Wolfgang Borgon wrote:> A RAW file I created after converting from MP3 and WAV, sounded raspy.
> Does anyone have any tips for creating the best quality voice
recordings?>
Generally you'd use a good-quality microphone for your recordings. The adage
"Garbage in = garbage out" couldn't be more true in this instance.
If you're
looking for studio-quality recordings, use studio-quality equipment. Those $5
mics won't be satisfactory :)
Then there's issues of sibilance, which isn't that apparent when
you're
recording at a higher rate, but is really pronounced when you downsample to 8k
for the GSM files. The "raspiness" you encountered was probably
sibilance, where
words that have the "ess" sound in them are boosted due to the
position of the
microphone relative to the person being recorded.
If you're going the budget route, at least get a decent quality sound card
to
record with. Another important factor to consider is your recording location --
try and record in as quiet a place as you can find.
Some audio processing software (Goldwave, Audacity et al) have filters that can
knock out background noise, alter volume, apply equalization etc. You can use
these effects to enhance the recording. But again, if your original recording
already sounds bad there's not much you can do to make it sound nice.
Cheers,
Flynn