[Vorbis-dev] LPC in OggVorbis encoder

Michael Smith msmith at xiph.org
Thu Feb 23 01:07:07 PST 2006


On 2/23/06, parul <parul.agarwal at einfochips.com> wrote:
> In OggVorbis encoder the code is making use of LPC (function
> _preextrapolate_helper() ). What is the actual use of that? I removed
> the LPC module and still the code works fine. Can we do that? what will
> be the effect of removing?

This is basically used to smooth out the very start of the audio, to
make it more easily encodable (and to reduce the chances of bad
artifacts at the start).

Mike


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