Patent ID: 6208962
Filing Date: 2001-03-27
Classification: G10L

Abstract:
A signal coding system for coding an input signal, said signal coding system comprising:a spectral parameter calculating circuit which derives a spectral parameter of said input signal;a predicting circuit which derives a predictive residual error based upon a result of a prediction of said input signal;an orthogonal transformation circuit which derives an orthogonal transformation coefficient by performing an orthogonal transformation on said predictive residual error;a coefficient calculating circuit which expresses an envelop of a plurality of said orthogonal transformation coefficients as a plurality of calculated coefficients; anda quantizer which quantizes said orthogonal transformation coefficients by expressing said orthogonal transformation coefficients as a plurality of pulses thereby producing a quantization result, said quantizer further outputs a combination of said spectral parameter, said calculated coefficients and said quantization result.