Patents by Inventor Venkatraman Atti
Venkatraman Atti 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: 20240161757Abstract: An apparatus includes a receiver and a decoder. The receiver is configured to receive a bitstream that includes a first frame and a second frame. The first frame includes a first portion of a mid channel and a first quantized stereo parameter. The second frame includes a second portion of the mid channel and a second quantized stereo parameter. The decoder is configured to generate a first portion of a channel based on the first portion of the mid channel and the first quantized stereo parameter. The decoder is configured to, in response to the second frame being unavailable for decoding operations, estimate the second quantized stereo parameter based on stereo parameters of one or more preceding frames and generate a second portion of the channel based on the estimated second quantized stereo parameter. The second portion of the channel corresponds to a decoded version of the second frame.Type: ApplicationFiled: November 17, 2023Publication date: May 16, 2024Inventors: Venkata Subrahmanyam Chandra Sekhar CHEBIYYAM, Venkatraman ATTI
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Publication number: 20240031755Abstract: An apparatus includes a receiver and an up-mixer. The receiver is configured to receive a bitstream that includes an encoded mid signal and encoded stereo parameter information. The encoded stereo parameter information represents a first value of a stereo parameter and a second value of the stereo parameter. The first value is associated with a first frequency range. The second value is associated with a second frequency range that is distinct from the first frequency range. The up-mixer is configured to perform an up-mix operation on a frequency-domain decoded mid signal generated from the encoded mid signal. A particular value based on the first value and the second value is applied to the frequency-domain decoded mid signal during the up-mix operation.Type: ApplicationFiled: June 15, 2023Publication date: January 25, 2024Inventors: Venkata Subrahmanyam Chandra Sekhar CHEBIYYAM, Venkatraman ATTI
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Patent number: 11823689Abstract: An apparatus includes a receiver and a decoder. The receiver is configured to receive a bitstream that includes a first frame and a second frame. The first frame includes a first portion of a mid channel and a first quantized stereo parameter. The second frame includes a second portion of the mid channel and a second quantized stereo parameter. The decoder is configured to generate a first portion of a channel based on the first portion of the mid channel and the first quantized stereo parameter. The decoder is configured to, in response to the second frame being unavailable for decoding operations, estimate the second quantized stereo parameter based on stereo parameters of one or more preceding frames and generate a second portion of the channel based on the estimated second quantized stereo parameter. The second portion of the channel corresponds to a decoded version of the second frame.Type: GrantFiled: December 20, 2021Date of Patent: November 21, 2023Assignee: QUALCOMM IncorporatedInventors: Venkata Subrahmanyam Chandra Sekhar Chebiyyam, Venkatraman Atti
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Patent number: 11716584Abstract: An apparatus includes a receiver and an up-mixer. The receiver is configured to receive a bitstream that includes an encoded mid signal and encoded stereo parameter information. The encoded stereo parameter information represents a first value of a stereo parameter and a second value of the stereo parameter. The first value is associated with a first frequency range. The second value is associated with a second frequency range that is distinct from the first frequency range. The up-mixer is configured to perform an up-mix operation on a frequency-domain decoded mid signal generated from the encoded mid signal. A particular value based on the first value and the second value is applied to the frequency-domain decoded mid signal during the up-mix operation.Type: GrantFiled: August 23, 2021Date of Patent: August 1, 2023Assignee: QUALCOMM IncorporatedInventors: Venkata Subrahmanyam Chandra Sekhar Chebiyyam, Venkatraman Atti
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Patent number: 11705138Abstract: A method includes generating a synthesized non-reference high-band channel based on a non-reference high-band excitation corresponding to a non-reference target channel. The method further includes estimating one or more spectral mapping parameters based on the synthesized non-reference high-band channel and a high-band portion of the non-reference target channel. The method also includes applying the one or more spectral mapping parameters to the synthesized non-reference high-band channel to generate a spectrally shaped synthesized non-reference high-band channel. The method further includes generating an encoded bitstream based on the one or more spectral mapping parameters and the spectrally shaped synthesized non-reference high-band channel.Type: GrantFiled: December 11, 2020Date of Patent: July 18, 2023Assignee: QUALCOMM IncorporatedInventors: Venkata Subrahmanyam Chandra Sekhar Chebiyyam, Venkatraman Atti
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Patent number: 11538484Abstract: A device includes an encoder configured to generate a first high-band portion of a first signal based on a left signal and a right signal. The encoder is also configured to generate a set of adjustment gain parameters based on a high-band non-reference signal and a synthesized signal. The high-band non-reference signal corresponds to one of a left high-band portion of the left signal or a right high-band portion of the right signal.Type: GrantFiled: March 1, 2021Date of Patent: December 27, 2022Assignee: QUALCOMM IncorporatedInventors: Venkatraman Atti, Venkata Subrahmanyam Chandra Sekhar Chebiyyam
