real-time implementation of g.723.1 speech coder using tms320vc5402 dsp chip
نویسندگان
چکیده
this paper presents a full duplex, real time implementation of itu-t g.723.1 [7,8] speech coder using the tms320c5402 dsp chip which is based on a 16 bit fixed-point architecture. an optimization method is proposed in order to reduce the total necessary cycle time consumed in real-time implementation. the multi-pulse maximum likelihood quantization (mp-mlq) excitation search block which is the most computation-intensive block in the coder is restructured to reduce the algorithmic redundancy. in addition, efficient filtering methods and memory management are used for further optimization. the bit-exact verification with the itu test vectors and performance evaluation aspects are also discussed in this paper.
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عنوان ژورنال:
international journal of information science and managementجلد ۲، شماره ۱، صفحات ۳-۱۲
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