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公开(公告)号：US10403293B2
公开(公告)日：2019-09-03
申请号：US15810732
申请日：2017-11-13
Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , Kwangwoon University Industry-Academic Collaboration Foundation
Inventor： Tae Jin Lee , Seung-Kwon Baek , Min Je Kim , Dae Young Jang , Jeongil Seo , Kyeongok Kang , Jin-Woo Hong , Hochong Park , Young-Cheol Park
Abstract: Provided is an encoding apparatus for integrally encoding and decoding a speech signal and a audio signal, and may include: an input signal analyzer to analyze a characteristic of an input signal; a stereo encoder to down mix the input signal to a mono signal when the input signal is a stereo signal, and to extract stereo sound image information; a frequency band expander to expand a frequency band of the input signal; a sampling rate converter to convert a sampling rate; a speech signal encoder to encode the input signal using a speech encoding module when the input signal is a speech characteristics signal; a audio signal encoder to encode the input signal using a audio encoding module when the input signal is a audio characteristic signal; and a bitstream generator to generate a bitstream.
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公开(公告)号：US10121482B2
公开(公告)日：2018-11-06
申请号：US15618689
申请日：2017-06-09
Inventor： Tae Jin Lee , Seung-Kwon Baek , Min Je Kim , Dae Young Jang , Jeongil Seo , Kyeongok Kang , Jin-Woo Hong , Hochong Park , Young-cheol Park
Abstract: Provided are an apparatus and a method for integrally encoding and decoding a speech signal and an audio signal. The encoding apparatus may include: an input signal analyzer to analyze a characteristic of an input signal; a first conversion encoder to convert the input signal to a frequency domain signal, and to encode the input signal when the input signal is an audio characteristic signal; a Linear Predictive Coding (LPC) encoder to perform LPC encoding of the input signal when the input signal is a speech characteristic signal; a frequency band expander for expanding a frequency band of the input signal whose output is transmitted to either the time-domain encoding module or the transform encoding module based on the input characteristic; and a bitstream generator to generate a bitstream using an output signal of the first conversion encoder and an output signal of the LPC encoder.
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公开(公告)号：US12148438B2
公开(公告)日：2024-11-19
申请号：US17373243
申请日：2021-07-12
Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , KWANGWOON UNIVERSITY INDUSTRY-ACADEMIC COLLABORATION FOUNDATION
Inventor： Seung Kwon Beack , Tae Jin Lee , Min Je Kim , Dae Young Jang , Kyeongok Kang , Jin Woo Hong , Ho Chong Park , Young-cheol Park
IPC: G10L19/022 , G10L19/02 , G10L19/18
Abstract: An encoding apparatus and a decoding apparatus in a transform between a Modified Discrete Cosine Transform (MDCT)-based coder and a different coder are provided. The encoding apparatus may encode additional information to restore an input signal encoded according to the MDCT-based coding scheme, when switching occurs between the MDCT-based coder and the different coder. Accordingly, an unnecessary bitstream may be prevented from being generated, and minimum additional information may be encoded.
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公开(公告)号：US11922962B2
公开(公告)日：2024-03-05
申请号：US17895256
申请日：2022-08-25
Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , KWANGWOON UNIVERSITY INDUSTRY-ACADEMIC COLLABORATION FOUNDATION
Inventor： Seungkwon Beack , Tae Jin Lee , Min Je Kim , Kyeongok Kang , Dae Young Jang , Jeongil Seo , Jin Woo Hong , Chieteuk Ahn , Ho Chong Park , Young-cheol Park
IPC: G10L19/022 , G10L19/06 , G10L19/18 , G10L19/22
CPC classification number: G10L19/22 , G10L19/022 , G10L19/06 , G10L19/18
Abstract: A Unified Speech and Audio Codec (USAC) that may process a window sequence based on mode switching is provided. The USAC may perform encoding or decoding by overlapping between frames based on a folding point when mode switching occurs. The USAC may process different window sequences for each situation to perform encoding or decoding, and thereby may improve a coding efficiency.
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公开(公告)号：US11430458B2
公开(公告)日：2022-08-30
申请号：US16835728
申请日：2020-03-31
Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , KWANGWOON UNIVERSITY INDUSTRY-ACADEMIC COLLABORATION FOUNDATION
Inventor： Seungkwon Beack , Tae Jin Lee , Min Je Kim , Kyeongok Kang , Dae Young Jang , Jeongil Seo , Jin Woo Hong , Chieteuk Ahn , Ho Chong Park , Young-cheol Park
IPC: G10L19/022 , G10L19/22 , G10L19/06 , G10L19/18
Abstract: A Unified Speech and Audio Codec (USAC) that may process a window sequence based on mode switching is provided. The USAC may perform encoding or decoding by overlapping between frames based on a folding point when mode switching occurs. The USAC may process different window sequences for each situation to perform encoding or decoding, and thereby may improve a coding efficiency.
