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Signal
======

A signal can encode data by repeating a pulse.


1. Triangle pulse

The n-th order triangle pulse is a triangular number followed by its reversion.

Here is the 4th order triangle pulse :

1
2 3
4 5 6
7 8 9 10
9 8 7 6
5 4 3
2 1
0

(1, (2, 3), (4, 5, 6), (7, 8, 9, 10), (9, 8, 7, 6), (5, 4, 3), (2, 1), 0)


2. Gaussian pulse

Each gaussian pulse can be found from the previous one :

    1 0
   1 1 0
  1 2 1 0
 1 3 3 1 0
1 4 6 4 1 0


3. Sine pulse

The sine pulse is the application of the trigonometric function :

sin(time * frequency / sample rate)

Make sure to have a zero at the *end* of the pulse, and 1 at the start
of the pulse.


4. Triple confirmation





Copyright 2023 Thomas de Grivel <thodg@kmx.io>
thodg/txt/unsorted/signal.txt

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