EP1401243B1 - Méthode pour l'optimisation d'un signal audio - Google Patents

Méthode pour l'optimisation d'un signal audio Download PDF

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Publication number
EP1401243B1
EP1401243B1 EP02021050A EP02021050A EP1401243B1 EP 1401243 B1 EP1401243 B1 EP 1401243B1 EP 02021050 A EP02021050 A EP 02021050A EP 02021050 A EP02021050 A EP 02021050A EP 1401243 B1 EP1401243 B1 EP 1401243B1
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EP
European Patent Office
Prior art keywords
audio signal
signal
difference
modified
microphone
Prior art date
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.)
Expired - Lifetime
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EP02021050A
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German (de)
English (en)
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EP1401243A1 (fr
Inventor
Thomas Wager
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Individual
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Individual
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Priority to EP02021050A priority Critical patent/EP1401243B1/fr
Priority to DE50205207T priority patent/DE50205207D1/de
Priority to AT02021050T priority patent/ATE312498T1/de
Priority to PCT/EP2003/010119 priority patent/WO2004030409A2/fr
Priority to AU2003270179A priority patent/AU2003270179A1/en
Publication of EP1401243A1 publication Critical patent/EP1401243A1/fr
Application granted granted Critical
Publication of EP1401243B1 publication Critical patent/EP1401243B1/fr
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S1/00—Two-channel systems
    • H04S1/007—Two-channel systems in which the audio signals are in digital form

