Property SLNoiseStats.TSLNoiseStats.BinMask
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Class: TSLNoiseStats
Contents |
Syntax
Delphi:
property BinMask : TSLBinMask read FBinMask write SetBinMask;
C++ Builder:
__property TSLBinMask * BinMask = { read=FBinMask, write=SetBinMask };
Summary
Array of Count integers holding the values of bins to be masked from statistic calculations.
Description
You can mask (exclude) a bins value from contributing to
noise statistic calculations (SNR, SINAD, etc) by adding the
bins sequential bin number to the BinMask array (using
procedure BinMask.Add). After a bins bin number is added to
the BinMask array, for subsequent statistical calculations,
that bins initial FFT output amplitude is set to the average
of all bins. Often, users have a need to mask bins near the
fundamental frequency bin or near its harmonic bins; because
of this need, the OnBinMaskOpportunity property is provided.
This TSLBinMaskOpportunityEvent is generated after the
fundamental and harmonic bins have been located, and these
locations are supplied as event parameters. The array of bins
to be masked is retained across TSLBinMaskOpportunityEvents
unless bins are explicitly added or the array is cleared;
hence, for efficiency, client code often will not call
procedure BinMask.Add() with each event handler call, but
will keep track of when the mask needs to be cleared or set.
