EP2124486A1 - Dispositif fonctionnant en dépendance d'un angle ou méthode de génerer un signal audio pseudostéréophonique - Google Patents

Dispositif fonctionnant en dépendance d'un angle ou méthode de génerer un signal audio pseudostéréophonique Download PDF

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Publication number
EP2124486A1
EP2124486A1 EP20080008832 EP08008832A EP2124486A1 EP 2124486 A1 EP2124486 A1 EP 2124486A1 EP 20080008832 EP20080008832 EP 20080008832 EP 08008832 A EP08008832 A EP 08008832A EP 2124486 A1 EP2124486 A1 EP 2124486A1
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Prior art keywords
angle
alpha
beta
signal
phi
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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EP20080008832
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German (de)
English (en)
Inventor
Clemens Par
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Storming Swiss GmbH
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Individual
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Priority to EP20080008832 priority Critical patent/EP2124486A1/fr
Priority to CN201410418770.8A priority patent/CN104301856A/zh
Priority to KR1020147002839A priority patent/KR101619203B1/ko
Priority to KR1020107027859A priority patent/KR101433235B1/ko
Priority to JP2011508825A priority patent/JP5449330B2/ja
Priority to AU2009248360A priority patent/AU2009248360B2/en
Priority to EP09745539A priority patent/EP2286602A1/fr
Priority to RU2010150762/08A priority patent/RU2513910C2/ru
Priority to PCT/EP2009/003339 priority patent/WO2009138205A1/fr
Priority to CN200980127212.3A priority patent/CN102100089B/zh
Publication of EP2124486A1 publication Critical patent/EP2124486A1/fr
Priority to US12/946,008 priority patent/US8638947B2/en
Priority to HK11108624.4A priority patent/HK1153888A1/xx
Priority to US14/100,420 priority patent/US20140098962A1/en
Priority to JP2013263292A priority patent/JP5813082B2/ja
Priority to RU2014102239/08A priority patent/RU2014102239A/ru
Priority to AU2014203511A priority patent/AU2014203511A1/en
Priority to HK15106911.6A priority patent/HK1206529A1/xx
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S5/00—Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation 

Definitions

  • the invention relates to audio signals (in particular sound transducer signals) and devices or methods for their extraction, transmission, transformation and reproduction.
  • Pseudostereophonic signals generally show deficits compared to conventional stereo signals.
  • the localizability of the sound sources such as in methods that distribute the frequency spectrum differently phase-shifted distributed on the final signals, limited.
  • the use of runtime differences also usually leads to contradictory localization for the same reasons.
  • the artificial reverberation also for psychoacoustic reasons, causes the listener to fatigue.
  • Gerzon see below
  • a pseudo-stereophony based on the simulation of intensity-stereophonic methods has the particular problem that a monophonic audio signal based on vesselserricht characteristic can not be stereophonised, this due to the non-imaging of laterally incident sound.
  • Own European application no. 06008455.5 proposes a methodical consideration of the manually or metrologically determined angle Phi, including the main axis and sound source, using time-of-flight and level differences dependent on the angle Phi. If the angle Phi is equal to zero, however, a stereophonic mapping is not possible.
  • the invention explained below is intended to represent a significant improvement in the stereophonic reproduction of a monophonic imaged sound source, taking into account the recording situation.
  • so far for intensity stereophonic simulations problematic Achtersricht characterizing a reliable method of stereophonic be offered.
  • a stereophonic image should also be made possible in the event that the angle Phi, the main axis and the sound source are equal to zero.
  • the classic S signal which is specific to the MS technique, has aft-direction characteristic, which is offset 90 degrees to the left of the M signal. If the level of the S signal is increased compared to the M signal, the so-called opening angle 2 ⁇ (which results from the intersections of the overlapping polar diagrams of the M system or S system) decreases and, like the aft direction characteristic of the S signal, Systems - always symmetrical to the main axis of the M signal is) increasingly.
  • a fictitious opening angle 2 ⁇ can also be parameterized in an arrangement or a method which takes into account the angle Phi which the main axis of the monophonic signal and the sound source include.
  • the calculated simulated side signal then depends on both the angle Phi and the half fictitious opening angle alpha.
