Locking The Sample Rate; Synchronize Wave Devices - Echo Layla24 Owner's Manual

WDM console – all products

Locking the sample rate

Locking the sample rate can be very important, since Windows will frequently try
to set the hardware to the highest rate it supports. Then, Windows sample rate
converts between that rate and the rate at which you are playing or recording. For
instance, you may be trying to play at 44.1 kHz, but Windows sets the hardware to
96 kHz and converts between the two. This is undesirable because you may be
trying to do a digital transfer at a specific rate. In addition, sample rate conversion
will reduce your audio quality and consume a great deal of CPU power. Locking
the sample rate forces Windows to only use the hardware at the locked rate. In
general, we recommend you set the sample rate first in your audio application.
Then, lock that same rate within the console. Locking the sample rate is not really
necessary for applications that do not use the legacy wave/MME interface (such as
SONAR, Cubase, etc.).

Synchronize wave devices

This is mainly for developers who are using tools like Visual Basic or Delphi and
want the inputs and outputs to be totally independent. Unless you have a good
reason to turn it off, you should leave this switch on. Also, if you are running
multiple applications on one card and you can't get it to work, try un-checking this
box.
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WDM console – all products