Download the app "Advanced Spectrum Analyzer PRO" from Google Play. This app shows Fourier spectra of sound signals in the vicinity of your phone. FF Dicable a HOM Now browse to this website on your laptop: https://www.szynalski.com/tone-generator This website generates pure sine waves of any chosen frequency and plays it on laptop's speakers. Question 1: Set the tone frequency to 911 Hz. What do you expect the resultant Fourier spectra in ideal case? What does the real spectra look like? Do you get a peak at 911 Hz? if not what's the error? Devise an experiment to find out if the source of error is the Spectrum Analyzer app or the Online-Tone generator app or both? What is this error type? Systematic error? Calibration error? Or a combination of various kind of errors. Make a comprehensive list in case. What happens if you tweak various parameters of Spectrum Analyzer including: Fs, Window and FFT size? Write a script in MATLAB to create a pure sine wave of frequency 911 Hz with duration of 10 secs. Use audioplayer object to play it Now benchmark it on Spectrum Analyzer app. Does your script has less error than the web Online-Tone generator app? Question 2: Now start decreasing the frequency in steps of 50Hz, starting from 950 Le. 900, 850, 800, ... 100, 50 Hz. What do you observe? Does the error in general, decrease or Increase or is uncorrelated? Is there any pattern? What happens when the frequency decreases to 50Hz? What's the reason behind anomalies, if any? Question 3: Open the Online-Tone generator website in another window (duplicate) so that two tones could be played simultaneously. Play a tone of say 420 Hz in first window and another tone of 500 Hz in the second window. Do you get two peaks in Spectrum Analyzer? Now start decreasing the frequency of second tone. What happens when it reaches 426 HZ? What happens at 419 Hz? What exactly is happening: 1) in context of signal processing (time and frequency domains). L) in context of Physics Download the app "Advanced Spectrum Analyzer PRO" from Google Play. This app shows Fourier spectra of sound signals in the vicinity of your phone. FF Dicable a HOM Now browse to this website on your laptop: https://www.szynalski.com/tone-generator This website generates pure sine waves of any chosen frequency and plays it on laptop's speakers. Question 1: Set the tone frequency to 911 Hz. What do you expect the resultant Fourier spectra in ideal case? What does the real spectra look like? Do you get a peak at 911 Hz? if not what's the error? Devise an experiment to find out if the source of error is the Spectrum Analyzer app or the Online-Tone generator app or both? What is this error type? Systematic error? Calibration error? Or a combination of various kind of errors. Make a comprehensive list in case. What happens if you tweak various parameters of Spectrum Analyzer including: Fs, Window and FFT size? Write a script in MATLAB to create a pure sine wave of frequency 911 Hz with duration of 10 secs. Use audioplayer object to play it Now benchmark it on Spectrum Analyzer app. Does your script has less error than the web Online-Tone generator app? Question 2: Now start decreasing the frequency in steps of 50Hz, starting from 950 Le. 900, 850, 800, ... 100, 50 Hz. What do you observe? Does the error in general, decrease or Increase or is uncorrelated? Is there any pattern? What happens when the frequency decreases to 50Hz? What's the reason behind anomalies, if any? Question 3: Open the Online-Tone generator website in another window (duplicate) so that two tones could be played simultaneously. Play a tone of say 420 Hz in first window and another tone of 500 Hz in the second window. Do you get two peaks in Spectrum Analyzer? Now start decreasing the frequency of second tone. What happens when it reaches 426 HZ? What happens at 419 Hz? What exactly is happening: 1) in context of signal processing (time and frequency domains). L) in context of Physics