Effect of MMSE- STSA Algorithm in CELP and MELPSpeech Coders
نویسندگان
چکیده
The role of speech coding is to reduce the bit rate by maintaining good speech quality. In order to improve the perceptual quality of degraded speech, different speech enhancement methods can be used. So, it is worthwhile to do research in joint systems (Speech Enhancement and Low bit rate speech coders). The work reported in this paper shows the improvement in the perceptual quality of speech coder outputs by incorporating speech enhancement technique. The simulation results of Code Excited Linear Prediction (CELP) and Mixed Excited Linear Prediction (MELP) speech coders with Minimum Mean Square Error Spectral Amplitude Estimator (MMSE-STSA) enhancement technique is analyzed in terms of objective quality measures and using PRAAT software.
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