Definitions

  • the invention relates to a method for optimizing an audio signal.
  • FIG. 1 shows a schematic representation of the transmission of an audio signal from a signal source 1 in a sound space 5 according to the prior art.
  • the audio signal can optionally be replaced by a device 2 (for example, an equalizer or a controller) to thereby be modified to reduce disturbing changes.
  • the signal will light up Amplifier 3 and passes to a speaker 4, in which the electromagnetic Signal is converted into sound waves.
  • a consideration of the geometry the sound space 5 is not provided.
  • a major disadvantage of the known from the prior art and methods Devices is that the optimization or compensation of modified Audio signals only with respect to individual transmission components and / or individual modification types of the audio signal are performed.
  • Another Disadvantage of the prior art is that a compensation or optimization of the audio signal once, i. usually at the beginning of the audio signal transmission, is carried out. Occur during transmission changes on, be it the electronic components, be it the sonicated room (for example by changing the number of people therein), this can not considered. It is therefore the object of the present invention to overcome the mentioned disadvantages of the prior art and a method for optimizing an audio signal with which in particular a Variety of modifications of the audio signal even during the course of a Audio transmission can be compensated and optimized.
  • This method thus allows modifications of an audio signal, too may occur later during an audio transmission, continuously optimize or to compensate.
  • the inventive method is also not limited to optimizing an audio signal for particular audio components; The process can be independent of the components used to achieve an optimization.
  • the optimization not on individual frequency ranges, For example, the low frequency range is limited.
  • the method of the invention may comprise the step of converting an analog signal into a digital signal or a digital signal in include an analog signal. So if, for example, an audio signal in analog Is present, it can be digitized to provide a simple way of doing so To allow analysis in the frequency domain.
  • the (analog or digital) audio signal which corresponds in particular to the original signal, as a reference signal for the modified audio signal is used to provide an optimized audio signal to obtain.
  • determining the difference of a predetermined Audio signal and a modified audio signal performed in real time.
  • the audio signal or can temporal sections of the audio signal are stored so that the difference a predetermined stored audio signal and a modified audio signal is determined.
  • step a) of the method can be the step deciding whether the difference is in the time domain and / or in the frequency domain is determined include. For example, if the predetermined audio signal is such has been modified that the modification in a simple way from the difference in Time range is recognizable, can - in particular to save computing time - decided Be that transforming the signals into the frequency domain should not be performed. In this case, the optimized audio signal can only be determined using the difference in the time domain.
  • a transformation from the time domain to the frequency domain or vice versa can be carried out by known standard methods, for example with Help of a Fourier transformation. According to an advantageous alternative can also a wavelet transformation is performed.
  • Step a) comprising the step of: determining the frequency spectrum of the predetermined one Audio signal and the modified audio signal.
  • Step a) the step: scaling the predetermined audio signal and / or the modified audio signal in the time domain and / or in the frequency domain. Consequently for example, an amplified modified audio signal may be added to the amplitude of the predetermined audio signal, whereby a comparison of the signals or determining the difference between the predetermined audio signal and the modified one Audio signal is simplified.
  • Step b) the step of: adding the frequency spectrum of the predetermined one Audio signal and the difference spectrum from the frequency spectra of the predetermined Audio signal and the modified audio signal.
  • the difference spectrum is thus determined so that it has the appropriate sign.
  • the addition of the difference spectrum thus become frequencies or frequency ranges of the modified audio signal resulting from the predetermined audio signal For example, differ in amplitude, compensated, resulting in an optimized Audio signal results. Due to such optimization, the optimized Audio signal after the transmission as closely as possible to the predetermined audio signal.
  • Step b) may comprise the step of: deciding on optimizing the Audio signal. For example, from an analysis of the difference of a predetermined Audio signal and modified audio signal result in a change the audio signal no further optimization or meaningful optimization more results. Such a case may arise if an audio component operated outside of its specification. For example, a tolerance range for the difference between audio signal and modified audio signal be performed, within which a change of the audio signal shall be. Outside the tolerance range is preferable to unnecessary calculations to avoid any change in the audio signal made.
  • the modified audio signal with At least one microphone, in particular, the influences of space, in the at least one microphone is located, takes into account the audio signal. Due to the continuous operation of the method can therefore be guaranteed be that changes in the sound space, for example, by changes in the Number of persons in the room, immediately in the optimization of the audio signal be taken into account.
  • the at least one microphone is placed so that the audio signal recorded by the at least one microphone corresponds to the audio signal received by a potential listener in the room would.
  • all the methods described above can be the step of Include surveying.
  • the characteristics the transmission path determined and in particular also stored become. These characteristics can then be used in the optimization of the audio signal be taken into account. If a modified audio signal by at least one Microphone can be recorded in the Einmessvorgang also the characteristics of the at least one microphone.
  • individual characteristics of the transmission path or the at least one microphone is stored without its own calibration process, for example, by assuming predetermined characteristic curves. The save The characteristics mentioned thus make it possible to carry out the method regardless of the type and / or arrangement of the components used.
