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公开(公告)号：US20240161757A1
公开(公告)日：2024-05-16
申请号：US18513188
申请日：2023-11-17
Applicant: QUALCOMM Incorporated
IPC: G10L19/008 , G10L19/005 , H04S1/00
CPC classification number: G10L19/008 , G10L19/005 , H04S1/007 , H04S2400/01 , H04S2400/05
Abstract: 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.
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公开(公告)号：US20170372708A1
公开(公告)日：2017-12-28
申请号：US15620685
申请日：2017-06-12
Applicant: QUALCOMM Incorporated
IPC: G10L19/008 , G10L19/022 , H04S3/00
CPC classification number: G10L19/008 , G10L19/022 , G10L19/24 , G10L19/26 , G10L21/038 , H04S3/008 , H04S2420/03
Abstract: A method for processing a signal includes receiving a first frame of an input audio bitstream at a decoder. The first frame includes at least one signal associated with a frequency range. The method also includes decoding the at least one signal to generate at least one decoded signal having an intermediate sampling rate. The intermediate sampling rate is based on coding information associated with the first frame. The method further includes generating a resampled signal based at least in part on the at least one decoded signal. The resampled signal has an output sampling rate of the decoder.
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3.发明公开公开(公告)号：US20240304199A1
公开(公告)日：2024-09-12
申请号：US18665298
申请日：2024-05-15
Applicant: QUALCOMM Incorporated
IPC: G10L19/087 , G10L19/02 , G10L19/03 , G10L19/08 , G10L19/16 , G10L19/24 , G10L21/0388
CPC classification number: G10L19/087 , G10L19/0204 , G10L19/03 , G10L19/167 , G10L19/24 , G10L19/08 , G10L21/0388
Abstract: A device for signal processing includes a processor. The processor is configured to generate a resampled signal based on a low-band excitation signal. The processor is also configured to apply a first non-linear processing function to the resampled signal to generate a first excitation signal corresponding to a first high-band frequency sub-range. The processor is further configured to apply a second non-linear processing function to the resampled signal to generate a second excitation signal corresponding to a second high-band frequency sub-rang. The first non-linear processing function is different from the second non-linear processing function. The first high-band frequency sub-range is distinct from the second high-band frequency sub-range. The processor is also configured to generate a high-band excitation signal based on the first excitation signal and the second excitation signal.
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公开(公告)号：US20200336853A1
公开(公告)日：2020-10-22
申请号：US16919483
申请日：2020-07-02
Applicant: QUALCOMM Incorporated
IPC: H04S3/00 , H04S1/00 , G10L19/008
Abstract: 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.
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公开(公告)号：US20200335114A1
公开(公告)日：2020-10-22
申请号：US16918887
申请日：2020-07-01
Applicant: QUALCOMM Incorporated
IPC: G10L19/008 , H04S1/00 , G10L19/005
Abstract: 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.
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Patent Agency Ranking
公开(公告)号：US20190214028A1
公开(公告)日：2019-07-11
申请号：US16272903
申请日：2019-02-11
Applicant: Qualcomm Incorporated
IPC: G10L19/008 , H04S1/00 , G10L19/005
Abstract: An apparatus includes a receiver and a decoder. The receiver is configured to receive a bitstream that includes an encoded mid channel and a quantized value representing a shift between a reference channel associated with an encoder and a target channel associated with the encoder. The quantized value is based on a value of the shift. The value of the shift is associated with the encoder and has a greater precision than the quantized value. The decoder is configured to decode the encoded mid channel to generate a decoded mid channel and to generate a first channel based on the decoded mid channel. The decoder is further configured to generate a second channel based on the decoded mid channel and the quantized value. The first channel corresponds to the reference channel and the second channel corresponds to the target channel.
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公开(公告)号：US20190147896A1
公开(公告)日：2019-05-16
申请号：US16249737
申请日：2019-01-16
Applicant: QUALCOMM Incorporated
IPC: G10L19/008 , G10L21/055 , H04S1/00 , H04S3/00 , G10L19/02
Abstract: A device includes a receiver configured to receive an encoded bitstream from a second device. The encoded bitstream includes a temporal mismatch value. The device also includes a decoder configured to decode the encoded bitstream to generate a first signal and a second signal. Based on the temporal mismatch value, the decoder is configured to map one of the first signal or the second signal as a decoded target channel. The decoder is also configured to perform a shift operation on the decoded target channel based on the temporal mismatch value to generate an adjusted decoded target channel. The device also includes an output device configured to output a first output signal and a second output signal. The second output signal is based on the adjusted decoded target channel.
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公开(公告)号：US20190103118A1
公开(公告)日：2019-04-04
申请号：US16143150
申请日：2018-09-26
Applicant: QUALCOMM Incorporated
IPC: G10L19/008 , G10L19/005
Abstract: A method includes receiving, at an audio encoder, multiple streams of audio data, where N is the number of the received multi streams. The method includes determining a similarity value for each stream of the multiple streams and comparing the similarity value for each stream of the multiple streams with a threshold. The method also includes identifying, based on the comparison, L (L
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公开(公告)号：US20190013028A1
公开(公告)日：2019-01-10
申请号：US16016842
申请日：2018-06-25
Applicant: QUALCOMM Incorporated
IPC: G10L19/008 , G10L19/02
Abstract: A method includes receiving, at an audio encoder, multiple streams of audio data. The method includes assigning a priority to each stream of the multiple streams and determining, based on the priority of each stream of the multiple streams, a permutation sequence for encoding of the multiple streams. The method also includes encoding at least a portion of each stream of the multiple streams according to the permutation sequence.
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10.发明申请公开(公告)号：US20170301364A1
公开(公告)日：2017-10-19
申请号：US15636501
申请日：2017-06-28
Applicant: QUALCOMM Incorporated
Inventor： Venkatraman ATTI , Vivek Rajendran , Venkatesh Krishnan
IPC: G10L19/26 , G10L19/06 , G10L21/0216 , G10L19/09 , G10L19/00
CPC classification number: G10L19/265 , G10L19/06 , G10L19/09 , G10L19/26 , G10L21/0216 , G10L2019/0011 , G10L2021/02168
Abstract: An apparatus includes a first calculator configured to determine a long-term noise estimate of the audio signal. The apparatus also includes a second calculator configured to determine a formant-sharpening factor based on the determined long-term noise estimate. The apparatus includes a filter configured to filter a codebook vector to generate a filtered codebook vector. The filter is based on the determined formant-sharpening factor, and the codebook vector is based on information from the audio signal. The apparatus further includes an audio coder configured to generate a formant-sharpened low-band excitation signal based on the filtered codebook vector.
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