Speech Analyzer

1. Basic introduction to
Speech Analyzer
Cristina González Rico

2. Speech Analyzer
It is a program used in acoustic phonetics.
This field investigates properties of speech
such as the amplitude of the waveform, its
duration, frequency, frequency spectrum,
and its relation to other branches of
linguistics.

3. Speech Analyzer
This program helps the researcher to:
•Perform frequency, frequency
spectrum analysis.
•Modify playback speed to assist with
perception and mimicry of sounds.
•Perform duration measurements.

4. How to install Speech
Analyzer
•Speech Analyzer is available on the webpage: http://
www.sil.org/computing/sa/sa_download.htm
(Full Install version which includes Microsoft .NET 2.0)
•Once you have downloaded it into your computer,
open the *.exe file which will unzip a folder called
“Speech Analyzer 3.0.1 with .NET”.
•After that, open the setup.exe file that is included in
that folder.
•Then, follow the instructions described by the
installation wizard.

5. Basic introduction to Speech
Analyzer
•Starting Speech Analyzer.
•Opening an audio file.
•Recording your own audio file.
•Playing the audio file.

6. Starting Speech Analyzer
To start Speech Analyzer, you can go to the taskbar, click
Start, Programs (or All Programs), SIL Software, Speech
Analyzer, and click Speech Analyzer.


Or you can go to the desktop and double-click the Speech
Analyzer icon.

7. Starting Speech Analyzer
To start making your study, you can:
•Open a file located on your
computer.
•Record one file yourself with Speech
Analyzer.

8. Opening an audio file
•Once you have opened the
program, a “Start Mode”
window will open. Then,
click on “More Files…” and
another window will
appear.
•Search for the file folder and select
the file. You can choose among
*.wav, *.mp3, *.wma, *.wb (Speech
Analyzer type) files.
•Then, click open.

9. Opening an audio file
•The audio will open so that, you are going to see two different graphs.
The Raw Waveform (above) and the Audio Pitch graph (bellow).
•You can
change to
different kinds
of graphs by
clicking on the
left buttons.

10. Recording your own audio
file
•If what you want is to record the audio file
yourself, you need to go to the toolbar above
and click on the “Record” button ( ). In this
case, you need to have a microphone
connected to your computer.
•Once you have clicked on
that button, a new window
will open.

11. Recording your own audio
file
•In that new window, you just need to
click on the “Rec” button to start
recording yourself.
•Before starting
the recording,
you may want to
change the
volume at which
the audio will be
recorded (circled
in green) or the
volume at which
it will be played
(circled in red).It is necessary to adjust the volume before starting to record.

12. Recording your own audio
file
•When you have finished recording
yourself, you just need to click on
“Done” and the file will open in Speech
Analyzer.
•You may play the file before opening it, and record it any times
you think necessary until you have the recording you want.

13. Recording your own audio
file
•This file will be
also opened in
the Raw
Waveform and
the Audio Pitch
graphs.

14. Playing the audio file
•Now that you have your audio file opened, you can
reproduce it by clicking the “Play” button ( ) in the
toolbar, and the entire audio will play.
•To stop listening the file, just click the “Stop” button ( ) in
the same toolbar.

15. Playing the audio file
•If what you want is to play just a fragment of the audio, use
the cursors (the green line on the left and the red line on the
right) to select the fragment you want to listen.
•Then, click on the toolbar the “Play
Between Cursors” button ( ).

16. Playing the audio file
•You can also play the audio
by clicking on the “Player”
button ( ) in the toolbar.
•It will open a window in
which, apart from playing
the file, you can set its
volume and change its
speed.

17. Basic introduction to Speech
Analyzer
End