[arm-allstar] Voice ID on the Raspberry Pi

[David McGough]

Bill,

I'm not sure what's wrong, besides perhaps the sampling rate---AllStar and
asterisk for this project -strictly- use an 8KHz sampling rate for 
announcement files, etc...If you use a different rate, you'll have wacky 
sounding audio, just as you describe.

You are correct that you can find ancient documentation out there, much of 
it 5+ years old. But, you have to remember that the audio-related 
techniques used haven't changed in 10+ years!  So, in general, 
documentation about audio methods won't be a concern.

What documentation did you try to follow?


73, David KB4FXC




On Thu, 9 Jun 2016, William Freeman via arm-allstar wrote:

> Group:
> 
> I'm trying to get voice ID announcements to work on my node. (I am using a
> Pi 2.) I followed the directions to a "t" in the documentation; however,
> the audio is still coming out sounding like Elvin and the Chipmunks. For
> the heck of it, I slowed down the sampling to 2000 Hz, and it did sound a
> little bit better coming thru the Pi ... not the PC :). I also used an
> older repeater announcement for a box that is still running, but on a
> computer. That sounded like Elvin, too.
> 
> Is there something within the processor of the Pi that is causing this
> issue? I noticed the documentation appears to come from the pre-Pi/infancy
> of Pi days.
> 
> 73 Bill
> 
>