Dereverberation using variance of amplitude between past and current signals

Autor:	Tomonari Hayashi, Tatsuo Yamabuchi, Shigeki Hirobayashi
Rok vydání:	2003
Předmět:	Reverberation Signal processing Amplitude Audio signal Computer science Acoustics Frame (networking) Waveform Deconvolution Electrical and Electronic Engineering Signal
Zdroj:	IEEJ Transactions on Electronics, Information and Systems. 123:1665-1666
ISSN:	1348-8155 0385-4221
Popis:	We propose a method to recover the original sound waveform from the observed sound waveform without using the inverse filtering of the room transfer function. Reverberation is caused by the echo element of the original sound signal. In this study, short time frame signals subdivided reverberant speech by time windowing, and we attempted to reduce the echo influence by subtracting previous frame signals from the current frame signal. Weighing coefficient and adjusted time for the subtractions are determined by correlation between past and current signals. In the case that reverberation time is about 1 sec, the result of simulation shows good recovery of original speech.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::57abe07c2093f7f9ef47babb52d42f41 https://doi.org/10.1541/ieejeiss.123.1665 Zobrazit plný text záznamu