DJ Audio Effects and Signal Processing 3

Question 1

What is the fundamental difference between a phaser and a flanger audio effect?

Accepted Answer

A phaser uses all-pass filters to shift phase, while a flanger uses a modulated short delay line

Answer

A phaser modulates volume while a flanger modulates pitch

Answer

A flanger adds reverb while a phaser only adds delay

Answer

There is no practical difference between the two effects

Question 2

What does the 'bit crusher' audio effect do to a sound?

Accepted Answer

Reduces bit depth and/or sample rate to create a lo-fi, distorted digital sound

Answer

Compresses audio data to reduce file size

Answer

Increases bit depth for higher audio fidelity

Answer

Encrypts the audio signal for live broadcast

Question 3

Which DJ technique involves using an EQ to simultaneously cut bass on the outgoing track while gradually restoring bass on the incoming track?

Accepted Answer

EQ swap (bass swap)

Answer

Pitch shifting

Answer

Filter sweep

Answer

Sidechain compression

Question 4

What is 'overdrive' when applied as an audio effect in DJ performance?

Accepted Answer

A form of soft, warm distortion that adds harmonic saturation to the audio signal

Answer

Playing a track at a higher BPM than its original tempo

Answer

A loudness maximizer that prevents clipping

Answer

A tempo-synced tremolo effect

Question 5

What does a chorus effect do to an audio signal?

Accepted Answer

Creates multiple slightly detuned and delayed copies of the signal and blends them to produce a richer, fuller sound

Answer

Removes mid-range frequencies to thin out the mix

Answer

Synchronizes the audio signal to an external beat clock

Answer

Creates a rapid stutter or glitch effect

Question 6

What is the purpose of a 'send/return' (FX send) routing configuration on a DJ mixer?

Accepted Answer

To apply effects to selected channels and blend the effected signal back while keeping the dry signal on the main bus

Answer

To split the signal and permanently route one channel to a dedicated effects unit

Answer

To chain multiple DJ decks together in a series signal path

Answer

To route audio directly to an external PA system bypassing the master output

Question 7

In audio effects terminology, what does 'LFO' stand for and what is its role?

Accepted Answer

Low-Frequency Oscillator — a slow wave used to modulate effect parameters like rate, depth, or pitch over time

Answer

Low-Frequency Output — the bass signal sent to a subwoofer

Answer

Linear Filter Operation — the mathematical basis of EQ curves

Answer

Latency Frequency Override — a setting that reduces processing delay