Un excelente software para Machintosh que incluye un analizador de espectro de audio muy bueno y encima gratuito, os lo dejo aqui para su descarga.saludos.FOXSTAR.Spectrum Analyzer - Macintosh Audio Spectrum Analyzer
http://dogparksoftware.com/iSpectrum.html
Features...
* Audio spectrum analyzer.
o Spectrum Display.
o Waterfall Frequency Display.
o Oscilloscope View.
* 6 User selectable bandwidth resolutions.
* User selectable center frequency.
* User selectable input gain.
* Works with built-in, system and USB microphones.
* Displayed images can be saved to disk.
* Point-and-click frequency marker.
* Auto centering of marker frequency when switching bandwidth.
* Choice of FFT window functions.
* User selectable sample averaging.
Requirements
* Mac OS X 10.3 and higher.
