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 _______________________________________________ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
