JP4827675B2 - 低周波帯域音声復元装置、音声信号処理装置および録音機器 - Google Patents
低周波帯域音声復元装置、音声信号処理装置および録音機器 Download PDFInfo
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- JP4827675B2 JP4827675B2 JP2006259217A JP2006259217A JP4827675B2 JP 4827675 B2 JP4827675 B2 JP 4827675B2 JP 2006259217 A JP2006259217 A JP 2006259217A JP 2006259217 A JP2006259217 A JP 2006259217A JP 4827675 B2 JP4827675 B2 JP 4827675B2
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- 230000005236 sound signal Effects 0.000 title claims description 32
- 238000012545 processing Methods 0.000 title claims description 25
- 238000000605 extraction Methods 0.000 claims description 9
- 238000012937 correction Methods 0.000 description 19
- 238000000034 method Methods 0.000 description 6
- 201000009409 embryonal rhabdomyosarcoma Diseases 0.000 description 4
- 230000006837 decompression Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
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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
-
- 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
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/90—Pitch determination of speech signals
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- 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)
- Circuit For Audible Band Transducer (AREA)
Description
2 加算器
10 低周波帯域音声復元装置
11 LPF
12 2乗処理部
13 BPF
14 ゲイン補正部
15 ERMSパワー平均算出部
21 第1乗算器
31 LPF
32 第2乗算器
40 風音レベル判定部
Claims (3)
- 入力音声信号に基づいて入力音声信号に含まれている風音のレベルを判定する風音判定手段、
入力音声信号から所定の周波数以下の低周波数帯域信号を抽出する低周波数帯域信号抽出手段、
入力音声信号から上記所定の周波数以上の高周波数帯域信号を抽出する高周波数帯域信号抽出手段、
高周波数帯域信号抽出手段によって抽出された高周波数帯域信号に基づいて、入力音声信号に含まれている上記所定の周波数以下の低周波数帯域信号を復元する低周波数帯域音声復元手段、
低周波数帯域信号抽出手段によって抽出された低周波数帯域信号と低周波数帯域音声復元手段によって生成された低周波数帯域信号との、上記高周波数帯域信号への加算割合を、風音判定手段によって判定された風音レベルに応じて調整する調整手段、ならびに
調整手段によって調整された後の両低周波数帯域信号を上記高周波数帯域信号に加算する加算手段、
を備えていることを特徴とする音声信号処理装置。 - 調整手段は、風音判定手段によって判定された風音レベルが大きい場合には、低周波数帯域信号抽出手段によって抽出された低周波数帯域信号に比べて、低周波数帯域音声復元手段によって生成された低周波数帯域信号の上記高周波数帯域信号への加算割合が高くなるように、両低周波数帯域信号の上記高周波数帯域信号への加算割合を調整し、風音判定手段によって判定された風音レベルが小さい場合には、低周波数帯域音声復元手段によって生成された低周波数帯域信号に比べて、低周波数帯域信号抽出手段によって抽出された低周波数帯域信号の上記高周波数帯域信号への加算割合が高くなるように、両低周波数帯域信号の上記高周波数帯域信号への加算割合を調整するものであることを特徴とする請求項1に記載の音声信号処理装置。
- 請求項1および請求項2に記載の音声信号処理装置のうちのいずれか1つの音声信号処理装置を備えていることを特徴とする録音機器。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006259217A JP4827675B2 (ja) | 2006-09-25 | 2006-09-25 | 低周波帯域音声復元装置、音声信号処理装置および録音機器 |
US11/902,210 US20080077399A1 (en) | 2006-09-25 | 2007-09-20 | Low-frequency-band voice reconstructing device, voice signal processor and recording apparatus |
Applications Claiming Priority (1)
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---|---|---|---|
JP2006259217A JP4827675B2 (ja) | 2006-09-25 | 2006-09-25 | 低周波帯域音声復元装置、音声信号処理装置および録音機器 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008076988A JP2008076988A (ja) | 2008-04-03 |
JP4827675B2 true JP4827675B2 (ja) | 2011-11-30 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2006259217A Expired - Fee Related JP4827675B2 (ja) | 2006-09-25 | 2006-09-25 | 低周波帯域音声復元装置、音声信号処理装置および録音機器 |
Country Status (2)
Country | Link |
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US (1) | US20080077399A1 (ja) |
JP (1) | JP4827675B2 (ja) |
Families Citing this family (13)
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US8326617B2 (en) * | 2007-10-24 | 2012-12-04 | Qnx Software Systems Limited | Speech enhancement with minimum gating |
US8015002B2 (en) | 2007-10-24 | 2011-09-06 | Qnx Software Systems Co. | Dynamic noise reduction using linear model fitting |
US8606566B2 (en) * | 2007-10-24 | 2013-12-10 | Qnx Software Systems Limited | Speech enhancement through partial speech reconstruction |
US9230222B2 (en) * | 2008-07-23 | 2016-01-05 | The Quantum Group, Inc. | System and method enabling bi-translation for improved prescription accuracy |
GB0822537D0 (en) | 2008-12-10 | 2009-01-14 | Skype Ltd | Regeneration of wideband speech |
GB2466201B (en) * | 2008-12-10 | 2012-07-11 | Skype Ltd | Regeneration of wideband speech |
US9947340B2 (en) * | 2008-12-10 | 2018-04-17 | Skype | Regeneration of wideband speech |
US9525569B2 (en) * | 2010-03-03 | 2016-12-20 | Skype | Enhanced circuit-switched calls |
JP5183828B2 (ja) | 2010-09-21 | 2013-04-17 | 三菱電機株式会社 | 雑音抑圧装置 |
US9280984B2 (en) * | 2012-05-14 | 2016-03-08 | Htc Corporation | Noise cancellation method |
US9613633B2 (en) | 2012-10-30 | 2017-04-04 | Nuance Communications, Inc. | Speech enhancement |
CN108364657B (zh) | 2013-07-16 | 2020-10-30 | 超清编解码有限公司 | 处理丢失帧的方法和解码器 |
CN106683681B (zh) * | 2014-06-25 | 2020-09-25 | 华为技术有限公司 | 处理丢失帧的方法和装置 |
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2006
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2007
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US20080077399A1 (en) | 2008-03-27 |
JP2008076988A (ja) | 2008-04-03 |
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