CN103631270B - Guide rail rotary chain drive sound source position regulates manned HRTF measuring circurmarotate - Google Patents
Guide rail rotary chain drive sound source position regulates manned HRTF measuring circurmarotate Download PDFInfo
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- CN103631270B CN103631270B CN201310616620.3A CN201310616620A CN103631270B CN 103631270 B CN103631270 B CN 103631270B CN 201310616620 A CN201310616620 A CN 201310616620A CN 103631270 B CN103631270 B CN 103631270B
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- audio amplifier
- circular orbit
- turntable
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Abstract
The present invention relates to Underwater Acoustic channels and the field of measuring technique of virtual auditory technology, more specifically, the present invention relates to a kind of guide rail rotary chain drive sound source position and regulate manned HRTF(head related transfer function) measuring circurmarotate.Comprise: circular orbit, turntable, seat, index dial, audio amplifier slipper bracket, chain gearing etc., the locus that described device realizes sound source by guide rail rotation and chain drive is located, by turntable rotate drive guide rail horizontally rotate, by the audio amplifier on pedal driven by rotating wheel chain slide on rails realize HRTF measure needed for sound source space orientation.Use and the invention solves the centripetal common centre of sphere of the number of people, the track center of circle, audio amplifier, audio amplifier locus can be measured accurately, easily, make measurement high spatial resolution HRTF function unrestricted, destroy less to place simultaneously, meet the multiple test and study needs in different place.
Description
Technical field
The present invention relates to Underwater Acoustic channels and the field of measuring technique of virtual auditory technology, more specifically, the present invention relates to a kind of for HRTF(head related transfer function) the spatial sound source position adjustments turntable measured.
Background technology
When people is in true environment during perceives sound information, in fact be in an acoustic propagation system be jointly made up of sound source, route of transmission, recipient, auricle, the head of acoustical signal and hearer are takeed on, trunk there occurs reflect, reflect, the acoustics effect such as diffraction and scattering, these positions of human body to the modulating action of acoustical signal can be unified represent i.e. head related transfer function (HeadRealatedTransferFunctions, HRTF) with a function.HRTF to describe in free found field sound source to the acoustic transmission relation of ears, there is individualized feature with the relating to parameters such as sound source position, frequency, contain the level difference (InterauralLevelDifference that sound wave arrives ears, ILD), mistiming (InterauralTimeDifference, and the important location clue such as phase differential (InterauralPhaseDifference, IPD) ITD).The location clue that human brain auditory system utilizes HRTFs to provide, comprehensively self auditory experience, judge the orientation of sound source.
The principle that virtual three-dimensional hearing technology is distinguished for sound source dimensional orientation by human auditory system, the transmission of simulation sound wave from sound source to ears, thus in earphone or loudspeaker, retransmit out the acoustic image of Virtual Space.Use HRTFs the sound in certain direction to be described as two propagation channels of left and right HRTFs to the communication process of left and right ear, just can reach the object utilizing two-channel to produce virtual three-dimensional sound.But produce the virtual acoustic in certain direction, need to know the HRTF of user in this orientation, omnibearing virtual auditory just needs to obtain the HRTF of user in whole space.Obtaining the most direct method of HRTF is mensuration, normally utilizing a loudspeaker being placed on space diverse location to play test signal, measuring HRTF by placing measuring microphone near ear canal entrance or near eardrum.In true man HRTF measures, seat, audio amplifier, audio amplifier guide rail position calibrating installation, playback set and acoustical signal harvester to be equipped with in anechoic room; Require testedly to be sitting on chair, keep motionless, seat can horizontally rotate, and to adjust horizontal azimuth, horizontal adjustment scope is 0 ° ~ 360 °; Audio amplifier points to tested head center all the time, and can on radius fixed guide adjusting position and pitch angle, the setting range at pitch angle is-30 ° ~ 90 °.
