Title :
Low Power Embedded Speech Enhancement System Based on a Fixed-Point DSP
Author :
Cai, Yu ; Yuan, Jianping ; Ma, Xiaochuan ; Hou, Chaohuan
Author_Institution :
Lab. of Digital Syst. Integration, Chinese Acad. of Sci., Beijing, China
Abstract :
In this paper, we introduce a practical real-time speech enhancement system based on the TI TMS320VC5509A digital signal processor (DSP). A stereo audio codec is used as the analog input/output (I/O). The algorithm for noise reduction is an improved and optimized spectral-subtraction method. The detailed design of the hardware and software is described and the experiments show an improved performance. Low power consumption and high efficiency make the whole system suitable for portable devices.
Keywords :
audio coding; digital signal processing chips; speech enhancement; TI TMS320VC5509A digital signal processor; analog input-output; fixed-point DSP; low power embedded speech enhancement system; noise reduction; portable devices; spectral-subtraction method; stereo audio codec; Codecs; Design methodology; Digital signal processing; Digital signal processors; Hardware; Noise reduction; Optimization methods; Real time systems; Signal processing algorithms; Speech enhancement;
Conference_Titel :
Dependable, Autonomic and Secure Computing, 2009. DASC '09. Eighth IEEE International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-0-7695-3929-4
Electronic_ISBN :
978-1-4244-5421-1
DOI :
10.1109/DASC.2009.30
