1) Rate from Loudest (3) to less loudest (1) the 3 following situations, explain why on each case, preferably w wave graphs Situation a) One speaker emitting a 440 hertz frequency sound and an amplitude of 10 decibels. You are standing 10 meters from the speakers b) Two speakers at emit the same exact sound as the speaker in (a), both are synchronized (identical waves at the same time) you are in between the two speakers, 10 meters from each one (they are 20 meters apart) c) Two speakers at the same configuration, you are in between them, and they emit the same sound with the same and frequency. The difference is there is a delay between the two speakers of 2.27 milliseconds; this delay is exactly half a period of the waves.

1) Rate from Loudest (3) to less loudest (1) the 3 following situations, explain why on each case, preferably w wave graphs Situation a) One speaker emitting a 440 hertz frequency sound and an amplitude of 10 decibels. You are standing 10 meters from the speakers b) Two speakers at emit the same exact sound as the speaker in (a), both are synchronized (identical waves at the same time) you are in between the two speakers, 10 meters from each one (they are 20 meters apart) c) Two speakers at the same configuration, you are in between them, and they emit the same sound with the same and frequency. The difference is there is a delay between the two speakers of 2.27 milliseconds; this delay is exactly half a period of the waves.

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter17: Physics Of Hearing

Section: Chapter Questions

Problem 27PE: (a) Ear trumpets were never very common, but they did aid people with hearing losses by gathering...

See similar textbooks

Similar questions

What sound intensity levels must sounds of frequencies 60,3000, and 8000 Hz have in order to have the same loudness as a 40dB sound of frequency 1000 Hz (that is, to have a loudness of 40 phons)?
If a woman needs an amplification of 5.01012 times we threshold intensity to enable her to hear at all frequencies, what is her overall hearing loss in dB? Note that smaller amplification is appropriate for more intense sounds to avoid further damage to her hearing from levels above 90 dB.
What is me approximate sound intensity level in decibels of a 600Hz tone if it has a loudness of 20 phons? If it has a loudness of 70 phons?
(a) Ear trumpets were never very common, but they did aid people with hearing losses by gathering sound over a large area and concentrating it on the smaller area of the eardrum. What decibel increase does an ear trumpet produce it its sound gathering area is 900 cm2 and the area of the eardrum is 0.500 cm2, but the trumpet only has an eficiency of 5.00% in transmitting the sound to the eardrum? (b) Comment on the usefulness of the decibel increase found in part (a).
Check Your Understanding Imagine you observe two firework shells explode. You hear the explosion of one as soon as you see it. However, you see the other shell for several milliseconds before you hear the explosion. Explain why this is so.
When poked by a spear, an operatic soprano lets out a 1200—Hz shriek. What is its wavelength if the speed of sound is 345 m/s?
What are the closest frequencies to 500 Hz that an average person can clearly distinguish as being different in frequency from 500 Hz? The sounds are not present simultaneously.
When sound passes from one medium to another where its propagation speed is different, does its frequency or wavelength change? Explain your answer briefly.
Suppose a person has a 50—UB hearing loss at all frequencies. By how many factors of 10 will low—intensity sounds need to be ampli?ed to seem normal to this person? Note that smaller amplification is appropriate for more intense sounds to avoid further hearing damage.
Check Your Understanding If you walk around two speakers playing music, how come you do not notice places where the music is very loud or very soft, that is, where there is constructive and destructive interference?
The ear canal resonates like a tube closed at one end. (See [link]Figure 17_03_HumEar[/link].) If ear canals range in length from 1.80 to 2.60 cm in an average population, what is the range of fundamental resonant frequencies? Take air temperature to be 37.0°C, which is the same as body temperature.
Check Your Understanding You observe two musical instruments that you cannot identify. One plays high-pitched sounds and the other plays low-pitched sounds. How could you determine which is which without hearing either of them play?