The purpose of this lab is to familiarize students with the DSP development workstation in the signal processing lab by examining sampling, analysis, and reconstruction of continuous-time signals. Specifically, we will first look at sampling/reconstruction of continuous-time signals. We will then examine time- and frequency-domain displays. Finally, we will examine the importance of sampling frequency and its effects on aliasing.
Dsp workstation hardware list&Setup
Hardware: dell dimension 4550 pc with a pentium 4
microprocessor
Runs software to design/implement digital filters
Controls data acquisition and analysis
Communicates with the DSP board and/or soundcard
Edits/assembles/downloads code for the DSP chip on the DSP
board
National instruments speedy-33
A self-contained, high-performance,
programmable DSP board for signal processing applications. TheSPEEDY-33 comes equipped with a Texas Instruments DSP for high
speed DSP calculations and Analog to Digital (A/D) and Digital toAnalog (D/A) converters for interaction with the outside
world.
Specifications of the
NI SPEEDY-33 are as follows:
Eight memory-mapped LED’s and eight memory-mapped general
purpose switch inputs
Serial Port, CompactFlash interface
National Instruments Speedy 33
Condenser microphone.
Personal headphone set with individual
volume control.
Black 3 prong headphone booster.
Audio cable to go from the computer sound
card to the microphone.
Male to male adapter cable.
Alternative option to NI Speedy 33:
Texas instruments 6711 dsk
Digital Signal Processing Board with PCM3003 Audio Daughter Card
The DSP board is responsible for the
high-speed DSP calculations and the daughter card controls the A/Dand D/A conversion between the DSP board and the outside
world.
Specifications of the DSP board and daughter card are as
follows:
16-bit stereo audio codec with two on-board microphones. A
lowpass anti-aliasing filter at the input channel with a fixedcutoff frequency = 24 kHz
Software:
The software used in the lab is
National Instruments
LabVIEW DSP Module ; a block diagram-based
graphical programming package for digital signal processing thatwill be used for: data acquisition, time domain data display,
frequency domain calculation and display, filter implementation,convolution and correlation calculations, speech/signal modeling,
and real-time filtering. Using LabVIEW DSP Module in conjunctionwith the LabVIEW Digital Filter Design Toolkit, the DSP board and
the rest of the lab equipment will not only allow students toperform data acquisition, analysis, and filtering, it will also
give them the ability to listen to the filtered output.
Questions & Answers
A golfer on a fairway is 70 m away from the green, which sits below the level of the fairway by 20 m. If the golfer hits the ball at an angle of 40° with an initial speed of 20 m/s, how close to the green does she come?
A mouse of mass 200 g falls 100 m down a vertical mine shaft and lands at the bottom with a speed of 8.0 m/s. During its fall, how much work is done on the mouse by air resistance
Chemistry is a branch of science that deals with the study of matter,it composition,it structure and the changes it undergoes
Adjei
please, I'm a physics student and I need help in physics
Adjanou
chemistry could also be understood like the sexual attraction/repulsion of the male and female elements. the reaction varies depending on the energy differences of each given gender. + masculine -female.
Pedro
A ball is thrown straight up.it passes a 2.0m high window 7.50 m off the ground on it path up and takes 1.30 s to go past the window.what was the ball initial velocity
2. A sled plus passenger with total mass 50 kg is pulled 20 m across the snow (0.20) at constant velocity by a force directed 25° above the horizontal. Calculate (a) the work of the applied force, (b) the work of friction, and (c) the total work.
you have been hired as an espert witness in a court case involving an automobile accident. the accident involved car A of mass 1500kg which crashed into stationary car B of mass 1100kg. the driver of car A applied his brakes 15 m before he skidded and crashed into car B. after the collision, car A s
can someone explain to me, an ignorant high school student, why the trend of the graph doesn't follow the fact that the higher frequency a sound wave is, the more power it is, hence, making me think the phons output would follow this general trend?
Nevermind i just realied that the graph is the phons output for a person with normal hearing and not just the phons output of the sound waves power, I should read the entire thing next time
Joseph
Follow up question, does anyone know where I can find a graph that accuretly depicts the actual relative "power" output of sound over its frequency instead of just humans hearing
Joseph
"Generation of electrical energy from sound energy | IEEE Conference Publication | IEEE Xplore" ***ieeexplore.ieee.org/document/7150687?reload=true
A string is 3.00 m long with a mass of 5.00 g. The string is held taut with a tension of 500.00 N applied to the string. A pulse is sent down the string. How long does it take the pulse to travel the 3.00 m of the string?
