[Asterisk-Users] MP3 or OGG

[BJ Weschke]

 Check out the new app_mixmonitor app with 1.2b2. It produces one file
that is mixed already.

On 11/8/05, Waldo Rubinstein <waldo at trianet.net> wrote:
> Hilton,
>
> AFAIK, you can optionally record in gsm. However, I think * won't do
> it natively. It will do -in and -out wav files, soxmix them together
> and then convert them to gsm. I'm offloading all of that to a
> different machine and just leaving * to create the raw -in and -out
> wav files.
>
> Maybe I'm wrong too, so comments are welcomed.
>
> Thanks,
> Waldo
>
> On Nov 8, 2005, at 3:14 AM, Quark IT - Hilton Travis wrote:
>
> > Hi Waldo,
> >
> > Doesn't * record to .gsm file initially and then convert these to .wav
> > later?  I may be totally off the mark here, and if I am, I welcome the
> > correction.
> >
> > In that case, why not leave the files in .gsm format instead of
> > translating them into another lossy format?  Obviously if * records
> > conversations as .wav files then I'd be leaning toward Speex
> > (Vorbis) as
> > it is a "suited to speech" compression format.
> >
> > Both Speex and ogg are Open Source, therefore patent issues are likely
> > non-existent.  MP3, otoh, is fine if you use one of their approved
> > apps,
> > and not if you use anything else.  I'm steering clear of .mp3 (and
> > have
> > been for quite a few years now).
> >
> > --
> >
> > Regards,
> >
> > Hilton Travis                          Phone: +61 (0)7 3344 3889
> > (Brisbane, Australia)                  Phone: +61 (0)419 792 394
> > Manager, Quark IT                      http://www.quarkit.com.au
> >          Quark Group                   http://quarkgroup.com.au/
> >
> > Microsoft Small Business Specialists
> >
> > http://www.threatcode.com/ <-- its now time to shame poor coders
> > into writing code that is acceptable for use on today's networks
> >
> > War doesn't determine who is right.  War determines who is left.
> >
> > This document and any attachments are for the intended recipient
> >   only.  It may contain confidential, privileged or copyright
> >      material which must not be disclosed or distributed.
> >
> >> -----Original Message-----
> >> From: asterisk-users-bounces at lists.digium.com
> >> [mailto:asterisk-users-bounces at lists.digium.com]
> >> On Behalf Of Waldo Rubinstein
> >> Sent: Tuesday, 8 November 2005 11:32
> >>
> >> Wasn't aware of it, but if quality is good, it makes sense
> >> since all I'm archiving is speech.
> >>
> >> Will evaluate further.
> >>
> >> Thanks,
> >> Waldo
> >>
> >> On Nov 7, 2005, at 7:14 PM, Mark Edwards wrote:
> >>
> >>> I would recommend vorbis speex for this.
> >>> You can get windows drivers to read speex files directly.
> >>>
> >>> Vorbis are the same bunch that develops ogg.
> >>>
> >>> Ogg and mp3 are more suited to music rather than speech.
> >>> Speex is a much better fit for speech archiving.
> >>>
> >>> Mark
> >>>
> >>>
> >>> -----Original Message-----
> >>> From: BJ Weschke [mailto:bweschke at gmail.com]
> >>> Sent: Tuesday, 8 November 2005 5:52 AM
> >>>
> >>> You're probably not going to be violating any patent
> >>> protections by using OGG instead of MP3. As far as
> >>> compression goes, I've found the difference between
> >>> the two of them to be negligible. I've always used
> >>> OGG when possible to stay "IP safe".
> >>>
> >>> On 11/7/05, Waldo Rubinstein <waldo at trianet.net> wrote:
> >>>> I'm trying to archive out call recordings and would
> >>>> appreciate some feedback as to which audio compression is
> >>>> more recommended MP3 or OGG. In the past, I've use lame
> >>>> to convert to MP3, but I noticed the audio volume drops
> >>>> significantly. Is it just a setting on the command line
> >>>> of lame or is OGG better? Which achieves higher
> >>>> compression rates while maintaining call quality?
> >>>>
> >>>> Thanks,
> >>>> Waldo
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