Temporarily Solution:
https://cloud.google.com/text-to-speech/
Language: English (United States)
Voice Type: WaveNet
Voice Name: en-US-Wavenet-G
Speed: 1.04
Pitch: 2.40
Open Chrome Developer Tools -> Network
Click "Play" button.
In the network tab look for proxy?url= entry.
Copy the contents of the audioContent in the response, without the quotes.
Paste the content into https://www.ipvoid.com/base64-to-mp3/ and save the recording as an mp3 file
This is no real mp3, but an wave file, so we need to convert it to a real wave file:
https://online-audio-converter.com/
Now mix the doorbell-1.mp3 it with an mp3 timeline mixer:
https://www.kapwing.com/studio/editor/sidebar-audio/music
Options:
https://sepia-framework.github.io/
https://mycroft.ai/
https://jasperproject.github.io/
https://rhasspy.readthedocs.io/en/latest/ 89
Equalizer:
https://scribles.net/enabling-equalizer-on-raspberry-pi-using-alsa-equal-plugin/