UNIVERSITY OF HONG KONG
DEPARTMENT OF ELECTRICAL & ELECTRONIC ENGINEERING
I.
Objective
The purpose of this lab is to get an insight of MATLAB and get familiarized
with the program. The previous exercises provide good practice on the basic functions
of MAT
OXFORD PAPERBACK REFERENCE
A Dictionary of
Law
The most authoritative and up-to-date reference
books for both students and the general reader.
Oxford
Paperback
Reference
ABCof Music
Accounting
Allusions
Archaeology
Architecture
Art and Artists
Art Terms
A
BIOC 2600 Workshop _
Amino acid metabolism
Prof. DKY Shum
1.
Removal of the -amino group of amino acids allows catabolism of the remaining carbon
skeleton for the generation of ATP.
a. Which two amino acids are responsible for vascular transport of -amino
MEDE2500: Biomedical Signals and Linear Systems
Topic 1: Introduction to Signals & Systems
Signals are elements of sensing,
communication, control, and actuation
processes. They convey data,
messages, and information from the
source to the receiver and c
12.1
12.2
12.3
12.4
12.5
12.6
12.7
12.8
12.9
Linear
Time-Invariant
Discrete-Time
Systems
Contents
Introduction and Summary 733
Linear Time-Invariant (LTI) Discrete-Time Systems 734
The UnitSample Response 737
Response of LTI Discrete-Time Systems to P
LTI Difference Equations
MEDE2500: Biomedical Signals and Linear Systems
An N-th order linear difference equation with
constant coefficient is written as
Topic 8: LTI Difference Equations and
Frequency Response of FIR Filters
Prof Paul Y S Cheung
Departme
Concept of 3-Domains
MEDE2500: Biomedical Signals and Linear Systems
Shannon's Theory
Topic 9: z-transform, Poles & Zeros
Move to a new domain where
OPERATIONS are EASIER & FAMILIAR
Use POLYNOMIALS
TRANSFORM both ways
x[n] -> X(z) (into the z domain)
MEDE2500: Biomedical Signals and Linear Systems
FREQUENCY DIAGRAM
Topic 5: Spectrum, Periodic Signals &
Fourier Series
Plot Complex Amplitude vs. Freq
Prof Paul Y S Cheung
Department of Electrical & Electronic Engineering
Room CYC 601C
Email: paul.cheung
MEDE2500: Biomedical Signals and Linear Systems
Discrete Sequences & Notation
Topic 3: Discrete-time Signal & LTI Systems
Continuous-time signal
This&is&angular&measured&in&radians&
Dont&connect&the&dots!&
Prof Paul Y S Cheung
Department of Electrical &
The TMS32010, 1983
MEDE2205: Biomedical Signals and Linear Systems
Topic 7: FIR Filters and Convolution
Prof Paul Y S Cheung
Department of Electrical & Electronic Engineering
Room CYC 601C
Email: paul.cheung@hku.hk
Phone: 2859-2700
(Reference: Nahvi Chap
From Continuous Time to
Discrete
MEDE2500: Biomedical Signals and Linear Systems
Topic 6: Sampling & Reconstruction
Prof Paul Y S Cheung
Department of Electrical & Electronic Engineering
Room CYC 601C
Email: paul.cheung@hku.hk
Phone: 2859-2700
(Referenc
Representation of a Real Number
MEDE2500: Biomedical Signals and Linear Systems
Topic 2: Complex Numbers & Maths Tools
Mathematics are tools for representing
physical systems precisely
Diagrams are often useful for visualization of
mathematical concepts
Superposition of Responses
MEDE2500: Biomedical Signals and Linear Systems
Topic 4: Superposition and Convolution
Example 4.1 An input-output pair to an LTI system
is shown below.
Prof Paul Y S Cheung
Department of Electrical & Electronic Engineering
Room
Title
Building a home-made optical spectrometer.
Objective
To learn the essential skills, especially manual dexterity and systematic problem solving
skills, for optical system alignments.
To build a simple optical spectrometer based on diffraction grati
Task 3 Measure emission spectra of red and blue LED
Replace the red laser diode with a red LED. Connect the LED pins to the power supply
using the crocodile clips. Then, slowly increase the voltage to ~2.1 V to turn on the LED.
You need to move the line
Fig. 22 Absorption spectrum of blue LED with the correct wavelength
Question 1.11: Based on the plots in Question 1.9 and 1.10, plot the spectrum of the absorption
coefficient (y-axis is in the unit of cm-1of the extra virgin olive oil.
)
We know that I =
Fig. 22 Absorption spectrum of blue LED with the correct wavelength
Question 1.11: Based on the plots in Question 1.9 and 1.10, plot the spectrum of the absorption
coefficient (y-axis is in the unit of cm-1of the extra virgin olive oil.
)
We know that I =
Peak wavelength is 465 nm. Maximum value occurs at the 423th position. Using this, we find
relevant wavelengths are 450.31 nm - 494.75 nm.
Fig. 15 Emission spectrum of blue LED with the correct wavelength scale
Question 1.8: Place a piece of white paper t
Question 1.5: What is the spectral resolution of the diffraction grating ( Each pixel on
grating)?
the image sensor has a physical finite size meaning that there is another spectral resolution
associated with the single pixel size ( of the image sensor? W
Fig. 18 Fluorescence observed in the olive oil
Question 1.9: Plot the spectrum with the correct wavelength scale (in nm) in your report.
Fig. 19 Absorption spectrum of blue LED with olive oil
Peak wavelength is 465 nm. Using this, we find relevant wavelen
Fig. 20 Absorption spectrum of blue LED with the correct wavelength
Question 1.10: Plot the spectrum with the correct wavelength scale (in nm) in your report.
Fig. 21 Absorption spectrum of blue LED without olive oil
Peak wavelength is 465 nm. Maximum val
Questions
Question 1.1: Calculate the required incident angle in this configuration.
Ans. Grating Equation is
sin =
m
where, is the groove period of the grating, angle between the diffracted ray and the
is the
gratings
normal
vector the diffraction ord
Task 2 Calibrate Spectrometer
Replace the green LED with the red laser diode. Connect the laser diode pins to the power
supply using the crocodile clips. Then, slowly increase the voltage to ~3.1-3.2 V to turn on
the laser diode.
Connect the image senso