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Publication number: 20220406319Abstract: A device for signal processing includes a memory and a processor. The memory is configured to store a parameter associated with a bandwidth-extended audio stream. The processor is configured to select a plurality of non-linear processing functions based at least in part on a value of the parameter. The processor is also configured to generate a high-band excitation signal based on the plurality of non-linear processing functions.Type: ApplicationFiled: August 19, 2022Publication date: December 22, 2022Inventors: Venkatraman ATTI, Venkata Subrahmanyam Chandra Sekhar CHEBIYYAM
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Patent number: 11437049Abstract: A device for signal processing includes a memory and a processor. The memory is configured to store a parameter associated with a bandwidth-extended audio stream. The processor is configured to select a plurality of non-linear processing functions based at least in part on a value of the parameter. The processor is also configured to generate a high-band excitation signal based on the plurality of non-linear processing functions.Type: GrantFiled: October 28, 2020Date of Patent: September 6, 2022Assignee: QUALCOMM IncorporatedInventors: Venkatraman Atti, Venkata Subrahmanyam Chandra Sekhar Chebiyyam
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Patent number: 11430452Abstract: A device includes a receiver and a decoder. The receiver is configured to receive bitstream parameters corresponding to at least an encoded mid signal. The decoder is configured to generate a synthesized mid signal based on the bitstream parameters. The decoder is also configured to generate a synthesized side signal selectively based on the bitstream parameters in response to determining whether the bitstream parameters correspond to an encoded side signal.Type: GrantFiled: October 18, 2019Date of Patent: August 30, 2022Assignee: Qualcomm IncorporatedInventors: Venkata Subrahmanyam Chandra Sekhar Chebiyyam, Venkatraman Atti
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Publication number: 20220139410Abstract: A device for signal processing includes a memory and a processor. The memory is configured to store a parameter associated with a bandwidth-extended audio stream. The processor is configured to select a plurality of non-linear processing functions based at least in part on a value of the parameter. The processor is also configured to generate a high-band excitation signal based on the plurality of non-linear processing functions.Type: ApplicationFiled: October 28, 2020Publication date: May 5, 2022Inventors: Venkatraman ATTI, Venkata Subrahmanyam Chandra Sekhar CHEBIYYAM
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Patent number: 11205436Abstract: An apparatus includes a receiver and a decoder. The receiver is configured to receive a bitstream that includes a first frame and a second frame. The first frame includes a first portion of a mid channel and a first quantized stereo parameter. The second frame includes a second portion of the mid channel and a second quantized stereo parameter. The decoder is configured to generate a first portion of a channel based on the first portion of the mid channel and the first quantized stereo parameter. The decoder is configured to, in response to the second frame being unavailable for decoding operations, estimate the second quantized stereo parameter based on stereo parameters of one or more preceding frames and generate a second portion of the channel based on the estimated second quantized stereo parameter. The second portion of the channel corresponds to a decoded version of the second frame.Type: GrantFiled: July 1, 2020Date of Patent: December 21, 2021Assignee: QUALCOMM IncorporatedInventors: Venkata Subrahmanyam Chandra Sekhar Chebiyyam, Venkatraman Atti
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Publication number: 20210385601Abstract: An apparatus includes a receiver and an up-mixer. The receiver is configured to receive a bitstream that includes an encoded mid signal and encoded stereo parameter information. The encoded stereo parameter information represents a first value of a stereo parameter and a second value of the stereo parameter. The first value is associated with a first frequency range. The second value is associated with a second frequency range that is distinct from the first frequency range. The up-mixer is configured to perform an up-mix operation on a frequency-domain decoded mid signal generated from the encoded mid signal. A particular value based on the first value and the second value is applied to the frequency-domain decoded mid signal during the up-mix operation.Type: ApplicationFiled: August 23, 2021Publication date: December 9, 2021Inventors: Venkata Subrahmanyam Chandra Sekhar CHEBIYYAM, Venkatraman Atti
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Patent number: 11127406Abstract: A device for processing audio signals includes an interchannel phase difference (IPD) mode selector and an IPD estimator. The IPD mode selector is configured to select an IPD mode from among at least a first IPD mode and a second IPD mode based on at least an interchannel temporal mismatch value indicative of a temporal misalignment between a first audio signal and a second audio signal. The IPD estimator is configured to determine IPD values based on the first audio signal and the second audio signal, the IPD values represented using a first number of bits responsive to selection of the first IPD mode or represented using a second number of bits responsive to selection of the second IPD mode.Type: GrantFiled: November 13, 2019Date of Patent: September 21, 2021Assignee: Qualcomm IncorproatedInventors: Venkata Subrahmanyam Chandra Sekhar Chebiyyam, Venkatraman Atti