  • gain factors are applied only to the signals that, summed, give the side signal.
  • the angle-dependent pole spacing f describing the directional characteristic of the M signals is parameterized.
  • the invention consists in the parameterization of a fictitious opening angle ⁇ + ⁇ .
  • Alpha represents here the fictitious left opening angle (lying left of the main axis of the stereophonic monophonic audio signal)
  • Beta the notional right opening angle (right of the main axis of the stereophonizing monophonic audio signal)
  • ⁇ ⁇ ⁇ the fictitious opening angle
  • the trigonometrically determined level and transit time differences for the simulated side signal in addition to Phi and f are also made dependent on the fictitious left opening angle alpha or the fictitious right opening angle beta, where - if the sound source is to be classified left of the main axis - the relationship ⁇ or - if the sound source is to be placed to the right of the main axis - the relationship ⁇ .
  • alpha and beta is in any case zero or an environment of zero, since the calculated under parametrization of alpha or beta level or time differences converge to infinity, so are not technically feasible.
  • alpha and beta By a suitable choice of alpha and beta, a stereophonic mapping of a monophonic audio signal can thus be achieved, which offers generally more favorable conditions than methods which neglect a parameterization of a fictitious aperture angle ⁇ + ⁇ .
  • a stereophonic resolution for the case of Phi equal to zero is possible.
  • Alpha and Beta can be chosen freely under the above conditions or determined accordingly by a suitable algorithm.
  • a simplification for devices or methods, which take the subject of the invention as an opportunity, is the indication that the discriminants of L (alpha) and L (beta) are used directly for the determination of P (alpha) and P (beta) to let. Circuit diagrams or algorithms are thereby significantly simplified, which means a miniaturization of the corresponding hardware with maximum efficiency.
  • FIG. 1 A sound source 101 is received at position 102 by a omnidirectional microphone, with major axis 103 and sounding axis 104 of the sound source including angle Phi (105).
  • Figures 108 and 109 illustrate the geometric positioning of those two simulated signals that, when summed, yield the simulated side signal.
  • the propagation time difference from the main signal for the simulated left signal represents 110, the level of the simulated signal is determined from the level of the main signal multiplied by the square of the distance of 101 and 112 (level correction taking into account the square of the distance decreasing sound intensity) ,
  • the transit time difference from the main signal for the simulated right signal represents 111, the level of the simulated signal is determined from the level of the main signal multiplied by the square of the distance of 101 and 113.
  • the nature of the internally processed signals FIG. 3
  • the main signal 316 is juxtaposed with two simulated signals 317 (with the delay time 310) and 318 (with the delay time 311) (where 314 represents the time axis and 315 represents the level axis).
  • the maximum level point 302 is calculated from the maximum level point 312 according to the formula (15), the maximum level point 313 according to the formula (16).
  • FIG. 4 a classic MS arrangement for half the opening angle alpha (406) equal to 135 degrees, consisting of an M system with Kidney characteristics and an S-system with Achterricht futurites.
  • FIG. 5 represents a classic MS arrangement for the half opening angle Alpha (506) equal to 90 degrees, consisting of an M-system with ball-directional characteristics and an S-system with aft-direction characteristic.
  • FIG. 6 represents a classic MS arrangement for the half opening angle Alpha (606) equal to 53 degrees, consisting of an M-system with kidney characteristics and an S-system with Achtersricht futurites.
  • FIG. 4 a classic MS arrangement for half the opening angle alpha (406) equal to 135 degrees, consisting of an M system with Kidney characteristics and an S-system with Achterricht character.
  • FIG. 5 represents a classic MS arrangement for the half opening angle Alpha (506) equal to 90 degrees, consisting of an M-system with ball-directional characteristics and an S-system with aft-direction characteristic.
  • FIG. 6 represents
  • FIG. 7 represents a classic MS arrangement for the half opening angle Alpha (706) equal to 45 degrees, consisting of an M-system with Achterricht characterizing and an S-system with Achterricht civilizing.
  • FIG. 8 represents a classic MS arrangement for half the opening angle Alpha (806) equal to 33.5 degrees, also consisting of an M-system with Achterricht characterizing and an S-system with Achterricht civilizing.
