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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

Tested at global 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....




Chirp’s software is robust to background noise and has been proven to work seamlessly in the most extreme environments.


Easy to integrate

Chirp is a cross-platform SDK, which provides a fast and easy integration to a host of platform types.


Low Power

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



Chirp’s data-over-sound software is compatible with machines and devices of different platforms, form-factors, and architectures that can process audio.


Works offline

Sound works completely peer-to-peer, or one-to-many, meaning no additional connections are needed to ‘the cloud’ or other network services.


Uses existing hardware

Chirp’s software works with any device that has a pre-existing microphone and speaker, so there’s no need for additional hardware to utilise the solution.




With Chirp’s software solution, there’s no need to think about reengineering as your application grows. Whether the aim is to enable seamless P2P exchanges or send data from one-to-many, Chirp’s software solution is completely scalable.



Because Chirp’s acoustic connection does not require an internet connection and supports industry-standard cryptography, you’ll have peace of mind that any data transferred will not be compromised.



Chirp makes simple, frictionless connections between nearby devices without requiring any set up, pairing, configuration, or the latest hardware or chipset versions.



Chirp is software only, and uses existing hardware - there’s no need for additional hardware to utilise the solution, saving you both money and resources that are better spent on your business operations.

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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