JP4610512B2 - 音声信号処理回路 - Google Patents
音声信号処理回路 Download PDFInfo
- Publication number
- JP4610512B2 JP4610512B2 JP2006103813A JP2006103813A JP4610512B2 JP 4610512 B2 JP4610512 B2 JP 4610512B2 JP 2006103813 A JP2006103813 A JP 2006103813A JP 2006103813 A JP2006103813 A JP 2006103813A JP 4610512 B2 JP4610512 B2 JP 4610512B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- frequency
- pass filter
- detector
- audio
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/439—Processing of audio elementary streams
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Television Receiver Circuits (AREA)
- Superheterodyne Receivers (AREA)
Description
Claims (3)
- 第1音声中間周波数信号についてその中心周波数付近の信号を抽出する第1バンドパスフィルタと、
第1バンドパスフィルタにより取り出された信号について第2音声中間周波数信号にダウンコンバートするミキサと、
第2音声中間周波数信号についてその中心周波数付近の信号およびそれ以下の周波数の信号を抽出するローパスフィルタと、
このローパスフィルタにより取り出された信号についてFM検波するFM検波器と、
第2音声中間周波数信号についてその中心周波数付近の信号を抽出する第2バンドパスフィルタと、
を含み、
この第2バンドパスフィルタと、前記ローパスフィルタとのいずれの出力が前記FM検波器に供給されるかが切り換えられることを特徴とする音声信号処理回路。 - 請求項1に記載の音声信号処理回路において、
前記第1音声中間周波数信号の周波数を検出する周波数検出器を含み、
この周波数検出器の検出結果に基づいて前記第2バンドパスフィルタと、前記ローパスフィルタとのいずれの出力が前記FM検波器に供給されるかが切り換えられることを特徴とする音声信号処理回路。 - 請求項1に記載の音声信号処理回路において、
前記FM検波器の出力におけるDC成分を検出するDC検出器を含み、
このDC検出器の検出結果に基づいて前記第2バンドパスフィルタと、前記ローパスフィルタとのいずれの出力が前記FM検波器に供給されるかが切り換えられることを特徴とする音声信号処理回路。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006103813A JP4610512B2 (ja) | 2006-04-05 | 2006-04-05 | 音声信号処理回路 |
PCT/JP2007/057556 WO2007119674A1 (ja) | 2006-04-05 | 2007-04-04 | 音声信号処理回路 |
CN2007800067565A CN101390386B (zh) | 2006-04-05 | 2007-04-04 | 声音信号处理电路 |
US12/280,177 US20100238361A1 (en) | 2006-04-05 | 2007-04-04 | Sound signal processing circuit |
KR1020087023596A KR100933998B1 (ko) | 2006-04-05 | 2007-04-04 | 음성신호처리회로 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006103813A JP4610512B2 (ja) | 2006-04-05 | 2006-04-05 | 音声信号処理回路 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007281739A JP2007281739A (ja) | 2007-10-25 |
JP4610512B2 true JP4610512B2 (ja) | 2011-01-12 |
Family
ID=38609433
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006103813A Expired - Fee Related JP4610512B2 (ja) | 2006-04-05 | 2006-04-05 | 音声信号処理回路 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20100238361A1 (ja) |
JP (1) | JP4610512B2 (ja) |
KR (1) | KR100933998B1 (ja) |
CN (1) | CN101390386B (ja) |
WO (1) | WO2007119674A1 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5374231B2 (ja) * | 2009-05-18 | 2013-12-25 | オリンパス株式会社 | 撮像装置 |
CN107799122B (zh) * | 2017-09-08 | 2020-10-23 | 中国科学院深圳先进技术研究院 | 一种高生物拟真性语音处理滤波器与语音识别设备 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09172584A (ja) * | 1995-12-20 | 1997-06-30 | Rohm Co Ltd | Sif信号処理回路 |
JPH09252442A (ja) * | 1996-03-15 | 1997-09-22 | Toshiba Corp | 復調装置 |
JPH11274858A (ja) * | 1998-03-23 | 1999-10-08 | Sanyo Electric Co Ltd | Fm復調回路 |
JP2000004174A (ja) * | 1998-06-16 | 2000-01-07 | Sony Corp | 受信機 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62159006U (ja) * | 1986-03-31 | 1987-10-08 | ||
JPH02186723A (ja) * | 1988-08-25 | 1990-07-23 | Nec Corp | 受信機 |
DE69632040T2 (de) * | 1996-01-10 | 2004-09-30 | Koninklijke Philips Electronics N.V. | Tv/fm-empfänger für multimedia-anwendungen |
JP2002044560A (ja) * | 2000-07-26 | 2002-02-08 | Mitsubishi Electric Corp | 受信装置 |
JP2006148533A (ja) * | 2004-11-19 | 2006-06-08 | Matsushita Electric Ind Co Ltd | 音声中間周波数変換回路 |
-
2006
- 2006-04-05 JP JP2006103813A patent/JP4610512B2/ja not_active Expired - Fee Related
-
2007
- 2007-04-04 US US12/280,177 patent/US20100238361A1/en not_active Abandoned
- 2007-04-04 CN CN2007800067565A patent/CN101390386B/zh not_active Expired - Fee Related
- 2007-04-04 WO PCT/JP2007/057556 patent/WO2007119674A1/ja active Application Filing
- 2007-04-04 KR KR1020087023596A patent/KR100933998B1/ko not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09172584A (ja) * | 1995-12-20 | 1997-06-30 | Rohm Co Ltd | Sif信号処理回路 |
JPH09252442A (ja) * | 1996-03-15 | 1997-09-22 | Toshiba Corp | 復調装置 |
JPH11274858A (ja) * | 1998-03-23 | 1999-10-08 | Sanyo Electric Co Ltd | Fm復調回路 |
JP2000004174A (ja) * | 1998-06-16 | 2000-01-07 | Sony Corp | 受信機 |
Also Published As
Publication number | Publication date |
---|---|
KR20080098547A (ko) | 2008-11-10 |
CN101390386B (zh) | 2011-06-15 |
KR100933998B1 (ko) | 2009-12-28 |
US20100238361A1 (en) | 2010-09-23 |
WO2007119674A1 (ja) | 2007-10-25 |
CN101390386A (zh) | 2009-03-18 |
JP2007281739A (ja) | 2007-10-25 |
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