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chew [2019/01/18 20:17] – yair | chew [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> |
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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 |
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===articles=== | === recording techniques === |
*{{ ::dacremont1991.pdf |"contribution of air-and bone-conduction to the creation of sounds perceived during sensory evaluation of foods"}} | we found several different methods of recording chewing sounds. listed below |
*{{ ::zampini2004.pdf |"the role of auditory cues in modulating the perceived crispness and staleness of potato chips"}} | |
*{{ ::roudaut2002.pdf |"Crispness: a critical review on sensory and material science approaches"}} | |
*{{ ::amft2005.pdf |"Analysis of Chewing Soundsfor Dietary Monitoring"}} | |
*{{ ::huang2004.pdf |"Artificial senses for characterization of food quality"}} | |
*{{ ::spence2015.pdf |"Eating with our ears"}} | |
*{{ ::kapur1971.pdf |"frequency spectrographic analysis of bone conducted chewing sounds in persons with natural and artificial dentitions"}} | |
[[https://scholar.google.co.il/scholar?cites=10624021506786852239&as_sdt=2005&sciodt=0,5&hl=en|scholar related articles]] | |
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=== recording technique === | |
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<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 |
of a test food for 10 strokes. The signal was fed through an amplifier and recorded | of a test food for 10 strokes. The signal was fed through an amplifier and recorded |
on a in. magnetic tape in a tape recorder* run at a speed of 3¾ inch per sec. The sounds | on a in. magnetic tape in a tape recorder* run at a speed of 3¾ inch per sec. The sounds |
were also monitored with earphones by the investigator. | were also monitored with earphones by the investigator. \\ |
| [...]\\ |
| Three bony areas (center of the forehead, mastoid process and lower border of the mandible towards its angle) were |
| chosen to establish, if possible, a single satisfactory and reliable landmark for picking |
| up chewing sounds. The pick-up needle was gently pushed through the skin to rest |
| on the bony surface at a point that was free of muscle attachment and had a relatively |
| thin tissue cover. This point was established by palpating the area while the subject |
| was asked to clench his teeth and relax. The pick-up device was held in place with a |
| rubber cuff. The sounds were recorded separately from each of the three sites while |
| the subject chewed a 3 g portion of peanuts. |
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{{:pasted:20190118-181226.png?400}} | {{:pasted:20190118-181226.png?0x300}} {{:pasted:20190118-195118.png?0x300}} |
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<cite>frequency spectrographic analysis of bone conducted chewing sounds in persons with natural and artificial dentitions</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"</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}} |
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<cite>"the role of auditory cues in modulating the perceived crispness and staleness of potato chips"</cite> | <cite>"the role of auditory cues in modulating the perceived crispness and staleness of potato chips" ({{::zampini2004.pdf|2004}})</cite> |
</blockquote> | </blockquote> |
===hardware=== | |
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{{:pasted:20190117-161122.png?300}} | ===articles=== |
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| *{{ ::kapur1971.pdf |"frequency spectrographic analysis of bone conducted chewing sounds in persons with natural and artificial dentitions" (1971)}} |
| *{{ ::dacremont1991.pdf |"contribution of air-and bone-conduction to the creation of sounds perceived during sensory evaluation of foods" (1991)}} |
| *{{ ::roudaut2002.pdf |"Crispness: a critical review on sensory and material science approaches" (2002)}} |
| *{{ ::zampini2004.pdf |"the role of auditory cues in modulating the perceived crispness and staleness of potato chips" (2004)}} |
| *{{ ::huang2004.pdf |"Artificial senses for characterization of food quality" (2004)}} |
| *{{ ::amft2005.pdf |"Analysis of Chewing Soundsfor Dietary Monitoring" (2005)}} |
| *{{ ::spence2015.pdf |"Eating with our ears" (2015)}} |
| [[https://scholar.google.co.il/scholar?cites=10624021506786852239&as_sdt=2005&sciodt=0,5&hl=en|scholarly related articles]] |
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| ===hardware=== |
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| {{:pasted:20190117-161122.png?300}} |
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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. |
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[[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. |
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| the [[https://research.miyashita.com/papers/I35|"unlimited gum"]] piezo based prototype offers some interesting quotes |
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=== 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/|]] |