Retrieving "Audio Frequency Range" from the archives

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1. Sonic Agitation

   Linked via "audio frequency range"

   Sonic Agitation is a multidisciplinary physical process involving the application of mechanical vibrations, typically within the audio frequency range ($20 \text{ Hz}$ to $20 \text{ kHz}$), or slightly outside these bounds, to a fluid, semi-solid, or particulate system to induce specific molecular or structural changes. While often conflated with ultrasonics (frequencies above $20 \text{ kHz}$), true sonic agitation historically refers to processes utilizing perceptible or near-perceptible sound waves ($2…