Patents by Inventor Syavosh Zad-Issa
Syavosh Zad-Issa 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: 9837102Abstract: Examples of the disclosure describe user environment aware single channel acoustic noise reduction. A noisy signal received by a computing device is transformed and feature vectors of the received noisy signal are determined. The computing device accesses classification data corresponding to a plurality of user environments. The classification data for each user environment has associated therewith a noise model. A comparison is performed between the determined feature vectors and the accessed classification data to identify a current user environment. A noise level, a speech level, and a speech presence probability from the transformed noisy signal are estimated and the noise signal is reduced based on the estimates. The resulting signal is outputted as an enhanced signal with a reduced or eliminated noise signal.Type: GrantFiled: July 2, 2014Date of Patent: December 5, 2017Assignee: Microsoft Technology Licensing, LLCInventors: Syavosh Zad Issa, Youhong Lu, Rod G. Fleck, Hundraj S. Gopal
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Patent number: 9691413Abstract: Methods and systems for identifying sound from a source of interest are provided for herein. In some embodiments, a first audio feed is captured by a first microphone and a second audio feed is captured by a second microphone. The first microphone may be located closer in proximity to the source of interest than the second microphone. The first audio feed can be processed utilizing the second audio feed to produce a first processed audio feed that can enable identification of sound originating from the source of interest. In some embodiments, the second audio feed can be additionally processed utilizing the first audio feed to produce a second processed audio feed. In such embodiments, frequencies from the first processed audio feed can be compared against frequencies of the second processed audio feed to identify sound originating from the source of interest. Other embodiments may be described and/or claimed herein.Type: GrantFiled: October 6, 2015Date of Patent: June 27, 2017Assignee: Microsoft Technology Licensing, LLCInventor: Syavosh Zad Issa
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Publication number: 20170098457Abstract: Methods and systems for identifying sound from a source of interest are provided for herein. In some embodiments, a first audio feed is captured by a first microphone and a second audio feed is captured by a second microphone. The first microphone may be located closer in proximity to the source of interest than the second microphone. The first audio feed can be processed utilizing the second audio feed to produce a first processed audio feed that can enable identification of sound originating from the source of interest. In some embodiments, the second audio feed can be additionally processed utilizing the first audio feed to produce a second processed audio feed. In such embodiments, frequencies from the first processed audio feed can be compared against frequencies of the second processed audio feed to identify sound originating from the source of interest. Other embodiments may be described and/or claimed herein.Type: ApplicationFiled: October 6, 2015Publication date: April 6, 2017Inventor: Syavosh Zad Issa
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Patent number: 9596437Abstract: Various technologies are applied to focus audio received from a plurality of microphones of a mobile device. A camera can be used to portray a scene, and a selection within the scene can focus audio to a desired audio focus region. Techniques can account for movement of the mobile device or an object being tracked. Pre-computed audio filters can be used to customize the audio focus process to account for a particular mobile device geometry.Type: GrantFiled: August 21, 2013Date of Patent: March 14, 2017Assignee: Microsoft Technology Licensing, LLCInventors: Syavosh Zad Issa, Rod G. Fleck
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Patent number: 9344579Abstract: Examples of the disclosure provide variable step size (VSS) adaptive echo cancellation in the presence of near-end noise such as dense double talk without using an explicit double talk detector and/or without using a dual-filter. During a conversation, the present value for an error signal is monitored. Based on the monitored present value for the error signal, a first function is determined. A second function is determined based on long-term statistics describing a reference signal, a near-end noise signal, and the error signal. An adaptation coefficient is calculated for the VSS adaptive filter based on the determined first function and the determined second function. The calculated adaptation coefficient is used in the VSS adaptive filter for echo cancellation against interference due to the near-end noise signal during the conversation.Type: GrantFiled: July 2, 2014Date of Patent: May 17, 2016Assignee: Microsoft Technology Licensing, LLCInventors: Youhong Lu, Syavosh Zad Issa
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Patent number: 9253568Abstract: A technique for suppressing non-stationary noise, such as wind noise, in an audio signal is described. In accordance with the technique, a series of frames of the audio signal is analyzed to detect whether the audio signal comprises non-stationary noise. If it is detected that the audio signal comprises non-stationary noise, a number of steps are performed. In accordance with these steps, a determination is made as to whether a frame of the audio signal comprises non-stationary noise or speech and non-stationary noise. If it is determined that the frame comprises non-stationary noise, a first filter is applied to the frame and if it is determined that the frame comprises speech and non-stationary noise, a second filter is applied to the frame.Type: GrantFiled: May 14, 2010Date of Patent: February 2, 2016Assignee: Broadcom CorporationInventors: Elias Nemer, Wilfrid LeBlanc, Syavosh Zad-Issa, Jes Thyssen