  • the first modified audio signal in electromagnetic form for example by after the amplifier is tapped, and a second modified Audio signal in the form of sound waves present, recorded via a microphone become.
  • a separation is particularly advantageous if to accept is that the modification of the electromagnetic waves in essence is constant in time, while the sound waves are changing due to changing Ambient conditions are modified over time varying.
  • the device may further devices for carrying out the above-described developments of the invention Have method.
  • the device may advantageously comprise means for deciding have an optimization of the audio signal.
  • the invention also provides a computer program product which directly can be loaded into the main memory of a digital computer and Command code sections comprising the steps of all previously described Procedures are executed when the computer program product on a Computer is running.
  • the invention also provides a computer program product based on a computer readable medium is stored and computer readable program means includes, which performs the steps of all previously described methods when the computer program product is running on a computer.
  • a device 7 is arranged between signal source 1 and loudspeaker 4, to optimize the audio signal.
  • the optimization device 7 arranged as close to the signal source 1, so that thereby the influences subsequent audio components, such as an amplifier 3, can be compensated.
  • the signal is tapped after the amplifier 3 and via the signal path. 8 led to the optimization device 7; on the other hand, the modified signal Also recorded on a arranged in the sound space 5 microphone 6 and returned to the optimization device 7 via the signal path 9.
  • the modified audio signal with that of the Signal source 1 coming original signal or reference signal compared, from which an optimized audio signal is determined.
  • Such a feedback of the modified Audio signal can be made at any point in the transmission path. All in all is assumed in each case that the original signal or the reference signal the actual signal desired for propagation in the sound space 5 is.
  • the original signal can therefore also be an already pre-processed electronically Signal (e.g., by psychoacoustic effectors).
  • the two feedback paths (from the amplifier output or the sound chamber) Depending on the requirements and technical equipment, they may also be available individually be. By using both feedback paths, however, one can better result can be achieved.
  • a calibration procedure is performed to determine the characteristics to determine the audio transmission component.
  • This process is to ensure that all components along the transmission path and in the sound room their final state in electrical and acoustic Respects have taken and the amplifier to the maximum expected Gain is set.
  • the microphone characteristic should be predetermined.
  • the characteristic of an unknown Microphones are determined. So if the overall system has not been calibrated yet is, for example, externally generated characteristics of the microphone can be stored become.
  • An alternative is to use a microphone theoretical editor or from an existing data sheet transferred to. The microphone characteristics are stored, preferably in the optimization device 7.
  • the predetermined input signals are also used to determine static optimization quantities used for the signal to the input of the amplifier 3. It these are in particular limits for loudspeaker and amplifier input signals, the signal delay u.s.w. as well as a static amplifier difference spectrum and a static microphone difference spectrum, as in the following is explained in detail.
  • the original signal is using the during the calibration process modified static data (transmission characteristics) modified. If the output signal generated by this modified original signal deviates, i.e. at the microphone and / or amplifier output, still from the original signal, Further dynamic corrections are performed. These corrections or Compensations are continuously determined and adjusted.
  • the detected output signals can be both in the time and in the frequency domain be analyzed as deviations from the original signal. Occur deviations to the original signal, as they are in particular from the difference signal or the difference spectrum, the signal is transmitted by the optimization device 7 modified to the input of the amplifier 3 such that the in Sound space reproduced signal the greatest possible agreement with the Original signal has.
  • signal anomalies in the time domain e.g., clipping or other distortions
  • in the frequency domain e.g., selective Amplification or attenuation of individual frequency ranges by echo, Interference, beating or the like
  • appropriate measures e.g. Amplitude, selective increase or attenuation of individual frequency ranges or similar
  • a special effect can occur if extraneous noise, such as environmental noise, exist in the sound space and the frequency spectrum of the extraneous noise in sufficient Scope is present in the original signal.
  • extraneous noise such as environmental noise
  • the frequency spectrum of the extraneous noise in sufficient Scope is present in the original signal.
  • an extensive Reduction or extinction of the external noise by appropriate Compensation achieved in the signal emitted by the speaker in the sound space become.
  • the microphone is suitably positioned in the sound space, so that in particular none unspecific for the sound space Foreign noises occur at the location of the microphone.
  • the microphone can use multiple microphones be positioned at different locations of the sound space.
  • Analog input signals are initially digitized and digitally present output signals are converted into analogue. According to sampling theorem is used for signal conversion of a sampling rate, at least twice as high as the maximum frequency to be processed in the Input signal is.
  • FIG. 3 An overview of the signal processing according to the embodiment is in Figure 3 shown.
  • the signal processing shown in Figure 3 takes place completely in the optimization device 7 instead.
  • the original signal can be either analog or digital.
  • the optimization device 7 may be appropriate depending on the type of expected source signal be configured. If it is an analog source signal, it will first digitized in an A / D converter. There is now a digital audio signal before, which assumes the function of a reference signal. This reference signal is processed, that is, the signal is Fourier transformed from the time domain converted into the frequency domain, so that both a reference signal and a Reference spectrum is available.
