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Chirp and Arm announce white paper on acoustic data transmission

Data-over-sound presents a compelling solution for many device connectivity applications, particularly for use cases that require frictionless, low cost connectivity.

Read the white paper

Proven technology tested at scale.

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Chirp is like an audio QR code.

We send data seamlessly over sound waves to enhance end-user experiences and add value to existing hardware. It uses any existing speaker or microphone, and is configurable to use audible or inaudible near-ultrasonic frequencies.

Chirp is designed for simplicity, eliminating connectivity headaches and simplifying everyday tasks like connecting to Wi-Fi networks, sharing contact details, and making peer-to-peer payments.

Chirp technology is available as a suite of cross-platform enterprise-ready SDKs available to download for free.

Start building with Chirp

Chirp explained in 60 seconds....

Why sound?



Tap to share data with anyone around you, creating a seamless and delightful sharing experience. No pairing or typing needed.



Virtually any device with a microphone or speaker is Chirp-ready, from legacy industrial hardware to modern smart speakers. Send data through any existing audio infrastructure.



Can be used in areas or situations that have no internet, making it a safe and secure method of proximity communication that's COPPA/GDPR-compliant.



Works in the noisiest of environments, from nuclear power stations to the streets of New Delhi. Verified by external lab testers, and proven with background noise exceeding 100dB(A)



Supports industry-standard encryption (AES, RSA, TOTP) for secure authentication and one-to-one messaging.


Low Power

In embedded applications, Chirp's power usage is lower than Bluetooth LE.

Integrate in minutes

Drag, drop and add a few lines of code.

Developer docs

Download SDKs

... and Chirp works with technologies you already use.

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Let your users discover and setup realtime websocket connections with ease.

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Discover and connect with nearby devices to send large data with ease with Google's Firebase.

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Enable Amazon Alexa to speak to devices in the room, without prior setup or pairing

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Find nearby friends and send money with sound using PayPal.

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Use Chirp within your React Native app. Cross-platform data-over-sound made easy.

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