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Title
Japanese: 
English:A MODIFIED ALGORITHM FOR MULTIPLE INPUT SPECTROGRAM INVERSION 
Author
Japanese: Wang Dongxiao, 亀岡 弘和, 篠田 浩一.  
English: Dongxiao Wang, Hirokazu Kameoka, Koichi Shinoda.  
Language English 
Journal/Book name
Japanese: 
English:Proc. Interspeech 2019 
Volume, Number, Page         page 4569-4573
Published date Sept. 2019 
Publisher
Japanese: 
English:ISCA 
Conference name
Japanese:INTERSPEECH 2019 
English:INTERSPEECH 2019 
Conference site
Japanese:グラーツ 
English:Graz 
File
DOI https://doi.org/10.21437/Interspeech.2019-3242
Abstract We propose a new algorithm to estimate the phase of speech signal in the mixture of audio sources under the assumption that the magnitude spectrum of each source is given. The pre- vious method, multiple input spectrogram inversion algorithm (MISI), often performs poorly when the magnitude spectro- grams estimated are not accurate. This may be because it im- poses a strict constraint that the summation of source wave- forms should be exactly the same as the mixture waveform. Our proposing algorithm employs a new objective function in which this constraint is relaxed. In this objective function, the difference between the summation of source waveforms and the mixture waveform is the target to be minimized. The perfor- mance of our method, modified MISI is evaluated on two dif- ferent experimental settings. In both settings it improves the audio source separation performance compared to MISI.

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