Title :
Single-channel speech dereverberation in acoustical environments
Author :
Joorabchi, Marjan ; Ghorshi, Seyed ; Sarafnia, Ali
Author_Institution :
Sch. of Sci. & Eng., Sharif Univ. of Technol.-Int. Campus, Kish Island, Iran
Abstract :
Reverberated speech signals in acoustical environments produces some problems such as reducing speech intelligibility, distinguishing speakers, locating source, quality for hands-free telephony, hearing aid, etc. Adaptive filters can be applied to reduce the reverberation effects or to dereverberate the received speech signals at microphone. In this paper a dereverberation method is proposed by applying an inverse filter to the received speech signals. Different values of the Room Impulse Response are used in the dereverberation procedure and the results are compared. The results show a significant improvement in the quality of the received signal for the desired reverberant environment. Furthermore, the mean opinion score (MOS) of subjective listening quality (LQ) and objective quality score from the perceptual evaluation of speech quality (PESQ) of two different values of RIR coefficient are compared.
Keywords :
acoustic signal processing; adaptive filters; microphones; reverberation; speech processing; MOS; PESQ; RIR coefficient; acoustical environments; adaptive filters; hands-free telephony quality; hearing aid; inverse filter; mean opinion score; microphone; objective quality score; perceptual evaluation of speech quality; received signal quality; reverberated speech signals; reverberation effect reduction; room impulse response value; single-channel speech dereverberation; source localisation; speaker distinguishability; speech intelligibility reduction; subjective listening quality; Educational institutions; Filtering algorithms; Microphones; Reverberation; Spectrogram; Speech; Vectors; Dereverberation; Inverse filter; Reverberation; Room Impulse Response (RIR); Single-channel;
Conference_Titel :
ELMAR (ELMAR), 2014 56th International Symposium
Conference_Location :
Zadar
DOI :
10.1109/ELMAR.2014.6923353