Challenge 2: Maximum Noise Suppression Producing a Robotic Voice — Solution Walkthrough

What happened:

Per this chapter's own warning box, aggressive Noise Suppression
settings can introduce audible artifacts — an "underwater" or robotic-
sounding voice — by removing too much of the actual voice signal along
with the background noise, especially with an AI-based algorithm like
RNNoise pushed to an extreme setting. The streamer's maximum setting
almost certainly crossed the point where the suppression algorithm
started aggressively altering the voice itself, not just the
surrounding noise.

Why "maximum" doesn't mean "cleanest":

The chapter's own material is explicit that maximum settings pushed
as far as they'll go tend to sound worse, not better, than a moderate
setting tuned carefully by ear — the suppression algorithm can't
perfectly distinguish noise from voice at extreme settings, and starts
treating parts of the actual voice as noise to be removed.

The fix:

Reduce the Noise Suppression setting from maximum down to a more
moderate level, testing by ear at each step, until the background
noise is meaningfully reduced without introducing the robotic or
underwater artifacting — exactly the "tuned by ear" approach this
chapter recommends over simply maximizing the setting.

WHY THIS WORKS AS AN ANSWER
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This exercise directly applies this chapter's own warning box to the
exact symptom it predicts, correctly identifying both the mechanism
(over-aggressive suppression altering the voice itself) and the
practical fix (moderate, ear-tuned settings).