Patents by Inventor Robert Höldrich
Robert Höldrich 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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Patent number: 10785588Abstract: A method for acoustic scene playback is described, which comprises: providing recording data comprising microphone signals of microphone setups positioned within an acoustic scene and microphone metadata of the microphone setups, each of the microphone setups has a recording spot which is a center position of the respective microphone setup; specifying a virtual listening position within the acoustic scene; assigning each microphone setup Virtual Loudspeaker Objects, VLOs, wherein each VLO is an abstract sound output object within a virtual free field; generating an encoded data stream based on the recording data, the virtual listening position and VLO parameters of the VLOs assigned to the microphone setups; and decoding the encoded data stream based on a playback setup, thereby generating a decoded data stream; and feeding the decoded data stream to a rendering device, thereby driving the rendering device to reproduce sound of the acoustic scene at the virtual listening position.Type: GrantFiled: April 24, 2019Date of Patent: September 22, 2020Assignee: Huawei Technologies Co., Ltd.Inventors: Peter Grosche, Franz Zotter, Christian Schörkhuber, Matthias Frank, Robert Höldrich
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Patent number: 10602267Abstract: A sound signal processing apparatus including a plurality of microphones, where each microphone is configured to receive the sound signal from the target source, a processor configured to estimate a first power measure on the basis of the sound signal from the target source received by a first microphone of the microphones and a second power measure on the basis of the sound signal from the target source received by at least a second microphone of the microphones, which is located more distant from the target source than the first microphone, and the processor is further configured to determine a gain factor on the basis of a ratio between the second power measure and the first power measure, and an amplifier configured to apply the gain factor to the sound signal from the target source received by the first microphone.Type: GrantFiled: May 14, 2018Date of Patent: March 24, 2020Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Peter Grosche, Karim Helwani, Christian Schörkhuber, Franz Zotter, Robert Höldrich, Matthias Frank
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Publication number: 20190253826Abstract: A method for acoustic scene playback is described, which comprises: providing recording data comprising microphone signals of microphone setups positioned within an acoustic scene and microphone metadata of the microphone setups, each of the microphone setups has a recording spot which is a center position of the respective microphone setup; specifying a virtual listening position within the acoustic scene; assigning each microphone setup Virtual Loudspeaker Objects, VLOs, wherein each VLO is an abstract sound output object within a virtual free field; generating an encoded data stream based on the recording data, the virtual listening position and VLO parameters of the VLOs assigned to the microphone setups; and decoding the encoded data stream based on a playback setup, thereby generating a decoded data stream; and feeding the decoded data stream to a rendering device, thereby driving the rendering device to reproduce sound of the acoustic scene at the virtual listening position.Type: ApplicationFiled: April 24, 2019Publication date: August 15, 2019Inventors: Peter GROSCHE, Franz ZOTTER, Christian SCHÖRKHUBER, Matthias FRANK, Robert HÖLDRICH
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Publication number: 20180262832Abstract: A sound signal processing apparatus including a plurality of microphones, where each microphone is configured to receive the sound signal from the target source, a processor configured to estimate a first power measure on the basis of the sound signal from the target source received by a first microphone of the microphones and a second power measure on the basis of the sound signal from the target source received by at least a second microphone of the microphones, which is located more distant from the target source than the first microphone, and the processor is further configured to determine a gain factor on the basis of a ratio between the second power measure and the first power measure, and an amplifier configured to apply the gain factor to the sound signal from the target source received by the first microphone.Type: ApplicationFiled: May 14, 2018Publication date: September 13, 2018Inventors: Peter Grosche, Karim Helwani, Christian Schörkhuber, Franz Zotter, Robert Höldrich, Matthias Frank
