Applying a Frequency Weighting to a Signal

Sound: Analysis and Specification allows you to apply a frequency weighting to temporal signals. There are different perception-related filters to weight a signal: the A/B/C frequency-weighting filters.

Note: By default, all temporal signals are displayed with SPL filter (no filter).

Sound: Analysis and Specification also allows you to display spectral and time frequency signals with a frequency weighting.

Sound: Analysis and Specification uses weighting filters that are compliant with the filter shapes specified in the standard IEC 61672 for A, B and C weightings.

To Apply a Frequency Weighting to a Signal:

  1. Open a temporal signal.
  2. Click the temporal signal or time-frequency representation.
  3. Click Tools > Filter with Frequency weighting > A / B / C.
  4. If several signals are opened in the same window, select the signal to be filtered in the Signal drop-down button.
  5. Check Add to a new block.
  6. Enter a name for the new block.
  7. Click OK.
  8. Click Play to listen to the weighted signal.

The frequency weighting is applied to a signal.