JP2008135892A - 音声処理装置および音声処理方法 - Google Patents
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- 230000004807 localization Effects 0.000 claims description 21
- 239000000284 extract Substances 0.000 claims description 3
- 238000004590 computer program Methods 0.000 claims description 2
- 238000000926 separation method Methods 0.000 abstract description 16
- 239000000203 mixture Substances 0.000 abstract description 2
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- 210000004556 brain Anatomy 0.000 description 11
- 238000001914 filtration Methods 0.000 description 7
- 230000001965 increasing effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000000873 masking effect Effects 0.000 description 4
- 238000007781 pre-processing Methods 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
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- 238000013459 approach Methods 0.000 description 2
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- 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
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- 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
- G10L19/0204—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 using subband decomposition
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- H04R2420/00—Details of connection covered by H04R, not provided for in its groups
- H04R2420/01—Input selection or mixing for amplifiers or loudspeakers
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- H—ELECTRICITY
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Abstract
【解決手段】音声処理装置16の入力部18においてユーザは、記憶装置12に記憶された音楽データから同時に再生したい複数の音楽データを選択する。再生装置14は、制御部20による制御のもと、選択された音楽データをそれぞれ再生し複数の音声信号を生成する。音声処理部24は制御部20による制御のもと、各音声信号に対し、周波数帯域の割り当ておよび周波数成分の抽出、時分割、周期的な変調、加工、定位の割り当てを行い、音声信号の分離情報および強調の度合いに係る情報を付加する。ダウンミキサー26は複数の音声信号を混合し、所定のチャンネル数を有する音声信号として出力し、出力装置30はそれを音響として出力する。
【選択図】図1
Description
Claims (9)
- 複数の音声信号を同時に再生する音声処理装置であって、
ユーザに聴感上分離して聞こえるように各入力音声信号に対して所定の処理を施す音声処理部と、
前記処理を施された前記複数の入力音声信号を混合し所定のチャンネル数を有する出力音声信号として出力する出力部と、を備え、
前記音声処理部は、複数の入力音声信号のそれぞれに対し、周波数帯域を所定の規則で分割してなる複数のブロックから選択されたブロックを割り当て、各入力音声信号から、割り当てたブロックに属する周波数成分を抽出する周波数帯域分割フィルタを備え、
前記周波数帯域分割フィルタは、前記複数の入力音声信号の少なくともいずれかに、不連続な複数のブロックを割り当てることを特徴とする音声処理装置。 - 前記複数のブロックは、周波数帯域をBarkの臨界帯域の境界周波数のいずれかによって分割してなることを特徴とする請求項1に記載の音声処理装置。
- 前記複数の入力音声信号ごとに前記複数のブロックのうち優先的に割り当てを行うブロックを決定する特徴帯域抽出部をさらに備え、
前記周波数帯域分割フィルタは、前記複数のブロックのうち前記特徴帯域抽出部が決定した、ある入力音声信号に対し優先的に割り当てを行うブロック以外のブロックを、他の入力音声信号に割り当てることを特徴とする請求項1または2に記載の音声処理装置。 - 前記音声処理部は、複数の入力音声信号のそれぞれの振幅を、共通の周期で位相を異ならせて時間変調させる時分割フィルタをさらに備えたことを特徴とする請求項1から3のいずれかに記載の音声処理装置。
- 前記音声処理部は、複数の入力音声信号の少なくともいずれかに対し、所定の周期で所定の音響加工処理を施す変調フィルタをさらに備えたことを特徴とする請求項1から3のいずれかに記載の音声処理装置。
- 前記音声処理部は、複数の入力音声信号の少なくともいずれかに対し、定常的に所定の音響加工処理を施す加工フィルタをさらに備えたことを特徴とする請求項1から3のいずれかに記載の音声処理装置。
- 前記音声処理部は、複数の入力音声信号のそれぞれに対して異なる定位を与える定位設定フィルタをさらに備えたことを特徴とする請求項1から3のいずれかに記載の音声処理装置。
- 複数の入力音声信号のそれぞれに対し、互いにマスキングされない周波数帯域を割り当てるステップと、
各入力音声信号から、割り当てた周波数帯域に属する周波数成分を抽出するステップと、
各入力音声信号から抽出された周波数成分からなる複数の音声信号を混合し所定のチャンネル数を有する出力音声信号として出力するステップと、
を含むことを特徴とする音声処理方法。 - 周波数帯域を所定の規則で分割してなる複数のブロックから選択されたブロックのパターンを記憶したメモリを参照して、複数の入力音声信号のそれぞれに対し前記パターンを割り当てる機能と、
各入力音声信号から、割り当てた前記パターンを構成するブロックに属する周波数成分を抽出する機能と、
各入力音声信号から抽出された周波数成分からなる複数の音声信号を混合し所定のチャンネル数を有する出力音声信号として出力する機能と、
をコンピュータに実現させることを特徴とするコンピュータプログラム。
Priority Applications (6)
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JP2006319368A JP4823030B2 (ja) | 2006-11-27 | 2006-11-27 | 音声処理装置および音声処理方法 |
CN2007800017072A CN101361124B (zh) | 2006-11-27 | 2007-06-26 | 声音处理装置和声音处理方法 |
PCT/JP2007/000699 WO2008065731A1 (fr) | 2006-11-27 | 2007-06-26 | Processeur audio et procédé de traitement audio |
US12/093,049 US8121714B2 (en) | 2006-11-27 | 2007-06-26 | Audio processing apparatus and audio processing method |
ES07790221.1T ES2526740T3 (es) | 2006-11-27 | 2007-06-26 | Procesador de audio y método de procesamiento de audio |
EP07790221.1A EP2088590B1 (en) | 2006-11-27 | 2007-06-26 | Audio processor and audio processing method |
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EP (1) | EP2088590B1 (ja) |
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EP2434491A1 (en) | 2010-09-28 | 2012-03-28 | Sony Ericsson Mobile Communications Japan, Inc. | Sound processing device and sound processing method |
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US9195431B2 (en) | 2012-06-18 | 2015-11-24 | Google Inc. | System and method for selective removal of audio content from a mixed audio recording |
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US8121714B2 (en) | 2012-02-21 |
JP4823030B2 (ja) | 2011-11-24 |
EP2088590A4 (en) | 2013-08-14 |
ES2526740T3 (es) | 2015-01-14 |
US20080269930A1 (en) | 2008-10-30 |
EP2088590A1 (en) | 2009-08-12 |
WO2008065731A1 (fr) | 2008-06-05 |
EP2088590B1 (en) | 2014-12-10 |
CN101361124B (zh) | 2011-07-27 |
CN101361124A (zh) | 2009-02-04 |
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