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d18c7db / Gauntlet_FPGA

FPGA implementation of Atari's Gauntlet arcade game
GNU General Public License v3.0
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Audio is too high pitched #2

Closed rhester72 closed 4 years ago

rhester72 commented 4 years ago

On MiSTer (can't speak for other targets), all audio (including voice) sounds about one octave too high.

I'm not sure if it's related, but the sound of f.e. ghosts hitting warrior on level one sounds like popping bubbles...not sure how else to describe it. =)

dfilskov commented 4 years ago

I'm using the core from August 12th - doesn't the audio sound right?

Gauntlet_Aug_15_2020-mp3.zip

rhester72 commented 4 years ago

Nope...those are definitely pitched too high.

See gameplay from the end of this video (starting around the 1h15m mark):

https://www.youtube.com/watch?v=OmkI4Kalckw

d18c7db commented 4 years ago

First off you guys are comparing against a YouTube video of MAME gameplay in an echoey room, not a real arcade. Secondly if you want a better comparison set both MAME and MiSTer game in system test mode, go to sound test and compare each individual sound against each other. There are three different sound sources, the YM2151 the Pokey and the TMS5220. Do all of them sound wrong or just some?

When I get home from holiday I can investigate myself.

On 15/08/2020, at 09:31, dfilskov notifications@github.com<mailto:notifications@github.com> wrote:

OK, I'll get back with a comparison :)

It's not an octave higher, though, since that's the double tempo / twice the frequency - it's much less.

I'll check what the difference is more precisely.

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dfilskov commented 4 years ago

Sounds great, Alex! - thanks a lot!

I've done a comparison to this video now: https://www.youtube.com/watch?v=svzYT6qN7cE - The FM (but not the voice) seems to be exactly one octave too high. When I pitch down e.g. the coin sounds (tubular bells like) one octave (= 12 notes) they match perfectly with the original from the video.

I've made an MP3 where I alternate between first the MiSTer - which sounds a bit thin and high-pitched - and then the original - lower/more deep and "scary" - back and forth :) - also I've included the coin sounds ... and after those I've pitched down the MiSTer recordings so that you can hear that they actually end up matching the original from the video (both the coin sounds and the main theme sounds correct when pitched down to half the frequency).

FM_should_be_half_the_frequency.zip

d18c7db commented 4 years ago

I saw what the problem was, confusing multiple clock enables on the jt51 core, should be fixed now.

rhester72 commented 4 years ago

Perfect, thank you very much!