Patents by Inventor Gerald Schuller
Gerald Schuller has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240096337Abstract: An encoder for providing an audio stream on the basis of a transform-domain representation of an input audio signal includes a quantization error calculator configured to determine a multi-band quantization error over a plurality of frequency bands of the input audio signal for which separate band gain information is available. The encoder also includes an audio stream provider for providing the audio stream such that the audio stream includes information describing an audio content of the frequency bands and information describing the multi-band quantization error. A decoder for providing a decoded representation of an audio signal on the basis of an encoded audio stream representing spectral components of frequency bands of the audio signal includes a noise filler for introducing noise into spectral components of a plurality of frequency bands to which separate frequency band gain information is associated on the basis of a common multi-band noise intensity value.Type: ApplicationFiled: November 29, 2023Publication date: March 21, 2024Applicant: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung e.V.Inventors: Nikolaus RETTELBACH, Bernhard GRILL, Guillaume FUCHS, Stefan GEYERSBERGER, Markus MULTRUS, Harald POPP, Juergen HERRE, Stefan WABNIK, Gerald SCHULLER, Jens HIRSCHFELD
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Publication number: 20240096338Abstract: An encoder for providing an audio stream on the basis of a transform-domain representation of an input audio signal includes a quantization error calculator configured to determine a multi-band quantization error over a plurality of frequency bands of the input audio signal for which separate band gain information is available. The encoder also includes an audio stream provider for providing the audio stream such that the audio stream includes information describing an audio content of the frequency bands and information describing the multi-band quantization error. A decoder for providing a decoded representation of an audio signal on the basis of an encoded audio stream representing spectral components of frequency bands of the audio signal includes a noise filler for introducing noise into spectral components of a plurality of frequency bands to which separate frequency band gain information is associated on the basis of a common multi-band noise intensity value.Type: ApplicationFiled: November 29, 2023Publication date: March 21, 2024Applicant: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung e.V.Inventors: Nikolaus RETTELBACH, Bernhard GRILL, Guillaume FUCHS, Stefan GEYERSBERGER, Markus MULTRUS, Harald POPP, Juergen HERRE, Stefan WABNIK, Gerald SCHULLER, Jens HIRSCHFELD
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Patent number: 11869521Abstract: An encoder for providing an audio stream on the basis of a transform-domain representation of an input audio signal includes a quantization error calculator configured to determine a multi-band quantization error over a plurality of frequency bands of the input audio signal for which separate band gain information is available. The encoder also includes an audio stream provider for providing the audio stream such that the audio stream includes information describing an audio content of the frequency bands and information describing the multi-band quantization error. A decoder for providing a decoded representation of an audio signal on the basis of an encoded audio stream representing spectral components of frequency bands of the audio signal includes a noise filler for introducing noise into spectral components of a plurality of frequency bands to which separate frequency band gain information is associated on the basis of a common multi-band noise intensity value.Type: GrantFiled: May 17, 2021Date of Patent: January 9, 2024Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Nikolaus Rettelbach, Bernhard Grill, Guillaume Fuchs, Stefan Geyersberger, Markus Multrus, Harald Popp, Juergen Herre, Stefan Wabnik, Gerald Schuller, Jens Hirschfeld
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Publication number: 20220230652Abstract: The present examples refer to methods, apparatus and techniques for obtaining a plurality of output signals associated with different sources (e.g. audio sources). In one example, it is possible to: combine a first input signal, or a processed version thereof, with a delayed and scaled version of a second input signal, to obtain a first output signal; and combine a second input signal, or a processed version thereof, with a delayed and scaled version of the first input signal, to obtain a second output signal. It is possible to determine, e.g. using a random direction optimization: scaling values, to obtain the delayed and scaled versions of the first and second input signals; and delay values, to obtain the delayed and scaled versions of the first and second input signals.Type: ApplicationFiled: March 31, 2022Publication date: July 21, 2022Inventor: Gerald SCHULLER
