EP1519618A1 - Verfahren und Kommunikationsgerät mit Mitteln zur Entstörung von Audiosignalen - Google Patents
Verfahren und Kommunikationsgerät mit Mitteln zur Entstörung von Audiosignalen Download PDFInfo
- Publication number
- EP1519618A1 EP1519618A1 EP03021578A EP03021578A EP1519618A1 EP 1519618 A1 EP1519618 A1 EP 1519618A1 EP 03021578 A EP03021578 A EP 03021578A EP 03021578 A EP03021578 A EP 03021578A EP 1519618 A1 EP1519618 A1 EP 1519618A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- communication device
- reverberation time
- audio signals
- algorithm
- reverberation
- 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.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/02—Circuits for transducers, loudspeakers or microphones for preventing acoustic reaction, i.e. acoustic oscillatory feedback
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R27/00—Public address systems
Definitions
- the invention relates to a method for operating a communication device, wherein the communication device audio signals radiates to an environment and on the one hand these audio signals including environmental superimposed interference components, which contain at least echo and reverberation, resumes and on the other hand audio signals of an external sound source, preferably a communication device user, including whose environmental disturbances, absorbs, and the resumed audio signals by a first algorithm used to provide a room impulse response to the environment determine.
- the invention relates to a communication device with means for interference suppression of audio signals, wherein the communication device has at least one speaker, the audio signals radiates to an environment and continue at least a microphone, with the one hand, these audio signals including environmental layered Noise components that contain at least echo and reverberation again be recorded and on the other hand audio signals a external sound source, preferably a communication device user, including their environmental disturbances, be received, and in the communication device a first Is provided, which is a means of calculating a Room impulse response of the environment has.
- the type and duration of the reverberation are determined by the geometry of the Space and the condition of the walls.
- Various algorithms of digital voice and speech Audio signal processing, especially those dealing with need to deal with the problem of reverberation of speech signals often an estimate of the so-called reverberation time.
- the reverberation time has hitherto been determined by two types of processes, namely statistical statistical methods or by a method that uses one or more measuring signals.
- a measurement signal must be generated via an external sound source. for example, white noise, to be played, which known to the system.
- white noise for example, white noise
- the reverberation time T60 is estimated.
- the inventors have recognized that information contained in the Room impulse response are included, even for suppression of another Audio signals can be used.
- the room impulse response can be obtained by a known method.
- the voice of the communication device user of the second communication device for example - in the case of two communication devices - That of a first communication device in handsfree mode radiated audio signal, usually the voice of the communication device user of the second communication device, inclusive the by the environment of the first communication device conditional noise components again from the microphone of the first Communications device recorded, it can be from these Audio signals with a first algorithm, first the room impulse response determine.
- the room impulse response implicitly the reverberation time T60, that is the reverberation time can be calculated from it.
- the inventors propose a method for operating a communication device, wherein the communication device audio signals to an environment radiates and on the one hand these audio signals including environmental superimposed interference components, at least Echo and reverberation included, resumes and on the other hand Audio signals from an external sound source, preferably one Communication device user, including their environment Noise, picking up, and a first algorithm a room impulse response of the environment determines to that effect improve that on the recorded audio signals of the external Sound source, preferably the communication user, a second suppression algorithm is applied, the used for suppression a reverberation time, which he from the determined by the first algorithm determined room impulse response.
- the method is particularly suitable for communication devices, such as for radios, mobile devices or Festnetztelefone, because here is the possibility of radiation a known signal and the subsequent recording given is.
- the audio signals via a loudspeaker and also audio signals can pick up via a microphone, the method is suitable due to the environmental condition of the stand-alone device to use the resulting reverberation time and to suppress interference.
- the determination of the reverberation time is via this method much more possible, as compared to a previous one Estimation from the reverberant audio signal.
- the new procedure may be the basis for a Real-time parameterization and real-time adaptation of algorithms form the reverberation of speech signals.
- the reverberation time from the energetic Rejection of reverberation is calculated using the information about the speed of this waste in the Room impulse response is included. This can be a more accurate Determination of the reverberation time compared to the statistically based Estimation of the reverberation time done.
- AEC Acoustic Echo Cancelation
- This AEC algorithm is available in many phones today and is actually to suppress the resumed audio signals used.
