ok super weird question i got in a rabbit hole of "is this emulator accurate??" earlier today, and wound up getting weirdly focused on Zelda II? If I stand in one place and use the sword a bunch It's like the audio is… ducking, sort of??
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Everything gets quieter, or like slightly low passed, while I'm making the sword noises, and then afterward it ramps back up over like 500-1000 ms I noticed this in two different emulators Am I imagining this??!? Is it my headphones ???!??
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Replying to @mcclure111
This is the exact kind of case where I would just record video/audio of this happening, and pull the audio up in an audio editor to see for myself. And then probably curse my headphones/computer for having a feature that protects my ears from harsh sounds without me knowing!!
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Replying to @Hey_Its_Lollie @mcclure111
I'm curious what it turns out to be. Could it just be the sound channel limit?
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Replying to @AxiomVerge @Hey_Its_Lollie
Maybe I'm imagining it?? One of the emulators had a channel volume mixer; I could turn it down to give it more headroom. On os X I think if you feed overlimit audio to the OS (Coreaudio uses floats) there's some adaptive compression… not sure about that
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Replying to @mcclure111 @Hey_Its_Lollie
That would also make sense... maybe you could test on one of own games. What a weird issue to have to work around though if you want the authentic clipping audio sounds of emulated hardware...
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Replying to @AxiomVerge @Hey_Its_Lollie
mcc Retweeted a tiny faerie
Okay you might find this minithread very interesting! Apparently the actual NES had a particular interaction between the noise and triangle channels:https://twitter.com/atinyfaerie/status/1254055471855665152 …
mcc added,
a tiny faerie @atinyfaerieReplying to @mcclure111The triangle channel will become quiet if the DPCM channel or noise channel are used in certain ways, since they all share a single output channel, and the DAC used to convert the signal to audio does not operate linearly (it will compress signals as volume gets higher).1 reply 0 retweets 3 likes
That *is* pretty cool. And hey, now you know it's not some hidden "protect user ears" setting in the OS.
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