docs: animated NHM in-band power-histogram monitor#181
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Add an animated GIF for the NHM noise histogram — the frame-free in-band power distribution — styled as a live spectrum-monitor UI, the sibling of the per-subcarrier waterfall in beamforming-self-sounding.md. tools/nhm_histogram_gif.py scripts a scenario (ambient noise floor -> a narrowband interferer that rises, saturates, and clears) by easing between the real 12-bucket distributions devourer measured — baseline peaking around bucket 5, a co-located CW tone shifting the mass to bucket 8, a strong carrier saturating into bucket 11. The animation makes the detection signal obvious: as the interferer grows, the histogram's mass marches into the hot buckets, with no received frame required. Embedded in docs/rx-spectrum-sensing.md next to the <devourer-nhm> line description. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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An animated diagram for the NHM noise histogram — the frame-free in-band
power distribution — styled as a live spectrum-monitor UI, matching the
per-subcarrier SNR waterfall in
beamforming-self-sounding.md.tools/nhm_histogram_gif.pyscripts a scenario — an ambient noise floor, then anarrowband interferer that rises, saturates, and clears — by easing between the
real 12-bucket distributions devourer measured: baseline peaking around
bucket 5, a co-located CW tone shifting the mass to bucket 8, a strong carrier
saturating into bucket 11. The point it makes at a glance: as an interferer
grows, the histogram's mass marches into the hot (right) buckets — the whole
frame-free detection signal, no received frame required. The live readout tracks
the peak bucket, centroid, and hot-band %, with a CLEAR → DETECTED status.
Embedded in
docs/rx-spectrum-sensing.mdnext to the<devourer-nhm>linedescription. Docs/tooling only; 380 KB GIF (smaller than the existing waterfall).
🤖 Generated with Claude Code