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Sound Level Meter Channel (L.In, R.In, L.Out, R.Out)

Controls: Options >> Sound Level Meter >> L.In-R.Out
Macro: SPLch

These four radio pushbuttons select the channel to be measured.

The Input line that has been selected for each Input channel must have been previously calibrated, as described in the Sound Level Meter overview.

You may also select an Output channel to directly display the SPL produced by a calibrated speaker or other transducer under specific test conditions (fixed distance and orientation, for example).

Macro Notes:

Use SPLch=LI to select Left Input, RI for Right Input, LO for Left Output, and RO for Right Output. Alternatively, you can use numeric values, variables, or expressions instead of mnemonic names:

    0 = LI
    1 = RI
    2 = LO
    3 = RO

Note that if you use a mnemonic in an {\b IF} test, it must be in quotes: IF.SPLch="LI".

Note that the Sound Level Meter only allows you to set channels that are currently active, and shows any others as disabled (grayed out). If you attempt to select a channel that is inactive, the macro will abort with an error message indicating that the control is disabled. However, if you set an inactive channel before opening the Sound Level Meter, the command may be accepted at that time (since the meter has not yet disabled the button). That channel will be superceded by an active channel when the meter is later opened.

See also Sound Level Meter


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