Appendix E: PureWave and SuperChannel
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Appendix E: PureWave and SuperChannel
What is SuperChannel?
SuperChannel is an Echo-exclusive feature that allows you to customize how the
various inputs and outputs on your Echo hardware are presented to Windows.
When the WDM driver is first installed, the hardware is presented as a list of stereo
inputs and outputs. Take Layla3G, for example: here’s the list of wave devices
that you’d see in the “Sounds and Audio Devices” control panel:
•
Layla3G 1-2 Analog Out
•
Layla3G 3-4 Analog Out
•
Layla3G 5-6 Analog Out
•
Layla3G 7-8 Analog Out
•
Layla3G 1-2 Digital Out
•
Layla3G 3-4 Digital Out
•
Layla3G 5-6 Digital Out
•
Layla3G 7-8 Digital Out
As you can see, there is one wave device for each stereo pair of outputs. Inputs are
presented similarly.
This works well for many audio applications. However, there are some cases
where you don’t want a bunch of discrete stereo pairs; you want to be able to group
multiple channels together into a single wave device.
Say you want to do 5.1 surround sound playback from a DVD; to do this, you need
a single six-channel wave device. For instance, you could set up your wave-out
devices like this:
•
Layla3G 1-6 Analog Out
•
Layla3G 7-8 Analog Out
•
Layla3G 1-8 Digital Out
