CASE
| DESCRIPTION
| OS
|
22
| MIDI latency has been improved.
| XP/Vista/Win7
|
277, 1009
| MIDI data throughput has been improved.
| XP/Vista/Win7
|
368, 827, 962, 1000
| The driver's streaming engine has been rewritten to improve performance, stability, and reduce latency. It is optimized to work on both Microsoft's new and legacy 1394 OHCI bus drivers. ASIO performance when using small buffer sizes is vastly improved.
| XP/Vista/Win7
|
412
| The driver's ASIO interface has been refactored to improve performance and compatibility with ASIO host applications.
| XP/Vista/Win7
|
455
| The driver's handling of DPC delays has been greatly improved. The driver will also no longer send a kASIOResetRequest event to ASIO host applications when a streaming discontinuity occurs due to a DPC delay.
| XP/Vista/Win7
|
705, 739, 806
| Added support for Dynamic Format Change on Windows 7. The sample rate used by WDM audio will now follow the sample rate set in the Control Panel.
| XP/Vista/Win7
|
714
| MIDI output is now more accurately aligned with the audio.
| XP/Vista/Win7
|
744
| The driver's ASIO interface now supports buffer sizes starting at 32, 64, or 128 (depending on the current sample rate) and increasing by a power-of-two.
| XP/Vista/Win7
|
777
| On Windows 7, the WDM audio input's gain was too sensitive and could cause clipping.
| Win7
|
794
| The driver's new streaming engine avoids almost all of the performance issues that are present in Microsoft's new 1394 OHCI bus driver in Windows 7.
| Win7
|
805
| A rare BSOD could occur when a system would wake from sleep.
| XP/Vista/Win7
|
815
| The driver could stop responding after switching to 176.2kHz or 192kHz.
| XP
|
833
| The driver would incorrectly take a second longer to initially start streaming when a device was first connected.
| XP/Vista/Win7
|
838, 867, 910, 919, 921, 935
| The WDM audio driver has been rewritten to use a new Windows streaming model in order to improve performance and to take advantage of newer features.
| XP/Vista/Win7
|
857
| A rare BSOD could occur when a device was attached.
| XP/Vista/Win7
|
920
| A WDM output's audio could become silent when the Front L or Front R channel was remapped to another channel.
| XP/Vista/Win7
|
931, 938
| A WDM input or output audio channel could become distorted after a change to the channel's mapping.
| XP/Vista/Win7
|
934
| Fixed a minor memory leak in the MIDI driver.
| XP/Vista/Win7
|
940
| The WDM audio input can now be configured as either a mono or stereo source.
| XP/Vista/Win7
|
990
| The performance of the WDM audio driver has been optimized.
| XP/Vista/Win7
|
999
| The ASIO driver could be delayed up to 8 seconds in starting up.
| XP/Vista/Win7
|
1007
| Support for AC3 audio was not fully implemented.
| XP/Vista/Win7
|
1008
| The Operation Mode settings have been renamed. On both platforms there are four modes available: Low Latency, Normal, and Safe Mode Levels 1 to 2.
| Old Setting[size=+0] | New Setting | | Normal | Low Latency | | Safe Mode Level 1 | Normal[size=+0] | | Safe Mode Level 2 | Safe Mode Level 1 | | Safe Mode Level 3 | Safe Mode Level 2 |
On Windows, the Operation Mode setting no longer affects the minimum ASIO buffer size.
| XP/Vista/Win7
|
1013
| The Control Panel could crash if an exception occurred during the initial connection to the driver.
| XP/Vista/Win7
|
1017
| The Control Panel could take up to 50 seconds to launch if an exception occurred during the initial connection to the driver.
| XP/Vista/Win7
|
1019
| The driver's streaming engine would not recover correctly after a large DPC delay (>24ms) resulting in distorted audio.
| XP/Vista/Win7
|
1020
| A BSOD could occur when playing or recording WDM audio.
| XP/Vista/Win7
|
1025
| The driver was not correctly enabling a workaround that decreases CPU usage on Windows 7.
| Win7
|
1029
| The Control Panel's Event Log window is now wider by default, and is now resizable.
| XP/Vista/Win7
|
1033
| The ASIO driver now reports the correct ratio of input latency and output latency.
| XP/Vista/Win7
|
1034
| When using stacked devices, the driver could send invalid packets for a short duration that would cause the slave devices to take longer to lock.
| XP/Vista/Win7
|
1035
| Fixed a minor memory leak in the AC3 encoded audio driver.
| XP/Vista/Win7
|
1038
| The Control Panel's DPC graph could be only partially drawn.
| XP/Vista/Win7
|
1039
| The Control Panel's DPC tab now indicates that it is not available when there is no device attached.
| XP/Vista/Win7
|
1041
| AC3 encoded audio was not being streamed correctly.
| XP/Vista/Win7
|
1042
| The Control Panel's DPC tab was not using the correct DPC delay thresholds when recommending an Operation Mode.
| XP/Vista/Win7
|
1043
| Improved performance when using stacked devices on Windows 7.
| Win7
|
1049
| The Control Panel could crash when moving the mouse wheel over another application's window.
| XP/Vista/Win7
|
1050
| The performance of the driver when using stacked devices has been improved.
| XP/Vista/Win7
|
1053, 1059
| AC3 parameters are now locked when an ASIO or WDM application is using the driver.
| XP/Vista/Win7
|
1054
| A BSOD could occur when detaching a device while an ASIO host application was using it.
| XP
|
1060, 1062
| An ASIO host application's audio could become distorted if it was using a large percentage of CPU time to process its audio.
| XP/Vista/Win7
|
1066
| WDM audio could stutter when paused in some WDM audio applications.
| XP/Vista/Win7
|
1072
| An ASIO host application's audio could become silent after changing the sample rate.
| XP/Vista/Win7
|
