Meters

The meter controls measure data passing through an audio line. These controls use the MIXERCONTROLDETAILS_BOOLEAN, MIXERCONTROLDETAILS_SIGNED, and MIXERCONTROLDETAILS_UNSIGNED structures to retrieve and set control properties. The following table describes the types of meters.

Control
Description


Boolean
Measures whether an integer value is FALSE/OFF (zero) or TRUE/ON (nonzero).
Peak
Measures the deflection from 0 in both the positive and negative directions. The range of integer values for the peak meter is pics/MMEDIA00090000.gif 32,768 through 32,767.
Signed
Measures integer values in the range of pics/MMEDIA00090000.gif 231 through (231 pics/MMEDIA00090000.gif 1). The mixer driver defines the limits of this meter.
Unsigned
Measures integer values in the range of 0 through (232 pics/MMEDIA00090000.gif 1). The mixer driver defines the limits of this meter.

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