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avalanche

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Extracting sound effects
« on: January 09, 2015, 11:43:39 AM »
Because I am crazy, I'm trying to get the sound effects from the ROM.  Here's my highly tedious plan:  Hack the assembly to disable all music, so it isn't playing in the background.  Then trick it into playing sound effect 0, then 1, and so on for all of them, which should take about the rest of my life.  Then find a way to get that recorded or dumped.

The first part is working, I can get it to play each sound effect at will.  But when I try to dump an SPC (from Geiger's) the SPC doesn't seem to play anything.  Even if I wait until the sound effect is part-way through and then dump it, still nothing.  Do any of you audio guys know why this would be?

 :edit:
I think I fixed it.  Using a clean reset instead of loading an emulator save state seems to make it work okay.
« Last Edit: January 09, 2015, 01:48:22 PM by avalanche »
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JCE3000GT

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Re: Extracting sound effects
« Reply #1 on: January 11, 2015, 10:24:53 PM »
I would just use BSNES for the most accurate emulation and also use a good .wav editor to record the sound effects directly.  I'm assuming you are wanting them as .wav or sound files on a computer?  I used the aforementioned method to record Final Fantasy 4, 6, and Chrono Trigger sound effects about 7 years ago. 
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avalanche

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Re: Extracting sound effects
« Reply #2 on: January 12, 2015, 09:30:47 AM »
I was able to get 128 SPC files for all of them. I hacked it so the menu beep sound would increment and play the next sound effect, so I could just press down repeatedly, and awesomely enough geiger's command to dump an SPC could be run first and delayed until the sound started. So they are all perfectly at the start of the sound, which is something I really wanted. If I tried to use an external audio recording program, then I would have to edit all the files to try to clip it as close to the start as possible. I figured that would be way too much work and I'd probably cut off some of the beginning or leave an 1/8th of a second silence that would ruin the timing when played back..

Of course I have to do something with all these spcs, but that is another story.  Converting the music with foobar sounded decent enough to me so I will probably try that.
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Grimoire LD

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Re: Extracting sound effects
« Reply #3 on: January 13, 2015, 11:46:03 AM »
Hmm, anything unused in there that you didn't recognize from the game proper?
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avalanche

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Re: Extracting sound effects
« Reply #4 on: January 13, 2015, 12:06:02 PM »
Couldn't really say. I was sort of in the zone with a repetitive task and not paying much attention.
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