- the algorithm calculates a room impulse response, which according to the invention for determining the reverberation time can be used.
- a second suppression algorithm is used. Such a second suppression algorithm should be under Utilization of the determined or accepted reverberation time due to the environment superimposed interference components, such as echo and reverb, from the recorded audio signal of the communication device user remove.
- the Room impulse response as a function of frequency and preferably filtered through several band passes. This can the reverberation time, which is itself frequency dependent, depending on the frequency are determined.
- the described method of operation of a communication device is based on the fact that the speaker of an audio system, for example radiating into a room and that the audio signal fading through the room is picked up again by the microphone of the audio system.
- a known communication device with means for interference suppression of audio signals wherein the communication device has at least one speaker, the audio signals radiates to an environment and continue at least one Microphone, with the one hand, these audio signals including environmental superimposed interference components, the at least echo and reverberation included, resumed and on the other hand audio signals from an external sound source, preferably a communication device user, including recorded their environmental interference components and a first means are provided in the communication device is that means for calculating a room impulse response the environment, to improve that a second means for the recorded audio signals of the external Sound source, preferably the communication user, including their environmental interference components is arranged, which is a means for determining the reverberation time having the reverberation time determined in the contained by the first means determined room impulse response is.
- a communication device in which the reverberation time, by the utilization of the Radiation of a known audio signal and the subsequent Recording of the audio signal lost in the room via the determination the space impulse response has been determined, which is now also for filtering the audio signals of an external Sound source can be used.
- the suppression can here more accurate than before, because the reverberation time better and more accurately determined.
- the second means can be used Have program means and / or program modules that the Determine reverberation time.
- AEC Acoustic Echo Cancellation
- the second means program means and / or program modules having an algorithm perform that by taking advantage of the environment certain reverberation time superimposed by the environment Noise components, such as echo and reverb, from the recorded audio signal of the communication device user.
- the determination of the reverberation time as a function of the frequency and according to the frequency-dependent interference suppression of the audio signals is realized low in the communication device, if bandpass filters are arranged in the communication device, that filter the room impulse response.
- the new communication device may be a telephone, for example in the form of a mobile station or a Wired telephone, a household electrical appliance or an electrical module of a vehicle with means for Voice input and voice acting.
- FIG. 1 shows an example in a diagram of the temporal Energy distribution of an audio signal, which is in one Record space with a microphone and measure when a impulsive audio signal, for example a bang, occurs. This power distribution is obtained by entering the magnitude square forms a room impulse response and this logarithmiert.
- the reverberation 3 which consists of quasi chaotic superimposed reflections of the Audio signal exists in the room and diffuse arrives at the measuring microphone.
- the new method uses the reverberation time T60 of an audio signal, from the room impulse response 14, for a given Space is characteristic, was determined.
- the reverberation time T60 is shown in Figure 1 on the Ordinate of the diagram determines an energy range A60, the is in the range of the reverberation 3, in which the energy of the Reverberation drops by 60 decibels.
- the upper and the lower Limit value of the energy range A60 are first on the Reverberation curve 3 and then on the abscissa, ie the time axis projected.
- the projected area on the timeline corresponds the reverberation time T60.
- the energy sector is not necessarily be chosen with 60 decibels, but can also be chosen smaller or larger. For example can also be chosen an area in which the energy of the Reverberation drops by 30 decibels, for example.
- the value that obtained from the projection on the timeline must be appropriate by the factor of reduction / enlargement of the Energy, to be adjusted. At an energy range of only 30 decibels will be equal to the time period with the factor 2 multiplied to obtain the reverberation time T60.
- the temporal energy distribution is exemplified a pulse-like audio signal, for example one Bang shown.
- the audio signal in a smaller space to be included. This manifests itself in one less reverberation 3.
- the reverberation curve 3 falls faster whereby the reverberation time T60 is lower than in FIG. 1 is.
- the direct sound was 1 and the Echoes 2 in the diagram of Figure 2 unchanged from the diagram taken over the figure 1.
- differences could occur here.
- the reverberation time T60 can be determined.
- FIG. 3 now shows a measured room impulse response 14 of a Space.
- On the ordinate are the signal amplitudes and the time is plotted on the abscissa.
