8000 is also acceptable with some loss of accuracy
Do NOT use 11025, 22050, 44100 or other sample rates.
record a single track (mono)
Do NOT make a stereo recording.
Use 16-bit (a.k.a. linear, a.k.a. PCM) sampling.
Do NOT use ADPCM, mu-law, A-law, 8-bit, or 12-bit sampling.
Record clean audio
Loud background noise or overlapping speech or other
sounds will dramatically reduce accuracy, so keep it clean!
Use a good quality microphone and a low-noise
recording environment for the best results.
Singing is mostly okay, but singing accompanied by
musical instruments will break it.
Simultaneous overlapping voices will break the LSM,
so record one speaker at a time.
Most computer audio file formats are okay:
.wav (PC)
.aiff (Mac)
.au (Sun)
Make short recordings, up to a minute or two.
The LSM hits memory limitations on chunks longer than a couple
of minutes. This should be solved in the foreseeable future
when the system hardware is upgraded, but
meanwhile please submit recordings of a minute or two or maybe
three at most.
One
file for each line in the script is ideal, in fact, which means
that the recording engineer or initial audio track editor
should save the lines into separate audio files as well
as, or instead of, constructing a continuous, complete,
normal-paused or slugged audio track.