Title :
A novel noise robust and low bit rate speech coding algorithm
Author :
Umit Guz;Hakan Gurkan;B. Siddik Yarman
Author_Institution :
Dept. of Electron. Eng., Isik Univ., Istanbul, Turkey
Abstract :
In this work, a new noise robust and variable length frame based speech modeling method is introduced. This method consists of three major steps which includes noise removal algorithm, coding and encoding algorithms, respectively. Coding and encoding parts are developed based on SYMPES (SYsteMatic Procedure for Predefined Envelope and Signature sequence sets). These sets have been developed in two types which represent voiced and unvoiced parts of the speech signals separately in order to obtain more efficient coding strategy and higher compression ratio while preserving the perceptual quality of the speech signals. As an extension of our previous works our new framework is not only consider the coding of the clean speech signals but also noisy speech signals. The new noise robust module suppresses the noise and delivers the clean speech signal to the newly designed modeling part. The modeling part promises higher compression ratios by switching to the more appropriate type of predefined sets take into account the voiced and unvoiced frames.
Keywords :
"Noise robustness","Bit rate","Speech coding","Working environment noise","Speech enhancement","Speech synthesis","Signal to noise ratio","Encoding","Speech processing","Databases"
Conference_Titel :
Computer and Information Sciences, 2009. ISCIS 2009. 24th International Symposium on
Print_ISBN :
978-1-4244-5021-3
DOI :
10.1109/ISCIS.2009.5291876