Home | Business News | Browse by Publication | T | Test & Measurement World

Generate a swept sine in LabView.

Publication: Test & Measurement World
Publication Date: 01-FEB-09 		Format: Online
Delivery: Immediate Online Access

Article Excerpt
By Sean McPeak, University of California, San Diego

Test audio devices by producing a signal on a data-acquisition card.

Swept sine waves let you test a device over a wide frequency range. To implement a swept sine wave with a multifunction data-acquisition card, you need to generate the data points and send them to the card. You can create a swept sine function in National Instruments' LabView with just one VI (virtual instrument) that can control start and stop frequencies, sample rate, and sweep duration. Using the signal, I tested an acoustic transducer used in a research project for measuring wave propagation in the open ocean.

The LabView VI (Figure 1 ) calculates an array of numbers that represent the swept sine wave at each sample point as the frequency increases or decreases. To...

View this article FREE - Now for a Limited Time, try Goliath Business News
Free for 3 Days!



More articles from Test & Measurement World
IEEE 1588 moves into new fields., February 01, 2009
How to untangle test complexity., February 01, 2009

Looking for additional articles?
Search our database of over 3 million articles.

Looking for more in-depth information on this industry?
Search our complete database of Industry & Market reports by text, subject, publication name or publication date.

About Goliath
Whether you're looking for sales prospects, competitive information, company analysis or best practices in managing your organization, Goliath can help you meet your business needs.

Our extensive business information databases empower business professionals with both the breadth and depth of credible, authoritative information they need to support their business goals. Whether it be strategic planning, sales prospecting, company research or defining management best practices - Goliath is your leading source for accurate information.