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Article: Program turns PC sound card into a function generator.(Statistical Data Included)
- Article from:
- EDN
- Article date:
- September 2, 1999
- Author:
CopyrightCOPYRIGHT 1999 Reed Business Information. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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You can use a low-cost PC sound card as an analog-function generator by controlling the PC with the program "SoundArb." The program generates standard waveforms, noise, and arbitrary waveforms. The program reads arbitrary waveforms from simple ASCII text files consisting of whitespace-separated numbers. You can use a program such as Mathcad to create such files. SoundArb provides common triggering modes, such as continuous, one-shot, burst, and toggled. An on-screen "button" serves as the trigger input. The program's user interface is a dialogue-box-style control-panel window. (You can download the self-extracting installation program from EDN's Web site, www.ednmag. com. ...