  • FIG. 9 An extension of the functional principle that is made up of FIG. 1 derives the additional consideration of a fictional half-opening angle alpha, as in FIG. 9
  • a sound source 901 is recorded by a monomicrophone 902 with a ball-shaped characteristic, with the main axis 903 and the sighting axis 904 of the sound source enclosing the angle Phi (905).
  • the fictitious half opening angle Alpha (906) is taken into account again. From this, the geometric positioning 908 of the simulated left signal S A and the geometric positioning 909 of the simulated right signal S B are directly derived (according to the principle that the distances of 902 and 908 or the distances of 902 and 909 are equal to that of FIG.
  • the transit time difference from the main signal for the simulated left signal represents 910, the level of the simulated signal is determined from the level of the main signal multiplied by the square of the distance of 901 and 912 (level correction taking into account the square of the distance decreasing sound intensity) ,
  • the transit time difference from the main signal for the simulated right signal represents 911, the level of the simulated signal is determined from the level of the main signal multiplied by the square of the distance of 901 and 913.
  • FIG. 10 which converts a monophonic audio signal into MS signals, which can be stereophonised, taking into account the fictitious half opening angle alpha.
  • a first application example of the invention based on a monophonic audio signal with omnidirectional characteristic shows FIG. 11 ,
  • a fictitious opening angle ⁇ + ⁇ is parameterized, where alpha represents the fictitious left opening angle 1106 (lying to the left of the main axis of the stereophonic monophonic audio signal), Beta the fictitious right opening angle 1107 (right of the main axis of the monophonic to stereophonizing Audio signal) - ie angles that can not occur in a classical MS arrangement due to the use of a 90 degree to the left symmetric, symmetrical to the main axis S-system with achricht characterizing.
  • the subject invention possibly leads to viewing the main axis of the monophonic audio signal to be stereophonised possibly asymmetrical fictitious aperture angle ⁇ + ⁇ .
  • the arrangement consists of a sound source 1101 received by a spherical omnidirectional monomicrophone 1102, with the microphone main axis 1103 and the sounding axis 1104 of the sound source including the angle Phi (1105). Furthermore, a fictitious left opening angle alpha is parametrized (1106) and a fictitious right opening angle beta (1107), whereby - if the sound source is to be classified left of the main axis - the relationship ⁇ or - if the sound source to the right of the main axis is to be classified - the relationship ⁇ .
  • alpha and beta zero or zero environment must be excluded in each case (since the parameterization of Alpha or beta trigonometrically calculated level or time differences converge towards infinity, so are technically not feasible).
  • Alpha now determines exactly the geometrical positioning 1108 of the simulated left signal S (alpha) (according to the principle that the distance of 1102 and 1108 must be equal to the polar distance for the angle alpha describing the directional characteristic of the main signal) and beta exactly geometric positioning 1109 of the simulated right signal S (beta) (according to the principle that the distance of 1102 and 1109 must be equal to the pole characteristic for the angle beta describing the directional characteristic of the main signal) which, when summed, give the simulated side signal.
  • the transit time difference L (alpha) versus the main signal for the simulated left signal represents 1110
  • the level P (alpha) of the simulated signal is determined from the level of the main signal multiplied by the square of the distance of 1101 and 1112 (level correction taking into account with the square of the distance decreasing sound intensity).
  • the transit time difference L (beta) against the main signal for the simulated right signal represents 1111
  • the level P (beta) of the simulated signal is determined from the level of the main signal multiplied by the square of the distance of 1101 and 1113.
  • L (alpha), L (beta) and gain factors P (alpha), P (beta) which, to allow unrestricted choice of phi, alpha and beta, result in the simulated side signal S, signals S (alpha) and S (beta) are to be applied
  • L ⁇ - 1 2 ⁇ sin ⁇ + 1 4 ⁇ sin 2 ⁇ ⁇ + 1 - sin ⁇ sin ⁇
  • the arrangement under consideration here consists of a sound source 1201 which is picked up by a cardiogram-shaped monomicrophone 1202, with the main microphone axis 1203 and the sounding axis 1204 of the sound source enclosing the angle Phi (1205). Furthermore, a fictitious left opening angle alpha is parameterized (1206) and a fictitious right opening angle beta (1207), whereby - if the sound source is to be arranged on the left of the main axis - the relation ⁇ must apply or - if the sound source to the right of the Main axis is - the relationship ⁇ .
