https://www.vogonswiki.com/api.php?action=feedcontributions&feedformat=atom&user=5u3Vogons Wiki - User contributions [en]2026-04-19T08:38:28ZUser contributionsMediaWiki 1.30.2https://www.vogonswiki.com/index.php?title=Hanging_note_bug&diff=1415Hanging note bug2013-07-01T23:12:34Z<p>5u3: /* Bugged (Type 2 only) */ Added CT2290</p>
<hr />
<div>The so-called ''hanging note bug'' is a hardware bug on certain models of the Creative [[Sound Blaster 16]] and [[Sound Blaster AWE32]] series of sound cards. The bug only occurs when affected cards are utilized for digital sound effects and MIDI music simultaneously, but it happens on any MIDI device regardless if connected to the internal [[Wave Blaster connector]] or externally through the game port.<br />
<br />
Although the bug appeared in a wide range of Creative products, Creative never officially acknowledged its existence.<br />
<br />
== Type 1: Illegitimate hanging notes ==<br />
This variant of the bug manifests itself as "rogue" MIDI notes being generated during MIDI playback. Since these notes are not part of the soundtrack, they are not stopped and hang for a long time. Also, these 'illegitimate' notes tend to be high-pitched, which makes this variant of the bug a rather annoying experience.<br />
<br />
It occurs in the following games:<br />
<br />
==== Games using the ''DMX sound system'' by Paul Radek: ====<br />
*Doom<br />
*Doom2<br />
*Heretic<br />
*Hexen<br />
*Raptor<br />
*Hocus Pocus<br />
<br />
==== [[Wikipedia:Build engine|Build engine]] games ====<br />
*[[Duke Nukem 3D]]<br />
*Blood<br />
*Shadow Warrior (Shareware)<br />
<br />
== Type 2: Legitimate hanging notes ==<br />
This type of the bug has been witnessed in many games, but occurs very rarely. In this case, the hanging notes are part of the soundtrack, but for some reason the "Note off" command is missed. <br />
<br />
== Affected cards ==<br />
Affected are all Sound Blaster models with DSP revisions 4.11, 4.12 and 4.13.<br><br />
Type 1 doesn't occur on cards with a CT1747 bus interface.<br />
<br />
=== Bugged (Type 1 and 2) ===<br />
*CT1740 (DSP >4.05) - SB 16 CSP <br />
*CT1750 (DSP >4.05) - SB 16 Multi-CD CSP<br />
*CT1770 (DSP >4.05) - SB 16 SCSI-2<br />
*CT2260 - SB 16 Multi-CD OEM<br />
*CT2800 - SB 16 Value OEM<br />
*CT2860 - SB 16 Value OEM<br />
*CT2910 - SB 16 Pro<br />
*CT2940 - SB 16 Value PnP OEM<br />
*CT2950 - SB 16 Value PnP OEM<br />
*CT2980 - SB 16 Value PnP<br />
*CT3600 - SB AWE 32 IDE PnP<br />
*CT3990 - SB AWE 32 IDE PnP<br />
<br />
=== Bugged (Type 2 only) ===<br />
*CT2230 - SB 16 Multi-CD CSP<br />
*CT2290 - SB 16 PRO CSP<br />
*CT2760 - SB AWE 32 Multi-CD<br />
*CT3900 - SB AWE 32 IDE<br />
*CT3980 - SB AWE 32 IDE<br />
<br />
=== Bug-free ===<br />
*CT1730 - SB 16<br />
*CT1740 (DSP ≤4.05) - SB 16 CSP<br />
*CT1750 (DSP 4.05) - SB 16 Multi-CD CSP<br />
*CT1770 (DSP 4.05) - SB 16 SCSI-2<br />
*AWE64 cards (DSP 4.16)<br />
<br />
== Cause ==<br />
...?<br />
<br />
== External links ==<br />
*[http://vogons.zetafleet.com/viewtopic.php?t=20849 Related thread on the VOGONS forums]<br />
<br />
[[Category:Sound Cards]]</div>5u3https://www.vogonswiki.com/index.php?title=Hanging_note_bug&diff=1220Hanging note bug2013-04-22T22:00:44Z<p>5u3: /* Type 1: Illegitimate hanging notes */</p>
<hr />
