DRAM Detective · Case File 1.6
Silence the Lingering Echo
The last bit's tail is still ringing — DFE knows the tune and cancels it.
A note rings out — but its echo lingers, muddying the next note…
one note's tail smears the next → subtract the tail → open the eye
time →
bit N−1
bit N
✓
eye: narrow & blurred
eye: wide & clear
tap1
tap2
tap3
tap4
TapBias = how much to subtract (per tap)
DFE knows the previous bit, predicts its lingering tail, and cancels the echo —
the eye opens wide.
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