Can you split sound channels and mix them with audio out?

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NotTheCommonDose
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Can you split sound channels and mix them with audio out?

Post by NotTheCommonDose »

I was thinking about this as a new alternative to mute certain channels on my NES using a Game genie but it is not switchable and gets frustrating. Is this possible to do?
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Dwedit
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Post by Dwedit »

Usually, you would use an Emulator to do this thing since they allow you to change the volume of each sound channel individually. The rest of the post is useless hypothetical methods which would work in theory but be very impractical. Just use emulators...

For Game Genie, you would need to reverse-engineer how the game writes to the sound channels. From there, you could do ASM hacks to the game to turn off channels, then convert such hacks into codes. Lots of nasty 6502 hacking there, very time consuming.

Also, it's possible to separate the square waves from the triangle/DMC with soldering and wires.
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No Carrier
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Post by No Carrier »

Dwedit wrote:Also, it's possible to separate the square waves from the triangle/DMC with soldering and wires.
That is what I was going to suggest, and here is one link explaining it:

http://www.raphnet.net/electronique/nes ... mod_en.php
NotTheCommonDose
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Post by NotTheCommonDose »

No Carrier wrote:
Dwedit wrote:Also, it's possible to separate the square waves from the triangle/DMC with soldering and wires.
That is what I was going to suggest, and here is one link explaining it:

http://www.raphnet.net/electronique/nes ... mod_en.php
Since that is the only practical method and it being the only choice I guess I'll try it out, thanks. :)
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commodorejohn
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Post by commodorejohn »

I've never really seen the point behind it, as you don't get any real stereo effects aside from a fixed channel separation, but it's a cool trick, anyway.
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NotTheCommonDose
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Post by NotTheCommonDose »

I'm going to see if there is a way by experimenting to get each sound channel to work with a surround sound system so. In the meantime I will be replacing the red LED light with a yellow one. And the project of stereo separation worked but was a bitch. Spent all night getting it to work.
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