[asterisk-users] .GSM -> .WAV (or ,MP3) Conversion

[Danny Nicholas]

In sox 14.0.1 the -1 is a one byte sample, -2 is a two byte sample,
therefore the command is sampling one-in, two-out.

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Steve Edwards
Sent: Tuesday, April 14, 2009 9:08 AM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [asterisk-users] .GSM -> .WAV (or ,MP3) Conversion

On Tue, 14 Apr 2009, Arjan Kroon | Mobillion wrote:

> I record the message in ULAW
>
> After that I call sox with this command:
> /usr/bin/sox -c 1 -1 -t ul -r 8000 $in_fl -t wav -2 -r 8000 -c 1
> $wav_fl

What are "-1" and "-2" for? Both sox 12.17.5 and 12.18.1 say they are 
invalid.

Thanks in advance,
------------------------------------------------------------------------
Steve Edwards      sedwards at sedwards.com      Voice: +1-760-468-3867 PST
Newline                                             Fax: +1-760-731-3000

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