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Publication number: 20210272577Abstract: An encoder for providing an audio stream on the basis of a transform-domain representation of an input audio signal includes a quantization error calculator configured to determine a multi-band quantization error over a plurality of frequency bands of the input audio signal for which separate band gain information is available. The encoder also includes an audio stream provider for providing the audio stream such that the audio stream includes information describing an audio content of the frequency bands and information describing the multi-band quantization error. A decoder for providing a decoded representation of an audio signal on the basis of an encoded audio stream representing spectral components of frequency bands of the audio signal includes a noise filler for introducing noise into spectral components of a plurality of frequency bands to which separate frequency band gain information is associated on the basis of a common multi-band noise intensity value.Type: ApplicationFiled: May 17, 2021Publication date: September 2, 2021Applicant: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung e.V.Inventors: Nikolaus RETTELBACH, Bernhard GRILL, Guillaume FUCHS, Stefan GEYERSBERGER, Markus MULTRUS, Harald POPP, Juergen HERRE, Stefan WABNIK, Gerald SCHULLER, Jens HIRSCHFELD
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Patent number: 11024323Abstract: An encoder for providing an audio stream on the basis of a transform-domain representation of an input audio signal includes a quantization error calculator configured to determine a multi-band quantization error over a plurality of frequency bands of the input audio signal for which separate band gain information is available. The encoder also includes an audio stream provider for providing the audio stream such that the audio stream includes information describing an audio content of the frequency bands and information describing the multi-band quantization error. A decoder for providing a decoded representation of an audio signal on the basis of an encoded audio stream representing spectral components of frequency bands of the audio signal includes a noise filler for introducing noise into spectral components of a plurality of frequency bands to which separate frequency band gain information is associated on the basis of a common multi-band noise intensity value.Type: GrantFiled: July 7, 2017Date of Patent: June 1, 2021Assignee: Fraunhofer-Gesellschaft zur Fcerderung der angewandten Forschung e.V.Inventors: Nikolaus Rettelbach, Bernhard Grill, Guillaume Fuchs, Stefan Geyersberger, Markus Multrus, Harald Popp, Juergen Herre, Stefan Wabnik, Gerald Schuller, Jens Hirschfeld
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Patent number: 10629215Abstract: An encoder for providing an audio stream on the basis of a transform-domain representation of an input audio signal includes a quantization error calculator configured to determine a multi-band quantization error over a plurality of frequency bands of the input audio signal for which separate band gain information is available. The encoder also includes an audio stream provider for providing the audio stream such that the audio stream includes information describing an audio content of the frequency bands and information describing the multi-band quantization error. A decoder for providing a decoded representation of an audio signal on the basis of an encoded audio stream representing spectral components of frequency bands of the audio signal includes a noise filler for introducing noise into spectral components of a plurality of frequency bands to which separate frequency band gain information is associated on the basis of a common multi-band noise intensity value.Type: GrantFiled: September 15, 2016Date of Patent: April 21, 2020Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Nikolaus Rettelbach, Bernhard Grill, Guillaume Fuchs, Stefan Geyersberger, Markus Multrus, Harald Popp, Juergen Herre, Stefan Wabnik, Gerald Schuller, Jens Hirschfeld
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Patent number: 10446162Abstract: A very coarse quantization exceeding the measure determined by the masking threshold without or only very little quality losses is enabled by quantizing not immediately the prefiltered signal, but a prediction error obtained by forward-adaptive prediction of the prefiltered signal. Due to the forward adaptivity, the quantizing error has no negative effect on the prediction on the decoder side.Type: GrantFiled: July 26, 2017Date of Patent: October 15, 2019Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Jens Hirschfeld, Gerald Schuller, Manfred Lutzky, Ulrich Kraemer, Stefan Wabnik
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Publication number: 20180012608Abstract: A very coarse quantization exceeding the measure determined by the masking threshold without or only very little quality losses is enabled by quantizing not immediately the prefiltered signal, but a prediction error obtained by forward-adaptive prediction of the prefiltered signal. Due to the forward adaptivity, the quantizing error has no negative effect on the prediction on the decoder side.Type: ApplicationFiled: July 26, 2017Publication date: January 11, 2018Inventors: Jens HIRSCHFELD, Gerald Schuller, Manfred Lutzky, Ulrich Kraemer, Stefan WABNIK