  • zero or an environment of zero is to be excluded for alpha and beta (since the level or transit time differences calculated by parameterization of alpha or beta also converge towards infinity, ie are technically not feasible).
  • Alpha determines together with the now-directional characteristic for the main signal exactly the geometric positioning 1208 of the simulated left signal S (alpha) (according to the principle that the distance of 1202 and 1208 must be equal to the pole characteristic for the angle alpha describing the directional characteristic of the main signal) and beta also together with the directional characteristic considered here exactly the geometric positioning 1209 of the simulated right signal S (beta) (according to the principle that the distance of 1202 and 1209 must be equal to the pole spacing for the angle beta describing the directional characteristic of the main signal) which, when summed, give the simulated side signal.
  • the transit time difference L (alpha) versus the main signal for the simulated left signal represents 1210
  • the level P (alpha) of the simulated signal is determined from the level of the main signal multiplied by the square of the distance of 1201 and 1212 (level correction taking into account with the square of the distance decreasing sound intensity).
  • the transit time difference L (beta) against the main signal for the simulated right signal represents 1211
  • the level P (beta) of the simulated signal is determined from the level of the main signal multiplied by the square of the distance of 1201 and 1213.
  • the arrangement consists of a sound source 1301, which is picked up by a monomicrophone 1302 with hypercardioid polar pattern, with the microphone main axis 1303 and the sighting axis 1304 of the sound source enclosing the angle Phi (1305). Furthermore, a fictitious left opening angle alpha is parametrized (1306) and a fictitious right opening angle beta (1307), again - if the sound source is to be classified left of the main axis - the relation ⁇ must apply or - if the sound source to the right of the main axis is - the relationship ⁇ . Again, zero or an environment of zero can be excluded for alpha and beta in any case (since the levels or runtime differences calculated by parameterization of alpha or beta are trigonometrically calculated) Converge infinitely, that is technically not feasible).
  • Alpha in turn together with the hypercardioid characteristic of the main signal exactly determines the geometrical positioning 1308 of the simulated left signal S (alpha) (according to the principle that the distance of 1302 and 1108 must be equal to the pole distance for the angle alpha describing the directional characteristic of the main signal ), Beta together with the hypercardioid characteristic exactly the geometrical positioning 1309 of the simulated left signal S (beta) (according to the principle that the distance of 1302 and 1309 must be equal to the pole distance for the angle beta describing the directional characteristic of the main signal), which adds up to the simulated page signal.
  • the transit time difference L (alpha) versus the main signal for the simulated left signal represents 1310
  • the level P (alpha) of the simulated signal is determined from the level of the main signal multiplied by the square of the distance of 1301 and 1312 (level correction taking into account with the square of the distance decreasing sound intensity).
  • the transit time difference L (beta) against the main signal for the simulated right signal represents 1311
  • the level P (beta) of the simulated signal is determined from the level of the main signal multiplied by the square of the distance of 1301 and 1313.
  • the input signal to be stereophonised has special forms of the cardioid characteristic
  • the corresponding transit time differences L (alpha) and L (beta) or amplification factors P (alpha) and P (beta) from the formulas (29) to (32) can be easily calculated. 0 ⁇ n ⁇ 2: this is true for n.
  • n 1
  • the gain factors or propagation time differences result for an input signal with a classical refractive index characteristic, for the value 0 those for an input signal with a ball-shaped characteristic, for the value 2 those for an input signal with a conventional aftereffect characteristic. If n is 1.25, the propagation time differences or gain factors for a supercardioid input signal result.
  • FIG. 14 illustrates in detail the application for an input signal with Achrichtricht characterizing, which has already been discussed several times above.
  • the arrangement consists of a sound source 1401, which is recorded by a monomicrophone 1402 with civilerricht characterizing, the main microphone axis 1403 and the bearing axis 1404 of the sound source the Include angle Phi (1405).
