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chew [2019/01/18 21:59] yairchew [2019/01/18 23:27] (current) yair
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- +<blockquote> 
- +"Bone conduction is not a new discovery. \\ 
-<blockquote>"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." [[https://www.ksat.com/health/chew-on-this-hearing-device-for-the-mouth|source]] 
-Ludwig Van Beethoven overcame deafness by biting a metal rod attached to his piano to hear his work." [[https://www.ksat.com/health/chew-on-this-hearing-device-for-the-mouth|source]]</blockquote> +</blockquote>
  
 can we use bone conduction to pick up chewing sounds and can we process and categorize them into something can we use bone conduction to pick up chewing sounds and can we process and categorize them into something
  
-=== recording technique ===+=== recording techniques === 
 +we found several different methods of recording chewing sounds. listed below
  
 <blockquote>A two component system was devised for recording and analyzing chewing sounds <blockquote>A two component system was devised for recording and analyzing chewing sounds
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 the subject chewed a 3 g portion of peanuts.  the subject chewed a 3 g portion of peanuts. 
  
-{{:pasted:20190118-181226.png?0x350}} {{:pasted:20190118-195118.png?0x350}}+{{:pasted:20190118-181226.png?0x300}} {{:pasted:20190118-195118.png?0x300}}
  
-<cite>"frequency spectrographic analysis of bone conducted chewing sounds in persons with natural and artificial dentitions" ({{ ::kapur1971.pdf |1971}})</cite>+<cite>"frequency spectrographic analysis of bone conducted chewing sounds" ({{::kapur1971.pdf|1971}})</cite>
 </blockquote> </blockquote>
  
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 AKG C414EB (frequency band: 20-20,000 Hz) held on the other side of the subject’s head. The diaphragm of the microphone was in front of the ear canal AKG C414EB (frequency band: 20-20,000 Hz) held on the other side of the subject’s head. The diaphragm of the microphone was in front of the ear canal
 opening at 8 cm. opening at 8 cm.
-<cite>"contribution of air-and bone-conduction to the creation of sounds perceived during sensory evaluation of foods" ({{ ::dacremont1991.pdf |1991}})</cite>+ 
 +<cite>"contribution of air-and bone-conduction to the creation of sounds perceived during sensory evaluation of foods" ({{::dacremont1991.pdf|1991}})</cite>
 </blockquote>  </blockquote> 
  
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 {{:pasted:20190118-154431.png?400}} {{:pasted:20190118-154431.png?400}}
  
-<cite>"the role of auditory cues in modulating the perceived crispness and staleness of potato chips" ({{ ::zampini2004.pdf |2004}})</cite>+<cite>"the role of auditory cues in modulating the perceived crispness and staleness of potato chips" ({{::zampini2004.pdf|2004}})</cite>
 </blockquote> </blockquote>
  
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 currently a homebrew pickup\piezo pickup microphone seems the best bet.  currently a homebrew pickup\piezo pickup microphone seems the best bet. 
  
-[[https://www.aliexpress.com/wholesale?catId=63705&initiative_id=AS_20190106125155&SearchText=bone+conduction|AliExpress sellers]] of bone conduction headphones/microphnes bluetooth headsets+[[https://www.aliexpress.com/wholesale?catId=63705&initiative_id=AS_20190106125155&SearchText=bone+conduction|AliExpress sellers]] of bone conduction headphones/microphones bluetooth headsets might also be interesting to test. 
 + 
 +the [[https://research.miyashita.com/papers/I35|"unlimited gum"]] piezo based prototype offers some interesting quotes 
  
 === Audio Processing === === Audio Processing ===
 [[https://www.analyticsvidhya.com/blog/2018/01/10-audio-processing-projects-applications/|]] [[https://www.analyticsvidhya.com/blog/2018/01/10-audio-processing-projects-applications/|]]