Quiz #3 Flashcards
Compressor
Applies negative gain at a low ratio above a set threshold
Expander
Applies negative gain determined by a ratio below a set threshold
Limiter
Applies negative gain at a high ratio above a set threshold
Noise Gate
Applies infinite negative gain below a set threshold
Comb filter
Short delays producing a ‘flanging’ sound when swept through a signal
Cutoff frequency of a filter
Defines where on the spectrum, it will act, the slope defines the amount of attenuation over that range
Common parameters of a Compressor
Ratio, Make-up gain, Threshold
Common parameters of an EQ
Q, Shelf, Peak, Parametric
Common parameters of a Reverb
Decay, Diffusion, Dampening, Pre-delay
Sampling higher allows us to
Digitalize higher frequencies
The Nyquist Theorem states that
We must sample twice the rate of the frequencies we wish to reproduce
A higher bit depth allows for
The reproduction of a higher dynamic range
Dithering introduces noise that can
Mask severe aliasing or quantizing noise
Formats
Unlike .WAV or .AIFF files Apple Audio (AAC - Like in your iTunes) is a compressed format or what we would term lossy as opposed to lossless
Granular synthesis
Creation if sounds from assembling many short sounds
Waveshaping is
Creating sounds through using mathematical formulas
Subtractive synthesis is
The process of using filters to shape up the spectra of a complex wave
FM synthesis
Is using one wave to vary the rate of vibration of another
AM synthesis
Is using one wave to vary the magnitude of vibration of another
