Spectrograms Preferences

Spectrograms

You can view any audio track as a Spectrogram instead of a Waveform by selecting one of the Spectral views from the Track Pop-Down Menu. This dialog lets you adjust some of the settings for these spectrograms.

• FFT Size: The size of the Fast Fourier Transform (FFT) affects how much vertical (frequency) detail you see. Larger FFT sizes give you more low frequency resolution and less temporal resolution, and they are slower.

• Grayscale: Select this for gray spectrograms instead of colored ones.

• Window Type: Sets a detail of precisely how the spectrogram is computed. 'Rectangular' is slightly faster than other methods, but introduces some artefacts. All methods give broadly similar results.

• Minimum Frequency: Set this to avoid viewing values below some chosen frequency.
• Maximum Frequency: Set this value anywhere from a couple of hundred hertz to half the sample rate (i.e. 22050 Hz if the sample rate is 44100 Hz). For some applications, such as speech recognition or pitch extraction, very high frequencies are not important (visually), so this allows you to hide these and only focus on the ones you care about.