User manual

320
Audio processing and functions
The Spectrum Analyzer
The default values give good results in most situations, but you can adjust the settings
if you like:
3. Click the Process button.
The spectrum is computed and displayed as a graph.
4. You can adjust the display with the settings in the display window:
Option Description
Size in Samples The function divides the audio into “analysis blocks”, the size of
which is set here. The larger this value, the higher the frequency
resolution of the resulting spectrum.
Size of Overlap The overlap between each analysis block.
Window used Allows you to select which window type is used for the FFT (Fast
Fourier Transform, the mathematical method used for computing
the spectrum).
Normalized Values When this is activated, the resulting level values are scaled, so that
the highest level is displayed as “1” (0
dB).
From Stereo When analyzing stereo material, there is a pop-up menu with the
following options:
Mono mix – the stereo signal is mixed to mono before analyzing.
Mono left/right – the left or right channel signal is used for analysis.
Stereo – both channels are analyzed (two separate spectrums will
be displayed).
Setting Description
dB When this is activated, the vertical axis shows dB values. When it is
deactivated, values between 0 and 1 are shown.
Freq. log When this is activated, frequencies (on the horizontal axis) are displayed
on a logarithmic scale. When it is deactivated, the frequency axis is linear.
Precision Indicates the frequency resolution of the graph. This value cannot be
changed here, but is governed by the Size in Samples setting in the
previous dialog.
Frequency/
Note
Allows you to select whether you want the frequencies to be displayed in
Hertz or with note names.
Min. Sets the lowest frequency shown in the graph.