[Freeswitch-users] FYI - new Amazon Web Services TTS option

Avi Marcus avi at avimarcus.net
Thu Apr 30 09:12:08 UTC 2020


I started building a proof of concept for Polly sounds for English. I
thought that Matthew neural version sounded pretty good, and we don't have
a Male voice (just 3x female voices).

https://github.com/avimar/freeswitch-sounds-polly

I don't have it automated to generate a whole set, but there's a bunch of
samples.
Also, can someone please chime in on downsampling... I assume we want
direct PCM but that's only available up to 16000. (And you need to add a
header to make it a normal readable wav)
Mp3 an ogg are available at 24000. Not sure what the best way to get our
samples are, I used sox and got a bunch of versions -- 8000 pcm direct from
amazon, 16000, 16000 downsampled from the ogg....

I also haven't tested mod_say for numbers and currencies to see how it
sounds... probably need to do something to make it flow better.

-Avi Marcus
BestFone

On Thu, Dec 1, 2016 at 4:30 PM Nathan Neulinger <nneul at mst.edu> wrote:

> I'm going to try and put together a sounds set from the freeswitch phrase
> file and will submit back to project.
>
> In my case, even if the word-to-word transitions are not as uniform as
> callie, it will allow my custom prompts to have
> the same voice as the system prompts.
>
> -- Nathan
>
> On 12/01/2016 04:58 AM, Vladyslav Zakhozhai wrote:
> > Hi Nathan,
> >
> > thank you for sharing this aws option. Looks very interesting.
> >
> > 2016-12-01 4:27 GMT+02:00 Nathan Neulinger <nneul at mst.edu <mailto:
> nneul at mst.edu>>:
> >
> >
> >
> https://aws.amazon.com/blogs/aws/polly-text-to-speech-in-47-voices-and-24-languages/
> >     <
> https://aws.amazon.com/blogs/aws/polly-text-to-speech-in-47-voices-and-24-languages/
> >
> >
> >     The quality blows away everything I've tried out previously...
> Highly relevant option for voice prompts.
> >
> >     -- Nathan
> >
> >     ------------------------------------------------------------
> >     Nathan Neulinger nneul at mst.edu <mailto:nneul at mst.edu>
> >     Missouri S&T Information Technology    (573) 612-1412
> >     System Administrator - Architect
> >
> >
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> --
> ------------------------------------------------------------
> Nathan Neulinger                       nneul at mst.edu
> Missouri S&T Information Technology    (573) 612-1412
> System Administrator - Architect
>
> _________________________________________________________________________
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>
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