- the speed of the waste of energy in the space impulse response Time is characteristic of this particular space. This speed is independent of the measurement signal and the Position of sound source and microphone in the room for that particular Room to be obtained.
- FIG. 4 shows two communication devices 13.1 and 13.2, Replace the signals 4 and 12 via an interface 13.3. It may be in the communication devices 13.1 and 13.2, for example, to act on terminals in the mobile network.
- the interface 13.3 may be, for example around a transmitting / receiving antenna or an infrared interface act.
- the new method is used.
- the first communication device 13.1 should be in an environment located, for example, in a church, in the Hall effects occur. This environment is open by a one-sided Rectangle indicated by the reference numeral 9.
- the signal 4 is via the interface 13.3 from the second Communication device 13.2 to the first communication device 13.1 sent and received by this.
- the signal 12 should be from first communication device 13.1 to the second communication device 13.2 be sent, it should be disrupted by the surroundings 9 of the first communication device 13.1 occur, be suppressed.
- the first communication device 13.1 has at least one Digital-to-analog converter 6, which is the second communication device 13.2 sent digital signals 4 in analog Converts signals and forwards them to a loudspeaker 7.
- the first communication device 13.1 has a Microphone 10, which can record analog signals and over an analog-to-digital converter 11 digitized.
- the already known reverberation time as follows for the suppression of the signal 15.1 available made.
- the sent from the second communication device 13.2 Signal 4 is converted by the digital-to-analog converter 6 and via the speaker 7 of the first communication device 13.1 issued.
- Analogous to the diagrams of FIGS. 1 and 2 the signal 4 in the form of direct sound 8.1, echo 8.2 and Reverberation 8.3 to the microphone 10 of the first communication device 13.1 arrive.
- the direct sound becomes 8.1
- the echo becomes 8.2
- the reverberation becomes 8.3 converted via an analog-to-digital converter 6 and over an algorithm 5, the room impulse response is determined.
- AEC Acoustic Echo Cancellation
- the reverberation time can be determined from this.
- This reverberation time can also be used for filtering the signal 15.1 of the Communication device user 15, since the reverberation times, which is responsible for the transmission of signals 8.1 to 8.3 from the speaker 7 on the environment 9 to the microphone 10th and for the transmission of signals 15.1 to 15.3 from the communication device user 15 to the microphone 10, similar are.
- the determined by the first algorithm 5 to determine Another algorithm 16 is provided to access the data of the algorithm 5 has, so on the room impulse response and the reverberation time contained therein. Then be the signals 15.1 to 15.3 with a Entstörtician 17th suppressed and output as signals 12.
- FIG. 5 shows a special embodiment of a communication device.
- a voice-driven Appliance 13.4 applied. This is the operator 15 of the voice-controlled electrical appliance only with the voice-controlled electrical appliance 13.4 in contact and not like in Figure 4 with another communication participant, the is located on a second communication device.
- the voice-controlled electrical device 13.4 has a Voice generation module 18 to 4.1 signals, for example, the menu size of the electrical device 13.4, via the speaker 7 to spend.
- the voice-controlled electrical appliance has 13.4 via a speech recognition module 19 to signals 12.1, for example, recognize the language of the operator 15 to be able to.
- algorithm 5 can not be used become. But the reverberation time, resulting from the room impulse response which determines in algorithm 5 which was almost the same for the signals 15.1 to 15.3 of the operator 15, can by another algorithm 16 used, with a Entstörtician 17 the signal 15.1 suppressed.
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Telephone Function (AREA)
- Noise Elimination (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Transceivers (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
Description
- Figur 1:
- Zeitliche Energieverteilung eines ursprünglich impulsförmigen Audiosignals in einem Raum;
- Figur 2:
- Zeitliche Energieverteilung desselben Audiosignals aus Figur 1, jedoch in einem kleineren Raum;
- Figur 3:
- Gemessene Raumimpulsantwort eines Raumes;
- Figur 4:
- Zwei Kommunikationsgeräte, die Signale austauschen, wobei in einem Kommunikationsgerät das neue Verfahren angewendet wird;
- Figur 5:
- Sprachgesteuertes Elektrogerät, in dem das neue Verfahren angewendet wird.
