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Topic: Converting joint stereo to mono (Read 3973 times) previous topic - next topic
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Converting joint stereo to mono

I hope this question is not too basic for this forum.
If I am converting a 64 kbit/s CBR joint stereo mp3 file to mono (using dBpoweramp), what bitrate should I use to maximise quality but prevent up-sampling?

Converting joint stereo to mono

Reply #1
What do you mean by up-sampling?

If the original material is nearly mono already then the quality of the 64 kbit joint stereo is essentially the same as it would have been in 64 kbit mono.

If, on the other hand, there was considerable stereo separation then that would have taken up some of the bits and the quality would be somewhat less than a 64 kbit mono version.

If you transcode from mp3 to mp3 then there will be some loss in quality, so you should reencode to a higher bitrate to minimize the loss. It has been reported that as far as lossy to lossy transcoding, mp3 to mp3 is among the worst for loss in quality.