The acquisition pattern of direction sound source is the actual difficulties that HRTF measures.Sound source adopts wide dynamic frequency responding range audio amplifier, and this kind of audio amplifier volume weight is all very large, is not easy to often move.For the locus of sound source at multiple differing tilt angles can be obtained, multitone case and single-tone case is usually had to arrange two kinds of modes in an experiment.The audio amplifier of the corresponding different angles of employing one group arranged by multitone case, and this arrangement is by the restriction of audio amplifier volume, and sampling density is higher, and radius distance is larger, requires that the spatial dimension of anechoic chamber is larger; Simultaneously more wide dynamic frequency responding range audio amplifier, not only increases the reflection of sound, affect measurement result accuracy, and financial cost is very high.This arrangement is only applicable to Large-scale professional laboratory with favourable conditions and uses.Single-tone case is arranged and is only used an audio amplifier, the sound bearing obtained by adjustment audio amplifier locus, and this layout advantage is that financial cost is low, and measurement space requires little.Single-tone case adjusting method the most original installs one on the ceiling to move horizontally guide rail; Prepare many and can load and unload the suspension rod for adjusting audio amplifier upright position height on moving guide rail; An audio amplifier fixed support, can connect suspension rod, and adjustable audio amplifier angle of inclination.This method often changes an angle of inclination, will carry out dismantling the operation that the series of complex such as sound equipment support, replacing suspension rod, translation position, adjustment audio amplifier angle of inclination, installation is loaded down with trivial details, waste time and energy, inconvenience uses in the high-resolution HRTFs of large sample measures.
The track traction type audio amplifier apparatus for adjusting position that circular arc rail plate, audio amplifier guide rail car, guide rail car draw-gear that " the track traction type audio amplifier apparatus for adjusting position for HRTF measures " proposes in application for patent by radius 1.5 meters of central angles is 160 ° form.Pull audio amplifier railcar to move by the groove pulley on traction arc track, realize the location of audio amplifier at space arbitrary inclination.Arc track needs to be fixed on body of wall, and the level angle of audio amplifier is rotated by seat horizontal and obtains.As described in this patented claim, the more original control method of audio amplifier apparatus for adjusting position measured for HRTF improves, but also the common centre of sphere problem at not high, the guide rail center of circle and number of people center, audio amplifier point to the problems such as the calibration of the centre of sphere and also do not solve very well in Position location accuracy aspect; Secondly, heavier owing to measuring audio amplifier, pulley and interorbital easily skid, and audio amplifier slides in orbit and locates and also there is some problems; This device needs to be fixed on the wall of measurement environment in addition, destroys larger to measurement place.
Summary of the invention
For the deficiency that prior art exists, the object of the present invention is to provide a kind of manned turntable of chain transmission type audio amplifier position adjustments measuring HRTF, be exactly in the HRTF using single loudspeaker box arrangement method to produce directivity sound source measures, make sound source regulate not only easy, laborsaving, save time, and position accurate positioning, precision is high; Adopt combined type to install simultaneously, do not fix with measurement wall ground, place, damage little to measurement environment and place, be applicable to different HRTF measurement environment and use, be convenient to practical application and promote.
Goal of the invention of the present invention is achieved by the following technical solution.
The present invention is used for HRTF and measures, and comprises turntable, seat, arc-shaped guide rail.The motion of audio amplifier on guide rail is driven by chain.Realize the change of audio amplifier on Spatial Sphere latitude; The change of audio amplifier on Spatial Sphere longitude is realized by what rotate manned turntable; Number of people center and the guide rail centre of sphere is made to reach homocentric by adjusting seat upper-lower position; Made it towards the centre of sphere and number of people center by the laser designator calibration audio amplifier in voice box bracket.
Described arc guide rail adopts stainless steel to make, the scale value that it is tolerance that both sides indicate with arc length and angle respectively.Circuit orbit radius is 1.2 meters, and central angle is 360 °, and xsect is in " U " type.Race orthogonal is installed, and upper summit is connected with the rotation axis installed on the ceiling, and lower summit is connected with the turntable on floor, can level 360 ° rotation.Track is divided into two and half round guides by upper and lower two tie points, every 30 °, a little transmitting gear is housed in half rail groove, amounts to 7 pinion wheels; Audio amplifier slipper bracket second half guide rail is equipped with.
Audio amplifier slipper bracket is made up of audio amplifier fixed mount, sleeve and pulley.Sleeve is arc, radius 1.2 meters, and central angle is 5 °, and cross section in " mouth " type, can be enclosed within semi-circular track, and the centripetal cambered surface of sleeve is connected with audio amplifier fixed mount, and sleeve inner is equipped with pulley, and pulley is embedded in semi-circular track groove.Audio amplifier fixed mount is that " ten " font stainless steel frame is formed, and " ten " font frame four limit adjustable length is with the audio amplifier of applicable different model size, and " ten " font frame four limit is inwardly turned up, and bolt is equipped with in order to fixing audio amplifier in top.