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Publication number: 20160005422Abstract: Examples of the disclosure describe user environment aware single channel acoustic noise reduction. A noisy signal received by a computing device is transformed and feature vectors of the received noisy signal are determined. The computing device accesses classification data corresponding to a plurality of user environments. The classification data for each user environment has associated therewith a noise model. A comparison is performed between the determined feature vectors and the accessed classification data to identify a current user environment. A noise level, a speech level, and a speech presence probability from the transformed noisy signal are estimated and the noise signal is reduced based on the estimates. The resulting signal is outputted as an enhanced signal with a reduced or eliminated noise signal.Type: ApplicationFiled: July 2, 2014Publication date: January 7, 2016Inventors: Syavosh Zad Issa, Youhong Lu, Rod G. Fleck, Hundraj S. Gopal
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Publication number: 20160006880Abstract: Examples of the disclosure provide variable step size (VSS) adaptive echo cancellation in the presence of near-end noise such as dense double talk without using an explicit double talk detector and/or without using a dual-filter. During a conversation, the present value for an error signal is monitored. Based on the monitored present value for the error signal, a first function is determined. A second function is determined based on long-term statistics describing a reference signal, a near-end noise signal, and the error signal. An adaptation coefficient is calculated for the VSS adaptive filter based on the determined first function and the determined second function. The calculated adaptation coefficient is used in the VSS adaptive filter for echo cancellation against interference due to the near-end noise signal during the conversation.Type: ApplicationFiled: July 2, 2014Publication date: January 7, 2016Inventors: Youhong Lu, Syavosh Zad Issa
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Publication number: 20150054943Abstract: Various technologies are applied to focus audio received from a plurality of microphones of a mobile device. A camera can be used to portray a scene, and a selection within the scene can focus audio to a desired audio focus region. Techniques can account for movement of the mobile device or an object being tracked. Pre-computed audio filters can be used to customize the audio focus process to account for a particular mobile device geometry.Type: ApplicationFiled: August 21, 2013Publication date: February 26, 2015Inventors: Syavosh Zad Issa, Rod G. Fleck
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Patent number: 8190440Abstract: A system and method for providing an augmented version of a Low-Complexity Sub-band Coder (LC-SBC) is described herein. In accordance with the method, a series of input audio samples representative of the frame are received. A series of sub-band samples is generated for each of a plurality of frequency sub-bands based on the input audio samples. A determination is made as to whether the frame is a voice frame or a noise frame. Responsive to a determination that the frame is a noise frame, an index representative of a previously-processed series of sub-band samples stored in a history buffer for at least one of the frequency sub-bands is encoded instead of encoding the series of sub-band samples generated for the frequency sub-band.Type: GrantFiled: February 27, 2009Date of Patent: May 29, 2012Assignee: Broadcom CorporationInventors: Laurent Pilati, Syavosh Zad-Issa
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Publication number: 20100223054Abstract: A technique for suppressing non-stationary noise, such as wind noise, in an audio signal is described. In accordance with the technique, a series of frames of the audio signal is analyzed to detect whether the audio signal comprises non-stationary noise. If it is detected that the audio signal comprises non-stationary noise, a number of steps are performed. In accordance with these steps, a determination is made as to whether a frame of the audio signal comprises non-stationary noise or speech and non-stationary noise. If it is determined that the frame comprises non-stationary noise, a first filter is applied to the frame and if it is determined that the frame comprises speech and non-stationary noise, a second filter is applied to the frame.Type: ApplicationFiled: May 14, 2010Publication date: September 2, 2010Applicant: BROADCOM CORPORATIONInventors: Elias Nemer, Wilfrid LeBlanc, Syavosh Zad-Issa, Jes Thyssen
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Publication number: 20090222264Abstract: An augmented version of a Low-Complexity Sub-band Coder (LC-SBC) is described herein that is better suited than conventional LC-SBC for wideband voice communication in the Bluetoothâ„¢ framework, where minimizing the power consumption is of paramount importance. The augmented version of LC-SBC utilizes certain techniques associated with speech coding, such as Voice Activity Detection (VAD), to reduce bandwidth usage and power consumption while maintaining voice quality. The augmented version of LC-SBC reduces the average bit rate used for transmitting wideband speech in a manner that does not add significant computational complexity. Furthermore, the augmented version of LC-SBC may advantageously be implemented in a manner that does not require any modification of the underlying logic/structure of LC-SBC.Type: ApplicationFiled: February 27, 2009Publication date: September 3, 2009Applicant: BROADCOM CORPORATIONInventors: Laurent Pilati, Syavosh Zad-Issa