10-13-2013
I guess I did the analysis manually and hence slipped up.
I agree traditional ngrams work the way you have defined, but I am interested in contextual ngrams in which the frequency of occurrence of a given string is determined by its immediate context.
Since the analysis is at a micro-level and not a macrol-evel, such NGrams can be used for predicting whether a given string complies with the training data and witha few additional tweaks even suggest a valid structure.
I hope I have made the idea clear and why the analysis in terms of context driven Ngrams is slightly different.
Many thanks for your response
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi Guys!!!!!!!!!!!!!!!!!!!!!
can we create or copy directories in perl without using system commands like "mkdir" and "cp"
script needed urgent !!!!!!!!!!!!!!!!!!!!!!!!!!!
cheers,
aajan (7 Replies)
Discussion started by: aajan
7 Replies
2. Shell Programming and Scripting
hi friends,
i want to create an new user in my home directory , only just for checking.
if it is possible, please help me.
thanks (1 Reply)
Discussion started by: praneshbmishra
1 Replies
3. AIX
hi
I am posting this for my friend...
is it possible to create widgets using perl pk module in IBM AIX 5.3?
They dont have a GUI so is it possible to create the above mentioned thing in a CUI?
thanks!
Sathish (1 Reply)
Discussion started by: sathumenon
1 Replies
4. Shell Programming and Scripting
Hi, i have some files in text format and i want to create a file with all the information in the others files, but i don't want copy all the information exactly i just need the information from the fourth line to the end of file
I will try to explain with an example:
file1.txt
abc
abc... (1 Reply)
Discussion started by: romanhr
1 Replies
5. Shell Programming and Scripting
hey gurus!
i m a perl newbie!!
i want to create an empty file and also directory in perl...
how to print a msg if the present working directory has ".db" extension. like in shell
if ] ; then
echo "hello "
i want to do this in perl!!
please help.. (4 Replies)
Discussion started by: tprayush
4 Replies
6. Shell Programming and Scripting
Hi,
I have one file name file.txt
It has the following contents:
#File Contents
StartTime,EndTime,COUNTER1,COUNTER2,COUNTER3
12:13,12:14,0,1,0
The output should be like this:
StartTime: 12:13
ENDTIME: 12:14 (2 Replies)
Discussion started by: vanitham
2 Replies
7. Shell Programming and Scripting
Hi,
I am having an xml file which looks like this:
<Nodes>
<Node>
<Nodename>Student</Nodename>
<Filename>1.txt</filename>
<Node>
<Nodename>Dummy</Nodename>
<Filename>22.txt</filename>
</Node>
</Node>
</Nodes>
The text files will have data like this:
#1.txt... (8 Replies)
Discussion started by: vanitham
8 Replies
8. Programming
Hi,
I have the xml file file this, perl script to create hash<p>
<university>
<name>svu</name>
<location>ravru</location>
<branch>
<electronics>
<student name="xxx" number="12">
<semester number="1"subjects="7" rank="2"/>
</student>
<student name="xxx"... (1 Reply)
Discussion started by: veerubiji
1 Replies
9. Shell Programming and Scripting
Hello,
I have a large data file which contains a huge amount of garbage i.e. words which do not exist in the language. An example will make this clear:
kpaware
nlupset
rrrbring
In other words these words are invalid in English and constitute garbage in the data.
I have identified such... (2 Replies)
Discussion started by: gimley
2 Replies
10. Shell Programming and Scripting
I have created one file that contains all the necessary info in it to create a download link. In each of the lines /results/analysis/output/Home/Auto_user_S5-00580-6-Medexome_67_032/plugin_out/FileExporter_out.67... (8 Replies)
Discussion started by: cmccabe
8 Replies
LEARN ABOUT DEBIAN
numm.spectral-analysis
spectral-analysis(7) Numm Tutorials spectral-analysis(7)
NAME
spectral analysis - perform realtime spectral analysis
SYNOPSIS
numm-run FILE
DESCRIPTION
Frequency makes for a meaningful description of many audio signals. We can use numpy's fourier analysis to compute spectra from the micro-
phone and display the results visually. We will break down the process into smaller parts: baby steps...
First, create and save a skeletal file that moves a line across the screen:
idx = 0
def video_out(a):
global idx
a[:,idx] = 255
idx = (idx + 1) % a.shape[1]
def audio_in(a):
pass
Save this snippet and run it with numm-run.
We will use the numpy.fft module for our analysis. First we define a function to get a particular frequency from the fourier transform:
import numpy as np
def get_freq(fourier, frequency):
freqs = np.fft.fftfreq(len(fourier), 1/44100.0)
nearest = (abs(freqs - frequency)).argmin()
return abs(fourier[nearest])
Next, we hook up this function to audio input from the microphone. A frequency bin is chosen on a log scale for each row on the screen to
display a spectogram. In total:
import numpy as np
idx = 0
recent_audio = np.zeros(4096, np.int16)
recent_video = np.zeros((240,320,3), np.uint8)
freq_bins = np.exp2(np.linspace(np.log2(27000),np.log2(27),240))
def get_freq(fourier, frequency):
freqs = np.fft.fftfreq(len(fourier), 1/44100.0)
nearest = (abs(freqs - frequency)).argmin()
return abs(fourier[nearest])
def video_out(a):
global idx
fourier=np.fft.fft(recent_audio)
values =np.array([get_freq(fourier,X) for X in freq_bins])
recent_video[:,idx,1] = (values/10000).clip(0,255)
idx = (idx + 1) % a.shape[1]
a[:] = np.roll(recent_video, -idx, axis=1)
def audio_in(a):
recent_audio[:] = np.roll(recent_audio, len(a))
recent_audio[:len(a)] = a.mean(axis=1)
SEE ALSO
numm-run(1), numm.getting-started(7), numm.one-bit-instrument(7)
numm February 2012 spectral-analysis(7)