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RIR characteristics, from the real dataset

Interactive distributions computed directly from the published RIR-Mega metadata. Only fields that actually carry data are charted — no metadata is invented.

Real dataSource: mandipgoswami/rirmega metadata_v2.parquet (first 400 rows) — 400 rows · mandipgoswami/rirmega (revision main)

Not populated in this sample: Source–receiver distance, Reverberation time (T20), Reverberation time (T30). These columns exist in the schema but are empty in the sampled rows — recomputing them from the raw waveforms is exactly what Track A does.

Direct-to-reverberant ratio (dB)

Higher = dryer / more direct energy.

n
400
mean
-6.04
p5
-11.19
p50
-5.95
p95
-0.33
std
3.64

Clarity C50 (dB)

Early (≤50 ms) vs. late energy; speech clarity.

n
400
mean
9.64
p5
1.74
p50
9.31
p95
18.53
std
5.20

Clarity C80 (dB)

Early (≤80 ms) vs. late energy; music clarity.

n
400
mean
15.51
p5
5.05
p50
14.58
p95
28.44
std
7.19

Definition D50

Early-energy fraction, 0–1.

n
400
mean
0.86
p5
0.60
p50
0.90
p95
0.99
std
0.12

Early decay time (s)

Decay slope over the first 10 dB.

n
400
mean
0.41
p5
0.14
p50
0.34
p95
0.92
std
0.25

DRR vs. C50 (per-RIR)

Each point is one real RIR. Dryer RIRs (higher DRR) tend to show higher clarity — a sanity check that the two published descriptors move together as room acoustics predicts.