound, determines personalized HRTF data, overcome measurement experiment condition not
The shortcomings that foot and calculation amount are heavy, greatly reduces test job amount, quickly to select approximate HRTF.Also, due to
People has certain fuzziness to localization of sound, in general, exists between orientation and true bearing that testee perceives
Certain error, therefore in actual selection, the most multiple spot that can be accommodated in error range is chosen, as actual test result more
With convincingness.
Therefore, the selection method of the present embodiment personalization head transfer functions can fast and efficiently basis measure
HRTF data, select the HRTF data of most suitable tester.
In order to further improve the accuracy of the selection method of the present embodiment personalization head transfer functions, specifically,
In terms of data classification, sample data is obtained, classifies to the sample data, from sorted sample data, filters out
During characteristic parameter, the specific implementation process is as follows：
Obtain sample data.
According to characteristic morphology parameter, such as the representative size of morphological feature parameter, space coordinates are built, utilize space
Distance classifies to sample data.
From sorted sample data, characteristic parameter is filtered out.
According to privileged site indication range, classify to HRTF data.
For example, each variable of privileged site can be ear length, shoulder breadth and height, three's is described as follows：
The measurement of ear length：Subject is eyed to the front in sitting posture.Main examination station is on the right side of subject, with vernier caliper measurement external ear
The distance between highs and lows.It the direction of measurement should be parallel with the longest axis direction of external ear.By vernier calliper during measurement
The fixed feet of ruler is placed in ear-lobe bottom.Wherein, the indication range of ear is 1 centimetre.
The measurement of maximum shoulder breadth：Subject is stood in standing position, main examination in the behind of subject, and two-arm deltoid muscle is measured with big right-angle gauge
On position, the upper arm transverse horizontal air line distance between most protruding parts outward.Maximum suction during normal respiration is taken during measurement as possible
Gas point carries out.Wherein, the indication range of shoulder breadth is 5 centimetres.
The measurement of height：Subject measures the vertical range that standing surface is pushed up to the end in standing position, main anthropometer on probation.It measures
When, it is the movable leg of anthropometer is repeatedly upper overhead to move, it is ensured that measure maximum distance.Wherein, the index model of height
Enclose is 10 centimetres.
Here, the selection method of the present embodiment personalization head transfer functions, it can be according to privileged site parameter representativeness
Size is classified, to filter out the HRTF data for being more suitable for tester, to realize the rough selection of HRTF data.
Aspect is determined in target HRTF data, and the selection method of the present embodiment personalization head transfer functions can carry out carefully
Selection is caused, i.e., is selected from horizontal plane and vertical plane.According to tester to acoustics audition test localization of sound precision, preceding
Degree of aliasing and orientation perceive accuracy afterwards, in HRTF data, when determining target HRTF data, the specific implementation process is as follows：
In the horizontal plane, according to the tester to the audiometry accuracy of judgement degree in orientation, and calculated level surface azimuth perceives
Angular deviation, from known HRTF data, the preliminary HRTF data for screening specified quantity.
For example, when horizontal plane is selected, the virtual test signal in 30 orientation in horizontal plane, level side can be selected
Parallactic angle is chosen for：- 80 °, -65 °, -55 °, -45 °, -35 °, -25 °, -15 °, -5 °, 5 °, 15 °, 25 °, 35 °, 45 °, 55 °, 65 °,
Totally 15 azimuths, front and rear totally 30 symmetrical, under the test signal of each orientation generation, parallactic angle perceives above calculated level face
Angular deviation, so that it is determined that the highest several HRTF data of degree of approximation on horizontal plane.
On middle vertical plane, count perception angle of the tester in x-y coordinate in prescribed limit and it is front and rear obscure rate, and
According to the perception angle of statistics and front and rear mixed efficiency, from the HRTF data of specified quantity, target HRTF data are determined.
For example, on middle vertical plane, mathematical point and test scope in x-y coordinate are determined.
Determine actual spot of measurement of the tester in the x-y coordinate.
In defined test scope, according to the mathematical point and actual spot of measurement, statistics perceives angle.
According to the perception angle of statistics, acoustic image track is drawn.
According to the quantitative value in the acoustic image track, rate is obscured before and after determining.
According to it is described it is front and rear obscure rate, from the HRTF data of specified quantity, determine target HRTF data.
