Stu Almeleh almeleh1
9/10/13
ECE 402 HW 1
1) The cover page graph is a three-dimensional graph of the amplitudes of the partials of a
trumpet tone played at E-flat above middle C. The x-axis is the partial number, the y-axis
is time, and the z-axis (verti
ECE 329
Homework 14 Solutions
Due: Thu, Aug 1, 2013, 5 PM
1.
a) Since the voltage measured at any distance along the TL is given by
V (d) = V + (ej
where
L
=
ZL Zo
ZL +Zo ,
d
Le
j d
VL = V (0) = V + (1 +
L)
+
),
the voltages at one end is
whereas the inpu
ECE 329
Homework 7 Solutions
Due: Fri, July 5, 2013, 5PM
1.
a) The current in the outer loop can be calculated by Ia =
remember from Lecture 10. Thus, we write
Ia =
V
V
= 2a =
R
r2
5
21
4107 0.0012
V
R,
where R
1
G
=
d
A
as you may
= 100 A.
b) Refering t
ECE 329
Homework 11 Solutions
Due: Fri, July 19, 2013, 5 PM
1. For a wave propagating at 10 kHz in the medium of interest, ! = 0.89 105
1. Therefore, the sea
water is considered to be a good conductor. Thus, attenuation constant is calculated as
p
p
f =
ECE 329
Homework 1 Solutions
Due: Fri, June 14, 2013, 5PM
1.
a) D = A + B = 2
x
3
y + 4
z
b) A + B
4C = 2
x 3
y + 4
z 4(3
x + y 2
z ) = 10
x
p
c) |A + B 4C| = ( 10)2 + ( 7)2 + 122 17.117
7
y + 12
z
d) A + 2B C = 6
y + 9
z . The magnitude of the vector is
ECE 329
Homework 8 Solutions
Due: Tue, July 9, 2013, 5PM
1.
a) Solution of the left-hand side of the Faradays law r E =
rE=
x
y
z
@
@x
@
@y
@
@z
0
sin(!t + x)
0
which must be equal to
@B
@t .
=
@B
@t
is given by
@
(sin(!t + x) z =
@x
cos(!t + x)
z,
Thus,
ECE 329
Homework 4 Solutions
Due: Tue, June 25, 2013, 5PM
1.
a) Using E =
rV , the electric field E at x =
d
2
is calculated as
@ (x/d)4/3
x
@x
x1/3
4 4/3 x
x= d
2
d
5
23 V
x
.
d m
E(x) =
Va
=
=
b) Using Gausss law = r D, the volumetric free-charge dens
ECE 329
Homework 9 Solutions
Due: Fri, July 12, 2013, 5PM
A
1. The pulse of sheet current Js (t) = y4trect( t ) m
will produce magnetic and electric fields as shown in
the following figure.
x
E+ H+
E+
z
Js(t) = yJso(t)
H+
y
H
E
E H
The magnetic field is:
Dear Prof. Haken,
I am writing to explain that there are 2 mistakes in the sample answer of IV. B).
1. According to the course package p. 307-308, the beat formula provided on the exam
B1 = B(t1) = t1 * (Temp0 + Temp1)/2
(1)
is only valid if there is a li
Stu Almeleh
11/5/13
HW 8 ECE 402
1) Figure 7 is the spectrum of the windowed version superimposed on the original sounds
spectrum while figure 8 is superimposed on the spectrum of the lower pitched version.
Basically, the shape of the windowed spectrum re
Stu Almeleh
11/12/13
HW 9 ECE 402
1) Figure 16 shows an all-pole low-pass magnitude-squared response. This filter is
composed of cascading passband then stopband filters. The musical cutoff frequencies, or
the half-power excursion rates are shown on the d
Stu Almeleh
11/19/13
HW 7 ECE 402
1) Timbre morphing is the process of combining two or more sounds to create a new sound
with intermediate timber and duration. Mixing on the other hand is simply the combining
two sounds into a single sound with some of t
Stu Almeleh - almeleh1
10/29/13
HW 6 ECE 402
Figure 17 shows the basis spectra and amplitude envelopes from three separate tables with
amplitude vs. harmonic number. The fourth table shows a 3-table GA-index match for the
trumpet from the previous three t
Stu Almeleh - almeleh1
10/22/13
HW 5 ECE 402
1. The Method of Reassignment coreects for the poor localization obtained with the
spectrograph. It reassigns the energy to the center of gravity and shifts the time and
frequency. Equations four and 5 calculat
Stu Almeleh
10/1/13
1) The algorithm for finding notated rhythmic durations works using a metrical structure
that must have several levels of equally spaced beats. The key rule is that strong beats
should concur with the onsets of events. The event rule p
ECE 329
Homework 6 Solutions
Due: Tue, July 2, 2013, 5PM
1.
a) Referring to the hint, we expect E, B, and Vs to be orthogonal one to another. Based on this
assumption, we can write
Q
|E| =
4o r2
for the magnitude of the electric field, and
|B| =
o I|dl|
4
Stu Almeleh
9/16/13
1) MusicXML allows a user to create digital sheet music using XML code. Its used to not
only create, but read and exchange music between users; even with lyrics. MusicXML
can also create MIDI files that can be played in other music edi