- Die Nachhallzeit, die für diese Umgebung 9 charakteristisch ist, ist in der Raumimpulsantwort enthalten. Die Raumimpulsantwort wiederum lässt sich aus dem Verhältnis der Signale 8.2 und 8.3 zum Signal 8.1 bestimmen.
- Die Nachhallzeit ändert sich an verschiedenen Positionen der Schallquelle im Raum nicht signifikant. Das heißt, die Signale 8.1 bis 8.3 die vom Lautsprecher 7 zum Mikrofon 10 gelangen und die Signale 15.1 bis 15.3, die vom Kommunikationsgerätenutzer 15 zum Mikrofon 10 gelangen, haben eine ähnliche Nachhallzeit.
- 1
- Direktschall eines impulsartigen Audiosignals
- 2
- Echos
- 3
- Nachhall / Nachhallkurve
- 4
- Empfangene Signale vom zweiten Kommunikationsgerät
- 4.1
- Signale vom Spracherzeugungsmodul
- 5
- Algorithmus
- 6
- Digital-Analog-Wandler
- 7
- Lautsprecher
- 8.1
- Signal, das direkt vom Lautsprecher zum Mikrofon gelangt = Direktschall
- 8.2
- Signal des Lautsprechers, das einfach am Objekt reflektiert wird = Echo
- 8.3
- Signal des Lautsprechers, das mehrfach und diffus am Objekt reflektiert wird = Nachhall
- 9
- Objekt an dem die Signale reflektiert werden
- 10
- Mikrofon
- 11
- Analog-Digital-Wandler
- 12
- Zu sendende Signale zum zweiten Kommunikationsgerät
- 12.1
- Signale zum Spracherkennungsmodul
- 13.1
- Erstes Kommunikationsgerät
- 13.2
- Zweites Kommunikationsgerät
- 13.3
- Schnittstelle für Signalübermittlung
- 13.4
- Sprachgesteuertes Elektrogerät
- 14
- Raumimpulsantwort
- 15
- Kommunikationsgerätenutzer/Bediener
- 15.1
- Signal, das direkt vom Kommunikationsgerätenutzer zum Mikrofon gelangt = Direktschall
- 15.2
- Signal des Kommunikationsgerätenutzers, das einfach am Objekt reflektiert wird = Echo
- 15.3
- Signal des Kommunikationsgerätenutzers, das mehrfach und diffus am Objekt reflektiert wird = Nachhall
- 16
- Algorithmus zur Enthallung der Signale 15.1 bis 15.3
- 17
- Entstöreinheit
- 18
- Spracherzeugungsmodul
- 19
- Spracherkennungsmodul
- A60
- Energiebereich, in dem die Energie um 60 Dezibel abfällt
- T60
- Nachhallzeit T60
Claims (18)
- Verfahren zum Betrieb eines Kommunikationsgerätes (13.1, 13.2, 13.4), wobei
das Kommunikationsgerät (13.1, 13.2, 13.4) Audiosignale (8.1 bis 8.3) an eine Umgebung (9) abstrahlt und
einerseits diese Audiosignale (8.1 bis 8.3) einschließlich umgebungsbedingter überlagerter Störanteile, die zumindest Echo (8.2) und Nachhall (8.3) enthalten, wieder aufnimmt und
andererseits Audiosignale (15.1 bis 15.3) einer externen Schallquelle, vorzugsweise eines Kommunikationsgerätenutzers (15), einschließlich deren umgebungsbedingter Störanteile (15.2 und 15.3) aufnimmt, und
die wiederaufgenommenen Audiosignale (8.1 bis 8.3) durch einen ersten Algorithmus (5) benutzt werden, um eine Raumimpulsantwort der Umgebung zu bestimmen,
dadurch gekennzeichnet, dass
auf die aufgenommenen Audiosignale (15.1 bis 15.3) der externen Schallquelle, vorzugsweise des Kommunikationsgerätenutzers (15), ein zweiter Entstör-Algorithmus (16) angewendet wird, der zur Entstörung eine Nachhallzeit (T60) verwendet, die er aus der durch den ersten Algorithmus (5) bestimmten Raumimpulsantwort (14) ermittelt. - Verfahren gemäß dem voranstehenden Patentanspruch 1,
dadurch gekennzeichnet, dass
ausschließlich der erste Algorithmus (5) die Nachhallzeit (T60) bestimmt. - Verfahren gemäß dem voranstehenden Patentanspruch 1,
dadurch gekennzeichnet, dass
ausschließlich der zweite Entstör-Algorithmus (16) die Nachhallzeit (T60) bestimmt. - Verfahren gemäß einem der voranstehenden Patentansprüche 1 bis 3,
dadurch gekennzeichnet, dass
die Nachhallzeit (T60) aus dem energetischen Abfall des Nachhalls (8.3) in der Raumimpulsantwort (14) berechnet wird. - Verfahren gemäß einem der voranstehenden Patentansprüche 1 bis 4,
dadurch gekennzeichnet, dass
als erster Algorithmus ein AEC-Algorithmus (5) (AEC = Acoustic Echo Cancellation) verwendet wird. - Verfahren gemäß einem der voranstehenden Patentansprüche 1 bis 5,
dadurch gekennzeichnet, dass
