PRAAT

nostalgicisolatedSoftware and s/w Development

Nov 4, 2013 (3 years and 1 month ago)

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PRAAT

1

Group Members


Satish

Singh

Avinash

Sharma

Mayur

Vithlani

Dipin

Shetty



Project Guide

Prof.
Namrata

Gharat


2

PRAAT

INTRODUCTION

PRAAT is Dutch for Talk.

Developees
-
Pual

Boresma

& David
Weenik

Written in C & C++.

“Phonetic Analysis”

Speech Synthesis, Articulatory Synthesis.

View End Print Aspects of the Language.

3

Speech

Anaylsis

4

Spectral Analysis (Spectrogram)

Pitch
Analysis

Formant
Anaylsis

Intensity
Anaylsis

Analyzing
Voice
Breaks

Cochleagram

Excitation Pattern

Visual Representation

Sonograms, Spectral Waterfalls,

Voiceprints or
Voicegrams
.

Identify Spoken Words Phonetically,

Analyze calls of animals.

2D Graph of Time v/s Frequencies.

Higher the Pitch, Darker the line.

3
rd

Dimension as Amplitude




Spectrogram

5

2D


Spectrogram

3D


Spectrogram

6

Pitch Analysis :


Praat

can be used to analyze the Pitch of the sound
signal.

Formant Analysis :


Formants are special feature of
Praat
. They are
basically small red Contours denoted as a Function of
a Time.

Cochleagram

:


Creates a time
-
frequency representation of the input
signal.


Analyzing Voice Breaks:
Praat

extensively analyzes
voice breaks, jitters and
Shammers
.

7

SIGNAL PROCESSING

8

o
e.g. signals are derived from input sound within praat

o
Derived signals
might
converted to
signal
objects and

thus be saved to file


ANNOTATION


Always bound to time


Several levels are not


related to each other

9

Scripting


S
imple



scripting language.


All actions from Windows


and Editors can be
pasted

from history to a script


(text editor).


These commands can be


edited

and extended by


new commands.


It is
easy to repeat
a set


of commands with new


parameter without using


the graphical interface.



10

THANK YOU

11