In actual application, when the data on middle vertical plane are selected, the specific implementation process is as follows：Select middle vertical plane
The HRTF data in upper 13 orientation with a signal phase convolution, generate the test virtual signal in middle vertical plane respectively, and the test is virtual
Signal is between -45 ° to+225 °, and with 22.5 ° of signals for interval, this 13 test virtual signals are equally distributed
In a circular trace, tester's first is sitting in circle centre position and carries out audition.Every suit HRTF is selected, during test, each
Azimuth acoustic image generates 10 times, and then shuffle, the angle that record tester's first is experienced draw coordinate diagram, abscissa generation
Table known target angle, ordinate represent subject's first and experience angle.Subject's first is marked to experience every time in figure each
Angle value, and 13 orientation angle points under theory are marked, the line of this 13 points should be that an inclination angle for crossing origin is
45 ° of oblique line then using this 13 points as the center of circle, draws circle, statistics falls the quantity put in circle with 5 ° for radius.13 are tested
Points are recorded respectively in circle in virtual signal coordinate diagram, then the corresponding test signal of a fairly large number of point is required.
For 0 ° on middle vertical plane and 180 ° of both directions, it is also necessary to count the front and rear confusion probabilities of each test signal, that is, obscure number
Accounting, after this two steps statistical analysis, we can select approximate test signal.
Since human ear is poor for the non-representative orientation sensing capability in space, can not the definite specific azimuth of aware space,
Here, the selection method of the present embodiment personalization head transfer functions, can select in two certain surfaces of horizontal plane and middle vertical plane
On specific angle measure, in order to determine target HRTF data.
In terms of the Effective judgement of data, according to the psychological factor perception characteristics of tester, judge the tester in sound
When whether the data in audition test are effective, the specific implementation process is as follows：
According to the degree tired out of tester, it is sick of degree, tensity, determines the psychological condition of the tester.
If the psychological condition of the tester is steady, data of the tester in acoustics audition test are effective,
Otherwise, then data invalid of the tester in acoustics audition test.
Here, the selection method of the present embodiment personalization head transfer functions, can combine psychological factor and evaluate mechanism, really
Determine the current state of tester, to determine the validity of test data of experiment, improve the accuracy of target HRTF data.
Horizontal plane and vertical plane selection terminate after, addition psychological factor evaluation mechanism, to entire audiometry process whether
Steadily judged, determine whether subject is effective in whole experiment process acquisition data, and next step judgement is carried out if steady,
If for the acquisition process of certain data, tester occurs judging jiggly phenomenon, then gives up these data.
For example, for entire test process, psychological questionnaire survey is carried out to tester, this is primarily to reference to tester
Whether stable state is in during entire audiometry.Tester carries out the record of following content at regular intervals：Subject
The degree tired out of person, the bored degree of subject, subject tensity.It is thin using the semanteme in the evaluation of subjective sound quality
Point-score is evaluated, and respectively using degree tired out, bored degree, tensity as 3 evaluation variables, 3 are evaluated with 7 adjectives
The degree of strength of a variable, and grow from weak to strong and numeralization assignment is carried out to level of sensitivity successively, it is specific as shown in table 1：
Table 1
Three statistical results of testee are obtained by test, and calculate the mean value and standard deviation of three respectively, and root
According to obtained mean value and standard deviation, judge whether tester's phychology in whole process is steady, and whether is test data utilizability
Meet subjective selection.It is possible thereby to abandon the larger data of certain errors in judgement, if whole process all tends to be steady, illustrate
Entire test process can meet subjective selection requirement.
Here, the selection method of the present embodiment personalization head transfer functions, by selecting roughly and careful selection, realization
The individualized selection of HRTF data, in order to accurately and rapidly realize the individualized selection of HRTF data.
The HRTF data obtained by several steps above, it is already possible to meet basic acoustics location requirement, if but thinking
To accurate personalization HRTF data, it is also necessary to carry out subjective fine tuning to the known HRTF data selected.
In terms of data point reuse, according to subjective method for trimming, when being adjusted to target HRTF data, process is implemented
It is as follows：
Obtain the feedback orientation of tester's feedback.
Judge whether feedback orientation and the target bearing in target HRTF data of tester are consistent：
If so, the target bearing of target HRTF data is correct,
If it is not, then adjust the spectral magnitude of target HRTF data.
Wherein, when adjusting the spectral magnitude of target HRTF data, the specific implementation process is as follows：
The spectral magnitude of target HRTF data is ranked up.
For the spectral magnitude of the target HRTF data after sequence, by dichotomy, adjustment direction is determined, and along adjustment side
To, according to it is scheduled adjustment step pitch be adjusted, i.e., for sequence after target HRTF data spectral magnitude, pass through two points
Method determines adjustment direction.