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Publication number: 20170309283Abstract: An encoder for providing an audio stream on the basis of a transform-domain representation of an input audio signal includes a quantization error calculator configured to determine a multi-band quantization error over a plurality of frequency bands of the input audio signal for which separate band gain information is available. The encoder also includes an audio stream provider for providing the audio stream such that the audio stream includes information describing an audio content of the frequency bands and information describing the multi-band quantization error. A decoder for providing a decoded representation of an audio signal on the basis of an encoded audio stream representing spectral components of frequency bands of the audio signal includes a noise filler for introducing noise into spectral components of a plurality of frequency bands to which separate frequency band gain information is associated on the basis of a common multi-band noise intensity value.Type: ApplicationFiled: July 7, 2017Publication date: October 26, 2017Applicant: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung e.V.Inventors: Nikolaus RETTELBACH, Bernhard GRILL, Guillaume FUCHS, Stefan GEYERSBERGER, Markus MULTRUS, Harald POPP, Juergen HERRE, Stefan WABNIK, Gerald SCHULLER, Jens HIRSCHFELD
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Patent number: 9754601Abstract: A very coarse quantization exceeding the measure determined by the masking threshold without or only very little quality losses is enabled by quantizing not immediately the prefiltered signal, but a prediction error obtained by forward-adaptive prediction of the prefiltered signal. Due to the forward adaptivity, the quantizing error has no negative effect on the prediction on the decoder side.Type: GrantFiled: February 28, 2007Date of Patent: September 5, 2017Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Jens Hirschfeld, Gerald Schuller, Manfred Lutzky, Ulrich Kraemer, Stefan Wabnik
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Patent number: 9711157Abstract: An encoder for providing an audio stream on the basis of a transform-domain representation of an input audio signal includes a quantization error calculator configured to determine a multi-band quantization error over a plurality of frequency bands of the input audio signal for which separate band gain information is available. The encoder also includes an audio stream provider for providing the audio stream such that the audio stream includes information describing an audio content of the frequency bands and information describing the multi-band quantization error. A decoder for providing a decoded representation of an audio signal on the basis of an encoded audio stream representing spectral components of frequency bands of the audio signal includes a noise filler for introducing noise into spectral components of a plurality of frequency bands to which separate frequency band gain information is associated on the basis of a common multi-band noise intensity value.Type: GrantFiled: December 24, 2014Date of Patent: July 18, 2017Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Nikolaus Rettelbach, Bernhard Grill, Guillaume Fuchs, Stefan Geyersberger, Markus Multrus, Harald Popp, Juergen Herre, Stefan Wabnik, Gerald Schuller, Jens Hirschfeld
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Patent number: 9659566Abstract: For generating a signal to be transmitted original information is encoded into a main channel and a side channel, wherein the side channel is more robust against channel influences than the main channel. On the receiver side, when the receive quality is above a threshold, which is necessitated to execute a successful decoding of the main channel, the main channel is reproduced. If the receive quality falls below this threshold, however, the side channel is reproduced which may have less bits than the main channel and which is a correspondingly lower quality representation of the original information than the main channel.Type: GrantFiled: May 27, 2015Date of Patent: May 23, 2017Assignee: FAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V.Inventors: Gerald Schuller, Stefan Wabnik, Bernhard Grill, Alexander Zink
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Patent number: 9646632Abstract: An audio encoder has a window function controller, a windower, a time warper with a final quality check functionality, a time/frequency converter, a TNS stage or a quantizer encoder, the window function controller, the time warper, the TNS stage or an additional noise filling analyzer are controlled by signal analysis results obtained by a time warp analyzer or a signal classifier. Furthermore, a decoder applies a noise filling operation using a manipulated noise filling estimate depending on a harmonic or speech characteristic of the audio signal.Type: GrantFiled: November 11, 2014Date of Patent: May 9, 2017Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Stefan Bayer, Sascha Disch, Ralf Geiger, Guillaume Fuchs, Max Neuendorf, Gerald Schuller, Bernd Edler
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Publication number: 20170004839Abstract: An encoder for providing an audio stream on the basis of a transform-domain representation of an input audio signal includes a quantization error calculator configured to determine a multi-band quantization error over a plurality of frequency bands of the input audio signal for which separate band gain information is available. The encoder also includes an audio stream provider for providing the audio stream such that the audio stream includes information describing an audio content of the frequency bands and information describing the multi-band quantization error. A decoder for providing a decoded representation of an audio signal on the basis of an encoded audio stream representing spectral components of frequency bands of the audio signal includes a noise filler for introducing noise into spectral components of a plurality of frequency bands to which separate frequency band gain information is associated on the basis of a common multi-band noise intensity value.Type: ApplicationFiled: September 15, 2016Publication date: January 5, 2017Applicant: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung e.V.Inventors: Nikolaus RETTELBACH, Bernhard GRILL, Guillaume FUCHS, Stefan GEYERSBERGER, Markus MULTRUS, Harald POPP, Juergen HERRE, Stefan WABNIK, Gerald SCHULLER, Jens HIRSCHFELD
