Changing the Format
When changing the sample rate, bit depth, and number of channels of an audio file, several operations are performed.
- Sample Rate
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If a new sample rate is specified, a sample rate conversion is performed.
- Bit Depth
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If a different bit depth is specified, the file is either truncated down to 8 bits, or padded up to 64 bits. If you are converting to a lower bit depth, you should consider adding dithering.
- Mono/Stereo
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If the file is converted from mono to stereo, the same material is used in both channels. If the conversion is from stereo to mono, a mix of the two channels is created.
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If you only want to change the bit depth, you can do this in the Audio Properties section of the Info window instead, and then save the audio file.
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For high quality mastering purposes, it is not recommended to change the sample rate and number of channels using the Audio Properties section, but instead use plug-ins and functions of the Master Section.