Along adjustment direction, the spectral magnitude of target HRTF data is adjusted according to the first adjustment step pitch, according still further to
Two adjustment step pitches are adjusted the spectral magnitude of target HRTF data, and the first adjustment step pitch is more than second adjustment step pitch.
Here, the selection method of the present embodiment personalization head transfer functions, the feedback orientation of binding test person or judgement
Probability corrects target HRTF data, improves target HRTF data and the compactness of tester.
For example, to the approximate HRTF data selected, i.e. h (k) carries out convolution with a signal, generates new three-dimensional letter
Number y (k).Then subject carries out audition, and whether inquiry subject sound comes from target bearing：
If it is, the HRTF values of record at this time, are exactly required personalized HRTF values.
If it is not, being adjusted to HRTF amplitudes at this time, this is primarily due to the amplitude of head related transfer function
It plays a major role to auditory localization.Dichotomy may be used in adjustment mode.I.e. on the basis of the HRTF amplitudes obtained originally, respectively
To becoming larger and becoming smaller, both direction is adjusted, and step pitch can judge that subject orientation judges whether accurately with selected as 2.When to
When change general orientation subject judges that probability significantly increases, then become general orientation in amplitude and be adjusted.Then can by step pitch with into
Number again increases or decreases, and obtains most possible interval, is then finely adjusted in section with half step distance, until quilt
When examination person judges accurate target bearing, the amplitude of HRTF at this time is recorded, then the HRTF obtained is exactly subject's personalization
HRTF。
Second aspect, the selection device of a kind of personalized head transfer functions that the embodiment of the present invention is provided, with reference to figure
3, the device include characteristic determining module 1, individuation data acquisition module 2, target HRTF data determining modules 3, effectively
Property judgment module 4 and adjustment module 5, characteristic determining module 1 classify to sample data for obtaining sample data,
From sorted sample data, characteristic parameter is filtered out；Individuation data acquisition module 2 is used for from the tester's of pre-acquiring
In characteristic portion data, filter out and the matched HRTF data of characteristic parameter；Target HRTF data determining modules 3 are used for according to survey
Examination person perceives accuracy to acoustics audition test localization of sound precision, front and rear degree of aliasing and orientation, in HRTF data, really
Set the goal HRTF data；Effective judgement module 4 is used for the psychological factor perception characteristics according to tester, judges that the tester exists
Data in acoustics audition test are effective, when data of the adjustment module 5 in acoustics audition test are effective, then according to subjectivity
Method for trimming is adjusted target HRTF data.
As shown from the above technical solution, the selection device of personalized head transfer functions provided in this embodiment, the device
It can be classified to HRTF data, be screened, and finally determine target HRTF data.In non-personalized HRTF data, knot
The morphological feature parameter of tester is closed, determines personalized HRTF data, measurement experiment condition deficiency is overcome and data calculates
The shortcomings that big is measured, greatly reduces test job amount, quickly to select approximate HRTF.Also, since people is to sound
Positioning has certain fuzziness, in general, there are certain error between orientation and true bearing that testee perceives,
Therefore select to take the most multiple spot that can be accommodated in error range more convincing as actual test result.
Therefore, the selection device of the present embodiment personalization head transfer functions can fast and efficiently basis measure
HRTF data, select the HRTF data of most suitable tester.
In the specification of the present invention, numerous specific details are set forth.It is to be appreciated, however, that the embodiment of the present invention can be with
It puts into practice without these specific details.In some instances, well known method, structure and skill is not been shown in detail
Art, so as not to obscure the understanding of this description.
In the description of this specification, reference term " one embodiment ", " example ", " is specifically shown " some embodiments "
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment of the present invention or example.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It is combined in an appropriate manner in one or more embodiments or example.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the different embodiments or examples described in this specification and the feature of different embodiments or examples
It closes and combines.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe is described in detail the present invention with reference to foregoing embodiments, it will be understood by those of ordinary skill in the art that：Its according to
Can so modify to the technical solution recorded in foregoing embodiments either to which part or all technical features into
Row equivalent replacement；And these modifications or replacement, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme should all cover in the claim of the present invention and the range of specification.
Claims (9)
1. a kind of selection method of personalization head transfer functions, which is characterized in that including：
Sample data is obtained, classifies to the sample data, from sorted sample data, filters out characteristic parameter；
From the characteristic portion data of the tester of pre-acquiring, filter out and the matched HRTF data of the characteristic parameter；
Accuracy is perceived to acoustics audition test localization of sound precision, front and rear degree of aliasing and orientation according to tester,
In HRTF data, target HRTF data are determined；
According to the psychological factor perception characteristics of tester, judge whether data of the tester in acoustics audition test are effective：
If so, according to subjective method for trimming, the target HRTF data are adjusted.
