2016-01-20, 17:03
Delta encoding is also simple and no signal is lost 
Example signal from my station:
First row is the raw signal, second row the delta, third row the delta-delta. After the first two samples, 4 bits per sample are enough in this case (not just in this cutout, but in the entire signal). Plus you can still run it through zlib afterwards.
Example signal from my station:
First row is the raw signal, second row the delta, third row the delta-delta. After the first two samples, 4 bits per sample are enough in this case (not just in this cutout, but in the entire signal). Plus you can still run it through zlib afterwards.
Code:
101
98 -3
97 -1 2
96 -1 0
98 2 3
101 3 1
106 5 2
112 6 1
120 8 2
128 8 0
137 9 1
145 8 -1
153 8 0
159 6 -2
163 4 -2
165 2 -2
166 1 -1
166 0 -1
163 -3 -3
160 -3 0
156 -4 -1
151 -5 -1
146 -5 0
140 -6 -1
135 -5 1
130 -5 0
126 -4 1
122 -4 0
118 -4 0
Stations: 233