First post, by James-F
- Rank
- Oldbie
When Sound Blaster Pro switches to stereo mode it halves the sampling rate from 44k.1Hz to 22.05kHz, only certain games use the stereo feature of the SB-Pro.
Some of these games will leave the SB-Pro in stereo mode after you quit the game but the problem is the sampling rate is still halved so other games will not sound right.
To quickly recreate this bug:
1. Enter Duke Nukem 3D setup, Choose SB-Pro 2.0 from Card Type.
2. Continue the setup and make sure you select Stereo:
3. Now the important part that actually creates this bug.
Play the Test Sound.
Exit the setup, save or not save, doesn't matter, the damage is already done, the sampling rate is halved.
All you have to do is play a game like Prince of Persia 1/2, Mortal Kombat 2, Supaplex, or any other game that don't have its own SB driver (not Doom),
you'll hear terrible low sampling rate sound effects, half of what it should be.
To fix this simply do the same but choose Mono in the setup and play Test Sound, now the SB-Pro should be back to normal.
Another fix is to run a more advance game that has it's own sound driver like Doom, Warcraft 1/2 that switches the SB-Pro back to mono.
Tested games that create the bug at exit:
Duke3D, Death Rally, Transport Tycoon, MPXPlayer.
All have to be set as SB-Pro with Stereo in their setup configurations.
I have tested this with ES1688F and YMF719 cards.
EDIT:
This can be recreated in DOSBox so the bug is actually the game not switching the SB-Pro back to Mono at exit.
Further down the thread Jepael created a small "sbpmono.com" program that brings the SB-Pro back to mono mode.
Sound Blaster Pro stereo bug