Manned turntable is made up of turntable and seat, and seat is fixed on the dead axle of turntable, does not rotate with turntable.Seat height adjusting, and can rotate around the axle of self.Turntable and seat are separately installed with stop standing valve.Turntable is equipped with index dial, the angle of rotation can be measured.Simultaneously for guaranteeing that track unitary rotation angle is consistent, on the ceiling rotating shaft is also equipped with index dial, it is consistent with the nominal of the index dial on turntable, and zero-bit is alignd.Seat is ergonomic designs seat, can alleviate the fatigue that tested long-time measurement produces.
Chain connects audio amplifier slipper bracket, strides across arc guide rail, with coincideing of runner on the pinion wheel in guide-track groove and turntable.Audio amplifier moves through pedal rotating wheel on guide rail, drives the semicircle moving on rails of audio amplifier at its place on chain.Runner also can be driven by motor.
By being equipped with to calibrate the centripetal laser calibrator of audio amplifier on audio amplifier fixed mount, backrest being provided with the head rest of fixing tested head, preventing tested head movement in measuring process, and the common centre of sphere that the guide rail center of circle, number of people center, audio amplifier point to can be guaranteed.
Adopt apparatus of the present invention any angle of pitch in implementation space and azimuthal HRTF to measure, the spatial resolution of HRTF function measurement is improved greatly, can meet and test and the multi-purpose needs such as research.Apparatus of the present invention are had a style of one's own and can modularization dismounting.Do not need that room is measured to HRTF and carry out large change (anechoic room drill hole on wall, mounting bracket etc. as measured at HRTF), destroy less to environment and place, by increasing the shaft length of supporting guide or increasing turntable height and can be applicable to various measurement environment (room) and use.Use apparatus of the present invention can adjust the locus of audio amplifier in HRTF measuring process easily, and the angle of pitch, the horizontal angle parameter of energy Measurement accuracy audio amplifier.Just precalculated position can be adjusted to accurately in the position of audio amplifier and direction by the gear on tested foot-operated turntable, simplify adjustment process, save tester, raise labour efficiency.
Accompanying drawing explanation
Fig. 1 is the front view of apparatus of the present invention;
Fig. 2 is the track cross-sectional view that gear is installed
Fig. 3 is the track cross-sectional view that audio amplifier slipper bracket is installed
Fig. 4 is UFO cycle longitudinal section
Fig. 5 is the track longitudinal section that chain is installed
Fig. 6 is top rotating shaft longitudinal section
Fig. 7 is the longitudinal section of turntable and seat
Number in the figure explanation
Shaft bearing 23-lower rotary shaft bearing 24-sleeve 25-pointer on rotating shaft 11-seat 12-pedal 13-chain 14-runner 15-floor 16-gear 17-pulley blocks 18-audio amplifier fixed mount 19-runner wheel disc 20-pedal 21-rotary wheel frame 22-on index dial 8-turntable 9-turret base 10-under 1-ceiling 2-high scale dish 3-circular orbit 4-head rest 5-audio amplifier slipper bracket 6-lower rotary shaft 7-
Embodiment
Further illustrate the present invention below in conjunction with accompanying drawing how to realize
Embodiment
As shown in Figure 1, guide rail rotary chain drive sound source position regulates manned HRTF measuring circurmarotate to comprise round guide 3, seat 11, turntable 8, audio amplifier slipper bracket 5(comprises audio amplifier fixed mount 18, pulley 19), gearing (chain 13, runner 14, gear 16, pulley 17), wheelwork (lower rotary shaft 6, upper rotating shaft 10, upper shaft bearing 22, lower rotary shaft bearing), and measurement mechanism (high scale dish 2, lower index dial 7, and the scale band on guide rail).Described turret base 9 is placed on floor 15, and turntable 8 is arranged on base 9 by bearing 23, and turntable 8 can level 360 ° rotation.Upper rotating shaft 10 is arranged on ceiling 1 by bearing 22, and upper rotating shaft 10 also can level 360 ° rotation.Upper rotating shaft 10 and the alignment of lower rotary shaft 6 axle center, perpendicular to floor 15, circular orbit 3 is vertically fixed on the moving axis of rotating shaft 10, lower rotary shaft 6, can do level 360 ° rotation with them.The rotating shaft of gear 16 is fixedly mounted in " U " type groove of round guide 3, and gear 16 is rotatable, and the sleeve 24 of audio amplifier slipper bracket 5 is enclosed within circular orbit 3, and the pulley in sleeve 24 is stuck in " U " type groove of round guide 3, can slide in groove.Runner 14 is arranged on turntable 8 by rotary wheel frame 21, chain 13 two ends are fixed on the wheel shaft of head and the tail two wheel of the pulley blocks 17 in audio amplifier slipper bracket 5 sleeve 24, be embedded in the groove of round guide 3, chain 13 engages with gear 16, runner 14, rotated by pedal 20 rotating wheel 14, drive chain 13 and voice box bracket fixed thereon 5 to move.
