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公开(公告)号：US11031026B2
公开(公告)日：2021-06-08
申请号：US16219620
申请日：2018-12-13
发明人： Andrew Kostic , Eddie Choy , Dinesh Ramakrishnan
IPC分类号： G10L21/00 , G10L25/84 , G10L25/78 , G10L21/0208 , G10L21/028 , G10L21/0364 , G10L21/0216
摘要： Methods, systems, computer-readable media, and apparatuses for acoustic echo cancellation during playback of encoded audio are presented. In some embodiments, a decoder is arranged to decode an encoded media signal to produce an echo reference signal, and an echo canceler is arranged to perform an acoustic echo cancellation operation, based on the echo reference signal, on an input voice signal to produce an echo-cancelled voice signal. The echo canceler may be configured to reduce, relative to an energy of a voice component of the input voice signal, an energy of a signal component of the input voice signal that is based on audio content from the encoded media signal.
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公开(公告)号：US11269592B2
公开(公告)日：2022-03-08
申请号：US16794553
申请日：2020-02-19
发明人： Andrew Kostic , Prajakt Kulkarni
摘要： Methods, systems, and devices for systems and techniques for processing keywords in audio data are described. In some devices configured with a virtual assistant, an audio processing component may support a command-first, keyword-second voice activation procedure. The audio processing component may receive audio data from a microphone and may compress a portion of the audio data and store the compressed audio data in a first buffer and may store a portion of the audio data that is uncompressed in a second buffer. The audio processing component may use the uncompressed audio data to detect the presence of a keyword and use the compressed audio data to identify a command associated with the keyword. Upon detection of the keyword, the audio processing component may decompress the compressed audio data and transmit the decompressed audio data and the uncompressed audio data to a main processor of the device.
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公开(公告)号：US20210255825A1
公开(公告)日：2021-08-19
申请号：US16794553
申请日：2020-02-19
发明人： Andrew Kostic , Prajakt Kulkarni
摘要： Methods, systems, and devices for systems and techniques for processing keywords in audio data are described. In some devices configured with a virtual assistant, an audio processing component may support a command-first, keyword-second voice activation procedure. The audio processing component may receive audio data from a microphone and may compress a portion of the audio data and store the compressed audio data in a first buffer and may store a portion of the audio data that is uncompressed in a second buffer. The audio processing component may use the uncompressed audio data to detect the presence of a keyword and use the compressed audio data to identify a command associated with the keyword. Upon detection of the keyword, the audio processing component may decompress the compressed audio data and transmit the decompressed audio data and the uncompressed audio data to a main processor of the device.
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