In an adaptive subband excited transform speech encoding system, a range of quantizers are available and are dynamically selected for each window of speech. The quantizers designated for individual subbands are determined to minimize mean squared error distortion in the recreated signal while using no...http://www.google.de/patents/US5235671?utm_source=gb-gplus-sharePatent US5235671 - Dynamic bit allocation subband excited transform coding method and apparatus
