CN1264264A - Method for generating space sound signals by recording sound waves before ear - Google Patents

Method for generating space sound signals by recording sound waves before ear Download PDF

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CN1264264A
CN1264264A CN 00100817 CN00100817A CN1264264A CN 1264264 A CN1264264 A CN 1264264A CN 00100817 CN00100817 CN 00100817 CN 00100817 A CN00100817 A CN 00100817A CN 1264264 A CN1264264 A CN 1264264A
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sound
people
ear
ears
spatial
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CN1144224C (en
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胡国华
胡镔
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王幼庚
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Abstract

A method for generating space sound signal by recording sound waves before ear features that a special bionic space sound recorder is used to record the wave front of space sound reaching human ears at same time, then dual-earphone is used to reproduce it, and the reproduced sound waves before ears are transferred into internal ear to obtain space perception of space sound. With said method, round sound effect of complete round sound system can be obtained only by the round-sound optical disk.

Description

The method of generating space sound signals by recording sound waves before ear
The invention belongs to the method for the method of a kind of audio record and reproduction, particularly generating space sound signals by recording sound waves before ear.
In modern sound technique, for trying to achieve validity and the three dimensional depth that sound equipment reappears, technology such as stereo, surround sound have been developed, typical DVD CD etc. with the Dolby Surround acoustical signal, be four tunnel signal encodings are deposited in about in two sound channels, from two sound channels, decode again during broadcast and isolate four road signals, send into the audio amplifier sounding respectively.A kind of playback form of standard, by left front, right front, in preceding, left back, right back five audio amplifier playbacks, the people listens to surrounding sound in the middle of being sitting in.This playback needs fixed place, and comparatively large-scale equipment and restriction hearer are in fixing position.In public, in order not influence others, and wear the earphone audition, Germany Sen Haisaier company has designed the playback transducer that is called Lucas (LUCAS) in recent years, surround sound signal to acoustic image source goods encoding process such as DVD, VCD is decoded, and tries to achieve three-dimensional degree with the position phase method of delay and coordination arrival ears sound wave.And and then consider people's head transfer functions, the transfer functions that auricle, earhole difference cause etc. with the correcting circuit of complexity, allow people's ear hear the sound true to nature with the method for adjustment playback system.In addition, in the biphone playback, developed the SRS processor that is placed in the earphone.But to so far, the common fault of all these methods is to solve real three dimensional stress.So-called " stereo ", only allow the sound between two playback loudspeaker of people's feeling space change, so-called " surround sound ", only allow people in the middle of being sitting in experience the sound conversion that five loudspeaker around his send around him, promptly the sound only occurs on the ring in people's ears and the plane that loudspeaker are formed.For the biphone playback, the spatial depth sense is littler, though to making correction through the latter made transfer function of a large amount of statistics, still have the problem that varies with each individual.Because people's judgment, sound distortion is to a certain degree still distinguishable, but is a great problem for the direction of sound source and the reproduction of distance.
The method that the purpose of this invention is to provide a kind of generating space sound signals by recording sound waves before ear, the audio and video products that this method is recorded can reproduce the sound with full three dimensions sense, can be free and easily by individual audition, and with low cost.
Above-mentioned purpose of the present invention is realized by following technical proposals.
A kind of method of generating space sound signals by recording sound waves before ear, it is characterized in that: with a special-purpose bionical spatial sound phonographic recorder, the record synchronization space sound arrives the acoustic wavefront of people's ears, then reproduce with the earphone playback on people's ears limit, sound wave imports people's inner ear sense of hearing combination into before the ear that is reappeared, thereby obtains having the spatial sound of spatial impression.
Except that above-mentioned essential features, in implementation process, also can replenish following technology contents:
The bionical spatial sound phonographic recorder of said special use is made up of pick-up, preamplifier, recorder etc., and wherein this pick-up is installed in the ears earhole position, the left and right sides of a bionical number of people, and pick-up connects recorder by preamplifier.
The invention has the advantages that: the sound wave sound that the audio and video products of recording with method of the present invention can reproduce is true to nature and full three dimensions sense arranged, can be very free and easily by individual audition; The surround sound audio visual effect same can not only be obtained, the full three dimensions sense of more great depth sense can also be obtained having with the playback of former surround sound playback system; Can allow that the people discerns the sound equipment kind, judge voice directions and position.
The invention will be further described below in conjunction with drawings and Examples:
Description of drawings:
Fig. 1 is that the sound wave of a certain sound source in space passes to the perceived situation of people's ear.
Fig. 2 is that sound wave reproduces with the head of earphone in the people before the ear that is write down, and makes the people discern the sound equipment kind, judges the schematic diagram of voice directions and position.
Fig. 3 is the schematic diagram of the used bionical spatial sound phonographic recorder of the present invention.
Fig. 4 is the schematic diagram that the present invention is used for surround sound is transcribed into the embodiment of spatial sound.
As shown in Figure 1, the sound that a bit send in the space, in air, propagate with the sound wave form, when the ears that pass to the people, owing to ears have different separately amplitudes and position mutually with respect to the difference of the distance of sound source and direction, this sound wave forms comprehensive fluctuation through reflection, refraction, interference, diffraction, the conduction of auricle, duct again, and the vibration ear-drum reaches the brain auditory center.Through impression many times, the people has set up his own cognition to this a kind of sound wave, knows his kind, its orientation.To the preceding sound wave of intelligent's ear, mainly decided with people itself irrelevant by external environments such as former sounding point and air.The process inner ear arrives the vibration of ear-drum, then need pay to add auricle, duct, the caused various harmonic waves of conduction, varies with each individual fully.
Therefore, if bypass the harmonic wave factor that varies with each individual, record the acoustic wavefront of intelligent's ears, reappear this sound wave again on people's ears limit, concerning this people, the sound wave and the former sound wave that reappear there is no too big-difference, though still need add outer auricle reflection and vibrate paying of causing and add factor, but oneself does not have too big difference to the cognitive original sound of this people, not only aspect the sound equipment kind, and especially aspect the three dimensions sense, even can very accurately not reduce at the sound equipment initial point, also reduced fully among the space, its site error is difficult to shown in the perception (as Fig. 2).
The bionical spatial sound phonographic recorder of Fig. 3 is according to sound wave record before the above-mentioned ear and heavily sees principle and create.Among Fig. 3, bionical spatial sound phonographic recorder is provided with a bionical number of people 1, and this bionical number of people 1 has the outer auricle 2 of ears, is provided with pick- up 3,4 in ears earhole position, the left and right sides, and this pick- up 3,4 connects recorder 8 by preamplifier 6,7.The outer auricle 2 of the ears of the bionical number of people 1 is to be made by the acoustical behavior elastic soft plastic similar to people's ear; Filling acoustic material 5 in the bionical number of people 1.
Fig. 4 is a kind of concrete Application Example of the present invention, in the time the surround sound signal of DVD need being transcribed into biphone spatial sound signal, then the DVD CD is placed DVD shadow dish machine 10, its surround sound signal is decoded to be divided into four the tunnel, insert five audio amplifiers respectively, center-channel speaker 11, right front 12, left front 13, left back 14, right back 15 is placed bionical spatial sound phonographic recorder 16 in audiovisual position, center, does the secondary recording.Dual track spatial sound CD after recording, tape or other sound equipment carriers, promptly become the goods of the spatial sound signal that the surround sound CD is converted to method of the present invention, it is by the earphone playback of cassette player to the ears limit, can obtain original surrounding sound effect, its spatial depth distance perspective etc. all when recording spatial sound the surround sound spatial impression that the position determined of audio amplifier identical.
The goods that the present invention produces can be widely used in individual audition under the public place, birdman's audition, and what electronic game machine cooperated with scene dubs, and the individual plays with dual track in the radio and television the appreciation of music, sound works.

