Rockbox Development > Feature Ideas

Polarity checker

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Datman:
What about a speaker polarity checker like this?
http://www.studiosixdigital.com/speaker_pop.html

soap:
Much like many other requests this one requires full duplex recording during playback.

Some rockbox hardware may support that, but no rockbox software does.

Datman:
Ok... I understand. The solution would be a simple generator like this (cut & paste in FidoCAD http://www.enetsystems.com/~lorenzo/fidocad_win.asp):

[FIDOCAD ]
MC 100 80 0 0 745
MC 100 95 0 0 745
MC 100 110 0 0 745
MC 100 50 0 0 745
MC 100 65 0 0 745
LI 95 50 100 50
MC 75 40 0 0 080
LI 75 40 70 40
LI 85 40 90 40
SA 100 50
SA 100 65
SA 100 80
SA 100 95
LI 100 50 100 110
LI 120 50 120 110
SA 120 65
SA 120 80
SA 120 95
MC 80 30 0 0 080
LI 95 50 95 50
SA 95 50
LI 95 40 95 50
SA 65 50
LI 65 40 65 55
MC 65 55 1 0 170
MC 65 65 0 0 040
MC 70 50 0 0 745
LI 65 50 70 50
LI 70 40 65 40
LI 90 40 95 40
LI 95 50 90 50
MC 65 30 0 0 200
LI 90 30 95 30
LI 95 30 95 40
LI 65 30 65 40
SA 95 40
SA 65 40
TY 85 25 4 3 0 0 0 * 47k
TY 85 35 4 3 0 0 0 * 4M7
TY 65 25 4 3 0 0 0 * 1N4148
TY 65 60 4 3 0 0 0 * 100nF
TY 80 55 4 3 0 0 0 * CD40106B
LI 110 45 110 50
MC 110 115 0 0 040
LI 110 115 110 110
LI 120 80 125 80
LI 135 80 140 80
LI 140 80 140 90
MC 140 85 0 0 970
MC 140 100 0 0 040
TY 150 90 4 3 0 0 0 * 32 Ohm
MC 125 80 1 1 180
TY 130 75 4 3 0 0 0 * 47uF 16V
MC 110 25 3 1 010
MC 110 25 0 0 750
LI 110 40 110 45
SA 110 40
MC 115 40 0 0 170
LI 110 40 115 40
LI 125 40 130 40
MC 130 40 0 0 040
TY 120 35 4 3 0 0 0 * 100nF
TY 110 15 4 3 0 0 0 * 9V
LI 125 65 127 65
LI 127 65 127 60
LI 127 60 128 60
LI 128 60 128 65
LI 128 65 142 65
LI 142 65 142 60
LI 142 60 143 60
LI 143 60 143 65
LI 143 65 157 65
TY 129 60 4 3 0 0 0 * 1%
MC 150 80 0 0 080
LI 140 80 150 80
LI 160 80 170 80
MC 170 90 1 0 080
LI 170 80 170 90
LI 170 100 170 105
MC 170 100 0 0 040
MC 185 100 0 0 040
MC 185 85 0 0 577
LI 180 80 180 85
LI 180 85 190 85
LI 170 80 180 80
LI 185 95 185 100
SA 170 80
TY 155 70 4 3 0 0 0 * 4k7
TY 170 85 4 3 0 0 0 * 220 Ohm
SA 140 80

It's simple to build for an electronics hobbyist.

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