  • a fictitious left opening angle alpha is parametrised (1406) and a fictitious right opening angle beta (1407), whereby - if the sound source is to be arranged on the left of the main axis - the relation ⁇ must apply or - if the sound source is to the right of the main axis is to be classified - the relationship ⁇ .
  • zero or an environment of zero is to be excluded in any case for alpha and beta (since the levels or time differences calculated trigonometrically under parameterization of alpha or beta also converge towards infinity, ie are technically not feasible).
  • Alpha together with the Stammerricht characterizing the main signal exactly the geometric positioning 1408 of the simulated left signal S (alpha) (according to the principle that the distance of 1402 and 1408 must be equal to the, the directional characteristic of the main signal, pole distance for the angle alpha) Beta together with the Achtersricht characterizing exactly the geometric positioning 1409 of the simulated right signal S (beta) (according to the principle that the distance of 1402 and 1409 must be equal to the directional characteristic of the main signal, pole distance for the angle beta), which sums up the simulated page signal.
  • the Run-time difference L (alpha) versus the main signal for the simulated left signal represents 1410, the level P (alpha) of the simulated signal is determined from the level of the main signal multiplied by the square of the distance of 1401 and 1412 (level correction in consideration of FIG the square of the distance decreasing sound intensity).
  • the transit time difference L (beta) against the main signal for the simulated right signal represents 1411, the level P (beta) of the simulated signal is determined from the level of the main signal multiplied by the square of the distance of 1401 and 1413.
  • the associated formula apparatus for The delay times L (alpha), L (beta) and the gain factors P (alpha), P (beta) can be found in equations (7) to (10), or equations (29) to (32), if n equals 2 (the gains - to allow unrestricted choice of Phi, Alpha, and Beta with respect to the directional characteristic - apply to the simulated side signal S, S (alpha) and S (beta) signals) ,
  • FIG. 15 represents a, the directional characteristic of the input signal generalized circuit according to the subject invention, taking into account the acceptance angle Phi, a left fictitious opening angle alpha, a right fictitious ⁇ ffungswinkels beta and the directional characteristic of the M signal descriptive angle-dependent pole spacing f a monophonic audio signal in MS signals that can be stereophonized.
  • the formulas (3) to (6) are to be used.
  • the input signal is used directly as an M signal.
  • the S signal is added from the one around the Delay time L (alpha) delayed input signal, which is subsequently amplified by the amplification factor P (alpha), and another signal representing the delayed by the delay time L (beta) input signal, then amplified by the gain P (beta).
  • P the delay time
  • FIG. 16 a slightly restricted circuit of the form can be used FIG. 16 derived.
  • the restriction consists in the condition that for the acceptance angle Phi, the left fictitious aperture angle alpha and the angle-dependent pole distance f describing the directional characteristic of the M signal, the expression f 2 ⁇ 4 ⁇ sin 2 ⁇ ⁇ + f 2 ⁇ - f ⁇ sin ⁇ * f ⁇ * sin ⁇ not equal to zero or element of a zero environment.
  • FIG. 15 A second derivative FIG. 15 if the reweighting of the gain factors is changed, a circuit which also operates in a slightly restricted manner results in the shape FIG. 17 , wherein for the acceptance angle Phi, the right fictitious aperture angle beta and the, the directional characteristic of the M signal descriptive angle-dependent pole distance f must apply that the expression f 2 ⁇ 4 ⁇ sin 2 ⁇ ⁇ + f 2 ⁇ + f ⁇ sin ⁇ * f ⁇ * sin ⁇ not equal to zero or element of a zero environment.
  • ⁇ if ⁇ 0 - the relation ⁇ , or - if ⁇ 0 - the relation ⁇ .
  • zero or an environment of zero must be excluded for each alpha or beta (since the levels or runtime differences calculated trigonometrically under parameterization of alpha or beta
  • a monophonic input signal can be obtained with the aid of a coordinate system of the form FIG. 18 arithmetically, where 1814 is the time axis, and 1815 the level axis. 1819 represents the time t i , 1820 the level point P i (t i ) which correlates with t i . For sufficiently small intervals [ t i , t i +1 ], ie a sufficient sampling rate, the sound event can now be mapped with sufficient accuracy.
