Podcast sample rate

Dave Lambley dave at lambley.me.uk
Mon Jul 17 07:43:27 PDT 2017

On 17 July 2017 at 14:05, Jim web <web at audiomisc.co.uk> wrote:
> The main problem with 48k -> 44.1k resampling is that it will risk adding
> artifacts. If you're wanting to save bits it would make more sense to tell
> a lossy encoder to simply ignore anything above a given HF limit. (Various
> BBC outlets used to do this some years ago.) The result can then remain 48k
> rate but have the allocated bits used for more detail at lower frequencies.

There are also CODEC internals to consider. The LAME people used to
recommend resampling down to 44.1kHz before encoding, because that was
the sample rate they had done most of their tuning against. For
playback, 48kHz files are relatively rare outside video, and receive
less testing. My old Sony Ericsson phone, for example, would play back
48kHz AAC with periodic digital splats.


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