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2400 bps Vocoder
Overview
SPIRIT 2400 bps vocoder is based on the classic LPC model, but it utilizes
Mixed Multi-Band Excitation (MMBE) model for excitation signal that ensures
correct transmission of all speech signals with tone, noise and mixed spectrum
components. It can be effectively used in all applications where storage
capacity and/or bandwidth are limited.
Features
High level of speech quality (MOS about 3.5)
2400 bps encoded bit stream rate
Frame size 20 ms
Algorithmic delay 40 ms
Noise robustness
Automatic built-in frame synchronization on input bit stream
Direct interface with PCM 8 KHz sampled data
Simple application interface
eXpressDSP compliant. Code is reentrant, supports multithreading and dynamic memory allocation. At the same time allows
