Electroacoustics Toolbox
The gold standard in Mac-based acoustical testing and measurement.

Octave Band Analyzer

Need to see your signal's spectrum in true fractional octave bands?  FEaT enables real-time CPB (constant percentage band) spectral analysis with its Octave Analyzer.

Select either whole octave or third octave spectral analysis, and FEaT computes the spectrum with digital Butterworth filters, as recommended by ANSI standards.  The spectral values are determined using the standard time weightings employed by sound level meters, and you can even measure calibrated sound levels in octave or third octave bands.

Use the dual cursors to precisely measure time-weighted or equivalent signal levels (including current, peak, and max values) at any frequency, or measure the difference in signal levels between two frequencies.

 

  • Features whole and 1/3-octave real-time spectral analysis using digital Butterworth bandpass filters, as recommended by ANSI Standards
  • Supports calibrated sound level measurements in whole and 1/3-octave bands, including Lp, Lp_max, Lp_peak, and Leq
  • Flat, A, and C frequency weighting
  • Fast and Slow time weighting
  • Supports non-acoustic signals with units other than Pascals
  • Captures current spectrum for later review