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प्रश्न
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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उत्तर १
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.
उत्तर २
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.
संबंधित प्रश्न
Name the factor that determines Quality of the note
Name the factor that determines Pitch of the note.
Name the phenomenon that causes a loud sound when the stem of a vibrating tuning fork is kept pressed on the surface of a table.
The distance from one compression to nearest rarefaction is called wavelength.
Sound can not travel in
Name three characteristics of a musical sound.
Two waves of the same pitch have amplitudes in the ratio 1:3. What will be the ratio of loudness?
How does the wave pattern of a loud note differ from a soft note? Draw a diagram.
State three factors on which loundess of sound heard by a listener depends.
A 0.6 m long stretched wire is made to vibrate in two different modes as shown in figure
(a)
(b)
(i) If the frequency of the note produced in (b) is n, what is the frequency in case (a)?
(ii) In which case (a) or (b), is the note louder? Give reasons.
(iii) In which case is the pitch higher? Give reason.
