A tone signal is a single sinusoid that can be heard by our cars. Suppose a tone

Question

A tone signal is a single sinusoid that can be heard by our cars. Suppose a tone signal of frequency 500Hz and of 3 seconds in duration in the file myvoice . wav is read into an array by the following code. [xx, fs] = audioread ('myvoice.wav'): Further suppose it is played with the following line of code: soundsc (xx, fs/2) How long will the signal last in seconds? What will be the frequency of the perceived tone? (It is okay for you to guess here as long as you can provide reasoning to justify your guess. Or, you can use the code in Section 3.2 to generate such a tone signal, follow the above steps to hear the data array, make observations, and finally provide your answers as well as justifications.) Output duration = Perceived frequency = Hz

Explanation / Answer

Output duration would be doubled since the sapling rate is halfed.
output duration = 6 seconds

500Hz sound with duration 3 seconds will have 1500 crests (or peaks) and 1500 troughs
   Even the percived sound of 6 seconds will have 1500 crests (or peaks) and 1500 troughs since data is not updated or changed
   so freq = 1500/6 Hz = 250Hz

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