| ID | Category [?] | Severity [?] | Reproducibility | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 02622 | Sound | Minor | Always | Nov 3, 2008, 08:34 | Nov 4, 2008, 15:32 |
| Tester | Yonah | View Status | Public | Platform | MAME (Official Binary) |
| Assigned To | Resolution | Open | OS | Windows XP/Vista 32-bit | |
| Status [?] | Acknowledged | Driver | |||
| Version | 0.128 | Fixed in Version | Build | Normal | |
| Fixed in Git Commit | Github Pull Request # | ||||
| Summary | 02622: Various: "Refresh Speed" option induces aliasing distortion. | ||||
| Description | I'm hearing some aliasing distortion on some games when the "Refresh Speed" option is enabled. The most noticeable instance I can find is Fantasy Zone. The sound made after a credit is inserted is noticeably distorted. The effect can also been seen when viewed using a spectrogram. (see attached file) | ||||
| Steps To Reproduce |
-refreshspeed 1 Use 60hz monitor refresh rate. |
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| Additional Information |
In the case of "Fantasy Zone", the distortion became worse with version .128, while some games such as Splatter House (splattej) had been distorted for some time. I believe update 0.127u2 is why Fantazy Zone sounds different: Changed refreshspeed target to 0.25Hz below rate provided, in order to guarantee that inexact timings do not lead to sound stuttering. [Aaron Giles] |
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| Github Commit | |||||
| Flags | |||||
| Regression Version | |||||
| Affected Sets / Systems | Various | ||||
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Attached Files
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 FantzoneCredit.png (14,141 bytes) Nov 3, 2008, 08:34 | ||||
 127.wav (409,068 bytes) Nov 4, 2008, 15:30 | |||||
| 127u2.wav (325,600 bytes) Nov 4, 2008, 15:30 | |||||
 No.02991
Fujix Administrator
Nov 4, 2008, 15:32
edited on: Nov 4, 2008, 15:33
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It seems since 0.127u2. I uploaded two wav clips for comparison. But I don't know if this is a bug or not, because the target rate was dropped by design. |
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