25 May
2005
25 May
'05
3:53 p.m.
Thanks for your reply.
On Tuesday 24 May 2005 15:58, anahata wrote:
Again thanks,
Marv
On Tue, May 24, 2005 at 02:44:04PM -0400, M P Smoak
wrote:
Yes, I think I can use a lower quality ogg file or perhaps mp3.
And I looked a bit at resampling. Am I correct in thinking that
it is good to record a high sample rate (say 44K), then normalize
the recorded conversation, and then resample to a lower sample rate
and save as an ogg or mp3?
In my work I use telephone in similar ways. In
both cases,
phone calls are data.
[snip]
But it's too big. Saving it as a .ogg file
with quality = 4
gets it down to about 5 meg, I think. So the question is
what's a good way to shrink it down?
For voice you could get away with a lower quality ogg and/or
resampling to a lower sample rate (digital telephony itself
uses 8kHz)
For the ultimate in voce compression however, there are free
GSM compression/decompresison tools. In debian the gsm-utils
pachage seems to the the thing you need, no doubt will pull in
all the various libgsm* packages too. I haven't used it, but
if you can get it to do what you want you waon't get better
voce compression.
You really lost me here. gsm-utils package is for communicating
with mobile phones. We are using conventional telephones, with
linux being involved only for recording and saving the calls on
conventional desktop/workstation machines. Presently, I record
using linux via rezound; audacity could be used instead on
the prefessors Windows laptop. Which linux/windows/mac recorders/
players utilize gsm compression?
what type file will it be that is easily
platform
independent
Ogg vorbis is quite portable. Don't know about the GSM tools.