公开(公告)号：US06738428B1

公开(公告)日：2004-05-18

申请号：US09520214

申请日：2000-03-07

申请人： Teiji Nagatomo

发明人： Teiji Nagatomo

IPC分类号： H04B1406

CPC分类号： H04B14/068

摘要： A predictive decoder removes granular noise from the decoded signal by one of the following methods: discarding a predetermined number of least significant bits of the decoded signal; taking the sum of each two successive values of the decoded signal and dividing the sum by two to obtain an output signal; or resetting the decoded signal to a fixed value during inactive periods. Inactive periods are detected according to criteria involving an adaptively adjusted step size and a quantized difference signal, both of which are obtained in the decoding process.

摘要翻译： 预测解码器通过以下方法之一从解码信号中去除粒度噪声：丢弃解码信号的预定数量的最低有效位; 取得解码信号的每两个连续值的和，并将和除以2以获得输出信号; 或者在非活动时段期间将解码信号重置为固定值。 根据涉及自适应调整的步长和量化差信号的标准来检测非活动期，二者均在解码过程中获得。