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Results tagged with fsk
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user 47070
Frequency Shift Keying - A digital transmission technique in which a "1" is represented by one frequency and a "0" by another. It is the digital equivalent of FM.
1
vote
Identifying 40Hz frequency shift
10 milliSeconds won't do. A simple FFT at 40kHz with a block size equivalent to 10 milliSeconds will give you a frequency resolution of 100Hz.
50milliSeconds will give you a resolution of 40Hz, whi …
- 73.6k
3
votes
Understanding this circuit for getting sensor data from an arduino to a phone via the headph...
R1 is needed for the android device to recognize that there is something connected to the earphone port.
R3 and R2 are a voltage divider to reduce the signal level from the arduino to a level that th …
- 73.6k