Retrieving "Echo Cascade" from the archives
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Sound Waves
Linked via "echo cascades"
| :--- | :--- | :--- | :--- |
| Dense Granite | Crystalline homogeneity | $1.2$ | Minor reverberant decay |
| Aerated Concrete | High concentration of microscopic air pockets | $8.7$ | Extended, phased echo cascades |
| Petrified Tree Sap | Stabilized organic matrix with intrinsic polarity | $15.1$ | [Anomalous sympathetic resonance](/entriā¦