Music & Audio Advice Music & Audio Advice Mixing and Mastering Fundamentals Questions and Answers 2 — Questions and Answers
Question 1: What is the primary purpose of a high-pass filter during mixing?
- To remove unwanted low-frequency rumble and mud (Correct answer)
- To boost the high frequencies for brightness
- To add distortion to a signal
- To create a stereo widening effect
Correct answer: To remove unwanted low-frequency rumble and mud
A high-pass filter attenuates frequencies below a set cutoff point, cleaning up low-end rumble and muddiness from tracks that don't need bass content.
Question 2: What does the term 'gain staging' refer to in mixing?
- Setting proper signal levels at each point in the audio chain to avoid distortion and noise (Correct answer)
- Increasing the volume of the master bus gradually
- Adding gain to every plugin in a channel strip
- Automating volume changes throughout a song
Correct answer: Setting proper signal levels at each point in the audio chain to avoid distortion and noise
Gain staging is the practice of managing signal levels at every point in the processing chain to maintain headroom and minimize noise or clipping.
Question 3: In mastering, what is the purpose of a limiter on the master bus?
- To set a ceiling that prevents the audio from exceeding a specified peak level (Correct answer)
- To remove all dynamic range from the track
- To add warmth and analog character
- To widen the stereo image of the mix
Correct answer: To set a ceiling that prevents the audio from exceeding a specified peak level
A limiter sets an absolute ceiling for peak levels, preventing digital clipping while allowing the overall loudness to be increased.
Question 4: What is the Fletcher-Munson curve and why is it relevant to mixing?
- It describes how human hearing perceives different frequencies at different volumes (Correct answer)
- It is a standard EQ curve applied during mastering
- It measures the noise floor of a recording studio
- It defines the optimal compression ratio for vocals
Correct answer: It describes how human hearing perceives different frequencies at different volumes
The Fletcher-Munson curve (equal-loudness contour) shows that human ears are less sensitive to low and high frequencies at lower volumes, which affects mixing decisions at different monitoring levels.
Question 5: What is parallel compression and when is it commonly used?
- Blending a heavily compressed signal with the dry original to add punch while preserving dynamics (Correct answer)
- Compressing two tracks with identical settings simultaneously
- Using two compressors in series on the same channel
- Applying sidechain compression from a parallel bus
Correct answer: Blending a heavily compressed signal with the dry original to add punch while preserving dynamics
Parallel compression mixes a heavily compressed copy of a signal with the unprocessed original, adding sustain and density while retaining natural transients and dynamics.
Question 6: What is the recommended LUFS target for streaming platforms like Spotify and Apple Music?
- Around -14 LUFS integrated (Correct answer)
- Around -6 LUFS integrated
- Around -20 LUFS integrated
- Around 0 LUFS integrated
Correct answer: Around -14 LUFS integrated
Most major streaming platforms normalize audio to approximately -14 LUFS integrated, so mastering to that target avoids unwanted volume reduction or pumping artifacts.
Music & Audio Advice Music & Audio Advice Mixing and Mastering Fundamentals Questions and Answers 2
What is the primary purpose of a high-pass filter during mixing?