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Patent number: 11102600Abstract: An apparatus includes a receiver and an up-mixer. The receiver is configured to receive a bitstream that includes an encoded mid signal and encoded stereo parameter information. The encoded stereo parameter information represents a first value of a stereo parameter and a second value of the stereo parameter. The first value is associated with a first frequency range. The second value is associated with a second frequency range that is distinct from the first frequency range. The up-mixer is configured to perform an up-mix operation on a frequency-domain decoded mid signal generated from the encoded mid signal. A particular value based on the first value and the second value is applied to the frequency-domain decoded mid signal during the up-mix operation.Type: GrantFiled: July 2, 2020Date of Patent: August 24, 2021Assignee: QUALCOMM IncorporatedInventors: Venkata Subrahmanyam Chandra Sekhar Chebiyyam, Venkatraman Atti
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Patent number: 11094330Abstract: A device includes an encoder configured to determine, during a first period, that a first audio signal is a leading signal and that a second audio signal is a lagging signal. The encoder is also configured to generate a first frame of at least one encoded signal based on a first modified version of the second audio signal that is generated by adjusting the second audio signal based on a first mismatch value. The encoder is configured to determine, during a second period, that the first audio signal is the leading signal and that the second audio signal is the lagging signal. The encoder is configured to generate a second frame of the at least one encoded signal based on a second modified version of the second audio signal that is generated by adjusting the second audio signal based on the first mismatch value and a second mismatch value.Type: GrantFiled: February 28, 2020Date of Patent: August 17, 2021Assignee: QUALCOMM IncorporatedInventors: Venkatraman Atti, Venkata Subrahmanyam Chandra Sekhar Chebiyyam, Daniel Jared Sinder
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Patent number: 11087771Abstract: A device includes an encoder and a transmitter. The encoder is configured to generate a first high-band portion of a first signal based on a left signal and a right signal. The encoder is also configured to generate a set of adjustment gain parameters based on a high-band non-reference signal. The high-band non-reference signal corresponds to one of a left high-band portion of the left signal or a right high-band portion of the right signal as a high-band non-reference signal. The transmitter is configured to transmit information corresponding to the first high-band portion of the first signal. The transmitter is also configured to transmit the set of adjustment gain parameters corresponding to the high-band non-reference signal.Type: GrantFiled: June 26, 2019Date of Patent: August 10, 2021Assignee: QUALCOMM IncorporatedInventors: Venkatraman Atti, Venkata Subrahmanyam Chandra Sekhar Chebiyyam
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Publication number: 20210183398Abstract: A device includes an encoder configured to generate a first high-band portion of a first signal based on a left signal and a right signal. The encoder is also configured to generate a set of adjustment gain parameters based on a high-band non-reference signal and a synthesized signal. The high-band non-reference signal corresponds to one of a left high-band portion of the left signal or a right high-band portion of the right signal.Type: ApplicationFiled: March 1, 2021Publication date: June 17, 2021Inventors: Venkatraman ATTI, Venkata Subrahmanyam Chandra Sekhar CHEBIYYAM
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Publication number: 20210098006Abstract: A method includes generating a synthesized non-reference high-band channel based on a non-reference high-band excitation corresponding to a non-reference target channel. The method further includes estimating one or more spectral mapping parameters based on the synthesized non-reference high-band channel and a high-band portion of the non-reference target channel. The method also includes applying the one or more spectral mapping parameters to the synthesized non-reference high-band channel to generate a spectrally shaped synthesized non-reference high-band channel. The method further includes generating an encoded bitstream based on the one or more spectral mapping parameters and the spectrally shaped synthesized non-reference high-band channel.Type: ApplicationFiled: December 11, 2020Publication date: April 1, 2021Applicant: QUALCOMM IncorporatedInventors: Venkata Subrahmanyam Chandra Sekhar CHEBIYYAM, Venkatraman Atti
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Publication number: 20210065727Abstract: A device for signal processing includes a memory and a processor. The memory is configured to store a parameter associated with a bandwidth-extended audio stream. The processor is configured to select a plurality of non-linear processing functions based at least in part on a value of the parameter. The processor is also configured to generate a high-band excitation signal based on the plurality of non-linear processing functions.Type: ApplicationFiled: October 28, 2020Publication date: March 4, 2021Inventors: Venkatraman ATTI, Venkata Subrahmanyam Chandra Seker CHEBIYYAM
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Patent number: 10902858Abstract: An apparatus includes a decoder configured to receive, from an encoder, a frame associated with an audio bitstream and with a first sampling rate. The decoder is configured to perform a frequency-domain upmix on data associated with the frame to generate left and right frequency-domain signals and is further configured to generate, based on the left and right frequency-domain signals, left and right time-domain signals that each have a second sampling rate. The second sampling rate is determined by the decoder, based on one or both of the first sampling rate and an output sampling rate, and is adjustable by the decoder to enable different frames to be decoded at different second sampling rates. The decoder is further configured to generate, based on the left and right time-domain signals, left and right resampled signals that each have the output sampling rate.Type: GrantFiled: February 20, 2019Date of Patent: January 26, 2021Assignee: QUALCOMM IncorporatedInventors: Venkata Subrahmanyam Chandra Sekhar Chebiyyam, Venkatraman Atti