JP2008033230A5 - - Google Patents

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Publication number
JP2008033230A5
JP2008033230A5 JP2007035662A JP2007035662A JP2008033230A5 JP 2008033230 A5 JP2008033230 A5 JP 2008033230A5 JP 2007035662 A JP2007035662 A JP 2007035662A JP 2007035662 A JP2007035662 A JP 2007035662A JP 2008033230 A5 JP2008033230 A5 JP 2008033230A5
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JP
Japan
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parameter
audio
signal
audio data
loss
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JP2007035662A
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Japanese (ja)
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JP5056048B2 (en
JP2008033230A (en
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Publication of JP2008033230A5 publication Critical patent/JP2008033230A5/ja
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Claims (2)

音声データ復号装置であって、
音声データ中にロスを検出し、音声データデコーダがロス部分を補間する音声信号を出力する前に前記ロス後の音声フレームを受信したかを検出するロスディテクタと、
前記ロス後に受信した前記音声フレームを復号して復号音声信号を生成する前記音声データデコーダと、
前記復号音声信号の時間を反転させてパラメータを抽出する音声データアナライザと、
前記パラメータに所定の修正を行うパラメータ修正部と、
修正された前記パラメータを用いて合成音声信号を生成する音声合成部と、を備える音声データ復号装置。 An audio data decoding device,
A loss detector for detecting loss in the audio data and detecting whether the audio data decoder has received the lost audio frame before outputting an audio signal for interpolating the loss part;
The audio data decoder for decoding the audio frame received after the loss and generating a decoded audio signal;
An audio data analyzer for extracting parameters by inverting the time of the decoded audio signal;
A parameter correction unit for performing a predetermined correction on the parameter;
A speech data decoding device comprising: a speech synthesizer that generates a synthesized speech signal using the modified parameter. 前記パラメータが、スペクトルパラメータ、遅延パラメータ、適応コードブックゲイン、正規化残差信号、または正規化残差信号ゲインである前記請求項１に記載の音声データ復号装置。 The speech data decoding apparatus according to claim 1, wherein the parameter is a spectrum parameter, a delay parameter, an adaptive codebook gain, a normalized residual signal, or a normalized residual signal gain.
JP2007035662A 2007-02-16 2007-02-16 Audio data decoding device Expired - Fee Related JP5056048B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2007035662A JP5056048B2 (en) 2007-02-16 2007-02-16 Audio data decoding device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007035662A JP5056048B2 (en) 2007-02-16 2007-02-16 Audio data decoding device

Related Parent Applications (1)

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JP2006204781 Division 2006-07-27 2006-07-27

Publications (3)

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JP2008033230A JP2008033230A (en) 2008-02-14
JP2008033230A5 true JP2008033230A5 (en) 2009-07-09
JP5056048B2 JP5056048B2 (en) 2012-10-24

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JP2007035662A Expired - Fee Related JP5056048B2 (en) 2007-02-16 2007-02-16 Audio data decoding device

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Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005157045A (en) * 2003-11-27 2005-06-16 Matsushita Electric Ind Co Ltd Voice transmission method

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