Spectral Histogram

The spectral histogram shows the distribution of the amplitude levels per frequency component over time. Amplitude levels that occurred more frequently will have a brighter intensity. To show a spectral histogram, please choose the section in the clip editor that you wish to analyze. Then choose Spectral Histogram... from the Analysis menu. The following window appears after the analysis has been completed:

Spectral Histogram analysis settings

You can change different aspects of the analysis by clicking the Settings... button:

The different settings are described below:

• Level scale

Selects how the analyzed levels are scaled.

• Vertical resolution (pixels)

The number of pixels along the vertical axis.

• Horizontal resolution (pixels)

The number of pixels along the horizontal axis.

• Intensity (%)

The brightness of the resulting image in percent.

• Block size (samples)

The duration in samples of the time slices that are used create the spectral histogram (see Time and Frequency Domains for more information).

• Window attenuation (dB)

The attenuation in the analysis window specified in Decibels. Please see Time and Frequency Domains for details.

• Frequency scale

You can choose between different scales for the frequency axis: Linear, logarithmic or Mel scale. The latter is optimized according to our perception of sound.

• Minimum frequency (Hz)

The lowest frequency to show in the spectral histogram.

• Maximum frequency (Hz)

The highest frequency to show in the spectral histogram.

• Minimum level

The minimum level to show in the spectral histogram.

• Maximum level

The maximum level to show in the spectral histogram.

• Color palette

You can choose among different color palettes according to your own liking.