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15 March 2024, 10:18
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#1 |
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Registered User
Join Date: May 2017
Location: AmigaLand
Posts: 459
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Vu metre with P61 Player
Hey,
I'd like to code a vu-metre, a simple one, I just need to detect when a note starts. As I'm almost zero at programming sound, is there a way to do it with P61 Player ? I guess yes, but how ? 
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15 March 2024, 10:36
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#2 |
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Registered User
Join Date: May 2017
Location: AmigaLand
Posts: 459
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Ok, just checked in P61 source code, if I'm not mistaken I may use the four _visuctr adresses. If value = 0 then note is just triggered.
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15 March 2024, 19:00
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#3 |
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Moderator
Join Date: Nov 2004
Location: Eksjö / Sweden
Posts: 5,604
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Yes, the example does exactly what you want - in the form of the intensity of color of a scanline per channel.
I don't remember exactly, but I think you can also read the instrument number when a channel triggers. A sample window for an oscilloscope is also prepared as an option - see documentation in the code for how to use it. This could be used for a more advanced VU-meter, by summing the amplitude of the bytes in the window. |
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15 March 2024, 22:36
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#4 |
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Registered User
Join Date: May 2017
Location: AmigaLand
Posts: 459
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Nice, but any link to the example you're talking about ?
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16 March 2024, 14:35
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#6 |
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Registered User
Join Date: May 2017
Location: AmigaLand
Posts: 459
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