As far as the little bit of audio delay you hear... every system I've been on, or put together has that delay. 
Some people are quick to unkey the mic, while others wait about a second to unkey, after they are done talking. 
Just take into consideration the time you gotta key up, before you're heard (pl tone decode on the rotr, dcs, whatever) and add that to your unkey process and you'll never hear the repeated audio again.

If you want to hear the 'digital delay', turn on another radio and listen to the local repeater while you talk into it.

On Wed, Nov 21, 2018, 20:28 Ken Koster <n7ipb@wetnet.net wrote:

On Wednesday, November 21, 2018 5:20:37 PM PST jerutley@gmail.com wrote:

> Hello list!

>

...

 

>

> Another question - can the AllStar version of Asterisk directly play

> MP3-formatted audio? I'm considering some functions using Amazon's Polly

> Text-to-Speech service, which provides MP3 files, so I'm wondering if

> Asterisk could play them directly, or if I'd have to use sox to convert them

> to another format first.

 

Use 'sox' to convert mp3's to a format you can use.

sudo apt-get install sox libsox-fmt-mp3

 

For example you can use 'sox xxx.mp3 xxx.wav' to convert from mp3 to wav.

Sox supports almost 100 different sound file formats as well as a large number of special effects.

...

--

Ken - N7IPB

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