SoundConverter for Alexa
If you need to convert any audio file SoundConverter is the quick go-to app. All it does is convert sound from one format to another format. There's no editing capabilities and may crash if you try to convert a very large file.
I was working on transcribing a bunch of Real Audio files so that I could play them on the Alexa. I simply set the desired output format and dragged and dropped the files on the SoundConverter Window and within a minute all the audios were successfully covered to the recommended format.
Amazon's own documentation recommends only has two methods to convert sound files: ffmpeg and Audacity. While you can write up a quick bash script to convert a bunch of files using ffmpeg, it's so much quicker to use SoundConverter.
Alexa SSML Settings
This is the recommended setting to play audio on the Alexa devices when playing it through a skill.
SoundConverter is available on the Apple Store for free. There are other applications that can convert sounds, but this is the quick app to convert a bunch of audio files in a batch mode.
The application is a bit old, and hasn't been updated in a few years - six years to be exact! It still works, it may crash every once in a while, but just restart the App and it just keeps on working.
After converting the sounds, I used Fission to check the audio and Normalize some of the clips.
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