<div>The so-called ''hanging note bug'' is a hardware bug on certain models of the Creative [[Sound Blaster 16]] and [[Sound Blaster AWE32]] series of sound cards. The bug only occurs when affected cards are utilized for digital sound effects and MIDI music simultaneously, but it happens on any MIDI device regardless if connected to the internal [[Wave Blaster connector]] or externally through the game port.<br />
<br />
== Type 1: Illegitimate hanging notes ==<br />
This variant of the bug manifests itself as "rogue" MIDI notes being generated during MIDI playback. Since these notes are not part of the soundtrack, they are not stopped and hang for a long time. Also, these 'illegitimate' notes tend to be high-pitched, which makes this variant of the bug a rather annoying experience.<br />
<br />
It occurs in the following games:<br />
<br />
==== Games using the ''DMX sound system'' by Paul Radek: ====<br />
*Doom<br />
*Doom2<br />
*Heretic<br />
*Hexen<br />
*Raptor<br />
*Hocus Pocus<br />
<br />
==== [[Wikipedia:Build_engine|Build_engine]] games ====<br />
*Duke Nukem 3D<br />
*Blood<br />
*Shadow Warrior (Shareware)<br />
<br />
== Type 2: Legitimate hanging notes ==<br />
This type of the bug has been witnessed in many games, but occurs very rarely. In this case, the hanging notes are part of the soundtrack, but for some reason the "Note off" command is missed. <br />
<br />
== Affected cards ==<br />
Affected are all Sound Blaster models with DSP revisions 4.11, 4.12 and 4.13.<br><br />
Type 1 doesn't occur on cards with a CT1747 bus interface.<br />
<br />
=== Bugged (Type 1 and 2) ===<br />
*CT1740 (DSP >4.05) - SB 16 CSP <br />
*CT1750 (DSP >4.05) - SB 16 Multi-CD CSP<br />
*CT1770 (DSP >4.05) - SB 16 SCSI-2<br />
*CT2260 - SB 16 Multi-CD OEM<br />
*CT2800 - SB 16 Value OEM<br />
*CT2860 - SB 16 Value OEM<br />
*CT2910 - SB 16 Pro<br />
*CT2940 - SB 16 Value PnP OEM<br />
*CT2950 - SB 16 Value PnP OEM<br />
*CT2980 - SB 16 Value PnP<br />
*CT3600 - SB AWE 32 IDE PnP<br />
*CT3990 - SB AWE 32 IDE PnP<br />
<br />
=== Bugged (Type 2 only) ===<br />
*CT2230 - SB 16 Multi-CD CSP<br />
*CT2760 - SB AWE 32 Multi-CD<br />
*CT3900 - SB AWE 32 IDE<br />
*CT3980 - SB AWE 32 IDE<br />
<br />
=== Bug-free ===<br />
*CT1730 - SB 16<br />
*CT1740 (DSP ≤4.05) - SB 16 CSP<br />
*CT1750 (DSP 4.05) - SB 16 Multi-CD CSP<br />
*CT1770 (DSP 4.05) - SB 16 SCSI-2<br />
*AWE64 cards (DSP 4.16)<br />
<br />
== Cause ==<br />
...?<br />
<br />
== External links ==<br />
*[http://vogons.zetafleet.com/viewtopic.php?t=20849 Related thread on the VOGONS forums]<br />
<br />
[[Category:Sound Cards]]</div>5u3https://www.vogonswiki.com/index.php?title=Hanging_note_bug&diff=1219Hanging note bug2013-04-22T21:55:24Z<p>5u3: /* Type 1: Illegitimate hanging notes */</p>
<hr />
<div>The so-called ''hanging note bug'' is a hardware bug on certain models of the Creative [[Sound Blaster 16]] and [[Sound Blaster AWE32]] series of sound cards. The bug only occurs when affected cards are utilized for digital sound effects and MIDI music simultaneously, but it happens on any MIDI device regardless if connected to the internal [[Wave Blaster connector]] or externally through the game port.<br />
<br />
== Type 1: Illegitimate hanging notes ==<br />
This variant of the bug occurs in the following games:<br />
<br />
==== Games which use the ''DMX sound system'' programmed by Paul Radek: ====<br />
*Doom<br />
*Doom2<br />
*Heretic<br />
*Hexen<br />
