Length encoder and decoder adaptive block transform and adaptive transform with adaptive window for high quality audio signals.

摘要

The invention generally relates to encoding and decoding DIGITAL TRANSFORMATION low speed BITS transfer, HIGH QUALITY OF THE INFORMATION RELATING TO SOUND SIGNALS, SUCH AS THE SIGNALS OF MUSIC. More particularly, the invention relates to a ANALYSIS / SYNTHESIS OF SIGNALS encoding and decoding. The invention can optimize the compromise CODES CONVERSION BETWEEN RESOLUTIONS OF TIME AND RESOLUTIONS OF FREQUENCY BASED selected so ADAPTIVE block length TRANSFORMATION FOR EACH SEGMENT OF SOUND SCANNED AND / OR can optimize coding gain BASED SELECTING ADAPTIVE TRANSFORMATION OF WAY AND / OR ADAPTABLE selected so the analysis window WINDOW OR PAR analysis / synthesis.