Today's Topics:
- Re: PCM Outout Quality Issue (Rob Leslie)
Subject:
Re: [mad-dev] PCM Outout Quality Issue
(From):
Rob Leslie rob@mars.org
Date:
Fri, 25 Jul 2003 13:36:13 -0700
(To):
mad-dev@lists.mars.org
On Wednesday, July 23, 2003, at 08:27 PM, Yeh You-Ying wrote:
What I did is just to decode a mp3 file with my minimad, and generate
an output, for instance, pcm.wav.
I played this raw pcm data with Sound Forge.
Ohhh...it sounds terrible.
It's important to realize minimad doesn't output a WAV file. It just
writes raw PCM data in little-endian format. Make sure Sound Forge
isn't treating the file as a WAV file or reading the PCM as big-endian
samples.
Thanks for your reply.
I knew that the output is raw PCM data.
And the Sound Forge can play raw PCM data no matter what extsion
filename is.
I can hear the PCM data via Sound Forge, just the quality is not good,
too much nosie.
As the decription of scale( ) in minimad.c, there is no noise shaping
for scaling.
It that the reason about the quality issue ?
Thanks a lot.