A method based on the MTF concept for dereverberating the power envelope from the reverberant signal

Author

Unoki, Masashi ; Furukawa, Masakazu ; Sakata, Keigo ; Akagi, Masato

Author_Institution

Sch. of Inf. Sci., Japan Adv. Inst. of Sci. & Technol., Ishikawa, Japan

Volume

1

fYear

2003

fDate

6-10 April 2003

Abstract

This paper proposes a method for dereverberating the power envelope from the reverberant signal. This method is based on the modulation transfer function (MTF) and does not require that the impulse response of an environment be measured. It improves upon the basic model proposed by Hirobayashi et al. (1998) regarding the following problems: (i) how to precisely extract the power envelope from the observed signal; (ii) how to determine the parameters of the impulse response of the room; and (iii) a lack of consideration as to whether the MTF concept can be applied to a more realistic signal. We have shown that the proposed method can accurately dereverberate the power envelope from the reverberant signal.

Keywords

acoustic signal processing; architectural acoustics; feature extraction; filtering theory; inverse problems; reverberation; transient response; MTF concept; inverse filtering method; modulation transfer function; observed signal; power envelope dereverberation; power envelope extraction; reverberant signal; room acoustics; room impulse response parameters; speech recognition systems; speech signal processing; Acoustic measurements; Acoustic pulses; Filtering; Information science; Microphone arrays; Pulse measurements; Signal processing; Speech; Transfer functions; White noise;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03). 2003 IEEE International Conference on

ISSN

1520-6149

Print_ISBN

0-7803-7663-3

Type

conf

DOI

10.1109/ICASSP.2003.1198924

Filename

1198924