Low-delay low-bit-rate speech coder

摘要

A vector quantizing speech coder includes a Short-Term-Predictive filter which receives originally sampled speech signal s(n) and decorrelates it into a residual signal r(n). A device is provided to quantize the residual signal r(n) at a low bit rate. The device also generates a reconstructed signal r(n) from which coefficients for adjusting the Short-Term-Predictive filter are dynamically derived.