M-AUDIO Delta TDIF - Manual (Page 25)

CODEC SAMPLE RATE: This section indicates the present board sample
rate, as set by application software. The sample rate selected here will be
used to drive the digital mixer and all outputs. The "Rate Locked"
checkbox is used to force a sample rate upon the system. It is disabled by
default to allow software access to all supported sample rates. When
checked, it causes the driver to only operate at the selected sample rate.
This means that any application that attempts to open the Delta TDIF
driver at a sample rate other than the one selected here will fail to do so
and will post an error message. "Reset Rate When Idle" is selected when
you want the sample rate to return to a particular setting when a software
application is not actively using the board. This is particularly handy for
keeping the digital mixer running at a specific sample rate.
NOTE: Because the digital monitor mixer runs at the sample rate
of the rest of the board, and because sample rate directly affects
frequency response, it may be desirable to keep the sample rate at
or above 44.1 kHz while using the monitor mixer. This is
accomplished by enabling "Reset Rate When Idle" and selecting a
sample rate of 44.1 kHz or greater.
S/PDIF SAMPLE RATE: When using S/PDIF In as your master clock,
this section tells the driver what the expected S/PDIF input sample rate
is. The section is only displayed when the board is set to use S/PDIF In
as the master clock source. From the list, select the sample rate closest to
that of the S/PDIF input data. The sample rate selected here will be the
only sample rate available to the software applications. Therefore, you
must set your audio software application to this same sample rate or else
the application will display an error message.
NOTE: When S/PDIF In is the master clock source, the digital
monitor mixer will run at the sample rate received at the S/PDIF In.
Since frequency response and sample rate are directly related, the
mixer frequency response will be directly related to the sample rate
of the S/PDIF input data.
TDIF Clk SAMPLE RATE: When using TDIF Clk as your master clock,
this section tells the driver what the expected TDIF Clk sample rate is.
The section is only displayed when the board is set to use TDIF In as the
master clock source. From the list, select the sample rate closest to that of
the incoming word clock. The sample rate selected here will be the only
sample rate available to the software applications. Therefore, you must
set your audio software application to this same sample rate or else the
application will display an error message.
NOTE: When TDIF In is the master clock source, the digital monitor
mixer will run at the sample rate received at the TDIF in. Since
frequency response and sample rate are directly related, the mixer
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