Delayed Auditory Feedback (DAF) Online

Waiting to connect to microphone

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🎙️ Click "Start DAF" to select your microphone

Tip: This tool works best with headphones.

Privacy Notice: All audio processing is performed locally in your browser. No audio data is sent to any server.

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What is Delayed Auditory Feedback (DAF)?

Delayed Auditory Feedback (DAF) is a scientifically backed method used in speech therapy that plays a speaker’s voice back with a short delay. It has been shown to improve speech fluency in people who stutter by slowing down speech and increasing self-awareness.

Our DAF Online Tool lets you experience this technique instantly in your browser, with no downloads or installations required. It’s ideal for individuals seeking accessible, real-time support for their speech challenges.

How DAF Works

When you speak, your brain expects to hear your voice immediately. DAF introduces a delay (e.g., 20–200 milliseconds), which disrupts the feedback loop and causes the speaker to unconsciously slow down or modify their speech pattern. This can reduce disfluency, especially in individuals with stuttering or speech apraxia.

Key Benefits of Using DAF Online

Tips for Best Results

Ready to try? Scroll up to start using the DAF tool now and experience the difference.

What Users Are Saying

“This tool helped me slow down and speak more clearly. I use it before every presentation.”
– Alex R.
“As a speech therapist, I recommend this to clients who need at-home fluency practice.”
– Dr. L. Moreno

Who Can Benefit from DAF?

Frequently Asked Questions (FAQ)

Delayed Auditory Feedback (DAF) is a speech therapy technique that plays a person’s voice back to them with a brief delay, helping individuals who stutter improve their fluency.

Using the Delayed Auditory Feedback (DAF) tool is simple. Follow these steps:

  1. Connect your microphone: Ensure your microphone is enabled and your browser has access to it.
  2. Use headphones: For best results, use wired headphones to prevent audio feedback and delay caused by Bluetooth devices.
  3. Adjust the delay time: Move the delay slider to adjust the feedback delay. Start with a short delay (around 20 ms) and gradually increase as needed.
  4. Adjust microphone gain: Use the microphone boost slider to increase or decrease the sensitivity of your microphone.
  5. Click "Start DAF": Press the button to begin receiving delayed auditory feedback in real time.
  6. Practice speaking: Once activated, speak into the microphone. The delayed feedback will help you manage your speech fluency and reduce stuttering.

You can always adjust the delay time and microphone gain settings to fine-tune your experience.

This tool uses your browser’s microphone to capture your voice, then plays it back with a customizable delay. All processing happens locally on your device for real-time feedback and maximum privacy.

No installation is needed. The DAF tool runs entirely in your browser—just allow microphone access and start using it immediately.

Yes! The DAF Online Tool is completely free with no sign-up, subscription, or hidden fees.

Headphones prevent audio feedback (echo or howling) and ensure the delayed audio is only heard by the speaker—not re-recorded by the mic.

Try DAF Online Now!

Give it a go! Jump to the controls and see how Delayed Auditory Feedback can transform your speech in real time.