FAQ:VoIP:TTS

Audacity : Mix up or concatenate music and TTS files

• Information:
  • On the Kiosk Selfcare, it is possible to create a TTS file that can be used afterwards in an ACD or IVR feature
  • On the ACD system, you can play a TTS file to present your company, then play a music while waiting in the queue
• Problem:

1. You cannot use a short TTS text as waiting music otherwise your customer will get crazy hearing the same text over and over every 10 seconds

• Problematic: In some specific use case, you would like to merge several TTS or music together

1. Add a background music to your text
2. Add a music after your TTS file
3. Concatenate 2 TTS files to add a message in French, then German, then English

• Solution: Follow the next sections

Install Audacity

• Information: Audacity is a quite simple, free and open source software than can be used to cut,merge,concatenate audio files https://www.audacityteam.org/
• Problematic: You wish to install Audacity
• Solution: Follow procedure below

1. Download audacity from https://www.audacityteam.org/download/
2. Install it on your workstation

Concatenate 2 audio files (TTS or music)

• Problematic: You wish to merge 2 audio files (TTS or music into one)
• Example: You have a TTS file TTS.mp3 and a music Music.mp3 that you wish to concatenate into TTS-Music-Concatenation.wav
• Prerequisites

1. Audacity: You have installed audacity software
2. Music: If you are going to use a music, you need to own the music
3. Files: You need to have the 2 files on your workstation

• Solution: Follow procedure below

1. Open Audacity
2. (Import files): Use menu File / Import / Audio , and import the 2 files at once ( or more if you wish )
3. (Stereo to mono): If you have tracks in Stereo mode, you need to transform them to mono
   1. Select the track (will have yellow around it)
   2. Select menu Tracks / Mix / Mix Stereo Down to Mono
4. (Concatenate Files) Drag and Drop the music after the TTS text ( or the opposite based on your needs)
5. (Delete the old empty track) Delete the old track that is now empty ( cf screenshot ), you will now have only one line
6. (Play) You can now click the play button to hear it
7. (Export Audio): You can now export the audio file into one, using menu File / Export Audio / enter a file name and keep it in WAV / mono / 8 KHz
8. (Upload): You can now upload back the file in the Kiosk to use it

Audacity - Import Files
Stereo to mono	Concatenate Files - Delete the old empty track