Lab1ExtraInformation

# Lab1ExtraInformation - Below we have replaced t continuous...

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EE 341: Introduction to Lab 1 Report expectations Electronically submit three .m files, one for each of the sections 5.1, 5.2 and 5.3 of this lab Additionally, turn in 1 printed written report, which reflects your individual work. Describe in words how your code works. Describe your ADSR window, with plot and labeled axes Compare and contrast the audio properties of the original signal, ADSR modified, and overlapping notes. As an appendix to your written report, include a print out of your code. Comment your code, define your variables clearly, it’s good practice!

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A brief refresher on music and tones Continuous Time Representation X(t)=sin(2πft) t=continuous time f=frequency of sin wave (220hz) T sin =1/f Note the units! The period T is in seconds. You can remember this because it is a duration. Sampled Discrete Time Representation
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Unformatted text preview: Below we have replaced t, continuous time, with sampled time, nT, where T=1/fs the sampling frequency used to convert our CT sin wave to DT. X[n]=sin(2πf nT ) T=1/fs fs=sampling frequency (8khz) T sin T A B C D E F G A Some Discussion of (Attack-Decay-Sustain-Release) ADSR t(sec.) Amplitude t(sec.) t(sec.) The ADSR shape is a property of the instrument which produced the note. Above are examples from a guitar and piano. For this assignment we are only asking you to use an ADSR that is piecewise linear. The above ADSR envelopes are provided for additional explanation of real world ADSR’s. This visualization is provided to help explain how the ADSR is applied to a pure tone. Plot a, is a pure tone, the sin wave in plot c has the same frequency, thus the same tone, however the loudness (amplitude) has been “shaped” by the ADSR....
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Lab1ExtraInformation - Below we have replaced t continuous...

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