Sonifex Pty Ltd T/A Innes Corporation
12/6 Leighton Pl
Hornsby, NSW 2077, Australia
Phone: +61 2 9987 0499
Fax: +61 2 9987 0599
E-mail:
Website: http://www.innescorp.com.au
9
Auricon 2.2+ Manual
DirectSound and WDM Kernel Streaming
Microsoft's DirectSound and Windows Driver Model (WDM) are designed to work hand in hand
to take full advantage of audio card hardware and provide kernel-mode software emulation of
features not directly supported. Kernel streaming allows audio data to be passed directly
between driver modules resulting in a robust, high performance integrated sound processing
system.
With its WDM driver, the Auricon can play MIDI files and audio CDs in addition to Wave files.
The kernel mixer allows multiple sounds from the same or different applications to be played
simultaneously, while the kernel splitter (not available on Windows 2000) automatically splits an
input source to multiple applications. Sampling rate conversion is automatically inserted if any of
the multiple playback or recording streams have different sampling rates.
Note: To use direct CD playback, you need to enable this by going to
Settings - Control Panel
- Multimedia - CD Music
and then clicking on the
Enable Digital CD Audio
checkbox (this is
enabled by default in Windows 8, 7, Vista, Server 2012, Server 2008-R2, Server 2008, XP and
Server 2003). Not all CD-ROM drives support digital audio playback. On Windows XP and
Server 2003 there is also an option to enable error correction and this should be turned on for
best results.
WaveRT on Windows 8, 7, Vista and Server 2012, 2008-R2 and 2008
The Auricon 2.2+ uses the WaveRT driver model on Windows 8, 7, Vista and corresponding
server versions, giving the card’s PCI controller and digital signal processor direct access to the
audio engine’s buffers and position registers. This allows audio transfers to proceed without any
driver code involvement, eliminating transitions to and from kernel mode and thus improving
efficiency and responsiveness. The card also supports both pull mode (the native mode for
Windows 7 and 8) and push mode.