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Patent number: 9549249Abstract: The disclosed active noise suppression headphone system is directed to a headphone system that is capable of substantially suppressing high or low frequency interfering noise that penetrate through a headphone earpiece from multiple directions. An external microphone mounted with a housing of a headphone earpiece senses ambient noise outside of the earpiece. The sensed ambient noise may be processed through at least one parallel filter bank arranged in at least one headphone earpiece. Each parallel filter bank may include adaptively linked filters. The output of these filters may be amplified based on weighting factors that are dependent upon the sensed ambient noise and that are generated by a filtered x least mean square circuit. The amplified filtered outputs may be summed to generate an antinoise signal that is in input to a loudspeaker within the headphone earpiece that substantial suppresses the ambient noise before it can be perceived by an end user of the headphones.Type: GrantFiled: June 20, 2013Date of Patent: January 17, 2017Assignee: AKG Acoustics GmbHInventors: Alois Sontacchi, Robert Höldrich, Markus Flock
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Publication number: 20160353202Abstract: The disclosed active noise suppression headphone system is directed to a headphone system that is capable of substantially suppressing high or low frequency interfering noise that penetrate through a headphone earpiece from multiple directions. An external microphone mounted with a housing of a headphone earpiece senses ambient noise outside of the earpiece. The sensed ambient noise may be processed through at least one parallel filter bank arranged in at least one headphone earpiece. Each parallel filter bank may include adaptively linked filters. The output of these filters may be amplified based on weighting factors that are dependent upon the sensed ambient noise and that are generated by a filtered x least mean square circuit. The amplified filtered outputs may be summed to generate an antinoise signal that is in input to a loudspeaker within the headphone earpiece that substantial suppresses the ambient noise before it can be perceived by an end user of the headphones.Type: ApplicationFiled: June 20, 2013Publication date: December 1, 2016Applicant: AKG Acoustics GmbHInventors: Alois Sontacchi, Robert Höldrich, Markus Flock
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Publication number: 20130343557Abstract: The disclosed active noise suppression headphone system is directed to a headphone system that is capable of substantially suppressing high or low frequency interfering noise that penetrate through a headphone earpiece from multiple directions. An external microphone mounted with a housing of a headphone earpiece senses ambient noise outside of the earpiece. The sensed ambient noise may be processed through at least one parallel filter bank arranged in at least one headphone earpiece. Each parallel filter bank may include adaptively linked filters. The output of these filters may be amplified based on weighting factors that are dependent upon the sensed ambient noise and that are generated by a filtered x least mean square circuit. The amplified filtered outputs may be summed to generate an antinoise signal that is in input to a loudspeaker within the headphone earpiece that substantial suppresses the ambient noise before it can be perceived by an end user of the headphones.Type: ApplicationFiled: June 20, 2013Publication date: December 26, 2013Applicant: AKG Acoustics GmbHInventors: Alois Sontacchi, Robert Höldrich, Markus Guldenschuh
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Patent number: 8260608Abstract: A method conceals dropouts in one or more audio channels of a multi-channel arrangement. The method maps transmitted signals into a frequency domain during an error-free signal transmission of two or more channels. A magnitude spectra and spectral filter coefficients are derived. The spectral filter coefficients relate the magnitude spectrum of the audio channel to the magnitude spectrum of at least one other channel. When a dropout occurs, a replacement signal is generated through the filter coefficients and a substitution signal. The filter coefficients may be generated prior to the detection of the dropout.Type: GrantFiled: June 5, 2009Date of Patent: September 4, 2012Assignee: AKG Acoustics GmbHInventors: Martin Opitz, Cornelia Falch, Robert Höldrich
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Publication number: 20090204359Abstract: A method for determining the contributions of individual sound transmission paths to the operation-dependent total noise of a sound transmitting structure includes the following steps: applying at least one acceleration sensor and/or source microphone in the area of each sound input position; applying at least one target microphone and/or acceleration sensor in the area of a receiving position; carrying out at least one simultaneous measurement of sound pressure and/or acceleration at the receiving position and of acceleration and/or sound pressure at each sound input position during operation; determining at least one acceleration-to-pressure and/or acceleration-to-acceleration sensitivity function and/or at least one pressure-to-pressure sensitivity function; determining reciprocally measured frequency response functions between each sound input position and each receiving position; determining the inertances in the operational state for at least one sound input position; determining of at least one forcType: ApplicationFiled: February 4, 2009Publication date: August 13, 2009Inventors: Robert Hoeldrich, Alois Sontacchi, Stephan Brandl