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Patent number: 9514767Abstract: A device for producing a frequency-shifted audio signal based on an audio input signal is provided. The device has an interface and a frequency-shifting unit. The interface is configured for receiving the audio input signal. The frequency-shifting unit is configured for producing the frequency-shifted audio signal. The frequency-shifting unit is additionally configured to produce one of the second subband values based on one of the first subband values such that the second phase angle of this second subband value differs from the first phase angle of this first subband value by a phase angle difference, the phase angle difference being dependent on frequency information indicating by which frequency difference the audio input signal is to be shifted in order to obtain the frequency-shifted audio signal, and the phase angle difference being dependent on a frequency bandwidth of one of the first subbands.Type: GrantFiled: December 31, 2014Date of Patent: December 6, 2016Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Frederik Nagel, Michael Schnabel, Christian Neukam, Gerald Schuller
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Patent number: 9502049Abstract: An audio encoder has a window function controller, a windower, a time warper with a final quality check functionality, a time/frequency converter, a TNS stage or a quantizer encoder, the window function controller, the time warper, the TNS stage or an additional noise filling analyzer are controlled by signal analysis results obtained by a time warp analyzer or a signal classifier. Furthermore, a decoder applies a noise filling operation using a manipulated noise filling estimate depending on a harmonic or speech characteristic of the audio signal.Type: GrantFiled: November 11, 2014Date of Patent: November 22, 2016Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Stefan Bayer, Sascha Disch, Ralf Geiger, Guillaume Fuchs, Max Neuendorf, Gerald Schuller, Bernd Edler
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Patent number: 9466313Abstract: An audio encoder has a window function controller, a windower, a time warper with a final quality check functionality, a time/frequency converter, a TNS stage or a quantizer encoder, the window function controller, the time warper, the TNS stage or an additional noise filling analyzer are controlled by signal analysis results obtained by a time warp analyzer or a signal classifier. Furthermore, a decoder applies a noise filling operation using a manipulated noise filling estimate depending on a harmonic or speech characteristic of the audio signal.Type: GrantFiled: November 11, 2014Date of Patent: October 11, 2016Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Stefan Bayer, Sascha Disch, Ralf Geiger, Guillaume Fuchs, Max Neuendorf, Gerald Schuller, Bernd Edler
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Patent number: 9449606Abstract: An encoder for providing an audio stream on the basis of a transform-domain representation of an input audio signal includes a quantization error calculator configured to determine a multi-band quantization error over a plurality of frequency bands of the input audio signal for which separate band gain information is available. The encoder also includes an audio stream provider for providing the audio stream such that the audio stream includes information describing an audio content of the frequency bands and information describing the multi-band quantization error. A decoder for providing a decoded representation of an audio signal on the basis of an encoded audio stream representing spectral components of frequency bands of the audio signal includes a noise filler for introducing noise into spectral components of a plurality of frequency bands to which separate frequency band gain information is associated on the basis of a common multi-band noise intensity value.Type: GrantFiled: January 16, 2014Date of Patent: September 20, 2016Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Nikolaus Rettelbach, Bernhard Grill, Guillaume Fuchs, Stefan Geyersberger, Markus Multrus, Harald Popp, Juergen Herre, Stefan Wabnik, Gerald Schuller, Jens Hirschfeld
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Patent number: 9431026Abstract: An audio encoder has a window function controller, a windower, a time warper with a final quality check functionality, a time/frequency converter, a TNS stage or a quantizer encoder, the window function controller, the time warper, the TNS stage or an additional noise filling analyzer are controlled by signal analysis results obtained by a time warp analyzer or a signal classifier. Furthermore, a decoder applies a noise filling operation using a manipulated noise filling estimate depending on a harmonic or speech characteristic of the audio signal.Type: GrantFiled: November 11, 2014Date of Patent: August 30, 2016Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Stefan Bayer, Sascha Disch, Ralf Geiger, Guillaume Fuchs, Max Neuendorf, Gerald Schuller, Bernd Edler