  • FIG. 5 is an exemplary illustration of the analysis of the signal from the amplifier output to see.
  • Signal paths 10 and 10 are used in determining the to be stored amplifier characteristics used.
  • the optimization process is the digitized and normalized signal from the amplifier output taking into account the determined during the Einmessvorgangs and stored amplifier characteristics in the time domain with the reference signal and amplifier typical signal anomalies (eg clipping and others) Distortions).
  • an amplifier difference spectrum is generated which is used in further processing leads to a reduction of the amplitude at the amplifier input.
  • the difference spectrum is done by subtracting the considered spectrum (from the amplifier output) determined by the reference spectrum. This amplifier difference spectrum represents the deviations at the amplifier output relative to the reference spectrum available. If there is no signal at the amplifier output, the amplifier difference spectrum by applying during the Einmessvorgangs ascertained amplifier characteristics to the reference spectrum (static operation).
  • FIG. 1 One analog microphone signal is first digitized (see Figure 3). By Fourier transformation then the signal from the time domain to the frequency domain transferred. Taking into account the microphone characteristic, the frequency spectrum becomes calculated, which is currently present in the sound room. Again, there is a scaling or normalization to the amplitude of the reference signal instead of, in the ideal case to calculate linear amplification. This is done in the same way as before written case of the amplifier signal cyclically determines the current gain. When using multiple microphones, this will be signal conditioning for each Microphone performed and then an average formed. Alternatively, you can a weighted averaging is done to different weights of the different microphone locations with respect to the local sound optimization. This is then a normalized frequency spectrum from the microphone to Available.
  • the analysis of the microphone signal is shown schematically in FIG.
  • the normalized signal from the microphone is taken into account during the the calibration process determined characteristics of the loudspeaker-sound-space combination compared in the time domain with the reference signal and also for this Transmission segment typical signal anomalies (e.g. and other distortions).
  • the frequency spectrum for the amplifier input exclusively by adding the amplifier difference spectrum and of the reference spectrum. So in this case, there really is no analysis of the signal from the microphone. In this embodiment So it is decided, in which case an analysis of the signal from the microphone actually is carried out.
  • a difference spectrum will be created determined by subtracting the spectrum under consideration from the reference spectrum.
  • This microphone difference spectrum represents the deviations on the microphone are present based on the reference spectrum. There is no signal from the microphone On, the microphone difference spectrum is determined solely by using the the Einmessvorgangs determined Nicolsweg malfunctionisinga on the reference spectrum determined (static operation).
  • the processing of the audio signal to the amplifier input is done by addition a difference spectrum and the reference spectrum. If at the amplifier output a signal anomaly was determined, the frequency spectrum for the Amplifier input only by adding the amplifier difference spectrum generated to the reference spectrum. Otherwise, the microphone difference spectrum becomes added to the reference spectrum.
  • the frequency spectrum for the amplifier input amplified compared to the reference spectrum in the microphone spectrum weakened Frequencies and attenuates amplified frequencies.
  • This signal is transferred from the frequency range in the time domain, in an analog Signal converted and supplied to the amplifier input.
  • the signal processing runs during the calibration analogous to Processing in normal operation.
  • a key difference is during the calibration process, the characteristics of the transmission path, in particular the amplifier are stored.
  • the characteristics of the transmission path, in particular the amplifier are stored.
  • the characteristics of the transmission path, in particular the amplifier are stored.
  • the characteristics of the transmission path, in particular the amplifier are stored.
  • the characteristics of the transmission path, in particular the amplifier are stored.
  • the characteristics of the transmission path, in particular the amplifier are stored.
  • the characteristics of the transmission path, in particular the amplifier are stored.
  • the characteristics of the transmission path, in particular the amplifier are stored.
  • the characteristics of the transmission path, in particular the amplifier are stored.
  • the characteristics of the transmission path, in particular the amplifier are stored.
  • the characteristics of the transmission path, in particular the amplifier are stored.
  • the characteristics of the transmission path, in particular the amplifier are stored.
  • the characteristics of the transmission path, in particular the amplifier are stored.
  • the characteristics of the transmission path, in particular the amplifier are stored.
  • the static microphone difference spectrum becomes equated with the static amplifier differential spectrum. Is at the time of the calibration no signal from the amplifier available (not connected) the static amplifier difference spectrum is equated with a zero spectrum; it is assumed that at the amplifier output no deviation to the reference spectrum.
  • the acoustic part of the transmission path - the signals of the different Channels can no longer be recorded without overlay in the same way as in electronic part of the transmission path. Therefore, the following method can be used to make the feedback per channel individual and optimal.
  • Measurements are made showing the proportion of each channel in the microphone recorded signal - and thus the position of the microphone in the sound space - determine.
  • each channel is individually with a defined Input signal (for example white noise) or the channels simultaneously with clearly distinguishable input signals (e.g., different discrete frequencies) acted upon and recorded the corresponding effects on the microphone.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Amplifiers (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Optical Communication System (AREA)

