Viewing Issue Advanced Details
ID Category [?] Severity [?] Reproducibility Date Submitted Last Update
05737 Sound Minor Always Oct 17, 2014, 00:34 24 days ago
Tester zaxxon View Status Public Platform MAMEUI
Assigned To hap Resolution Fixed OS Windows Vista/7 (32-bit)
Status [?] Resolved Driver
Version 0.155 Fixed in Version 0.272 Build Normal
Fixed in Git Commit 607153c Github Pull Request #
Summary 05737: choplift and clones: digitized speech is pitched too high
Description hi, for the game choplifter (8751 315-5151) (note: i cannot test the clones for this game), the digitized speech is pitched too high in mame.

listen to the two attached .wav recordings comparing the pcb version against the mame version.

here is a video of the choplifter pcb where you can hear the digitized speech:
Steps To Reproduce
Additional Information
Github Commit
Flags
Regression Version
Affected Sets / Systems choplift and clones
Attached Files
wav file icon pcb_choplifter.wav (1,653,718 bytes) Oct 17, 2014, 00:34 Uploaded by zaxxon
.wav sound file of choplifter pcb version
wav file icon mame_choplifter.wav (1,982,214 bytes) Oct 17, 2014, 00:36 Uploaded by zaxxon
.wav sound file of choplifter mame version
Relationships
related to 07869Resolvedhap  choplift: Game graphics pause on any digitized speech. 
Notes
5
User avatar
No.11094
B2K24
Senior Tester
Oct 17, 2014, 05:34
The bootleg and unprotected set seem to sound identical as the Parent (choplift)

These sets give you warnings about "NO GOOD DUMP KNOWN" and "ROM NEEDS REDUMP"

With that said, it definitely seems like the reported behavior can be confirmed.
User avatar
No.11278
zaxxon
Tester
Dec 4, 2014, 16:12
an added note for this report:
in order for the mame speech to match the arcade speech in pitch/speed,
the pitch/speed of the speech in mame would need to be reduced by 25%
User avatar
No.11291
darq
Tester
Dec 11, 2014, 17:00
This problem should be related to the SN76489 sound slices.

I don't know how to fix it in MAME (and whether or not is it possible with current implementation), but if you increase the sound
slices (I tried for example from 256 to 280 slices per frame), you will get the correct pitches.
User avatar
No.22418
Augusto
Tester
24 days ago
The game run without demo music in both sets.
User avatar
No.22420
hap
Developer
24 days ago
Yes, during attract mode it has a sfx on the titlescreen and nothing else, that's just how the game is.