Trill

Data transmission using sound waves

Trill is a Unity library for sending and receiving data using sound waves. The idea originally came from Chirp. Initially, a rough version was made for a client of mine but transferred data at a much slower speed. This project was started to make a better version.

API

To use Trill, you mainly have to work with TrillDetector and TrillEmitter

TrillEmitter
Allows you to pass data in the form of a string or byte array. The emitter converts the data into a series of frequencies that can be emitted. Sample usage:

TrillEmitter m_Emitter = TrillEmitter.New();
m_Emitter.EmitString(input);

TrillDetector
Listens for the emitter's sound and when a full message is detected it fires an event with the byte array representing the message.

Sample usage:

TrillDetector d = TrillDetector.New();
d.StartDetecting();
d.OnGetMessage += bytes => {
    // Do something with the bytes received
};

TrillK This class allows the important parameters of the library to be assigned. Default values will suffice most of the time.

Future work

Presently Trill has low data transfer rate (2 bytes/second) and often produces errors in detecting the messages. Error correction algorithms and faster transfer rates are required.

Contact

@github
@www