公开(公告)号：US20040010329A1

公开(公告)日：2004-01-15

申请号：US10191223

申请日：2002-07-09

Applicant: Silicon Integrated Systems Corp.

Inventor： Chung-Hsien Lee ,  Hsin-Yi Huang

IPC: G06F017/00

CPC classification number: G10L19/16 ,  G10L19/0212

Abstract: A method for reducing buffer requirements in a digital audio decoder. Firstly, N samples that have to be decoded for an audio channel at this time are extracted from a sub-frame of a bitstream. A sub-block of K PCM samples is calculated at a time by performing an inverse transform on the N extracted samples, and then the N extracted samples are discarded. Note that the number of extracted samples is greater than or equal to the number of the PCM samples in a generated sub-block, i.e., NnullK. The above steps are repeated until one PCM output sub-frame of the audio channel is fully obtained.

Abstract translation: 一种用于减少数字音频解码器中的缓冲器要求的方法。 首先，从比特流的子帧中提取此时必须对音频信道进行解码的N个样本。 通过对N个提取的样本进行逆变换，一次计算K个PCM样本的子块，然后丢弃N个提取的样本。 注意，提取的样本的数量大于或等于所生成的子块中的PCM样本的数量，即N> = K。 重复上述步骤，直到完全获得音频通道的一个PCM输出子帧。