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公开(公告)号：US11749292B2
公开(公告)日：2023-09-05
申请号：US17515929
申请日：2021-11-01
申请人： NTT DOCOMO, INC.
IPC分类号： G10L19/125 , G10L19/09 , G10L19/005
CPC分类号： G10L19/125 , G10L19/005 , G10L19/09
摘要： An audio signal transmission device for encoding an audio signal includes an audio encoding unit that encodes an audio signal and a side information encoding unit that calculates and encodes side information from a look-ahead signal. An audio signal receiving device for decoding an audio code and outputting an audio signal includes: an audio code buffer that detects packet loss based on a received state of an audio packet, an audio parameter decoding unit that decodes an audio code when an audio packet is correctly received, a side information decoding unit that decodes a side information code when an audio packet is correctly received, a side information accumulation unit that accumulates side information obtained by decoding a side information code, an audio parameter missing processing unit that outputs an audio parameter upon detection of audio packet loss, and an audio synthesis unit that synthesizes decoded audio from the audio parameter.
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2.发明申请公开(公告)号：US20190019519A1
公开(公告)日：2019-01-17
申请号：US16136978
申请日：2018-09-20
申请人： NTT DOCOMO, INC.
发明人： Kimitaka Tsutsumi , Kei Kikuiri
IPC分类号： G10L19/005 , G10L19/025 , G10L25/21
摘要： An audio packet error concealment system includes an encoding unit for encoding an audio signal consisting of a plurality of frames, and an auxiliary information encoding unit for estimating and encoding auxiliary information about a temporal change of power of the audio signal. The auxiliary information is used in packet loss concealment in decoding of the audio signal. The auxiliary information about the temporal change of power may contain a parameter that functionally approximates a plurality of powers of subframes shorter than one frame, or may contain information about a vector obtained by vector quantization of a plurality of powers of subframes shorter than one frame.
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公开(公告)号：US11322163B2
公开(公告)日：2022-05-03
申请号：US16937366
申请日：2020-07-23
申请人： NTT DOCOMO, INC.
发明人： Kimitaka Tsutsumi , Kei Kikuiri
IPC分类号： G10L19/00 , G10L19/005 , G10L25/21 , G10L19/025
摘要： An audio packet error concealment system includes an encoding unit for encoding an audio signal consisting of a plurality of frames, and an auxiliary information encoding unit for estimating and encoding auxiliary information about a temporal change of power of the audio signal. The auxiliary information is used in packet loss concealment in decoding of the audio signal. The auxiliary information about the temporal change of power may contain a parameter that functionally approximates a plurality of powers of subframes shorter than one frame, or may contain information about a vector obtained by vector quantization of a plurality of powers of subframes shorter than one frame.
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公开(公告)号：US20220059108A1
公开(公告)日：2022-02-24
申请号：US17515929
申请日：2021-11-01
申请人： NTT DOCOMO, INC.
IPC分类号： G10L19/125 , G10L19/09 , G10L19/005
摘要： An audio signal transmission device for encoding an audio signal includes an audio encoding unit that encodes an audio signal and a side information encoding unit that calculates and encodes side information from a look-ahead signal. An audio signal receiving device for decoding an audio code and outputting an audio signal includes: an audio code buffer that detects packet loss based on a received state of an audio packet, an audio parameter decoding unit that decodes an audio code when an audio packet is correctly received, a side information decoding unit that decodes a side information code when an audio packet is correctly received, a side information accumulation unit that accumulates side information obtained by decoding a side information code, an audio parameter missing processing unit that outputs an audio parameter upon detection of audio packet loss, and an audio synthesis unit that synthesizes decoded audio from the audio parameter.
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公开(公告)号：US11211077B2
公开(公告)日：2021-12-28
申请号：US16717806
申请日：2019-12-17
申请人： NTT DOCOMO, INC.
IPC分类号： G10L19/125 , G10L19/09 , G10L19/005
摘要： An audio signal transmission device for encoding an audio signal includes an audio encoding unit that encodes an audio signal and a side information encoding unit that calculates and encodes side information from a look-ahead signal. An audio signal receiving device for decoding an audio code and outputting an audio signal includes: an audio code buffer that detects packet loss based on a received state of an audio packet, an audio parameter decoding unit that decodes an audio code when an audio packet is correctly received, a side information decoding unit that decodes a side information code when an audio packet is correctly received, a side information accumulation unit that accumulates side information obtained by decoding a side information code, an audio parameter missing processing unit that outputs an audio parameter upon detection of audio packet loss, and an audio synthesis unit that synthesizes decoded audio from the audio parameter.
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公开(公告)号：US11176955B2
公开(公告)日：2021-11-16
申请号：US16717822
申请日：2019-12-17
申请人： NTT DOCOMO, INC.