*Raptor<br />
*Hocus Pocus<br />
<br />
==== [[Wikipedia:Build_engine|Build_engine]] games ====<br />
*Duke Nukem 3D<br />
*Blood<br />
*Shadow Warrior (Shareware)<br />
<br />
The bug manifests itself as "rogue" MIDI notes being generated. Since these notes are not part of the soundtrack, they are not stopped and hang for a long time. Also, these 'illegitimate' notes tend to be high-pitched, which makes this variant of the bug a rather annoying experience.<br />
<br />
== Type 2: Legitimate hanging notes ==<br />
This type of the bug has been witnessed in many games, but occurs very rarely. In this case, the hanging notes are part of the soundtrack, but for some reason the "Note off" command is missed. <br />
<br />
== Affected cards ==<br />
Affected are all Sound Blaster models with DSP revisions 4.11, 4.12 and 4.13.<br><br />
Type 1 doesn't occur on cards with a CT1747 bus interface.<br />
<br />
=== Bugged (Type 1 and 2) ===<br />
*CT1740 (DSP >4.05) - SB 16 CSP <br />
*CT1750 (DSP >4.05) - SB 16 Multi-CD CSP<br />
*CT1770 (DSP >4.05) - SB 16 SCSI-2<br />
*CT2260 - SB 16 Multi-CD OEM<br />
*CT2800 - SB 16 Value OEM<br />
*CT2860 - SB 16 Value OEM<br />
*CT2910 - SB 16 Pro<br />
*CT2940 - SB 16 Value PnP OEM<br />
*CT2950 - SB 16 Value PnP OEM<br />
*CT2980 - SB 16 Value PnP<br />
*CT3600 - SB AWE 32 IDE PnP<br />
*CT3990 - SB AWE 32 IDE PnP<br />
<br />
=== Bugged (Type 2 only) ===<br />
*CT2230 - SB 16 Multi-CD CSP<br />
*CT2760 - SB AWE 32 Multi-CD<br />
*CT3900 - SB AWE 32 IDE<br />
*CT3980 - SB AWE 32 IDE<br />
<br />
=== Bug-free ===<br />
*CT1730 - SB 16<br />
*CT1740 (DSP ≤4.05) - SB 16 CSP<br />
*CT1750 (DSP 4.05) - SB 16 Multi-CD CSP<br />
*CT1770 (DSP 4.05) - SB 16 SCSI-2<br />
*AWE64 cards (DSP 4.16)<br />
<br />
== Cause ==<br />
...?<br />
<br />
== External links ==<br />
*[http://vogons.zetafleet.com/viewtopic.php?t=20849 Related thread on the VOGONS forums]<br />
<br />
[[Category:Sound Cards]]</div>5u3https://www.vogonswiki.com/index.php?title=Talk:Hanging_note_bug&diff=746Talk:Hanging note bug2013-03-05T19:40:02Z<p>5u3: </p>
<hr />
<div>1.) The distinction between the working CT1730/CT1740 cards and those that have the bug has been lost. It's probably better to keep a complete list of cards in this article to have all information in one place.<br>2.) This is the first time I read that AWE64 cards can have the bug too. Did you verify that yourself and if not, do you have a source for that? [[User:D1stortion|D1stortion]] ([[User talk:D1stortion|talk]]) 11:59, 3 March 2013 (EST)<br />
<br />
I don't get why the list of cards known to have / not to have HNB was deleted. The whole inforamtion was confirmed by various users on the forum. [[User:RacoonRider|RacoonRider]] ([[User talk:RacoonRider|talk]]) 00:09, 4 March 2013 (EST)<br />
<br />
Heh... Somehow I knew that removing the list of cards would cause some controversy ;-)<br><br />
OK, here is your list back, this time with less errors, I hope.<br><br />
The thing about AWE64 cards was just an error on my part - it has been removed. [[User:5u3|5u3]] ([[User talk:5u3|talk]]) 11:57, 4 March 2013 (EST)<br />
<br />
Just to clarify, the iMuse/TIE Fighter bugs are of the Type 2 variety? [[User:D1stortion|D1stortion]] ([[User talk:D1stortion|talk]]) 03:36, 6 March 2013 (EST)<br />
<br />
Probably yes. It's easy to detect the distinct squeal of the type 1 bug, but it's much more difficult to catch type 2.<br />