der zweite Entstör-Algorithmus (16) unter Ausnutzung der umgebungsabhängig bestimmten oder übernommenen Nachhallzeit (T60) die überlagerten Störanteile (15.2 und 15.3) aus dem aufgenommenen Audiosignal (15.1 bis 15.3) der externen Schallquelle entfernt. - Verfahren gemäß einem der voranstehenden Patentansprüche 1 bis 6,
dadurch gekennzeichnet, dass
zur Bestimmung der Nachhallzeit (T60) in Abhängigkeit der Frequenz die Raumimpulsantwort (14) gefiltert wird, vorzugsweise mit Bandpassfiltern. - Kommunikationsgerät (13.1, 13.2, 13.4) mit Mitteln zur Entstörung von Audiosignalen, wobei das Kommunikationsgerät (13.1, 13.2, 13.4) über
zumindest einen Lautsprecher (7) verfügt, der Audiosignale (8.1 bis 8.3) an eine Umgebung (9) abstrahlt und
weiterhin zumindest ein Mikrofon (10) aufweist, mit dem einerseits diese Audiosignale (8.1 bis 8.3) einschließlich umgebungsbedingter überlagerter Störanteile, die zumindest Echo (8.2) und Nachhall (8.3) enthalten, wieder aufgenommen werden und
andererseits Audiosignale (15.1 bis 15.3) einer externen Schallquelle, vorzugsweise eines Kommunikationsgerätenutzers (15), einschließlich deren umgebungsbedingter Störanteile (15.2, 15.3) aufgenommen werden, und
im Kommunikationsgerät (13.1, 13.2, 13.4) ein erstes Mittel (5) vorgesehen ist, das ein Mittel zur Berechnung einer Raumimpulsantwort der Umgebung aufweist,
dadurch gekennzeichnet, dass
ein zweites Mittel (16) für die aufgenommenen Audiosignale (15.1 bis 15.3) der externen Schallquelle, vorzugsweise des Kommunikationsengerätenutzers (15), einschließlich deren umgebungsbedingter Störanteile (15.2, 15.3) angeordnet ist, das ein Mittel zur Ermittlung der Nachhallzeit (T60) aufweist, das die Nachhallzeit (T60) ermittelt, die in der durch das erste Mittel (5) bestimmen der Raumimpulsantwort (14) enthalten ist. - Kommunikationsgerät (13.1, 13.2, 13.4) gemäß dem voranstehende Patentanspruch 8,
dadurch gekennzeichnet, dass
ausschließlich das erste Mittel (5) Programmmittel und/oder Programmmodule aufweist, die die Nachhallzeit (T60) bestimmen. - Kommunikationsgerät (13.1, 13.2, 13.4) gemäß dem voranstehende Patentanspruch 8,
dadurch gekennzeichnet, dass
ausschließlich das zweite Mittel (16) Programmmittel und/oder Programmmodule aufweist, die die Nachhallzeit (T60) bestimmen. - Kommunikationsgerät (13.1, 13.2, 13.4) gemäß einem der voranstehende Patentansprüche 8 bis 10,
dadurch gekennzeichnet, dass
die Programmmittel und/oder Programmmodule des ersten Mittels einen AEC-Algorithmus (5) (AEC = Acoustic Echo Cancelation) beinhalten. - Kommunikationsgerät (13.1, 13.2, 13.4) gemäß einem der voranstehende Patentansprüche 8 bis 11,
dadurch gekennzeichnet, dass
die Programmmittel und/oder Programmmodule des zweiten Mittels (16) einen Algorithmus beinhalten, der unter Ausnutzung der umgebungsabhängig bestimmten Nachhallzeit die überlagerten Störanteile (15.2 und 15.3) aus dem aufgenommenen Audiosignal (15.1 bis 15.3) der externen Schallquelle (15) entfernt. - Kommunikationsgerät (13.1, 13.2, 13.4) gemäß einem der voranstehenden Patentansprüche 8 bis 12,
dadurch gekennzeichnet, dass
Bandpassfilter vorgesehen sind, die die Raumimpulsantwort (14) filtern und die Bestimmung der Nachhallzeit (T60) in Abhängigkeit der Frequenz ermöglichen. - Kommunikationsgerät (13.1, 13.2, 13.4) gemäß einem der voranstehenden Patentansprüche 8 bis 13,
dadurch gekennzeichnet, dass
das Kommunikationsgerät (13.1, 13.2, 13.4) ein Telefon ist. - Kommunikationsgerät (13.1, 13.2, 13.4) gemäß dem voranstehenden Patentanspruch 14,
dadurch gekennzeichnet, dass
das Kommunikationsgerät (13.1, 13.2, 13.4) ein kabelgebundenes Telefon ist. - Kommunikationsgerät (13.1, 13.2, 13.4) gemäß einem der voranstehenden Patentansprüche 8 bis 14,
dadurch gekennzeichnet, dass
das Kommunikationsgerät (13.1, 13.2, 13.4) ein Mobilfunkendgerät ist. - Kommunikationsgerät (13.1, 13.2, 13.4) gemäß einem der voranstehenden Patentansprüche 8 bis 13,
dadurch gekennzeichnet, dass
