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YakYak

YakYak is a utility for the local generation of synthetic voice through use of Wyoming-Piper. It can be used from the command line or called from python. It opens a TCP socket to Wyoming-Piper running in Docker anywhere on your local area network. It scales to run efficiently on large multi-core computers or small single board computers.

Install YakYak, Docker Compose & FFMPEG

To install YakYak, a python virtual environment is recommended.

Step 1, create a python virtual environment and activate it

cd some_directory  
sudo apt install python3.8-venv
python3 -m venv .venv  
source .venv/bin/activate

Step 2, install the YakYak package

pip install yakyak

Step 3, Install ffmpeg

Install ffmpeg for mac

brew install ffmpeg

Install ffmpeg for Ubuntu

sudo apt install ffmpeg

Setup wyoming-piper in docker, on your local area network.

If you don't already have docker, or better yet docker-desktop, you can download and install it from docker.com.

If you don't already have a wyoming-piper docker-compose.yml file, create one using YakYak. Warning, this will overwrite an existing docker-compose.yml file.

yakyak --docker > docker-compose.yml

Now you can start wyoming-piper in a docker container

docker compose up -d --force-recreate

Test installation

It will take a little longer the first time running YakYak, the Wyoming-Piper app needs time to download voice files.

piper -h localhost -t mp3

Observe successful test results

INFO:root:Server localhost:10200 is online
INFO:root:Success, test: mp3

How to use YakYak from the command line

As with many Linux applications, YakYak supports standard in, and standard out. It also supports file input with the -i command and -o for file output. For a complete set of commands type yakyak --help.

yakyak --help

Create an mp3 file with "Hello world"

echo Hello world | yakyak -f mp3 -o hello_world.mp3

If you are on Linux and have aplay installed, you can do this:

echo Hello world | yakyak | aplay

This assumes that Docker is running on the same machine.

If Docker is running on a different machine on your network, you can do this:

echo Hello world | yakyak --host a_different_machine.local | aplay

How to use YakYak from Python

Create the file test_yakyak.py with the following content:

from yakyak import is_server_online, piper_tts_server

print(f"{is_server_online(
        'localhost', 
        10200, 
        )=}")

print(f"{piper_tts_server(
        'localhost', 
        10200, 
        'Hello World',
        'hello_world.mp3',
        'mp3',
        'en_US-amy-medium'
        )=}")

Now test it

python3 test_yakyak.py

Observe that the server is online and a file hello_world.mp3 is created. Play the mp3 and you will hear "Hello world".

run.py 
check_ffmpeg_version()='ffmpeg version 6.0 Copyright (c) 2000-2023 the FFmpeg developers'
is_server_online(
        'localhost', 
        10200, 
        )=True
INFO:root:Server localhost:10200 is online
run_test(
        'localhost', 
        10200, 
        'mp3',
        )=(True, 'Success, test: mp3')
INFO:root:Success, test: mp3
await piper_tts_server(
            'localhost', 
            10200, 
            'Hello World',
            'run_test.mp3',
            'mp3',
            'en_US-amy-medium'
            )=None

Process finished with exit code 0