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MasterSytem sound discrepancies

#1 User is offline Epsilonsama 

Posted 13 March 2009 - 09:48 PM

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Recently I bought a MasterSytem, the first batch of it, the one with the puzzle.
I notice something quite amusing, the music of shinobi, great game btw, has a higher pitch than the one in most emulators, specifically SMS plus wii and Kega also, does someone know why is this?
Also, I like how the real hardware sounds, I always tough master system music was dull until now.
This post has been edited by Epsilonsama: 13 March 2009 - 09:54 PM

#2 User is offline AamirM 

Posted 14 March 2009 - 08:20 AM

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Shinobi is a game that can use the onboard FM chip (YM2413) present on some Japanese SMS. Maybe that is getting enabled in the emulators. Pretty much every emulator has the option to disable that though.

Another option would be to try and run it in Regen. Turn on "SuperHQ". And make sure that "Enable YM2413" option (in System->Master System) is unchecked.

#3 User is offline Epsilonsama 

Posted 14 March 2009 - 06:54 PM

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View PostAamirM, on Mar 14 2009, 09:20 AM, said:

Shinobi is a game that can use the onboard FM chip (YM2413) present on some Japanese SMS. Maybe that is getting enabled in the emulators. Pretty much every emulator has the option to disable that though.

Another option would be to try and run it in Regen. Turn on "SuperHQ". And make sure that "Enable YM2413" option (in System->Master System) is unchecked.


I will check that, still it seems that without that chip the music sounds better, at least for me, is more upbeat and louder.

#4 User is offline Ollie 

Posted 14 March 2009 - 07:05 PM

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It might also be your TV that is making the sound appear to be different. ;)

#5 User is offline Epsilonsama 

Posted 14 March 2009 - 08:51 PM

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View PostOllie, on Mar 14 2009, 08:05 PM, said:

It might also be your TV that is making the sound appear to be different. ;)


nope, checked with the smsplus wii, I connected both using a mono audio connection, using composite cables.

View PostAamirM, on Mar 14 2009, 09:20 AM, said:

Shinobi is a game that can use the onboard FM chip (YM2413) present on some Japanese SMS. Maybe that is getting enabled in the emulators. Pretty much every emulator has the option to disable that though.

Another option would be to try and run it in Regen. Turn on "SuperHQ". And make sure that "Enable YM2413" option (in System->Master System) is unchecked.


Checked this option with regen and it was this, wow im I the only one that likes how MS games sound without the YM2413.

EDIT:
It seems Sonic 2 sound like shit with this off, so it seems some games do need it.
This post has been edited by Epsilonsama: 14 March 2009 - 09:16 PM

#6 User is offline GerbilSoft 

Posted 16 March 2009 - 02:23 PM

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View PostEpsilonsama, on Mar 14 2009, 09:51 PM, said:

Checked this option with regen and it was this, wow im I the only one that likes how MS games sound without the YM2413.

EDIT:
It seems Sonic 2 sound like shit with this off, so it seems some games do need it.

Sonic 2 doesn't use the YM2413, so the fact that it makes a difference indicates that something's wrong with the emulator.

#7 User is offline AamirM 

Posted 17 March 2009 - 05:32 AM

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Quote

It seems Sonic 2 sound like shit with this off, so it seems some games do need it.

Actaully, it should be sounding more accurate with YM2413 disabled :P .

With YM2413 enabled, everything is run at 49-ish KHz (original frequency of YM2413) and resampled to 44100.

With YM2413 disabled, PSG is oversampled 8x and resampled back 44100. This is more closer to the frequncy of PSG (which I think was 220 ish KHz).

I am talking about Regen only. Fusion doesn't have this shortcoming AFAIK.

P.S:
I can't remember the exact frequencies off the top of my head.
This post has been edited by AamirM: 17 March 2009 - 05:34 AM

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