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J820 'Voice Recorder'

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Mjolnir Page Icon Posted 2019-12-08 10:19 PM
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I had occasion this morning to want to copy some voice recordings I made on my Win 10 laptop to my J820. Those made on Windows are (.M4a)s and while 'Voice Recorder' correctly identified them as such it made no effort to play them. I did a search and came across where Rich had helped a user make a custom ringtone using online resources so, after some trial and error, I thought I'd share the method I used.
I used ffmpeg with the Windows Sub-system for Linux (WSL) to run the following one liners.
ffmpeg -i <infile>.m4a -ar 8000 -acodec pcm_u8 -ac 1 <outfile>.wav
Plays back fine on the J820

and:

ffmpeg -v 5 -y -i <infile>.m4a -acodec libmp3lame -ac 2 -ab 192k <outfile>.mp3
I often embed custom voice recording mp3s in Google Earth .kmz files.


https://www.hpcfactor.com/forums/forums/thread-view.asp?tid=15861&st...
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Yoldering - 2011-03-03 2:10 PM

In the past I have recorded the audio from my desktop to the voice recorder on my MobilePro, then I emailed it back to my desktop and converted it from there. I think Rich's way is a lot easier. I have not had the need to do that for a few years though. Oh, and after all of that work the sound quality was really poor!


and:
post #8

Quote
Rich Hawley - 2011-03-03 3:59 PM

My method was born from necessity...I had no desktop conversion software, so I had to find on-line resources...

What a great way to make your own custom ring tones for a cell phone, eh?
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stingraze Page Icon Posted 2019-12-09 2:33 AM
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nice!

It will be cool if you could make a bash script or perl script that gets input names from stdin and converts in batch to .wav so we can listen music/audio/voice on our H/PCs.

Edited by stingraze 2019-12-09 2:34 AM
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C:Amie Page Icon Posted 2019-12-09 7:27 AM
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Great post. ffmpeg can be a nightmare for new users to get to grips with. I know that I completely forget every time I use it.
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Mjolnir Page Icon Posted 2019-12-09 10:19 AM
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C:Amie - 2019-12-09 7:27 AM

Great post. ffmpeg can be a nightmare for new users to get to grips with. I know that I completely forget every time I use it.

Thanks, I know what you mean. I use many of the linux utilities and programs so infrequently that there is always a learning curve before the next instance, especially from the cmd line.

@stingraze If someone else doesn't come up with something first I'll muddle around with it for a while. If I have to I'll enlist some of the boys and girls at linuxquestions dot org. Some of those people can whip out a script with the off hand while eating potato chips with the other and watch a ballgame while doing so!
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Mjolnir Page Icon Posted 2019-12-10 12:23 AM
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stingraze - 2019-12-09 2:33 AM

nice!

It will be cool if you could make a bash script or perl script that gets input names from stdin and converts in batch to .wav so we can listen music/audio/voice on our H/PCs.


Not a script but if you put all your m4a(s) into a folder you can cd there and run:
for f in *.m4a; do ffmpeg -i "$f" -acodec libmp3lame -ac 2 -ab 192k "${f%.*}.mp3"; done
or:
for f in *.m4a; do ffmpeg -i "$f" -ar 8000 -acodec pcm_u8 -ac 1 "${f%.*}.wav"; done




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stingraze Page Icon Posted 2019-12-10 1:35 AM
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Thanks!

I will try it once I get some .m4a files made.
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stingraze Page Icon Posted 2019-12-10 2:41 AM
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It worked on my Ubuntu 18.04 Linux Subsystem on Windows environment!



Edited by stingraze 2019-12-10 2:41 AM




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Mjolnir Page Icon Posted 2019-12-10 9:50 AM
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stingraze - 2019-12-10 2:41 AM

It worked on my Ubuntu 18.04 Linux Subsystem on Windows environment!

Good deal! I use WSL most of the time now. Lately I rarely fire up my stand-alone Linux or VM environments.
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stingraze Page Icon Posted 2019-12-10 9:12 PM
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Oops, it was Windows Subsystem for Linux. haha, my mistake.
I only started WSL several days ago. It seems pretty useful when using Windows environment.

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Mjolnir Page Icon Posted 2019-12-10 9:28 PM
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Drinking an 'adult' beverage while listening to Ray Stevens' Margaritaville.wav through 'Voice Recorder' from my Fat32, 128gb flash drive.

ffmpeg -i Margaritaville.mp3 -acodec pcm_s16le  -ar 44100 Margaritaville1.wav
not great of course, but not bad. And for smaller file:
ffmpeg -i Margaritaville.mp3 -acodec pcm_u8 -ar 22050 Margaritaville.wav



very poor quality.

Edited by Mjolnir 2019-12-10 9:53 PM




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CE Geek Page Icon Posted 2019-12-11 7:05 AM
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"Margaritaville" was written by Jimmy Buffett. I don't recall Ray Stevens doing a version of it.
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Mjolnir Page Icon Posted 2019-12-11 12:53 PM
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CE Geek - 2019-12-11 7:05 AM

"Margaritaville" was written by Jimmy Buffett. I don't recall Ray Stevens doing a version of it.
Correct of course. Must have been thinking of " It's Me Again Margaret." The quality wasn't that bad, lol.

Edited by Mjolnir 2019-12-11 12:58 PM
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