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Patent Agency Ranking
公开(公告)号：US10777212B2
公开(公告)日：2020-09-15
申请号：US16179120
申请日：2018-11-02
Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , KWANGWOON UNIVERSITY INDUSTRY-ACADEMIC COLLABORATION FOUNDATION
Inventor： Tae Jin Lee , Seung-Kwon Baek , Min Je Kim , Dae Young Jang , Jeongil Seo , Kyeongok Kang , Jin-Woo Hong , Hochong Park , Young-cheol Park
Abstract: Provided are an apparatus and a method for integrally encoding and decoding a speech signal and a audio signal. The encoding apparatus may include: an input signal analyzer to analyze a characteristic of an input signal; a first conversion encoder to convert the input signal to a frequency domain signal, and to encode the input signal when the input signal is a audio characteristic signal; a Linear Predictive Coding (LPC) encoder to perform LPC encoding of the input signal when the input signal is a speech characteristic signal; and a bitstream generator to generate a bitstream using an output.
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公开(公告)号：US10002619B2
公开(公告)日：2018-06-19
申请号：US15200404
申请日：2016-07-01
Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , KWANGWOON UNIVERSITY INDUSTRY-ACADEMIC COLLABORATION FOUNDATION
Inventor： Seungkwon Beack , Tae Jin Lee , Min Je Kim , Kyeongok Kang , Dae Young Jang , Jeongil Seo , Jin Woo Hong , Chieteuk Ahn , Ho Chong Park , Young-cheol Park
IPC: G10L19/022 , G10L19/22 , G10L19/06 , G10L19/18
CPC classification number: G10L19/22 , G10L19/022 , G10L19/06 , G10L19/18
Abstract: A Unified Speech and Audio Codec (USAC) that may process a window sequence based on mode switching is provided. The USAC may perform encoding or decoding by overlapping between frames based on a folding point when mode switching occurs. The USAC may process different window sequences for each situation to perform encoding or decoding, and thereby may improve a coding efficiency.
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公开(公告)号：US20180068667A1
公开(公告)日：2018-03-08
申请号：US15810732
申请日：2017-11-13
Applicant: Electronics and Telecommunications Research Institute , Kwangwoon University Industry-Academic Collaboration Foundation
Inventor： Tae Jin Lee , Seung Kwon Baek , Min Je Kim , Dae Young Jang , Jeongil Seo , Kyeongok Kang , Jin Woo Hong , Hochong Park , Young Cheol Park
Abstract: Provided is an encoding apparatus for integrally encoding and decoding a speech signal and a audio signal, and may include: an input signal analyzer to analyze a characteristic of an input signal; a stereo encoder to down mix the input signal to a mono signal when the input signal is a stereo signal, and to extract stereo sound image information; a frequency band expander to expand a frequency band of the input signal; a sampling rate converter to convert a sampling rate ; a speech signal encoder to encode the input signal using a speech encoding module when the input signal is a speech characteristics signal; a audio signal encoder to encode the input signal using a audio encoding module when the input signal is a audio characteristic signal; and a bitstream generator to generate a bitstream.
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公开(公告)号：US09818411B2
公开(公告)日：2017-11-14
申请号：US14534781
申请日：2014-11-06
Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , Kwangwoon University Industry—Academic Collaboration Foundation
Inventor： Tae Jin Lee , Seung Kwon Baek , Min Je Kim , Dae Young Jang , Jeongil Seo , Kyeongok Kang , Jin Woo Hong , Hochong Park , Young Cheol Park
Abstract: Provided is an encoding apparatus for integrally encoding and decoding a speech signal and a audio signal, and may include: an input signal analyzer to analyze a characteristic of an input signal; a stereo encoder to down mix the input signal to a mono signal when the input signal is a stereo signal, and to extract stereo sound image information; a frequency band expander to expand a frequency band of the input signal; a sampling rate converter to convert a sampling rate; a speech signal encoder to encode the input signal using a speech encoding module when the input signal is a speech characteristics signal; a audio signal encoder to encode the input signal using a audio encoding module when the input signal is a audio characteristic signal; and a bitstream generator to generate a bitstream.
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公开(公告)号：US09728198B2
公开(公告)日：2017-08-08
申请号：US15194174
申请日：2016-06-27
Inventor： Seung Kwon Beack , Tae Jin Lee , Min Je Kim , Kyeongok Kang , Dae Young Jang , Jin Woo Hong , Jeongil Seo , Chieteuk Ahn , Hochong Park , Young-cheol Park
IPC: G10L19/125 , G10L19/22
CPC classification number: G10L19/087 , G10L19/125 , G10L19/22 , G10L19/26
Abstract: Disclosed is an LPC residual signal encoding/decoding apparatus of an MDCT based unified voice and audio encoding device. The LPC residual signal encoding apparatus analyzes a property of an input signal, selects an encoding method of an LPC filtered signal, and encode the LPC residual signal based on one of a real filterbank, a complex filterbank, and an algebraic code excited linear prediction (ACELP).
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