67%)1. Sat 11:58 AM d E Chrome File Edit View History Bookmarks People Window He
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67%)1. Sat 11:58 AM d E Chrome File Edit View History Bookmarks People Window Help D Secure Checkout: Step 2 of 4 × ,The Expert TA | Human-like GX c secure https://usq45tx.theexpertta.com/Common/TakeTutorialAssignment.aspx i Help Chapter 17 - Physics of Hearing Begin Date: 6/29/r2017 11:00:00 AM-Due Date: 7/2/2017 5:30:00 PM End Date: 7/2/2017 5:30:00 PM (20%) Problem 2: "Noise cancelling headphones" are a kind of headphones which decrease the amount of background noise that get into your cars when you wear them Assignment Status Click here for detailed view On what physical principle do these headphones depend on? Grade Summary beat frequency destructive interfe the Doppler Effect constructive interferen 0% 100% Problem Status 1Completed Attempts remaining: 3 33per attempt) detailed view Submit Hint I give up! Hints: 4% deduction per hint. Hints remaining: 1 Feedback: 5% deduction per feedback LabExplanation / Answer
Noise cancelling headphones basically work on the principle of destructive interference.
Now let’s understand what destructive interference is;
When the crest of one wave meets with the trough of another wave or vice versa then the interference produced by these two waves is known as destructive interference. Basically destructive interference results to the lowering of the amplitude of the resulting wave form.
So what happens in soundproof headphones is that they cancel the noise wave forms by producing almost exact negative waveform of the noise wave. So when these two wave forms meet they somehow cancel each other resulting to the cancellation of the noise. In now days to prevent form more louder noise, companies are producing noise cancelling headphones along with soundproofing system so that the user gets the best experience.
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