  • FIG. 4 illustrates the associated flow chart of a method according to the subject invention, taking into account the pickup angle Phi, a left fictitious opening angle alpha, a right fictitious opening angle beta and one, the Directional characteristic of the M-signal descriptive angle-dependent pole spacing f at sufficiently small intervals [ t i , t i +1 ] a monophonic audio signal into MS signals that can be stereophonized.
  • An M-signal (of the array [ M i ( t i )]) and an S-signal (of the array [ S i ( t i )]) which is in fact calculated from the input signal delayed by the delay time L (alpha) are calculated , which is subsequently amplified by the amplification factor P (alpha), and a further signal which represents the input signal which is actually delayed by the delay time L (beta), and then amplified by the amplification factor P (beta).
  • the algorithm excludes inadmissible values of alpha and beta. Again - if ⁇ 0 - the relation ⁇ or - if ⁇ 0 - the relation ⁇ . Likewise, zero or an environment of zero must be excluded for alpha or beta in any case (since the levels or time differences calculated trigonometrically under parameterization of alpha or beta converge towards infinity, ie are technically not feasible).
  • Method 1 Provided that the algorithm (33) does not equal zero or an element of a zero environment, a monophonic input signal can be provided for sufficiently small ones Intervals [ t i , t i +1 ] FIG. 19 analogous calculation method based on FIG. 16 however, now the M signal (the array [ M i ( t i )]) appears to be amplified by the factor (34).
  • the S signal (the array [ S i ( t i )]) represents the result of the addition of the input signal (the array [ P i ( t i )] actually delayed by the delay time L (alpha) (see formula (3)).
  • Method 2 If it remains algoritmically ensured that (36) is not equal to zero or an element of an environment of zero, a monophonic input signal for sufficiently small intervals [ t i , t i +1 ] can also be added FIG. 19 analogous calculation method in £ based on FIG. 17 now the M-signal (the array [ M i ( t i )]) appears to be amplified by the factor (37).
  • the S signal (of the array [ S i ( t i )]) represents the result of the addition of the actual delayed by the delay time L (alpha) (see formula (3)) and then by the gain P (alpha) '(see Formula (38) of amplified input signal (the array [ P i ( t i )]) with the input signal actually delayed by the delay time L (Beta) (see formula (4) (again the Array [ P i ( t i )]).
  • the algorithm must exclude impermissible values of alpha and beta: If ⁇ 0, the relation ⁇ must apply or - if ⁇ 0 - the relation ⁇ . In the same way, zero or an environment of zero can be excluded for alpha and beta in any case (since the levels or runtime differences calculated trigonometrically under parameterization of alpha or beta sometimes converge towards infinity, ie remain technically unrealizable).
  • a similar procedure can be used for monophonic sound recordings in which a single sound source is to be stereophonically reproduced or one sound source monophonic and another stereophone (this is possible if the angle Phi equals zero for a sound source).
  • the imaging direction of a signal source insulated sound source within a stereo image is perceived as being too sharp, the imaging direction can be gradually dispersed using the subject invention.
  • the shaping of the directional characteristic of the input signal (selectively possible by varying the polar coordinates describing the directional characteristic of the input signal, comprising, for example, the application of comb filters in connection with Fast Fourier Transformation (FFT) based methods, which belongs to the prior art) Going through an arrangement or a method according to the subject invention may possibly improve the result or to provide for a normalization of the directional characteristic of the input signal.
