The Quality of Synthesized Sounds
نویسنده
چکیده
Linear Predictive Coding (LPC) is a basic method used in speech signal processing. The purpose of this work is to implement a real-time LPC vocoder on a TMS320C6455 DSP board to assess the effect of the number of coefficients on sound quality for human voice, and bird and vehicle sounds. The experimental results show that there exists a threshold at which the sound quality is degraded. The threshold value may vary depending on the quality of the original input sound, the optimization level of LPC implementation, and the processing speed of the processor. In this work, signalto-noise ratio (SNR) is used as the quality measure to determine the threshold for C6455 DSP.
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تاریخ انتشار 2012