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对AAC格式不同采样率的录制

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最后由 hamishwillee 在 14 Jun 2013 编辑

简述

并非所有在TMdaAudioDataSettings中描述的采样率和声道设置都可以手机上进行PCM录音。例如,诺基亚6210 Navigator只能在8kHz, 16kHz和48kHz采样率下录制。如果需要转化为不同采样率的AAC格式音频(如24kHz或32kHz),那么PCM数据需要在传递到CMMFCodec录制前重新采样。

解决方案

在我们将PCM数据传递到CMMFCodec进行AAC编码前,需要完成增加或缩减取样算法以便将其转换为所需采样率。

This page was last modified on 14 June 2013, at 04:58.
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