How to Convert Audio Into Formats AI Understands

You’ve found the perfect voicemail. You’ve extracted the audio from the family video. You’re ready to upload it to EchoAgain. But then you see an error message: "File format not supported."

Don't panic. Audio comes in many shapes and sizes (formats), and not all of them play nicely with AI tools. Here is everything you need to know.

The Best Formats for AI

When training an AI voice model, quality is king.

WAV (.wav): The Gold Standard. This is uncompressed audio. It’s large, but it holds all the detail. Use this if you can.
MP3 (.mp3): The Standard. Compressed, but widely used. If you use MP3, make sure it is high quality (at least 192kbps, preferably 320kbps).
M4A (.m4a): Common on iPhones. Most modern AI tools (including EchoAgain) accept this, but WAV is still safer.

Formats to Avoid

WMA: Old Windows format.
OGG: Common on Android, but sometimes unsupported.
AMR: Very low quality, used for old voice recordings. Avoid if possible.

How to Convert Your Files

If your file is in the wrong format, you need to convert it.

On Windows (No Software Needed)

Want to recreate a loved one’s voice?

EchoAgain helps you preserve and reconnect with the voices that matter most.

Try EchoAgain

Windows doesn't have a built-in converter, but you can use an online tool like CloudConvert or download Audacity (free).

On Mac (Built-in)

Open the file in Apple Music (or iTunes).
Go to Music > Settings > Files > Import Settings.
Select "WAV Encoder".
Select your file in the library, then go to File > Convert > Create WAV Version.

Using Online Tools

Websites like Convertio or Online-Audio-Converter are free and easy.

Upload your file.
Select "WAV" as the target format.
Download.

Checking Bitrate and Sample Rate

For the tech-savvy, here are the ideal specs for EchoAgain:

Sample Rate: 44.1kHz or 48kHz.
Bit Depth: 16-bit or 24-bit.
Channels: Mono (1 channel) is often better for voice isolation than Stereo.

Troubleshooting

If your file is the right format but still won't upload:

Check the size: Is it too big? (See our guide on Compressing Audio).
Check the length: Is it too long? Try trimming it to just the speaking parts.

Now that your files are ready, create your account on EchoAgain and start your journey.