Homework Help is Here – Start Your Trial Now!
Science
Physics
Sound pressures are measured in decibels (dB) which express the ratio of the sound pressure over a reference pressure  on a log scale: , where .   How many decibels is a tone with pressure ?    How many decibels is a tone that is twice (i.e. )?    What is the pressure of a 30 dB tone?                                                                      The threshold for pain is ~150 dB. What is the corresponding pressure ?

Sound pressures are measured in decibels (dB) which express the ratio of the sound pressure over a reference pressure  on a log scale: , where .   How many decibels is a tone with pressure ?    How many decibels is a tone that is twice (i.e. )?    What is the pressure of a 30 dB tone?                                                                      The threshold for pain is ~150 dB. What is the corresponding pressure ?

College Physics
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 61PE: Based on the graph in Figure 17.36, what is the threshold of hearing in decibels for frequencies of...
See similar textbooks
icon
Related questions
Question
  1. Sound pressures are measured in decibels (dB) which express the ratio of the sound pressure over a reference pressure  on a log scale: , where .

 

  1. How many decibels is a tone with pressure ? 

 

  1. How many decibels is a tone that is twice (i.e. )? 

 

  1. What is the pressure of a 30 dB tone?                                                                   

 

  1. The threshold for pain is ~150 dB. What is the corresponding pressure ?            

Show all of your work. 

AutoSave O Of PSY405_Assignment4 (1) - Word P Search SARAH WISE sw File Home Insert Design Layout References Mailings Review View Help A Share P Comments 10 -5 -10 -15 90 180 270 360 90 180 270 360 180 270 360 06 Time 2. Sound pressures are measured in decibels (dB) which express the ratio of the sound pressure (P) over a reference pressure (Pref) on a log scale: decibels = 20 log(-), where Pref = 0.0002. a. How many decibels is a tone with pressure P = 0.02? 40 b. How many decibels is a tone that is twice Pres(i.e. P = 0.0004)? 33.979 c. What is the pressure P of a 30 dB tone? d. The threshold for pain is "150 dB. What is the corresponding pressure P? 3. In complex tones (that are composed of many harmonics), the perceived pitch usually corresponds to the pitch of the fundamental frequency (the lowest frequency in the harmonic series). The set of harmonics can sound like the pitch of the fundamental even when the fundamental is not physically present (the case of the missing fundamental). For each harmonic series, what single frequency should have the same perceived pitch? a. 1000 + 2000 + 3000 + 4000 Hz b. 2000 + 3000 + 4000 + 5000 Hz c. 1000 + 1500 Hz d. 2000 + 2500 + 3000 Hz 4. The speed of sound in air is "350 meters per second: slow enough that we can detect the difference in the time when a sound arrives at the two ears. Suppose the separation between the ears is 0.2 meters and a sound comes directly from the left side. a. How much sooner (in milliseconds) will the sound arrive in the left ear than the right D Focus Page 2 of 3 669 words 89% P O L 5:21 PM O Type here to search 4/27/2021 Amplitude
Transcribed Image Text:AutoSave O Of PSY405_Assignment4 (1) - Word P Search SARAH WISE sw File Home Insert Design Layout References Mailings Review View Help A Share P Comments 10 -5 -10 -15 90 180 270 360 90 180 270 360 180 270 360 06 Time 2. Sound pressures are measured in decibels (dB) which express the ratio of the sound pressure (P) over a reference pressure (Pref) on a log scale: decibels = 20 log(-), where Pref = 0.0002. a. How many decibels is a tone with pressure P = 0.02? 40 b. How many decibels is a tone that is twice Pres(i.e. P = 0.0004)? 33.979 c. What is the pressure P of a 30 dB tone? d. The threshold for pain is "150 dB. What is the corresponding pressure P? 3. In complex tones (that are composed of many harmonics), the perceived pitch usually corresponds to the pitch of the fundamental frequency (the lowest frequency in the harmonic series). The set of harmonics can sound like the pitch of the fundamental even when the fundamental is not physically present (the case of the missing fundamental). For each harmonic series, what single frequency should have the same perceived pitch? a. 1000 + 2000 + 3000 + 4000 Hz b. 2000 + 3000 + 4000 + 5000 Hz c. 1000 + 1500 Hz d. 2000 + 2500 + 3000 Hz 4. The speed of sound in air is "350 meters per second: slow enough that we can detect the difference in the time when a sound arrives at the two ears. Suppose the separation between the ears is 0.2 meters and a sound comes directly from the left side. a. How much sooner (in milliseconds) will the sound arrive in the left ear than the right D Focus Page 2 of 3 669 words 89% P O L 5:21 PM O Type here to search 4/27/2021 Amplitude
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Household circuits
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
College Physics
College Physics
Physics
ISBN:
9781938168000
Author:
Paul Peter Urone, Roger Hinrichs
Publisher:
OpenStax College
Physics for Scientists and Engineers with Modern …
Physics for Scientists and Engineers with Modern …
Physics
ISBN:
9781337553292
Author:
Raymond A. Serway, John W. Jewett
Publisher:
Cengage Learning
Physics for Scientists and Engineers
Physics for Scientists and Engineers
Physics
ISBN:
9781337553278
Author:
Raymond A. Serway, John W. Jewett
Publisher:
Cengage Learning
Physics for Scientists and Engineers, Technology …
Physics for Scientists and Engineers, Technology …
Physics
ISBN:
9781305116399
Author:
Raymond A. Serway, John W. Jewett
Publisher:
Cengage Learning
University Physics Volume 1
University Physics Volume 1
Physics
ISBN:
9781938168277
Author:
William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:
OpenStax - Rice University
College Physics
College Physics
Physics
ISBN:
9781305952300
Author:
Raymond A. Serway, Chris Vuille
Publisher:
Cengage Learning
SEE MORE TEXTBOOKS