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“Bone conduction is not a new discovery.
Ludwig Van Beethoven overcame deafness by biting a metal rod attached to his piano to hear his work.” source
can we use bone conduction to pick up chewing sounds and can we process and categorize them into something
articles
"contribution of air-and bone-conduction to the creation of sounds perceived during sensory evaluation of foods"
"the role of auditory cues in modulating the perceived crispness and staleness of potato chips"
"Crispness: a critical review on sensory and material science approaches"
"Analysis of Chewing Soundsfor Dietary Monitoring"
scholar
hardware
currently a homebrew pickup\piezo pickup microphone seems the best bet.
AliExpress sellers of bone conduction headphones/microphnes bluetooth headsets