Below is a demonstration of the AudioPlot ActiveX control from Oregon State University's Science Access Project. Enter an expression in the text box labeled 'Expression'. Pressing 'Enter' will evaluate and plot the expression over a specified range. Your expression needs to be written in terms of a parameter 'x', (i.e. 'x * sin(x)'). An audio representation of the plot will be generated and played. You can step through or replay this sonification by using the attached buttons.. Further below you will find a series of options which control the visual and audio appearance of the function plot. Go ahead and give it a try.
The accessibility of this web demonstration to blind users is strongly dependent on the browser and screen reader combination. We suggest that blind users tab through the demonstration and play the default expression. This is x*sin(x) calculated from -10 to 10 over a 100 point mesh. This is an oscillating function whose oscillation amplitude is greatest near the minimum and maximum x. Users may play the audio plot by pressing space bar on the play button. Move to the next and back buttonds to play one point at a time in the positive and negative x directions respectively.
Return to the expression input box.
Expression evaluator syntax and function summary: Using SAPExpress.
This page demonstrates a few features found in our free Accessible Graphing Calculator. Follow this link for more information, or to download your own copy of our Windows 95/98 Accessible Graphing Calculator.
Caution: The ActiveX controls on this page are under development, use at your own risk. These controls are not digitally signed. If you receive a script error message, it is probably due to the security settings of your web browser. In order to use this page, you need to set your security settings to allow for downloading of unsigned ActiveX controls.
Return to the Science Access Project home page.
This page is the property of
Oregon State Univserity
and the
Science Access Project
Copyright 1998. All rights reserved.