/*
Code to draw histogram of depth image from kinect using OpenCV and libfreenect
depthImg is a single channel 8 bit image, each pixel will have a value between
0-255
0 is closest and 255 is farthest
Kinect returns 11 bit depth image which we are scaling
1. The autocorrelation function for a real-valued stable sequence x[n] is defined as
cxx[n] = .][][
=
+
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knxkx
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Cxx (z) = X(z) X(z
-1
).
Determine the region of convergence for Cxx (z).
b) Suppose that x[n] = a
n
Mehryar Mohri
Speech Recognition
Courant Institute of Mathematical Sciences
Project December 02, 2012
Project report due: December 14, 2012
Project presentation: December 17, 2012
The objective of this project is to learn a weighted transducer for spellin
DELAY FUNCTIONS
delayint - This is the simplest and fastest of the delay functions. It applies a delay (or
set of delays) to the input signal matrix by substituting the signal samples into the
output array with an offset corresponding to the delay. Sub-sa
1. What is the solution to the difference equation y [n] = K y[n-1] with initial condition y[0] = 1
and y[-1] = 0?Next, find the ROC of z-transform of your solution for y[n]. K 1.
y[n] = K
n
Y(Z) =
1
1
1
Kz
The z-transform converges outside of a circle o
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VOICE RECOGNITION: INTO THE FUTURE
Many newspapers, magazines, and technology demonstrations are featuring voice
recognition as the wave of the future. But, is voice recognition really new?
HISTORICAL PERSPECTIVES ON VOICE RECOGNITION
People have been abl
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Mehryar Mohri
Speech Recognition
Courant Institute of Mathematical Sciences
Homework assignment 1
September 28, 2012
Due: October 8, 2012
A. Regular expressions
Let = cfw_a, b. Give regular expressions describing the following languages:
1. The set of str
Mehryar Mohri
Speech Recognition
Courant Institute of Mathematical Sciences
Homework assignment 2
October 09, 2012
Due: October 22, 2012
A. Pronunciation dictionaries
The following is a sample of a pronunciation dictionary. The phonemic transcription as w
Mehryar Mohri
Speech Recognition
Courant Institute of Mathematical Sciences
Homework assignment 3
November 15, 2012
Due: November 30, 2012
A. n-gram models
For most of the questions of this homework, it is recommended that you use the
GRM library and FSM
Processing Functions:
flattap - This function creates a tapered window that is flat in the center and tapered
on the ends with a Hann window. This is especially useful if processing with an FFT
and correlating later as in the case of the whitening or Phas
Open Source Tools Assignment 1
Due: Wednesday, October 3, 2012 at 11:59pm
Overview
Sincewe'reinthemiddleofelectionseason,we'lluseUNIXtoolstobecomearmchairpoliticalanalysts.
Asyoumayknow,thepresidentialelectionisatwostageprocess:eachstateintheUSholdssepar
Open Source Tools Assignment 2
Due: Monday, October 22, 2012 before class
Overview
Continuingwithelectionseasondata,we'lluseUNIXtoolstoturnoutattentiontothesenateraces. The
websitehttp:/www.electoralvote.comhaspollingdataforeachofthesenatecontestsonthe
p
The following example demonstrate the usage of the Enum and List traits :
from traits.api import HasTraits, Str, Float, Range, Enum, List
from traitsui.api import View, Item
class IrrigationArea(HasTraits):
name = Str
surface = Float(desc='Surface [ha]')
Midterm Information
The midterm exam is October 29, 2012 (in class). The topics covered on the exam will
include everything we have discussed in class to date.
You may bring the recommended texts for the course, the lecture slides, and personal
notes. You
What is a package?
A'package'containsasetofbinariesforaparticularprogram.OntheUbuntusystemsusedintheCOMP8440lab,thesepackages
normallyhaveafilenameendingin'.deb'.
NormalusersofUbuntusystemswouldusuallyinstallpackagesusingthe'packagemanager'ofthesystem.Th
Sample Questions
1. Under what circumstances can two processes have the same
a - process id?
b - parent process id?
c - process group id?
2. Why should you never specify setuid permissions and write
permissions for other on the same file? Please give an e