In case of iMuse, I'm not sure how much this is the fault of the sound engine itself. In these games, I've had hanging notes on actual Roland MPU401 hardware... [[User:5u3|5u3]] ([[User talk:5u3|talk]]) 06:40, 6 March 2013 (EST)</div>5u3https://www.vogonswiki.com/index.php?title=Talk:Hanging_note_bug&diff=711Talk:Hanging note bug2013-03-04T00:57:55Z<p>5u3: </p>
<hr />
<div>1.) The distinction between the working CT1730/CT1740 cards and those that have the bug has been lost. It's probably better to keep a complete list of cards in this article to have all information in one place.<br>2.) This is the first time I read that AWE64 cards can have the bug too. Did you verify that yourself and if not, do you have a source for that? [[User:D1stortion|D1stortion]] ([[User talk:D1stortion|talk]]) 11:59, 3 March 2013 (EST)<br />
<br />
I don't get why the list of cards known to have / not to have HNB was deleted. The whole inforamtion was confirmed by various users on the forum. [[User:RacoonRider|RacoonRider]] ([[User talk:RacoonRider|talk]]) 00:09, 4 March 2013 (EST)<br />
<br />
Heh... Somehow I knew that removing the list of cards would cause some controversy ;-)<br><br />
OK, here is your list back, this time with less errors, I hope.<br><br />
The thing about AWE64 cards was just an error on my part - it has been removed. [[User:5u3|5u3]] ([[User talk:5u3|talk]]) 11:57, 4 March 2013 (EST)</div>5u3https://www.vogonswiki.com/index.php?title=Hanging_note_bug&diff=710Hanging note bug2013-03-04T00:53:16Z<p>5u3: /* Affected cards */</p>
<hr />
<div>The so-called ''hanging note bug'' is a hardware bug on certain models of the Creative [[Sound Blaster 16]] and [[Sound Blaster AWE32]] series of sound cards. The bug only occurs when affected cards are utilized for digital sound effects and MIDI music simultaneously, but it happens on any MIDI device regardless if connected to the internal [[Wave Blaster connector]] or externally through the game port.<br />
<br />
== Type 1: Illegitimate hanging notes ==<br />
This variant of the bug happens in games which use the ''DMX sound system'' programmed by Paul Radek:<br />
*Doom<br />
*Doom2<br />
*Heretic<br />
*Hexen<br />
*Raptor<br />
*Hocus Pocus<br />
It manifests itself as MIDI notes being generated randomly. Since these notes are not part of the soundtrack, they are not stopped and hang for a long time. Also, these 'illegitimate' notes tend to be high-pitched, which makes this variant of the bug a rather annoying experience.<br />
<br />
== Type 2: Legitimate hanging notes ==<br />
This type of the bug has been witnessed in many games, but occurs very rarely. In this case, the hanging notes are part of the soundtrack, but for some reason the "Note off" command is missed. <br />
<br />
== Affected cards ==<br />
Affected are all Sound Blaster models with DSP revisions 4.11, 4.12 and 4.13.<br><br />
Type 1 doesn't occur on cards with a CT1747 bus interface.<br />
<br />
=== Bugged (Type 1 and 2) ===<br />
*CT1740 (DSP >4.05) <br />
*CT1750 (DSP >4.05)<br />
*CT1770 (DSP >4.05)<br />
*CT2260<br />
*CT2800<br />
*CT2860<br />
*CT2910<br />
*CT2940<br />
*CT2950<br />
*CT2980<br />
*CT3600<br />
*CT3990<br />
<br />
=== Bugged (Type 2 only) ===<br />
*CT2230<br />
*CT2760<br />
*CT3900<br />
*CT3980<br />
<br />
=== Bug-free ===<br />
*CT1730<br />
