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Filters
Band Pass
Allows only the band of frequencies surrounding the cutoff frequency to pass through.
Band Stop
Does the opposite of Band Pass filters, blocks all frequencies within a specified range.
High Pass
Only allows the frequencies higher than the cutoff frequency.
High Shelf Pass
Filters frequencies above a selected frequency.
Low Pass
Permits all frequencies lower than the cutoff frequency through.
Low Shelf Pass
A type of filter in which all frequencies below a selected frequency are affected.
Noise Reduction
Reduces unwanted noises within a sound, such as a background hisses, hums or interference, cannot however be used to separate or remove vocals or voices.
Notch
Often referred to as a "band reject filter", attenuates frequencies closest to the center frequency of a filter setting, used to minimize hum or acoustic feedback.
Pop/Plick
Eliminates abrupt changes in a sound, often used in restoration.
Silence Reduction
Deletes silence from a selected part of an audio file
Smoother
Reduces hiss and crackle, often used when restoring old recordings or LPs.
FFT
Applies Fast Fourier Transform (FFT) filter to a selected part of an audio file, smoothes amplitude transitions at various frequencies, points above zero amplify and filter, points below zero attenuate and filter.
Display Features
Waveform
A graphical representation of an audio file that is a mathematical representation of a wave, obtained by plotting a characteristic of the wave against time.
Spectral
Visual display of a frequency graph, the horizontal axis is frequency in Hertz (Hz) and the vertical axis is magnitude in decibels (dB).
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GLOSSARY
