User Guide

SAMPLE VALUE AT CURSOR
This value represents the instantaneous amplitude at this position.
For 16-bit sound files, the range of values is -32,768 to 32,767. For 8-bit
sound files, the range of values is -128 to 127.
MAXIMUM/MINIMUM POSITION AND SAMPLE VALUE
Maximum and minimum sample values and the location, in samples, where
they occur.
This is useful for determining if any clipping occurs in the sound file. It can
also be used to determine the noise level of a signal for use on the Noise Gate
effect. For example, to find the noise amplitude, run the Statistics function on a
region of noisy silence.
RMS POWER
Root Mean Square of the sample values relative to the RMS value of a maximum-
amplitude square wave (the loudest possible recording).
When used on short intervals, this relates to the volume level of the sound file.
However, if used on a large selection with large volume variation, this value
becomes less meaningful.
In Sound Forge XP, the value of 0 dB corresponds to a maximum amplitude
square, not sine wave. A maximum value sine wave will read at -3.0 dB.
AVERAGE VALUE (DC OFFSET)
This is a sum of all of the sample values in the selected region divided by the
number of samples. If non-zero, this usually indicates that there is a DC offset
in the recording process.
ZERO CROSSINGS
Times per second that the waveform changes from a negative value to a
positive value. This value can be used as a rough estimate of the frequency of
the sound data for very simple waveforms.
REFERENCE
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