QUANTIZATION PROCESS FOR A PREDICTOR FILTER FOR VOCODER OF VERY LOW BIT RATE

摘要

The procedure consists of breaking down the speech signal into packets of a predetermined number of frames of constant duration by allocating to each frame a weight according to the average strength of the speech signal in the frame, to determine for each frame the corresponding coefficients of the predictor filter by taking those already determined in the neighbouring frames if the frame's weight is similar to at least one of the neighbouring frames or by calculating the weight individually or by interpolation between the coefficients of neighbouring frames in other cases.