Data over audio for Windows .NET

James Nesfield
Aug 3, 2018 · 2 min read

Data over sound is a flexible technology because it spans not just device form-factors and platforms, but also device generations. We work hard to make sure that we provide developer-friendly native SDKs for a wide range of platforms.

Starting with our iOS and Android SDKs, our suite has grown to support Python, macOS, JavaScript, Linux and prebuilt packages for embedded applications running Arm Mx chipsets, including the Raspberry Pi. Up until now, our Windows offering was limited to Windows 10 Universal Window Platform (UWP) applications.

We are happy to announce today that we have released .NET compatible assemblies which extend support back to Windows 7 SP1 to our beta users. .NET framework /C# assemblies have often been requested by our larger corporate customers due to their clients’ support of legacy systems. Chirp’s data over sound technology can now be used to bridge devices new and old — the only requirements are a loudspeaker and/or a microphone.

Getting started with this framework is as straightforward as with our other SDKs: Set your credentials, set your callbacks and start!

// Create instance
chirpConnect = new ChirpConnectNet.ChirpConnect(

// Set your licence
ChirpError err = chirpConnect.SetLicence("YOUR_CHIRP_LICENCE");
// Wire up information events
chirpConnect.Sent += ChirpConnect_Sent;
chirpConnect.Sending += ChirpConnect_Sending;
chirpConnect.Receiving += ChirpConnect_Receiving;
chirpConnect.Received += ChirpConnect_Received;
// Start the instance
var startErr = chirpConnect.Start();

We are proud to support a wide range of ultrasonic and audible data over audio technologies, and will continue to ensure that any device capable of making sound can also send data.

Our .NET data over sound SDK can be downloaded now from Each product sends data using audible sound by default, but each is also easily configurable by the developer for ultrasonic data transfer. Like all our SDKs, they are available to use for free for students, startups, academics and charities.

We look forward to seeing what you build — together we will teach the machines to sing!

Chirp is a wireless communication technology that enables data to be transferred via sound, using a device’s existing speaker and microphone. It can use audible or inaudible ultrasonic frequencies, works in the most challenging acoustic environments, and requires no network connection. To learn more about the benefits of data-over-sound, visit


Thanks to Daniel Jones

James Nesfield

Written by



Written by the team at Chirp, the world's most trusted data-over-sound technology used by the leading brands in over 90 countries. Find out more at

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