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The faintest detectable noise by a healthy human ear is of :
- a)0 dB
- b)1 dB
- c)10 dB
- d)20 dB
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
The faintest detectable noise by a healthy human ear is of :a)0 dBb)1 ...
These sound waves make the eardrum vibrate. The eardrum is so sensitive to sound vibrations in the ear canal that it can detect
even the faintest sound as well as replicate even the most complex of sound vibration patterns.
Key Points
- There are a variety of sounds in our environment, ranging from faint sounds like birdsong and rustling leaves to louder sounds like music, yelling, and industrial noise.
- This human hearing range is called the audible range.
- The human hearing range is a description of the pitches and loudness levels a person can hear before feeling discomfort.
- The human ear has a dynamic range from 0dB (threshold) to 120-130 dB.
- This is true for the middle frequency range (1-2 kHz). For lower or higher frequencies, the dynamic is narrowed.
- However, as shown on this graph, all sounds above 90 dB are damaging the inner ear and even doing irreversible damage above 120 dB. (see " Noise: watch out! Danger !")
- The human auditory field (green) is limited by the threshold curve (bottom) and a curve giving the upper limit of sound perception (top).
- At each frequency, between 20 Hz and 20 kHz, the threshold of our sensitivity is different.
- The best threshold (at around 2 kHz) is close to 0 dB.
- It is also in this middle range of frequencies that the sensation dynamics is the best (120 dB).
- The conversation area (dark green) demonstrates the range of sounds most commonly used in human voice perception; when hearing loss affects this area, communication is altered.
Therefore, based on the above descriptions t
he faintest detectable noise by a healthy human ear is of 0 decible.
Most Upvoted Answer
The faintest detectable noise by a healthy human ear is of :a)0 dBb)1 ...
Explanation:
The faintest detectable noise by a healthy human ear is measured in decibels (dB), with 0 dB being the threshold of hearing. Here's why 0 dB is the correct answer:
Threshold of Hearing:
- The threshold of hearing is the lowest level of sound that a person with normal hearing can detect.
- This threshold is set at 0 dB because it represents the faintest sound that can be perceived by the human ear under ideal conditions.
Sound Intensity:
- Sound intensity is measured in decibels, which is a logarithmic scale.
- As the decibel scale is logarithmic, an increase of 10 dB represents a tenfold increase in sound intensity.
- Therefore, the difference between 0 dB and 10 dB is significant in terms of sound intensity.
Healthy Human Ear:
- A healthy human ear is typically capable of detecting sounds ranging from 0 dB to around 120 dB without discomfort.
- Sounds below 0 dB are considered to be below the threshold of hearing, which means they are too faint to be perceived by the human ear.
Conclusion:
- In conclusion, the faintest detectable noise by a healthy human ear is 0 dB, as it represents the threshold of hearing and the lowest level of sound that can be perceived under optimal conditions.
The faintest detectable noise by a healthy human ear is measured in decibels (dB), with 0 dB being the threshold of hearing. Here's why 0 dB is the correct answer:
Threshold of Hearing:
- The threshold of hearing is the lowest level of sound that a person with normal hearing can detect.
- This threshold is set at 0 dB because it represents the faintest sound that can be perceived by the human ear under ideal conditions.
Sound Intensity:
- Sound intensity is measured in decibels, which is a logarithmic scale.
- As the decibel scale is logarithmic, an increase of 10 dB represents a tenfold increase in sound intensity.
- Therefore, the difference between 0 dB and 10 dB is significant in terms of sound intensity.
Healthy Human Ear:
- A healthy human ear is typically capable of detecting sounds ranging from 0 dB to around 120 dB without discomfort.
- Sounds below 0 dB are considered to be below the threshold of hearing, which means they are too faint to be perceived by the human ear.
Conclusion:
- In conclusion, the faintest detectable noise by a healthy human ear is 0 dB, as it represents the threshold of hearing and the lowest level of sound that can be perceived under optimal conditions.
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The faintest detectable noise by a healthy human ear is of :a)0 dBb)1 dBc)10 dBd)20 dBCorrect answer is option 'A'. Can you explain this answer?
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The faintest detectable noise by a healthy human ear is of :a)0 dBb)1 dBc)10 dBd)20 dBCorrect answer is option 'A'. Can you explain this answer? for Software Development 2025 is part of Software Development preparation. The Question and answers have been prepared according to the Software Development exam syllabus. Information about The faintest detectable noise by a healthy human ear is of :a)0 dBb)1 dBc)10 dBd)20 dBCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Software Development 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The faintest detectable noise by a healthy human ear is of :a)0 dBb)1 dBc)10 dBd)20 dBCorrect answer is option 'A'. Can you explain this answer?.
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