Claims (2)

1, a kind of method of generating space sound signals by recording sound waves before ear, it is characterized in that: with a special-purpose bionical spatial sound phonographic recorder, the analog record synchronization space sound arrives the acoustic wavefront of people's ears, then reproduce with the earphone playback on people's ears limit, sound wave imports people's inner ear sense of hearing combination into before the ear that is reappeared, thereby obtains having the spatial sound of spatial impression.
2, as the method for the said generating space sound signals by recording sound waves before ear of claim 1, it is characterized in that: special-purpose bionical spatial sound phonographic recorder, form by pick-up, preamplifier, recorder etc., wherein this pick-up is installed in the ears earhole position, the left and right sides of a bionical number of people, and pick-up connects recorder by preamplifier.
CNB00100817XA 2000-02-14 2000-02-14 Method for generating space sound signals by recording sound waves before ear Expired - Lifetime CN1144224C (en)

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CNB00100817XA CN1144224C (en) 2000-02-14 2000-02-14 Method for generating space sound signals by recording sound waves before ear

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CN1144224C CN1144224C (en) 2004-03-31

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102804264A (en) * 2010-01-15 2012-11-28 弗兰霍菲尔运输应用研究公司 Apparatus and method for extracting a direct/ambience signal from a downmix signal and spatial parametric information
CN103987002A (en) * 2013-03-23 2014-08-13 卫晟 Holographic recording technology
CN110622526A (en) * 2017-05-11 2019-12-27 微软技术许可有限责任公司 Articulating computing device for binaural recording

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102804264A (en) * 2010-01-15 2012-11-28 弗兰霍菲尔运输应用研究公司 Apparatus and method for extracting a direct/ambience signal from a downmix signal and spatial parametric information
US9093063B2 (en) 2010-01-15 2015-07-28 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Apparatus and method for extracting a direct/ambience signal from a downmix signal and spatial parametric information
CN102804264B (en) * 2010-01-15 2016-03-09 弗劳恩霍夫应用研究促进协会 For from lower mixed signal and spatial parameter information extraction directly/device and method of ambient signals
CN103987002A (en) * 2013-03-23 2014-08-13 卫晟 Holographic recording technology
CN110622526A (en) * 2017-05-11 2019-12-27 微软技术许可有限责任公司 Articulating computing device for binaural recording
CN110622526B (en) * 2017-05-11 2021-03-30 微软技术许可有限责任公司 Articulating computing device for binaural recording

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