Wavelength

Audio networking! Wavelength provides transfer speeds of 1000bps, packets have cool sine waveforms, and it's written in python! What are you waiting for?!

###Usage python3 decoder.py file.wav

###Notes

• Reads 16bit WAV files
• Data in 2 bit chunks
• Frequency decided by: 2³⁺ⁿ. N_min = 0, N_max = 3
• Chunks last 1ms
• 00 = >5400
• 01 = >5000<5400
• 10 = >4000<5000
• 11 = <4000
• Create a sine wave going from 2³⁺ⁿ to 2³⁺ⁿ*100, (e.g. 8Hz to 800Hz), they will average out to give the above chunks.
• This is easiest created using the chirp function in audacity
• Use a amplitude of 0.1 and 1.8

###Units

• Bit = 1 binary digit
• Chunk = 2 consecutive bits (2 binary digits)
• Block = 4 consecutive chunks (8 bits, 8 binary digits)