它使用值1作为声道的默认值，使用值44100 Hz作为默认的音频采样频率。
It USES the value of 1 as the default for the audio channels and the value of 44100 Hz as the default audio sampling frequency.
对文件大小的贡献，按重要性的顺序，依次是视频比特率、音频采样频率、音频比特率，然后是帧速。
Contributing to the file size, in order of importance, are the parameters that set the video bit rate, audio sample frequency, audio bit rate, then frame size.
Flash的音频采样频率和音频比特率均低于默认的44100 Hz，而Windows Media Player和QuickTime的则高于默认值。
The audio sample frequency and audio bit rate for Flash are less than the default value of 44100 Hz while those for Windows Media Player and QuickTime are higher than the default value.
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