das Kommunikationsgerät (13.1, 13.2, 13.4) ein elektrisches Haushaltgerät mit Mittel zur Spracheingabe und Sprachausgabe ist. - Kommunikationsgerät (13.1, 13.2, 13.4) gemäß einem der voranstehenden Patentansprüche 8 bis 17,
dadurch gekennzeichnet, dass
das Kommunikationsgerät (13.1, 13.2, 13.4) ein elektrisches Modul eines Fahrzeuges mit Mitteln zur Spracheingabe und Sprachausgabe ist.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP03021578A EP1519618B1 (de) | 2003-09-24 | 2003-09-24 | Verfahren und Kommunikationsgerät mit Mitteln zur Entstörung von Audiosignalen |
| AT03021578T ATE532346T1 (de) | 2003-09-24 | 2003-09-24 | Verfahren und kommunikationsgerät mit mitteln zur entstörung von audiosignalen |
| PCT/EP2004/008999 WO2005041615A1 (de) | 2003-09-24 | 2004-08-11 | Verfahren und kommunikationsgerät mit mitteln zur entstörung von audiosignalen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP03021578A EP1519618B1 (de) | 2003-09-24 | 2003-09-24 | Verfahren und Kommunikationsgerät mit Mitteln zur Entstörung von Audiosignalen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1519618A1 true EP1519618A1 (de) | 2005-03-30 |
| EP1519618B1 EP1519618B1 (de) | 2011-11-02 |
Family
ID=34178488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03021578A Expired - Lifetime EP1519618B1 (de) | 2003-09-24 | 2003-09-24 | Verfahren und Kommunikationsgerät mit Mitteln zur Entstörung von Audiosignalen |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1519618B1 (de) |
| AT (1) | ATE532346T1 (de) |
| WO (1) | WO2005041615A1 (de) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4066842A (en) * | 1977-04-27 | 1978-01-03 | Bell Telephone Laboratories, Incorporated | Method and apparatus for cancelling room reverberation and noise pickup |
| US5263019A (en) * | 1991-01-04 | 1993-11-16 | Picturetel Corporation | Method and apparatus for estimating the level of acoustic feedback between a loudspeaker and microphone |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3344864B2 (ja) * | 1995-03-13 | 2002-11-18 | 日本放送協会 | 残響時間自動測定方法および残響時間自動測定装置 |
-
2003
- 2003-09-24 EP EP03021578A patent/EP1519618B1/de not_active Expired - Lifetime
- 2003-09-24 AT AT03021578T patent/ATE532346T1/de active
-
2004
- 2004-08-11 WO PCT/EP2004/008999 patent/WO2005041615A1/de not_active Ceased
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4066842A (en) * | 1977-04-27 | 1978-01-03 | Bell Telephone Laboratories, Incorporated | Method and apparatus for cancelling room reverberation and noise pickup |
| US5263019A (en) * | 1991-01-04 | 1993-11-16 | Picturetel Corporation | Method and apparatus for estimating the level of acoustic feedback between a loudspeaker and microphone |
Non-Patent Citations (1)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 1997, no. 01 31 January 1997 (1997-01-31) * |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE532346T1 (de) | 2011-11-15 |
| WO2005041615A1 (de) | 2005-05-06 |
| EP1519618B1 (de) | 2011-11-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE60108401T2 (de) | System zur erhöhung der sprachqualität | |
| DE2207141C3 (de) | Schaltungsanordnung zur Unterdrückung unerwünschter Sprachsignale mittels eines vorhersagenden Filters | |
| EP0698986B1 (de) | Verfahren zur adaptiven Echokompensation | |
| DE69525987T2 (de) | Sender-Empfänger mit einem akustischen Wandler vom Ohrpassstück-Typ | |
| EP1143416A2 (de) | Geräuschunterdrückung im Zeitbereich | |
| DE4330143A1 (de) | Anordnung zur Siganlverarbeitung akustischer Eingangssignale | |
| DE102016200637B3 (de) | Verfahren zur Reduktion der Latenzzeit einer Filterbank zur Filterung eines Audiosignals sowie Verfahren zum latenzarmen Betrieb eines Hörsystems | |
| EP1103956B1 (de) | Exponentielle Echo- und Geräuschabsenkung in Sprachpausen | |
| DE112007003625T5 (de) | Echounterdrückungsvorrichtung, echounterdrückungssystem, Echounterdrückungsverfahren und Computerprogramm | |
| DE10043064B4 (de) | Verfahren und Vorrichtung zur Elimination von Lautsprecherinterferenzen aus Mikrofonsignalen | |
