Data compressing and expanding apparatus with time domain and frequency domain block floating

摘要: The input digital signal is divided into blocks each composed of a number samples, and first block floating applied to block. processed orthogonally transformed provide spectral coefficients. coefficients are bands, band including at least one coefficient. Second second band. Each the bands adaptively quantized by adaptive bit allocation circuit. Common circuitry or processing used determine size apply floating, which reduces complexity hardware and/or steps required.