On Sun, Apr 10, 2011 at 11:07 AM, Douglas Quagliana dquagliana@aol.comwrote:
Save your recordings as .WAV files. Don't use MP3 format and don't convert the recordings into MP3 recordings. Leave the recordings as big huge .WAV files.
Let me stress the importance of this. MP3 is a "lossy" format, designed only to make something that "sounds like" the original signal did to the human ear. It is not intended for digitally modulated signals that are to be decoded by a modem!
Although the BPSK1000 format has actually been decoded from an MP3-compressed copy, this came as quite a surprise to me - it's certainly not something to rely on!
A *lossless* compression scheme like FLAC, Shorten or Apple Lossless would be fine, if you have one. But if you're not sure, just keep the original .wav files. Thanks!