Untitled Document

Physics Demo Number: 150

Approximate

Run Time: 10 min

Sound Waves Displayed on Science Workshop Interface

Demo Description

A sound sensor is attached to a Science Work Shop 750 Interface and then into the lecture hall PC via a USB port.

Running the saved activity for 'sound_scope.ds' gives one a scope reading of the sounds produced , along with a FFT display of the sound waves.

Scientific Principles

Spectral analysis of sound waves is carried out by the Data Studio software and displayed.

Equipment

Pasco Sound Sensor
Science Workshop 750 Interface
Tuning Forks and Organ Pipes

Equipment Location

Kit (150) on [D-1-4].
Kit (150) on [D-1-4].
On Shelf [D-1-4].

Instructions

The first photo shows the Pasco sound sensor attached to the Science Workshop 750 Interface, which in turn is attached to a USB port of the Lecture Hall PC.

The second photo shows tuning forks and organ pipes to provide sound sources.

The sensor is setup to display in oscilloscope mode on the Lecture Hall Interface when the Data Studio software is run and the activity file named below is chosen.

The third photo shows a view of the screen for the scope in action per activity file

'' C:\program files \data studio\physics\sound_scope.ds'' .

Note that the file sets up not only a scope screen but also a FFT display for the signal.

The scope output is on the bottom in the above photo and not too impressive.

However the FFT gives nice sharp component frequency readouts.