Audio Editing Digital Audio Editing 3 — Questions and Answers
Question 1: What is the purpose of a 'noise gate' in audio processing?
- To mute or attenuate audio that falls below a set threshold (Correct answer)
- To increase the loudness of quiet signals
- To remove high-frequency noise from a recording
- To add reverb only to loud signals
Correct answer: To mute or attenuate audio that falls below a set threshold
A noise gate silences audio below a defined threshold level, effectively reducing background noise or bleed between musical phrases.
Question 2: What does 'stereo width' control in an audio mix?
- How spread out or narrow the stereo image of a signal appears (Correct answer)
- The volume balance between left and right channels
- The distance of a sound in a reverb space
- The frequency range of the stereo field
Correct answer: How spread out or narrow the stereo image of a signal appears
Stereo width processing adjusts the perceived spread of audio between the left and right channels, making a mix feel wider or more mono-compatible.
Question 3: Which file format stores audio without any data compression?
- WAV (Correct answer)
- MP3
- AAC
- OGG
Correct answer: WAV
WAV (Waveform Audio File Format) stores uncompressed PCM audio data, making it lossless and preferred in professional audio production.
Question 4: What is 'automation' in a DAW used for?
- Recording changes to parameters like volume or effects over time (Correct answer)
- Automatically fixing timing errors in recordings
- Generating MIDI patterns from audio
- Setting up the signal routing between tracks
Correct answer: Recording changes to parameters like volume or effects over time
Automation records parameter movements—such as fader rides or plugin knob changes—so they play back exactly the same way every time.
Question 5: What does 'phase cancellation' occur when in audio?
- Two similar signals are combined and their waveforms partially or fully cancel each other out (Correct answer)
- A signal exceeds the maximum digital level causing distortion
- A delay effect creates comb filtering in the frequency domain
- A compressor reduces the dynamic range of two signals
Correct answer: Two similar signals are combined and their waveforms partially or fully cancel each other out
Phase cancellation happens when two audio signals with similar content are out of phase with each other, causing certain frequencies to reduce or disappear when summed.
Question 6: In mastering, what is the primary function of a 'limiter'?
- To prevent the output signal from exceeding a set ceiling level (Correct answer)
- To boost the overall loudness without any ceiling
- To reduce the dynamic range by at least 10 dB
- To add harmonic saturation to the stereo bus
Correct answer: To prevent the output signal from exceeding a set ceiling level
A limiter acts as an extreme compressor with a high ratio, preventing any signal from exceeding its ceiling to avoid digital clipping while maximizing perceived loudness.
Question 7: What is a 'send' (or auxiliary send) used for in a DAW mixer?
- Routing a copy of a track's signal to an effects bus or return track (Correct answer)
- Sending audio directly to an external hardware device
- Setting the main output level of a track
- Linking two tracks so they move in volume together
Correct answer: Routing a copy of a track's signal to an effects bus or return track
An aux send routes a parallel copy of the track signal to a shared effects bus, allowing multiple tracks to share one reverb or delay while keeping the original signal intact.
Audio Editing Digital Audio Editing 3
What is the purpose of a 'noise gate' in audio processing?