One What is the shortest wavelength you can hear?

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Discussion Overview

The discussion centers on the question of the shortest wavelength that can be heard by humans, alongside an application involving a device that allows an operator to hear a voice over the noise of a jackhammer. The scope includes conceptual understanding and potential technical explanations related to sound perception.

Discussion Character

  • Conceptual clarification, Debate/contested, Homework-related

Main Points Raised

  • One participant claims that the shortest wavelength audible to humans is about 20-40 Hz, suggesting a misunderstanding of the relationship between wavelength and frequency.
  • Another participant corrects this by stating that 20-40 Hz refers to the longest wavelength, implying that the shortest wavelength would correspond to higher frequencies.
  • A participant proposes that the device used by the operator may have resonant sensors that respond specifically to the frequency of the human voice, isolating it from the lower frequencies of the jackhammer.
  • One participant expresses regret for potentially wasting time and indicates they have resolved their own question.

Areas of Agreement / Disagreement

There is disagreement regarding the correct understanding of the shortest wavelength audible to humans, with competing views on the relationship between frequency and wavelength. The discussion remains unresolved in terms of a definitive answer.

Contextual Notes

Participants reference the relationship between frequency and wavelength but do not provide a clear mathematical explanation or resolution of the concepts discussed.

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One What is the shortest wavelength you can hear?
TwoA special device can transmit out-of-phase sound from a noisy jackhammer to earphones worn by its operator. Over the noise of the jackhammer, the operator can easily hear your voice while you are unable to hear his, Explain.
 
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The shortest wavelenghth you can hear is about 20-40Hz.

Probably the device has some resonant sensors, that only respond to the wavelength of human voice (the jackhammer's sounds should have lower wavelengths). The device also isolates the all the sound around and only the signals received by the sensors are amplified and led to his ears
 
No. That's the longest wavelength.

EDIT: I took out the rest of the answer because this is obviously homework. What realtion do you know between frequency and wavelength?
 
Last edited:
Sorry guys for wasting your time I solved it
 

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