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Day 5: Customize the Welcome Voice for Your EchoKit | The First 30 Days with EchoKit

· 3 min read

(And Today, Your EchoKit Greets You in Your Own Voice!)

By now, you’ve powered up EchoKit, run the server (via Docker or from source), and even customized the boot screen.

Today, we’re taking it one step further: giving your EchoKit a personalized welcome voice.

It’s a simple tweak, but it instantly transforms your device into a Voice AI agent with its own character — a tiny AI companion that greets you the way you like.

Create Your Own Voice​

Your welcome sound can be anything you want:

  • Your own recorded voice
  • A short greeting phrase
  • Even a favorite piece of music

Just make sure your audio file meets these requirements:

  • WAV format
  • 16 kHz sample rate

You can quickly convert audio to 16 kHz using the online tool or FFmpeg:

ffmpeg -i input.mp3 -ar 16000 output.wav

💡 Pro Tip: This is a great opportunity to give your EchoKit a special gift — a voice that makes it uniquely yours!

Set Up Your Custom Welcome Voice​

To apply your custom sound, run your EchoKit Server (Docker or compiled binary).

If your device was previously set up, reset it first:

  • Press the RST button
  • Immediately press the K0 button until the QR code shows

Then, open your config.toml file and look for:

addr = "0.0.0.0:8080"
hello_wav = "hello.wav"

Replace hello.wav with your own file path, for example:

addr = "0.0.0.0:8080"
hello_wav = "my_welcome.wav"

Restart your EchoKit server using Docker or [from the Rust source code]((https://echokit.dev/docs/dev/echokit-30-days-day-3-rust).

Then, connect the echokit server and the device via https://echokit.dev/setup/ page.

If your server URL and Wifi setting didn't change, you can simply restart the device by pressing the rst button.

After that, when you press the K0 button to start a conversation, your EchoKit will greet you with your very own welcome sound. 🎶

Why This Matters​

A custom welcome voice turns EchoKit from a generic device into your personal AI companion. Every interaction feels more natural, more fun, and more expressive — like it really knows you.

Whether it’s a playful hello, a soothing greeting, or a quirky sound effect, this is a special gift you give to yourself and your device.

Want to get your EchoKit Device and make it unique?

Join the EchoKit Discord to share your creative welcome voices and see how others are personalizing their Voice AI agents!