*CT1740 (DSP ≤4.05) <br />
*CT1750 (DSP 4.05)<br />
*CT1770 (DSP 4.05)<br />
*AWE64 cards (DSP 4.16)<br />
<br />
== Cause ==<br />
...?<br />
<br />
== External links ==<br />
[http://vogons.zetafleet.com/viewtopic.php?t=20849 Related thread on the VOGONS forums]</div>5u3https://www.vogonswiki.com/index.php?title=Hanging_note_bug&diff=702Hanging note bug2013-03-02T23:46:55Z<p>5u3: Almost complete rewrite.</p>
<hr />
<div>The so-called ''hanging note bug'' is a hardware bug on certain models of the Creative [[Sound Blaster 16]] and [[Sound Blaster AWE32]] series of sound cards. The bug only occurs when affected cards are utilized for digital sound effects and MIDI music simultaneously, but it happens on any MIDI device regardless if connected to the internal [[Wave Blaster connector]] or externally through the game port.<br />
<br />
== Type 1: Illegitimate hanging notes ==<br />
This variant of the bug happens in games which use the ''DMX sound system'' programmed by Paul Radek:<br />
*Doom<br />
*Doom2<br />
*Heretic<br />
*Hexen<br />
*Raptor<br />
*Hocus Pocus<br />
It manifests itself as MIDI notes being generated randomly. Since these notes are not part of the soundtrack, they are not stopped and hang for a long time. Also, these 'illegitimate' notes tend to be high-pitched, which makes this variant of the bug a rather annoying experience.<br />
<br />
== Type 2: Legitimate hanging notes ==<br />
This type of the bug has been witnessed in many games, but occurs very rarely. In this case, the hanging notes are part of the soundtrack, but for some reason the "Note off" command is missed. <br />
<br />
== Affected cards ==<br />
Affected are all Sound Blaster models with DSP revisions 4.11, 4.12 and 4.13.<br />
<br />
Type 1 doesn't occur on cards with a CT1747 bus interface (CT2230, CT2760, CT3900, CT3980).<br />
Type 2 has been reported to happen on cards with DSP 4.16 (AWE64) as well.<br />
<br />
== Cause ==<br />
...?<br />
<br />
== External links ==<br />
[http://vogons.zetafleet.com/viewtopic.php?t=20849 Related thread on the VOGONS forums]</div>5u3https://www.vogonswiki.com/index.php?title=Hanging_note_bug&diff=297Hanging note bug2013-02-19T10:49:26Z<p>5u3: Added info about DSP relevance. Moved some model numbers from "Bug-free" to "Bugged".</p>
<hr />
<div>The so-called ''hanging note bug'' is a bug present on certain models of the [[Creative Sound Blaster]] series. Affected are models with DSP revisions 4.11, 4.12 and 4.13. It can only occur when the card is utilized simultaneously for sound effects and wavetable MIDI music either with external modules or Wave Blaster daughterboards.<br />
<br />
== Cause ==<br />
...?<br />
<br />
== How to find out if a card is affected ==<br />
*Start [[Hexen]] with '''hexen -warp 02'''. You will notice hanging notes almost immediately.<br />
*...?<br />
<br />
== Sound card model numbers ==<br />
=== Bugged ===<br />
*CT1740 (DSP 4.12)<br />
*CT1750<br />
*CT1770<br />
*CT2230<br />
*CT2260<br />
*CT2760<br />
*CT2800<br />
*CT2860<br />
*CT2910<br />
*CT2940<br />
*CT2950<br />
*CT2980<br />
*CT3600<br />
*CT3900<br />
*CT3980<br />
*CT3990<br />
<br />
=== Bug-free ===<br />
*CT1730<br />
*CT1740 (except DSP 4.12)<br />
*All AWE64 cards (DSP 4.16)<br />
<br />
== External links ==<br />
[http://vogons.zetafleet.com/viewtopic.php?t=20849 Related thread on the VOGONS forums]</div>5u3