Spectrograms Preferences

Spectrograms

You can view any audio track as a Spectrogram instead of a Waveform by selecting either Spectrum or Pitch (EAC) from the Track Pop-Down Menu. This preference dialog lets you adjust some of the settings for these two spectrogram views.

• 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 are slower.
• Window type: Determines precisely how the spectrogram is computed. 'Rectangular' is slightly faster than other methods, but introduces some artefacts. All methods give broadly similar results.

• Grayscale: Select this for gray spectrograms instead of colored ones.
• Minimum Frequency: Set this to avoid viewing values below some chosen frequency.
• Maximum Frequency: You can set this value anywhere between 200 Hz and half the current sample rate of the track (for example, 22050 Hz if its 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 important ones.