| DE102016225204B4 (de) | Verfahren zum Betrieb eines Hörgerätes | |
| EP3454572A1 (de) | Verfahren zum erkennen eines defektes in einem hörinstrument | |
| EP0797339B1 (de) | Verfahren und Schaltungsanordnung zur Verbesserung der Übertragungseigenschaften einer echobehafteten Übertragungsstrecke in einem Telekommunikationsnetz | |
| EP1126687A2 (de) | Verfahren zur koordinierten Echo-und/oder Geräuschabsenkung | |
| DE69817461T2 (de) | Verfahren und Vorrichtung zur optimierten Verarbeitung eines Störsignals während einer Tonaufnahme | |
| EP1155561B1 (de) | Vorrichtung und verfahren zur geräuschunterdrückung in fernsprecheinrichtungen | |
| DE102019107173A1 (de) | Verfahren und Vorrichtung zum Erzeugen und Ausgeben eines Audiosignals zum Erweitern des Höreindrucks bei Live-Veranstaltungen | |
| EP1519618B1 (de) | Verfahren und Kommunikationsgerät mit Mitteln zur Entstörung von Audiosignalen | |
| EP0642251B1 (de) | Verfahren zur automatischen Sprachrichtungsumschaltung und Schaltungsanordnung zur Durchführung des Verfahrens | |
| EP4236371B1 (de) | Verfahren zur reduktion von echo in einem hörinstrument | |
| DE10356063B4 (de) | Verfahren zur Entstörung von Audiosignalen | |
| DE2633394A1 (de) | Verfahren zur kompensation von akustischer rueckkopplung in freisprechanlagen | |
| DE10342307B4 (de) | Verfahren zur Entstörung übermittelter Audiosignale zwischen Telekommunikationsendgeräten | |
| DE10030926A1 (de) | Störsignalabhängige adaptive Echounterdrückung | |
| DE102019105458A1 (de) | Zeitverzögerungsschätzung |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR |
|
| AX | Request for extension of the european patent |
Extension state: AL LT LV MK |
|
| 17P | Request for examination filed |
Effective date: 20050422 |
|
| AKX | Designation fees paid |
Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: BENQ MOBILE GMBH & CO. OHG |
|
| 19U | Interruption of proceedings before grant |
Effective date: 20070101 |
|
| 19W | Proceedings resumed before grant after interruption of proceedings |
Effective date: 20070702 |
|
| 19W | Proceedings resumed before grant after interruption of proceedings |
Effective date: 20090803 |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: PALM, INC. |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. |
|
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
| REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 50314041 Country of ref document: DE Effective date: 20111229 |
|
| REG | Reference to a national code |
Ref country code: NL Ref legal event code: VDEP Effective date: 20111102 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20111102 Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20111102 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20120203 Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20111102 Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20120302 |
|
| REG | Reference to a national code |
Ref country code: IE Ref legal event code: FD4D |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20111102 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20111102 Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20111102 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20111102 Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20111102 Ref country code: IE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20111102 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20120202 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20111102 Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20111102 |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed |
Effective date: 20120803 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 50314041 Country of ref document: DE Effective date: 20120803 |
|
| BERE | Be: lapsed |
