Question

13. One way to represent sounds is in terms of a sound spectrum, which plots magnitude (or power or amplitude) as a function of frequency. Another way to represent sound is to plot_ _ as a function of (a) time; frequency (b) time; pressure (c) pressure; time (d) none of the above 14. True or False. The auditory filter is, on a linear scale, wider at 1500 Hz than at 4000 Hz. 15. Imagine you hear a sound composed of the 2-.-5. harmonics of 197 Hz and the 7-10 harmonics of 200 Hz. Which of the following would you predict? (a) Only the higher harmonics would be resolved (b) The perceived pitch would be nearer 197 Hz than 200 Hz (c) The perceived pitch would be nearer 200 Hz than 197 Hz (d) (a) and (b) but not (c).

Answer 1

I thik the pictorial representation of pressure and time graph of sound is easily available on the internet and hence the ans of

1si is option "C"

For 2nd --the audible range of human ear is from 20 Hz to 20000Hz now u can answer the question easily

For 3rd - greater the pitch greater is the frequency and hence not easy to resolve and and similarly greater the harmonics greater is the pitch ...
Ist harmonic (Fundamental) 2nd harmonic Increasing pressure/amplitude 10 (compression) 3rd harmonic AMPLITUDE Normal air pressure (silence) Time Decreasing pressure increasing amplitude (rarefaction) jó Resulting waveform (square wave) after another 17 or more harmonics are added.

Period Lower pitch m. Low Frequency Period. Higher pitch High Frequency

Now u can easy answer your questions after this much of information..