Audio amplifier fixed mount 18 side in orbit of audio amplifier slipper bracket 5, audio amplifier is fixed on audio amplifier fixed mount 18, and audio amplifier fixed mount both sides are provided with laser calibrator, in order to guarantee that the center of circle of circular orbit 3 aimed at by audio amplifier.
Seat 11 is arranged on turntable 8, and pedal 12, head rest 4 are installed on the seat.Seat 11 is Height Adjustable, to guarantee that head is in circular orbit 3 home position.
High scale dish 2 is arranged on the dead axle of rotating shaft 10, the dead axle that lower index dial 6 is arranged on turntable 8 does not rotate, moving axis is provided with pointer 25, reads by pointer the angle that track turns over.Be carved with scale inside circular orbit 3, audio amplifier slipper bracket 5 is equipped with pointer, the angle that audio amplifier can be indicated to streak in orbit or arc length.
Guide rail rotary chain drive sound source position regulates manned HRTF measuring circurmarotate can realize manned HRTF and measures, rotated by track and the adjustable audio amplifier of chain drive in the position in space.Seat, turntable, track, audio amplifier become one by described device, position between them is relatively fixing, effectively can solve the homocentric problem of number of people center, the track center of circle, audio amplifier sensing centre of sphere three, and adopt modularization assembling to design, except two rotating shaft needs the ceiling being fixed on measurement environment upper outside, other do not need to transform measurement environment, and turret base is installed, can use to meet different size room by lifting pedestal, achieve and little, to be applicable to the use of multiple place requirement is destroyed to place.Described device has installed the measurement mechanism that guide rail rotates and audio amplifier slides, and can read the angle of pitch of audio amplifier locus in real time, accurate positioning.Described device audio amplifier slipper bracket adopts certain length sleeve to add pulley blocks and is designed to only inclined device, ensures that the strength that chain-driving audio amplifier slides is in the tangential of circular arc all the time, solves the centripetal concerns that audio amplifier points to.Sleeve inner and circular orbit outer wall adopt accurate slide design, adopt accurate design of rolling, avoid the generation of stuck phenomenon in sleeve inner pulley and rail groove.
Claims (3)
1. guide rail rotary chain drive sound source position regulates manned HRTF measuring circurmarotate, comprise: circular orbit, audio amplifier slipper bracket, chain gearing, index dial, turntable, seat, is characterized in that: described circular orbit cross section is U-shaped, and opening is to outside circle, circular orbit half dress audio amplifier slipper bracket, half dress transmitting gear; Described audio amplifier slipper bracket is through on circular orbit by arc sleeve, sleeve inner is equipped with pulley blocks, pulley is two-wheel, two double-wheel pulleys form a pulley blocks, pulley blocks is arranged in arc sleeve, and be embedded in the U-shaped groove of circular orbit, pulley blocks and sleeve can slide along circular orbit, chain two ends are separately fixed on the common axis of pulley blocks head and the tail two pulleys; Described transmitting gear is single-wheel, and wheel shaft two ends are fixed on U-type groove wall, gear being rotatable, and chain is enclosed within the groove of circular orbit, with the gear in circular orbit and turntable top rotary table gears meshing, by pedal driven by rotating wheel chain traction audio amplifier at slide on rails; Described turntable is the coaxial turntable with upper lower shaft, upper axle is fixing on the ceiling, lower shaft is arranged in turret base, centre is connected to become entirety by circular orbit, circular orbit rotates with turntable and rotates, and described chair mounted is on turntable, and seat is ergonomic designs, pedal and head rest are housed, and liftable overlaps to make the number of people and the circular orbit center of circle; High scale dish is arranged on the dead axle of axle, the dead axle that lower index dial is arranged on the lower shaft of turret base does not rotate, the moving axis of lower shaft is provided with pointer, reads by pointer the angle that track turns over.