Claims (11)

  1. Procédé pour optimiser un signal audio, comprenant les étapes suivantes :
    a) définition continue de la différence d'un signal audio prédéfini et d'un signal audio modifié,
    cette différence étant définie dans le domaine temporel et/ou dans le domaine fréquentiel et exécutée de préférence en temps réel, et
    b) définition continue d'un signal audio optimisé, à l'aide de la différence dans le domaine temporel et/ou dans le domaine fréquentiel,
    le signal audio optimisé résultant du signal audio prédéfini et de la différence dans le domaine temporel et/ou dans le domaine fréquentiel, et
    le signal audio modifié résultant du signal audio optimisé.
  2. Procédé selon la revendication 1, selon lequel l'étape a) comprend la définition du spectre de fréquence du signal audio prédéfini et du signal audio modifié.
  3. Procédé selon la revendication 1 ou 2, selon lequel l'étape a) comprend la mise à l'échelle du signal audio prédéfini et/ou du signal audio modifié, dans le domaine temporel et/ou dans le domaine fréquentiel.
  4. Procédé selon l'une des revendications précédentes, selon lequel l'étape b) comprend l'addition du spectre de fréquence du signal audio prédéfini et du spectre différentiel résultant des spectres de fréquences du signal audio prédéfini et du signal audio modifié.
  5. Procédé selon l'une des revendications précédentes, selon lequel l'étape b) comprend la décision concernant une optimisation du signal audio.
  6. Procédé selon l'une des revendications précédentes, selon lequel l'étape a) comprend la réception avec un micro d'un signal audio modifié.
  7. Procédé selon l'une des revendications précédentes, selon lequel les étapes a) et b) sont exécutées pour un signal audio prédéfini et avec un premier signal audio modifié et au moins un second signal audio modifié.
  8. Dispositif pour optimiser un signal audio, avec
    a) un appareil pour définir en continu la différence d'un signal audio prédéfini et un signal audio modifié,
    cette différence étant définie dans le domaine temporel et/ou dans le domaine fréquentiel et exécutée de préférence en temps réel, et
    b) un appareil pour définir en continu un signal audio optimisé, à l'aide de la différence dans le domaine temporel et/ou dans le domaine fréquentiel,
    le signal audio optimisé résultant du signal audio prédéfini et de la différence dans le domaine temporel et/ou dans le domaine fréquentiel, et
    le signal audio modifié résultant du signal audio optimisé.
  9. Dispositif selon la revendication 8, avec un appareil pour la décision concernant une optimisation du signal audio.
  10. Produit formant programme d'ordinateur qui peut être chargé directement dans la mémoire principale d'un ordinateur numérique et qui comprend des sections de codes d'instruction grâce auxquelles les étapes du procédé selon l'une des revendications 1 à 7 sont exécutées quand le produit formant programme d'ordinateur fonctionne sur un ordinateur.
  11. Produit formant programme d'ordinateur qui est mis en mémoire sur un support lisible par ordinateur et qui comprend des moyens de programme lisibles par ordinateur grâce auxquels les étapes du procédé selon l'une des revendications 1 à 7 sont exécutées quand ledit produit fonctionne sur un ordinateur.
EP02021050A 2002-09-20 2002-09-20 Méthode pour l'optimisation d'un signal audio Expired - Lifetime EP1401243B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP02021050A EP1401243B1 (fr) 2002-09-20 2002-09-20 Méthode pour l'optimisation d'un signal audio
DE50205207T DE50205207D1 (de) 2002-09-20 2002-09-20 Verfahren zum Optimieren eines Audiosignals
AT02021050T ATE312498T1 (de) 2002-09-20 2002-09-20 Verfahren zum optimieren eines audiosignals
PCT/EP2003/010119 WO2004030409A2 (fr) 2002-09-20 2003-09-11 Procede pour optimiser un signal audio
AU2003270179A AU2003270179A1 (en) 2002-09-20 2003-09-11 Method for optimising an audio signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02021050A EP1401243B1 (fr) 2002-09-20 2002-09-20 Méthode pour l'optimisation d'un signal audio

