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Donkey Kong on MAME - sound quality not accurate
newmanfamilyvlogs:
--- Quote from: apocalypto on March 30, 2011, 01:07:26 pm ---
--- Quote from: RayB on March 30, 2011, 12:51:57 pm ---you're unfairly comparing the sounds with your examples. a WAV file is uncompressed, while your MP3 is compressed down to a cruddy 64kbs bit rate. Crisp highs are the first thing to suffer with MP3 compression and the lower the quality the more muffled the sound. So... you should be posting an uncompromised WAV file instead.
--- End quote ---
you're right, I didnt realize it only converted the mp3 at 64kps. I have replaced it with a WAV file. However, it sounds pretty similar to the mp3 to be honest.
http://fuelhousedemo.com/dkong-mame.wav
--- End quote ---
Well the spectrum of that file falls off pretty dramatically after around 4.5kHz, so if the sampling rate was around 9kHz, 20kbps would probably be sufficient to capture the entire wave pretty accurately.
boardjunkie:
--- Quote from: CrazyKongFan on March 30, 2011, 11:42:16 am ---There is a separate audio pot on the PCB. I have a cocktail, which has a 4-board stack, one labeled "audio". The pot is on that one, and adjusts either the digital or analog sounds (can't remember which). That being said, mine has a problem where sometimes, it sounds muffled, and sometimes (usually after being in the cold) sounds perfect. I don't think it's the audio board in the 4-board stack, because I have 2 of them and both act the same.
--- End quote ---
That sounds like e-lytics in the analog signal path have gone high ESR.....
Haze:
--- Quote from: ark_ader on March 29, 2011, 10:07:12 am ---
--- Quote from: VanillaGorilla on March 29, 2011, 10:03:35 am ---Honestly, and I don't know how old you are Apocalypto, but the mame audio that is currently in place sounds pretty much like I remember it from back in the day. The one from mikes arcade sounds EQ'd, or of a poor recording quality, and rather shrill to me. I agree that the old DK SAMPLES were much 'brighter', but I never thought they were more 'accurate'. I always remember Donkey Kong sounding like it was inside a shoe box or something, very bass-ey, and very muffled. That machine really rumbled....
--- End quote ---
Yeah the Mamedevs say its 300% accurate. Better than sliced bread.
I like the older versions better with samples, and I do not need a cray to play it.
I'm sure Haze will pop up and say its wonderful and perfect, etc.
But I have played it enough times in the arcade, to tell the difference. ::)
--- End quote ---
You called? All this trolling is unnecessary.
Derrick has said, if somebody provides direct from PCB recordings, and measurements / readings of all the components on that PCB he'll review it. Until then the emulation matches the details / information available.
It's acknowledged that no 2 machines will be the same, some have undergone poor repair jobs, or have the wrong components on from the factory, and the schematics are more often than not _wrong_ but until there is more solid information he can't do anything without simply making potentially widely inaccurate guesses.
So far nobody has come to him with that actual information, so things remain the same. All the people complaining seem to be more hot air than action.
Trolling and just plain insulting the devs for their efforts (which in this area is a considerable effort) is probably only going to make them think the whole thing isn't worthwhile and go and do something else instead, at which point NOBODY will be there to review it even if new information does come to light.
Derrick is doing his job, his further requirements from the community have been laid out plain and clear. Can't say / ask much fairer than that.
CapriRS302:
From what I remember DK always sounded a bit muffled in the arcade, for sure.
Paul Olson:
I sent Derrick a PM on this. Hopefully he still checks the boards after the last fiasco here. I am tied up with school until Mid May, but I will try to get the measurements then. I would like to see this issue put to bed. I have DK, DkJr, and DK3 cabs, so I can check them all.
Paul
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