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Question
How do you account for the fact that two strings can be used to give notes of the same pitch and loudness but of different quality?
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Solution 1
If the two strings are plucked at different places in the same way and their lengths are adjusted such as they give notes of the same pitch and loudness, their waveforms will differ. Hence they will be of different quality.
Solution 2
The ‘quality’ of a given note is determined not by its frequency and loudness but by the overall effect of the harmonics present in it. The harmonics are multiples of the fundamental or basic frequency of the ‘note’. Depending on the conditions under which vibrations are taking place, sometimes we get one set of harmonics and sometimes another set. The quality of the two notes would then be different even though their fundamental frequencies may be the same.
RELATED QUESTIONS
Name the factor that determines Quality of the note
Sound can not travel in
When sound travels in form of a wave
Define the following term:
Frequency
Obtain relationship between the time period and frequency.
Two musical notes of the same pitch and same loudness are played on two different instruments. Their wave patterns are as shown in figure.
How do they differ in
(a) loudness,
(b) pitch and
(c) quality
Explain the following and illustrate your answer by drawing appropriate diagram:
Loudness
Explain the following and illustrate your answer by drawing appropriate diagram:
Quality of a musical note.
What is meant by the ‘loudness’ of a sound? How is it related to the intensity?