Publications (2)

Publication Number Publication Date
EP1401243A1 EP1401243A1 (fr) 2004-03-24
EP1401243B1 true EP1401243B1 (fr) 2005-12-07

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EP02021050A Expired - Lifetime EP1401243B1 (fr) 2002-09-20 2002-09-20 Méthode pour l'optimisation d'un signal audio

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EP (1) EP1401243B1 (fr)
AT (1) ATE312498T1 (fr)
AU (1) AU2003270179A1 (fr)
DE (1) DE50205207D1 (fr)
WO (1) WO2004030409A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008053721A1 (de) * 2008-10-29 2010-05-12 Trident Microsystems (Far East) Ltd. Verfahren und Anordnung zur Optimierung des Übertragungsverhaltens von Lautsprechersystemen in einem Gerät der Unterhaltungselektronik
WO2023235371A1 (fr) * 2022-06-03 2023-12-07 Shure Acquisition Holdings, Inc. Analyse et optimisation d'un signal audio
DE102023107434B3 (de) 2023-03-24 2024-08-14 Tymphany Worldwide Enterprises Limited Kalibrierung eines Lautsprechersystems

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5771297A (en) * 1994-08-12 1998-06-23 Motorola, Inc. Electronic audio device and method of operation
DE10105184A1 (de) * 2001-02-06 2002-08-29 Bosch Gmbh Robert Verfahren zum automatischen Einstellen eines digitalen Equalizers und Wiedergabeeinrichtung für Audiosignale zur Realisierung eines solchen Verfahrens

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5917738A (en) * 1996-11-08 1999-06-29 Pan; Cheh Removing the gibbs phenomenon in fourier transform processing in digital filters or other spectral resolution devices
JPH11109995A (ja) * 1997-10-01 1999-04-23 Victor Co Of Japan Ltd 音響信号符号化器
US6240372B1 (en) * 1997-11-14 2001-05-29 Arch Development Corporation System for surveillance of spectral signals

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5771297A (en) * 1994-08-12 1998-06-23 Motorola, Inc. Electronic audio device and method of operation
DE10105184A1 (de) * 2001-02-06 2002-08-29 Bosch Gmbh Robert Verfahren zum automatischen Einstellen eines digitalen Equalizers und Wiedergabeeinrichtung für Audiosignale zur Realisierung eines solchen Verfahrens

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Publication number Publication date
WO2004030409A2 (fr) 2004-04-08
EP1401243A1 (fr) 2004-03-24
ATE312498T1 (de) 2005-12-15
DE50205207D1 (de) 2006-01-12
AU2003270179A1 (en) 2004-04-19
WO2004030409A3 (fr) 2004-06-17

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