WO2009004727A1 - 符号化装置、符号化方法および符号化プログラム - Google Patents

符号化装置、符号化方法および符号化プログラム Download PDF

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Publication number
WO2009004727A1
WO2009004727A1 PCT/JP2007/063395 JP2007063395W WO2009004727A1 WO 2009004727 A1 WO2009004727 A1 WO 2009004727A1 JP 2007063395 W JP2007063395 W JP 2007063395W WO 2009004727 A1 WO2009004727 A1 WO 2009004727A1
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WO
WIPO (PCT)
Prior art keywords
encoding
calculated
segments
spectral
program
Prior art date
Application number
PCT/JP2007/063395
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English (en)
French (fr)
Inventor
Miyuki Shirakawa
Masanao Suzuki
Yoshiteru Tsuchinaga
Takashi Makiuchi
Original Assignee
Fujitsu Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Limited filed Critical Fujitsu Limited
Priority to JP2009521487A priority Critical patent/JP5071479B2/ja
Priority to PCT/JP2007/063395 priority patent/WO2009004727A1/ja
Publication of WO2009004727A1 publication Critical patent/WO2009004727A1/ja
Priority to US12/654,591 priority patent/US8244524B2/en

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    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/02—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders

Abstract

　入力信号を周波数領域のスペクトル信号に変換し、変換されたスペクトル信号を、時間方向および周波数方向に任意の数のセグメントに分割し、任意の数に分割されたセグメントごとにスペクトルパワーと、当該スペクトルパワーの特徴を示す特徴パラメタとを算出し、算出された各セグメントごとのスペクトルパワーからマスキング閾値を算出し、算出されたマスキング閾値以下となるスペクトルパワーを持つセグメントを検出し、検出されたセグメントのスペクトルパワーを補正し、補正されたセグメントのスペクトルパワーと、算出されたパラメタとを符号化する。
PCT/JP2007/063395 2007-07-04 2007-07-04 符号化装置、符号化方法および符号化プログラム WO2009004727A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2009521487A JP5071479B2 (ja) 2007-07-04 2007-07-04 符号化装置、符号化方法および符号化プログラム
PCT/JP2007/063395 WO2009004727A1 (ja) 2007-07-04 2007-07-04 符号化装置、符号化方法および符号化プログラム
US12/654,591 US8244524B2 (en) 2007-07-04 2009-12-23 SBR encoder with spectrum power correction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2007/063395 WO2009004727A1 (ja) 2007-07-04 2007-07-04 符号化装置、符号化方法および符号化プログラム

Related Child Applications (1)

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US12/654,591 Continuation US8244524B2 (en) 2007-07-04 2009-12-23 SBR encoder with spectrum power correction

Publications (1)

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WO2009004727A1 true WO2009004727A1 (ja) 2009-01-08

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PCT/JP2007/063395 WO2009004727A1 (ja) 2007-07-04 2007-07-04 符号化装置、符号化方法および符号化プログラム

Country Status (3)

Country Link
US (1) US8244524B2 (ja)
JP (1) JP5071479B2 (ja)
WO (1) WO2009004727A1 (ja)

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US9691410B2 (en) 2009-10-07 2017-06-27 Sony Corporation Frequency band extending device and method, encoding device and method, decoding device and method, and program
US9875746B2 (en) 2013-09-19 2018-01-23 Sony Corporation Encoding device and method, decoding device and method, and program
US10692511B2 (en) 2013-12-27 2020-06-23 Sony Corporation Decoding apparatus and method, and program

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ES2966665T3 (es) 2010-11-22 2024-04-23 Ntt Docomo Inc Dispositivo y método de codificación de audio
JP5609591B2 (ja) * 2010-11-30 2014-10-22 富士通株式会社 オーディオ符号化装置、オーディオ符号化方法及びオーディオ符号化用コンピュータプログラム
TR201900411T4 (tr) 2011-04-05 2019-02-21 Nippon Telegraph & Telephone Akustik sinyal kodu çözme.
EP4322161A3 (en) * 2011-04-20 2024-05-01 Panasonic Holdings Corporation Device and method for execution of huffman coding
US8958611B2 (en) * 2011-12-29 2015-02-17 Mako Surgical Corporation Interactive CSG subtraction
US10008214B2 (en) * 2015-09-11 2018-06-26 Electronics And Telecommunications Research Institute USAC audio signal encoding/decoding apparatus and method for digital radio services
JP6769299B2 (ja) * 2016-12-27 2020-10-14 富士通株式会社 オーディオ符号化装置およびオーディオ符号化方法
EP3435376B1 (en) * 2017-07-28 2020-01-22 Fujitsu Limited Audio encoding apparatus and audio encoding method
US11166775B2 (en) 2017-09-15 2021-11-09 Mako Surgical Corp. Robotic cutting systems and methods for surgical saw blade cutting on hard tissue
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Cited By (15)

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US9691410B2 (en) 2009-10-07 2017-06-27 Sony Corporation Frequency band extending device and method, encoding device and method, decoding device and method, and program
US10224054B2 (en) 2010-04-13 2019-03-05 Sony Corporation Signal processing apparatus and signal processing method, encoder and encoding method, decoder and decoding method, and program
US10546594B2 (en) 2010-04-13 2020-01-28 Sony Corporation Signal processing apparatus and signal processing method, encoder and encoding method, decoder and decoding method, and program
US10381018B2 (en) 2010-04-13 2019-08-13 Sony Corporation Signal processing apparatus and signal processing method, encoder and encoding method, decoder and decoding method, and program
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US9177563B2 (en) 2010-10-15 2015-11-03 Sony Corporation Encoding device and method, decoding device and method, and program
US9875746B2 (en) 2013-09-19 2018-01-23 Sony Corporation Encoding device and method, decoding device and method, and program
US10692511B2 (en) 2013-12-27 2020-06-23 Sony Corporation Decoding apparatus and method, and program
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Also Published As

Publication number Publication date
JPWO2009004727A1 (ja) 2010-08-26
US8244524B2 (en) 2012-08-14
JP5071479B2 (ja) 2012-11-14
US20100106511A1 (en) 2010-04-29

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