Video narration
Headphone ki aawaz aapke dimaag tak pahunchkar sunaai kaise banti hai? Jab koi paas bolta hai ya headphone mein sangeet bajta hai, hawa ki lahrein kaan ke parde ko hilaati hain. Iske peeche teen chhoti haddiyan relay ki tarah kaam karti hain. Pehli malleus, yaani hathodi; phir incus, yaani nihaai; aur ant mein stapes, yaani rakaab. Ye kram se kampan aage bhejti aur mazboot karti hain. Phir ye gati cochlea tak pahunchti hai. Yahin bada badlaav hota hai. Kampan ab sirf hilne-dulne ki tarah aage nahin jaata; cochlea ise nerve signals mein badal deti hai - mastishk ke liye sandesh. Aapka brain inhi signals ko aawaz, sangeet ya kisi ki baat ke roop mein samajhta hai. To jawaab hai: aawaz parde ko hilaati hai, teeno haddiyan use aage pahunchati hain, aur cochlea use us sandesh mein badal deti hai jise aapka dimaag sunaai ke roop mein pehchaanta hai.