The Spectrum Analysis tool allows you to examine the fundamental frequency and overtones present in a recording. To display the Spectrum Analysis window, choose Spectrum Analysis from the View menu.

Unlike a Sound Forge data window, which represents audio in the time domain (amplitude vs. time), Spectrum Analysis allows you to examine sound by representing the sound in the frequency domain (amplitude vs. frequency). Data displayed in the frequency domain shows the amplitudes and frequencies of sine waves that, if mixed together, would sound very much like the original sound. Since it’s relatively easy to remember how a sine wave sounds at different frequencies, it’s possible to visualize how simple waveforms sound by looking at the spectrum of the sound.

Spectrum Analysis allows you to perform precise Fast Fourier Transform (FFT) analysis and displays the resulting data in a spectrum graph or a sonogram display. Both formats make it easy to navigate data and read audio frequency and position.

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Spectrum Analysis