IPC分类号： G10L19/125 , G10L19/09 , G10L19/005
摘要： An audio signal transmission device for encoding an audio signal includes an audio encoding unit that encodes an audio signal and a side information encoding unit that calculates and encodes side information from a look-ahead signal. An audio signal receiving device for decoding an audio code and outputting an audio signal includes: an audio code buffer that detects packet loss based on a received state of an audio packet, an audio parameter decoding unit that decodes an audio code when an audio packet is correctly received, a side information decoding unit that decodes a side information code when an audio packet is correctly received, a side information accumulation unit that accumulates side information obtained by decoding a side information code, an audio parameter missing processing unit that outputs an audio parameter upon detection of audio packet loss, and an audio synthesis unit that synthesizes decoded audio from the audio parameter.
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公开(公告)号：US20180122394A1
公开(公告)日：2018-05-03
申请号：US15854416
申请日：2017-12-26
申请人： NTT DOCOMO, INC.
IPC分类号： G10L19/125 , G10L19/005 , G10L19/09
摘要： An audio signal transmission device for encoding an audio signal includes an audio encoding unit that encodes an audio signal and a side information encoding unit that calculates and encodes side information from a look-ahead signal. An audio signal receiving device for decoding an audio code and outputting an audio signal includes: an audio code buffer that detects packet loss based on a received state of an audio packet, an audio parameter decoding unit that decodes an audio code when an audio packet is correctly received, a side information decoding unit that decodes a side information code when an audio packet is correctly received, a side information accumulation unit that accumulates side information obtained by decoding a side information code, an audio parameter missing processing unit that outputs an audio parameter upon detection of audio packet loss, and an audio synthesis unit that synthesizes decoded audio from the audio parameter.
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公开(公告)号：US09881627B2
公开(公告)日：2018-01-30
申请号：US15385458
申请日：2016-12-20
申请人： NTT DOCOMO, INC.
IPC分类号： G10L19/125 , G10L19/09 , G10L19/005
CPC分类号： G10L19/125 , G10L19/005 , G10L19/09
摘要： An audio signal transmission device for encoding an audio signal includes an audio encoding unit that encodes an audio signal and a side information encoding unit that calculates and encodes side information from a look-ahead signal. An audio signal receiving device for decoding an audio code and outputting an audio signal includes: an audio code buffer that detects packet loss based on a received state of an audio packet, an audio parameter decoding unit that decodes an audio code when an audio packet is correctly received, a side information decoding unit that decodes a side information code when an audio packet is correctly received, a side information accumulation unit that accumulates side information obtained by decoding a side information code, an audio parameter missing processing unit that outputs an audio parameter upon detection of audio packet loss, and an audio synthesis unit that synthesizes decoded audio from the audio parameter.
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公开(公告)号：US20170148459A1
公开(公告)日：2017-05-25
申请号：US15385458
申请日：2016-12-20
申请人： NTT DOCOMO, INC.
IPC分类号： G10L19/125 , G10L19/09 , G10L19/005
CPC分类号： G10L19/125 , G10L19/005 , G10L19/09
摘要： An audio signal transmission device for encoding an audio signal includes an audio encoding unit that encodes an audio signal and a side information encoding unit that calculates and encodes side information from a look-ahead signal. An audio signal receiving device for decoding an audio code and outputting an audio signal includes: an audio code buffer that detects packet loss based on a received state of an audio packet, an audio parameter decoding unit that decodes an audio code when an audio packet is correctly received, a side information decoding unit that decodes a side information code when an audio packet is correctly received, a side information accumulation unit that accumulates side information obtained by decoding a side information code, an audio parameter missing processing unit that outputs an audio parameter upon detection of audio packet loss, and an audio synthesis unit that synthesizes decoded audio from the audio parameter.
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10.发明申请公开(公告)号：US20220215846A1
公开(公告)日：2022-07-07
申请号：US17702473
申请日：2022-03-23
申请人： NTT DOCOMO, INC.
发明人： Kimitaka Tsutsumi , Kei Kikuiri
IPC分类号： G10L19/005 , G10L25/21 , G10L19/025
摘要： An audio packet error concealment system includes an encoding unit for encoding an audio signal consisting of a plurality of frames, and an auxiliary information encoding unit for estimating and encoding auxiliary information about a temporal change of power of the audio signal. The auxiliary information is used in packet loss concealment in decoding of the audio signal. The auxiliary information about the temporal change of power may contain a parameter that functionally approximates a plurality of powers of subframes shorter than one frame, or may contain information about a vector obtained by vector quantization of a plurality of powers of subframes shorter than one frame.
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