2. guide rail according to claim 1 rotary chain drive sound source position regulates manned HRTF measuring circurmarotate, it is characterized in that adopting sleeve to add pulley blocks forms only inclined device, makes the audio amplifier be positioned at inside circular orbit aim at the center of circle of circular orbit all the time.
3. guide rail according to claim 1 rotary chain drive sound source position regulates manned HRTF measuring circurmarotate, and it is characterized in that circular orbit radius is 1.2 meters, central angle is 360 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310616620.3A CN103631270B (en) | 2013-11-27 | 2013-11-27 | Guide rail rotary chain drive sound source position regulates manned HRTF measuring circurmarotate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310616620.3A CN103631270B (en) | 2013-11-27 | 2013-11-27 | Guide rail rotary chain drive sound source position regulates manned HRTF measuring circurmarotate |
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| CN103631270A CN103631270A (en) | 2014-03-12 |
| CN103631270B true CN103631270B (en) | 2016-01-13 |
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| CN201310616620.3A Expired - Fee Related CN103631270B (en) | 2013-11-27 | 2013-11-27 | Guide rail rotary chain drive sound source position regulates manned HRTF measuring circurmarotate |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104535038B (en) * | 2014-11-28 | 2018-12-25 | 上海航空电器有限公司 | A kind of measuring device for automatic measurement high density total space HRTF |
| CN112368767A (en) * | 2018-07-24 | 2021-02-12 | 索尼公司 | Measuring device and measuring system |
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| CN1722914A (en) * | 2004-07-09 | 2006-01-18 | 新兴系统株式会社 | Apparatus and method for producing 3d sound |
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| WO2008106680A3 (en) * | 2007-03-01 | 2008-10-16 | Jerry Mahabub | Audio spatialization and environment simulation |
| CN101483797A (en) * | 2008-01-07 | 2009-07-15 | 昊迪移通(北京)技术有限公司 | Head-related transfer function generation method and apparatus for earphone acoustic system |
| WO2010048157A1 (en) * | 2008-10-20 | 2010-04-29 | Genaudio, Inc. | Audio spatialization and environment simulation |
| CN101835072A (en) * | 2010-04-06 | 2010-09-15 | 瑞声声学科技(深圳)有限公司 | Virtual surround sound processing method |
| CN102523541A (en) * | 2011-12-07 | 2012-06-27 | 中国航空无线电电子研究所 | Rail traction type loudspeaker box position adjusting device for HRTF (Head Related Transfer Function) measurement |
-
2013
- 2013-11-27 CN CN201310616620.3A patent/CN103631270B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1722914A (en) * | 2004-07-09 | 2006-01-18 | 新兴系统株式会社 | Apparatus and method for producing 3d sound |
| WO2008106680A3 (en) * | 2007-03-01 | 2008-10-16 | Jerry Mahabub | Audio spatialization and environment simulation |
| CN101184349A (en) * | 2007-10-10 | 2008-05-21 | 昊迪移通(北京)技术有限公司 | Three-dimensional ring sound effect technique aimed at dual-track earphone equipment |
| CN101483797A (en) * | 2008-01-07 | 2009-07-15 | 昊迪移通(北京)技术有限公司 | Head-related transfer function generation method and apparatus for earphone acoustic system |
| WO2010048157A1 (en) * | 2008-10-20 | 2010-04-29 | Genaudio, Inc. | Audio spatialization and environment simulation |
| CN101835072A (en) * | 2010-04-06 | 2010-09-15 | 瑞声声学科技(深圳)有限公司 | Virtual surround sound processing method |
| CN102523541A (en) * | 2011-12-07 | 2012-06-27 | 中国航空无线电电子研究所 | Rail traction type loudspeaker box position adjusting device for HRTF (Head Related Transfer Function) measurement |
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