2. the selection method of personalized head transfer functions according to claim 1, which is characterized in that
Sample data is obtained, classifies to the sample data, from sorted sample data, filters out characteristic parameter,
Including：
Obtain sample data；
According to characteristic morphology parameter, space coordinates are built, are classified using space length to the sample data；
From sorted sample data, characteristic parameter is filtered out.
3. the selection method of personalized head transfer functions according to claim 1, which is characterized in that
Accuracy is perceived to acoustics audition test localization of sound precision, front and rear degree of aliasing and orientation according to tester,
In HRTF data, target HRTF data are determined, including：
In the horizontal plane, according to the tester to the audiometry accuracy of judgement degree in orientation, and calculated level surface azimuth perceives angle
Deviation, from known HRTF data, the preliminary HRTF data for screening specified quantity；
On middle vertical plane, count perception angle of the tester in x-y coordinate in prescribed limit and it is front and rear obscure rate, and according to
The perception angle of statistics and front and rear mixed efficiency from the HRTF data of specified quantity, determine target HRTF data.
4. the selection method of personalized head transfer functions according to claim 3, which is characterized in that
On middle vertical plane, count perception angle of the tester in x-y coordinate in prescribed limit and it is front and rear obscure rate, and according to
The perception angle of statistics and front and rear mixed efficiency from the HRTF data of specified quantity, determine target HRTF data, including：
On middle vertical plane, mathematical point and test scope in x-y coordinate are determined；
Determine actual spot of measurement of the tester in the x-y coordinate；
In defined test scope, according to the mathematical point and actual spot of measurement, statistics perceives angle；
According to the perception angle of statistics, acoustic image track is drawn；
According to the quantitative value in the acoustic image track, rate is obscured before and after determining；
According to it is described it is front and rear obscure rate, from the HRTF data of specified quantity, determine target HRTF data.
5. the selection method of personalized head transfer functions according to claim 1, which is characterized in that
According to the psychological factor perception characteristics of tester, judge whether data of the tester in acoustics audition test are effective,
Including：
According to the degree tired out of tester, it is sick of degree, tensity, determines the psychological condition of the tester；
If the psychological condition of the tester is steady, data of the tester in acoustics audition test are effective,
Otherwise, then data invalid of the tester in acoustics audition test.
6. the selection method of personalized head transfer functions according to claim 1, which is characterized in that
According to subjective method for trimming, the target HRTF data are adjusted, including：
Obtain the feedback orientation of tester's feedback；
Judge whether feedback orientation and the target bearing in the target HRTF data of the tester are consistent：
If so, the target bearing of target HRTF data is correct,
If it is not, then adjust the spectral magnitude of target HRTF data.
7. the selection method of personalized head transfer functions according to claim 6, which is characterized in that
The spectral magnitude of target HRTF data is adjusted, including：
The spectral magnitude of the target HRTF data is ranked up；
For the spectral magnitude of the target HRTF data after sequence, by dichotomy, adjustment direction is determined, and along the adjustment side
To, according to it is scheduled adjustment step pitch be adjusted.
8. the selection method of personalized head transfer functions according to claim 7, which is characterized in that
For the spectral magnitude of the target HRTF data after sequence, by dichotomy, adjustment direction is determined, and along the adjustment side
To, it is adjusted according to scheduled adjustment step pitch, including：
For the spectral magnitude of the target HRTF data after sequence, by dichotomy, adjustment direction is determined；
Along the adjustment direction, the spectral magnitude of target HRTF data is adjusted according to the first adjustment step pitch, according still further to
Two adjustment step pitches are adjusted the spectral magnitude of target HRTF data, and the first adjustment step pitch is walked more than the second adjustment
Away from.
9. a kind of selection device of personalization head transfer functions, which is characterized in that including：
Characteristic determining module for obtaining sample data, classifies to the sample data, from sorted sample number
In, characteristic parameter is filtered out；
Individuation data acquisition module, for from the characteristic portion data of the tester of pre-acquiring, filtering out and the feature
The matched HRTF data of parameter；
Target HRTF data determining modules, for according to tester to acoustics audition test localization of sound precision, front and rear mixed
Degree of confusing and orientation perceive accuracy, in HRTF data, determine target HRTF data；
Effective judgement module for the psychological factor perception characteristics according to tester, judges that the tester surveys in acoustics audition
Whether the data in examination are effective；
Adjust module, for the data in acoustics audition test it is effective when, then according to subjective method for trimming, to the target
HRTF data are adjusted.
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