On 02/11/2016 07:02 PM, stan wrote:
On Thu, 11 Feb 2016 15:12:43 -0500
Robert Moskowitz <rgm@xxxxxxxxxxxxxxx> wrote:
I have a couple Android recordings that I need to convert to wav, so
I went to use my copy of audacity-freeworld to do the conversion. It
crashed on opening the flie. I have the LAME files and haveworked
with mp3 files fine in the past.
AMR is *not* mp3.
I am aware of that. But one reference I found claimed that amr support
was in the LAME libraries.
I cannot find anything about problems on this.
I don't think you looked very hard.
It is well documented that my search foo is weak.
Anyone know anything about it or other methods to convert amr files?
"The amr file extension is for Adaptive Multi-Rate compressed audio.
Adaptive Multi-Rate (AMR) is an audio data compression scheme optimized
for speech coding."
That I found. Nice to know it is a nice TLA.
Use a tool like sox to convert the files to mp3 or wav directly.
sox /mypath/my_audio.amr /mypath/my_audio.mp3
or
sox /mypath/my_audio.amr /mypath/my_audio.wav
Then work with them in audacity. When you are done, if you want them
back in amr, reverse the process with sox.
Actually my first choice was to use audacity to do the conversion. Thus
I was trying to load amr into audacity. Audacity should not crash hard
on loading a codec it does not understand.
Given these were a couple speaches I captured and the person wanting
them only has Media Player 12 (and the knowledge base info on adding amr
to that is pretty obtuse), I was asked to send it as wav. I found a
website to upload to for the conversion. I checked the output and did
not find any mal stuff dropped in. So that is done.
I use VLC to listen to my amr recordings.
I used yumex and searched it for amr, and that did not offer sox. Google
search on amr conversion to wav did not offer sox. But thanks to you, I
know this now and will give it a try.
thanks
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