Layout 193-240.qxd 4/1/2002 8:40 PM Page 206
Analyze Menu - Edit View
Possibly Clipped Samples
This field displays the number of samples which may be clipping (those that reach -32768 or 32767 for 16-bit wave-
forms, for example).
Press the [->] button to have the playbar cursor jump to the first clipped sample. The Waveform Statistics dialog is
automatically closed.
DC Offset
The measure of the DC (?Direct Current? or center of the waveform) is shown here, measured in percent. Positive
values are above the center line (zero volts) and negative values are below.
Minimum RMS Power
This value is the minimum Root Mean Squared amplitude (closer to what the ear hears) of the waveform that is
scanned using a window of the size given below as the RMS Window Width.
Press the [->] button to have the playback cursor jump to the average quietest section of the waveform. The
Waveform Statistics dialog is automatically closed.
Maximum RMS Power
This value is the maximum Root Mean Squared (closer to what the ear hears) amplitude of the waveform that is
scanned using a window of the size given below as the RMS Window Width.
Press the [->] button to have the playback cursor jump to the average loudest section of the waveform. The
Waveform Statistics dialog is automatically closed.
Average RMS Power
This figure represents the average power of the entire selection. This is a good measure of the overall loudness of
the waveform selection.
Total RMS Power
This figure represents the total power of the entire selection given as RMS amplitude.
Actual Bit Depth
The waveform?s bit depth (or ?float? if it uses the full 32-bit float range) is reported here.
Copy Data to Clipboard
Press this button to copy all information displayed in the General tab to the Windows clipboard. You can then paste
this info into a text editor or any other Windows application that supports pasting of text from the clipboard.
Histogram Tab
This section displays a histogram of the RMS amplitude values in the highlighted audio selection. (A histogram is a
bar chart that shows the distribution of frequencies, with heights of the bars representing observed frequencies.)
This can be useful for determining future amplification amounts, dynamics compression amounts, and more.
The graph shows which amplitudes are most common. The x-axis (horizontal) ruler measures the amplitude in dB,
while the y-axis (vertical) ruler measures percentage. The more audio there is at a particular amplitude, the more
the graph will show for that amplitude.
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