  • FFT Fast Fourier Transformation

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Stereophonic System (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Stereophonic Arrangements (AREA)
EP20080008832 2008-05-13 2008-05-13 Dispositif fonctionnant en dépendance d'un angle ou méthode de génerer un signal audio pseudostéréophonique Withdrawn EP2124486A1 (fr)

Priority Applications (17)

Application Number Priority Date Filing Date Title
EP20080008832 EP2124486A1 (fr) 2008-05-13 2008-05-13 Dispositif fonctionnant en dépendance d'un angle ou méthode de génerer un signal audio pseudostéréophonique
PCT/EP2009/003339 WO2009138205A1 (fr) 2008-05-13 2009-05-12 Dispositif dont le fonctionnement dépend de l'angle ou méthode d'acquisition d'un signal audio pseudo-stéréophonique
CN200980127212.3A CN102100089B (zh) 2008-05-13 2009-05-12 根据角度工作的装置和获得伪立体声音频信号的方法
KR1020147002839A KR101619203B1 (ko) 2008-05-13 2009-05-12 각도 의존적으로 작동하는 장치 또는 의사-스테레오포닉 오디오 신호를 얻는 방법
KR1020107027859A KR101433235B1 (ko) 2008-05-13 2009-05-12 각도 의존적으로 작동하는 장치 또는 의사-스테레오포닉 오디오 신호를 얻는 방법
JP2011508825A JP5449330B2 (ja) 2008-05-13 2009-05-12 擬似立体音響オーディオ信号を取得するための角度依存動作装置または方法
AU2009248360A AU2009248360B2 (en) 2008-05-13 2009-05-12 Angle-dependent operating device or method for obtaining a pseudo-stereophonic audio signal
EP09745539A EP2286602A1 (fr) 2008-05-13 2009-05-12 Dispositif dont le fonctionnement dépend de l'angle ou méthode d'acquisition d'un signal audio pseudo-stéréophonique
RU2010150762/08A RU2513910C2 (ru) 2008-05-13 2009-05-12 Работающее в зависимости от угла устройство или способ получения псевдостереофонического аудиосигнала
CN201410418770.8A CN104301856A (zh) 2008-05-13 2009-05-12 用于对单信号进行立体声化的装置和方法
US12/946,008 US8638947B2 (en) 2008-05-13 2010-11-15 Angle-dependent operating device or method for generating a pseudo-stereophonic audio signal
HK11108624.4A HK1153888A1 (en) 2008-05-13 2011-08-16 Angle-dependent operating device or method for obtaining a pseudo- stereophonic audio signal
US14/100,420 US20140098962A1 (en) 2008-05-13 2013-12-09 Angle-dependent operating device or method for generating a pseudo-stereophonic audio signal
JP2013263292A JP5813082B2 (ja) 2008-05-13 2013-12-20 モノラル信号を立体音響化するための装置及び方法
RU2014102239/08A RU2014102239A (ru) 2008-05-13 2014-01-23 Работающее в зависимости от угла устройство или способ получения псевдостереофонического аудиосигнала
AU2014203511A AU2014203511A1 (en) 2008-05-13 2014-06-27 Angle-dependent operating device or method for obtaining a pseudo-stereophonic audio signal
HK15106911.6A HK1206529A1 (en) 2008-05-13 2015-07-21 Apparatus and method for stereophonizing a mono signal

Applications Claiming Priority (1)

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EP20080008832 EP2124486A1 (fr) 2008-05-13 2008-05-13 Dispositif fonctionnant en dépendance d'un angle ou méthode de génerer un signal audio pseudostéréophonique

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WO2012016992A2 (fr) 2010-08-03 2012-02-09 Stormingswiss Gmbh Dispositif et procédé d'évaluation et d'optimisation de signaux sur la base d'invariantes algébriques
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WO2009138205A1 (fr) 2009-11-19
US20110075850A1 (en) 2011-03-31
RU2513910C2 (ru) 2014-04-20
JP5449330B2 (ja) 2014-03-19
JP2011521551A (ja) 2011-07-21
AU2009248360A1 (en) 2009-11-19
CN104301856A (zh) 2015-01-21
KR101619203B1 (ko) 2016-05-11
RU2010150762A (ru) 2012-06-20
CN102100089B (zh) 2014-10-01
JP2014090470A (ja) 2014-05-15
US20140098962A1 (en) 2014-04-10
HK1153888A1 (en) 2012-04-05
KR101433235B1 (ko) 2014-08-22
RU2014102239A (ru) 2015-07-27
KR20110022595A (ko) 2011-03-07
US8638947B2 (en) 2014-01-28
EP2286602A1 (fr) 2011-02-23
AU2014203511A1 (en) 2014-07-17
CN102100089A (zh) 2011-06-15
JP5813082B2 (ja) 2015-11-17

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