Owner name: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. Effective date: 20120930 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20120930 Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20120213 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20111102 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20120930 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20120930 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20120930 |
|
| REG | Reference to a national code |
Ref country code: AT Ref legal event code: MM01 Ref document number: 532346 Country of ref document: AT Kind code of ref document: T Effective date: 20120924 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20120924 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R082 Ref document number: 50314041 Country of ref document: DE Representative=s name: SAMSON & PARTNER, PATENTANWAELTE, DE |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R082 Ref document number: 50314041 Country of ref document: DE Representative=s name: MAUCHER JENKINS, DE Effective date: 20140307 Ref country code: DE Ref legal event code: R081 Ref document number: 50314041 Country of ref document: DE Owner name: QUALCOMM INCORPORATED, US Free format text: FORMER OWNER: SIEMENS AKTIENGESELLSCHAFT, 80333 MUENCHEN, DE Effective date: 20111107 Ref country code: DE Ref legal event code: R081 Ref document number: 50314041 Country of ref document: DE Owner name: QUALCOMM INCORPORATED, US Free format text: FORMER OWNER: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P., HOUSTON, US Effective date: 20140307 Ref country code: DE Ref legal event code: R082 Ref document number: 50314041 Country of ref document: DE Representative=s name: SAMSON & PARTNER, PATENTANWAELTE, DE Effective date: 20140307 Ref country code: DE Ref legal event code: R081 Ref document number: 50314041 Country of ref document: DE Owner name: QUALCOMM INCORPORATED, SAN DIEGO, US Free format text: FORMER OWNER: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P., HOUSTON, TEX., US Effective date: 20140307 Ref country code: DE Ref legal event code: R081 Ref document number: 50314041 Country of ref document: DE Owner name: QUALCOMM INCORPORATED, SAN DIEGO, US Free format text: FORMER OWNER: SIEMENS AKTIENGESELLSCHAFT, 80333 MUENCHEN, DE Effective date: 20111107 Ref country code: DE Ref legal event code: R082 Ref document number: 50314041 Country of ref document: DE Representative=s name: SAMSON & PARTNER PATENTANWAELTE MBB, DE Effective date: 20140307 Ref country code: DE Ref legal event code: R082 Ref document number: 50314041 Country of ref document: DE Representative=s name: MAUCHER JENKINS PATENTANWAELTE & RECHTSANWAELT, DE Effective date: 20140307 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20111102 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20120924 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20030924 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: TP Owner name: QUALCOMM INCORPORATED, US Effective date: 20141224 |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: 732E Free format text: REGISTERED BETWEEN 20150305 AND 20150311 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 14 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R082 Ref document number: 50314041 Country of ref document: DE Representative=s name: MAUCHER JENKINS, DE Ref country code: DE Ref legal event code: R082 Ref document number: 50314041 Country of ref document: DE Representative=s name: MAUCHER JENKINS PATENTANWAELTE & RECHTSANWAELT, DE |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 15 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20170829 Year of fee payment: 15 Ref country code: FR Payment date: 20170823 Year of fee payment: 15 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20170928 Year of fee payment: 15 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 50314041 Country of ref document: DE |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20180924 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190402 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20180930 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20180924 |