AUD203: FINAL STUDY GUIDE

HEADPHONES

Remember Various TypesHow does noise-cancelling work

Types of EQKnow the differences between Graphic and Parametric

Understand Fixed vs. Variable

Types of CompressionKnow what a Limiter and Brick-wall limiter is

Understand Attack and Release

What is a noise gate?

Reverb ParametersDirect vs. Reflected SoundReverb TimeReverb Types (analog & digital)

Dynamic Range16-bit CD: 96dB

24-bit: 144dB

Know HEADROOM

S/N RATIOSignal to Noise Ratio

Same concept as Dynamic Range

Pink & White NoiseWHITE is ‘Flat’ or ‘Linear’ across the spectrum

PINK has a 3dB drop per octave

DITHERIntentionally adds NOISEIncreases perceived dynamic range

Deals with the LSB (least significant bit)

DISTORTIONCLIPPING: Digital Distortion (hard clipping)

Analog Distortion: Warmth or overdrive

NOISELow-Level hiss and humGenerated by equipment or interference

Different from Distortion

NORMALISINGIncreasing the sound to the maximum level

All sound levels stay the same in relation to one another

PSYCHOACOSTICSSUBJECTIVE HUMAN HEARINGBeat Frequencies: Two very close pitches

MASKING: sounds hiding one another

LAST WEEK’S PROJECTTypes of MicrophonesPolar Patterns and stereo setup

Any issues encountered

LISTENING SECTIONPinpointing FrequenciesFrequency CutoffReverb TypesGain LevelsMP3 CompressionSong Analysis