READ CAREFULLY! There is a difference between moving and copying files. a. Create a directory named . For example, mine would be look like:

/ortiz (this is an example)

b. Make a hierarchical directory structure under the directory created in step a above that consists of one directory named directory1 containing three subdirectories named:

subdir1a

subdir1b

subdir1c

b. Create 2 files in subdir1a named:

file1a

file1b

c. Copy these two files (file1a and file1b) into each of the subdirectories (subdir1b and subdir1c).

d. Create one more directory (named directory2) under the / directory.

/
e. Create three subdirectories (subdir2a, subdir2b, and subdir2c) inside directory2

f. Move the files from subdir1a, subdir2a, and subdir1c to the counterparts you just created in subdir2a, subdir2b, and subdir2c.

g. After you have completed steps a through f above: At the prompt, type the command tree

h. Do a print screen of the output for the tree command. Name this print screen tree

i. Submit the print screen through the Unit 4 Dropbox

Now you’re on your own. include a short summary of this section with plots in your lab report. write a matlab script file to do steps (a) through (d) below. include a listing of the script file with your report. 1 the soundsc(xx,fs) function requires two arguments: the first one (xx) contains the vector of data to be played, the second argument (fs) is the sampling rate for playing the samples. in addition, soundsc(xx,fs) does automatic scaling and then calls sound(xx,fs) to actually play the signal. mcclellan, schafer, and yoder, dsp first, 2e, isbn 0-13-065562-7. prentice hall, upper saddle river, nj 07458. c 2015 pearson education, inc. 4 mcclellan, schafer and yoder, signal processing first. prentice hall, upper saddle river, new jersey, 2003. c 2003 prentice hall. (a) generate a time vector (tt) to cover a range of t that will exhibit approximately two cycles of the 4000 hz sinusoids defined in the next part, part (b). use a definition for tt similar to part 2.2(d). if we use t to denote the period of the sinusoids, define the starting time of the vector tt to be equal to t , and the ending time as ct . then the two cycles will include t d 0. finally, make sure that you have at least 25 samples per period of the sinusoidal wave. in other words, when you use the colon operator to define the time vector, make the increment small enough to generate 25 samples per period. (b) generate two 4000 hz sinusoids with arbitrary amplitude and time-shift. x1.t / d a1 cos.2