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WO2008129853A1 - オーディオ帯域拡張装置 - Google Patents

オーディオ帯域拡張装置 Download PDF

Info

Publication number
WO2008129853A1
WO2008129853A1 PCT/JP2008/000821 JP2008000821W WO2008129853A1 WO 2008129853 A1 WO2008129853 A1 WO 2008129853A1 JP 2008000821 W JP2008000821 W JP 2008000821W WO 2008129853 A1 WO2008129853 A1 WO 2008129853A1
Authority
WO
WIPO (PCT)
Prior art keywords
audio signal
frequency
extension device
frequency band
component
Prior art date
Application number
PCT/JP2008/000821
Other languages
English (en)
French (fr)
Inventor
Tatsuya Suzuki
Mitsuhiro Miyashita
Shinichi Harigae
Original Assignee
Panasonic Corporation
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 Panasonic Corporation filed Critical Panasonic Corporation
Publication of WO2008129853A1 publication Critical patent/WO2008129853A1/ja

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/038—Speech enhancement, e.g. noise reduction or echo cancellation using band spreading techniques

Landscapes

  • Engineering & Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Quality & Reliability (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)

Abstract

　入力される音声信号の周波数帯域に適合した形態での高域成分の補完を実現できるオーディオ帯域拡張装置を提供する。 　原音声信号の付随情報より原音声信号が持つ周波数帯域を予測し、その予測した周波数帯域に基づいて変換するサンプリング周波数を決定する。サンプリング周波数が変換された後の音声信号に対し１／２ダウンサンプリング処理および２倍アップサンプリング処理を施して高周波成分を生成する。高周波成分が生成された音声信号を、所定の減衰特性を持つローパスフィルタでフィルタリングして出力する。
PCT/JP2008/000821 2007-04-03 2008-03-31 オーディオ帯域拡張装置 WO2008129853A1 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-097107 2007-04-03
JP2007097107A JP2010145426A (ja) 2007-04-03 2007-04-03 オーディオ帯域拡張装置

Publications (1)

Publication Number Publication Date
WO2008129853A1 true WO2008129853A1 (ja) 2008-10-30

Family

ID=39875385

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/000821 WO2008129853A1 (ja) 2007-04-03 2008-03-31 オーディオ帯域拡張装置

Country Status (2)

Country Link
JP (1) JP2010145426A (ja)
WO (1) WO2008129853A1 (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010085876A (ja) * 2008-10-02 2010-04-15 Clarion Co Ltd 高域補完装置
JP5409377B2 (ja) * 2007-10-23 2014-02-05 クラリオン株式会社 高域補間装置および高域補間方法
CN110176247A (zh) * 2018-11-30 2019-08-27 株式会社索思未来 信号处理装置以及信号处理方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010085877A (ja) * 2008-10-02 2010-04-15 Clarion Co Ltd 音響補完装置
JP5750589B2 (ja) * 2010-12-17 2015-07-22 パナソニックＩｐマネジメント株式会社 拡声通話装置
KR101773353B1 (ko) * 2016-04-19 2017-08-31 주식회사 오르페오사운드웍스 이어셋의 음색 보상 장치 및 방법

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002082685A (ja) * 2000-06-26 2002-03-22 Matsushita Electric Ind Co Ltd 音声帯域拡張装置及び音声帯域拡張方法
JP2004317622A (ja) * 2003-04-14 2004-11-11 Matsushita Electric Ind Co Ltd 音響再生装置
JP2006064884A (ja) * 2004-08-25 2006-03-09 Kenwood Corp オーディオ装置
JP2006119524A (ja) * 2004-10-25 2006-05-11 Alpine Electronics Inc 音声再生機および音声再生方法
JP2006243041A (ja) * 2005-02-28 2006-09-14 Yutaka Yamamoto 高域補間装置及び再生装置
JP2006243043A (ja) * 2005-02-28 2006-09-14 Sanyo Electric Co Ltd 高域補間装置及び再生装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002082685A (ja) * 2000-06-26 2002-03-22 Matsushita Electric Ind Co Ltd 音声帯域拡張装置及び音声帯域拡張方法
JP2004317622A (ja) * 2003-04-14 2004-11-11 Matsushita Electric Ind Co Ltd 音響再生装置
JP2006064884A (ja) * 2004-08-25 2006-03-09 Kenwood Corp オーディオ装置
JP2006119524A (ja) * 2004-10-25 2006-05-11 Alpine Electronics Inc 音声再生機および音声再生方法
JP2006243041A (ja) * 2005-02-28 2006-09-14 Yutaka Yamamoto 高域補間装置及び再生装置
JP2006243043A (ja) * 2005-02-28 2006-09-14 Sanyo Electric Co Ltd 高域補間装置及び再生装置

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5409377B2 (ja) * 2007-10-23 2014-02-05 クラリオン株式会社 高域補間装置および高域補間方法
JP2010085876A (ja) * 2008-10-02 2010-04-15 Clarion Co Ltd 高域補完装置
CN110176247A (zh) * 2018-11-30 2019-08-27 株式会社索思未来 信号处理装置以及信号处理方法
US10564927B1 (en) 2018-11-30 2020-02-18 Socionext Inc. Signal processing apparatus and signal processing method
CN110176247B (zh) * 2018-11-30 2022-11-22 株式会社索思未来 信号处理装置以及信号处理方法

Also Published As

Publication number Publication date
JP2010145426A (ja) 2010-07-01

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