Remixing & Mashups Stem Separation & Audio Editing Techniques 2

Question 1

What is iZotope RX primarily used for when preparing stems for a remix?

Accepted Answer

Audio repair, noise reduction, and spectral editing

Answer

iZotope RX is an industry-standard audio repair suite used to clean stems by removing noise, clicks, hum, reverb, and AI separation artifacts.

Question 2

Which subscription-based stem separation platform is known for high-quality output with minimal AI artifacts?

Accepted Answer

LALAL.AI

Answer

LALAL.AI is a paid subscription service that uses advanced neural networks to produce cleaner stem separations with fewer artifacts than free alternatives.

Question 3

What is 'spectral editing' in audio production?

Accepted Answer

Editing audio by directly manipulating individual frequencies in a spectrogram view

Answer

Spectral editing involves visually identifying and manipulating specific frequencies in a spectrogram display, allowing precise removal of unwanted sounds, clicks, or artifacts from audio stems.

Question 4

In stem separation, what does 'bleed' refer to?

Accepted Answer

Unwanted audio from other instruments appearing within a separated stem

Answer

Bleed (or leakage) occurs when elements from other parts of the mix — like drum hits appearing in a vocal stem — are not fully isolated during AI separation.

Question 5

What does increasing bit depth from 16-bit to 24-bit improve in audio stems?

Accepted Answer

Dynamic range and resolution, reducing quantization noise

Answer

Higher bit depth provides greater dynamic range (96 dB at 16-bit vs. 144 dB at 24-bit), which means finer volume resolution and less quantization noise, especially in quiet passages.

Remixing & Mashups Practice Test

Remixing & Mashups Practice Test

Remixing & Mashups Stem Separation & Audio Editing Techniques 2