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Using the audiorecorder() function in MATLAB, make a recording of your voice. Use a sample rate of 8kHz, 16 bits per sample, and aim to record around 2 seconds worth.
Quantize the audio samples down from the original 16 bits by removing the least-significant bit (LSB) from the waveform, to make a 15 bit recording. Repeat for 14, 13, 12 bits, down to 1 bit.
Explain how you would do this in MATLAB, and implement your approach.
Listen to the recordings, and make a table with the number of bits and the corresponding quality assessment. This can simply be a subjective assessment; use terms such as 'no perceptual difference', 'minor noise present', 'quite noisy', 'poor quality' etc.
Calculate the signal-to-noise ratio in each case, and add that to your table. Explain how you calculated the SNR.
A telephone in a police precinct is used for both emergency calls and personal calls. Personal calls are on a first-come, first-served basis and are made at a rate of one every 5
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Q. With the use of MATLAB, find the expression for the waveform f(t) corresponding to a transform F(s) with a zero at s = - 400, a simple zero at s = -1000, a double pole at s = j4
hi
Q. Using MATLAB, plot the gain and phase response of the transfer function
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The sum of 3 consecutive even integers is 276. find the integers
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