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Analysis software tests playback-only audio gear

Posted: 15 Feb 2006 ?? ?Print Version ?Bookmark and Share

Keywords:Alex Mendelsohn? Audio Precision? QuickTest? audio analyzer?

Here's news of software that permits you to effectively use audio analyzers to test MP3 players, CD players and other personal audio equipment. Sales of such personal audio gear is forecast to double or even quadruple in the next five years, so testing is shaping up as a crucial competitive differentiator.

Addressing that need, audio test-and-measurement supplier Audio Precision Inc. now offers its QuickTest application to enable the company's audio analyzers to test playback-only devices. But, there's a two-fold challenge facing manufacturers.

For one thing, playback-only devices lack audio inputs that makes it easier to take proper measurements. And, quality assurance testing on the production line needs to be completed quicklywithout requiring training or programming to acquire data and interpret results.

Audio Precision's QuickTest application is a macro that launches a simplified interface for Audio Precision ATS-2 and 2700 series audio analyzers. The software automatically measures the performance of devices by playing a proprietary so-called multi-tone.

Using these instruments, results for DC offset, output level, distortion, frequency response, phase deviation, noise, and crosstalk are displayed on-screen against pre-defined Pass/Fail limits. Measurements are all saved in a file for subsequent analysis, too.

Rapid testing
In use, Audio Precision says a single device can be tested in under 30s, compared to two or more minutes with other approaches. "With so many new models coming out so fast, users need the accuracy of our equipment on the production line, without dedicating one of their engineers to testing all day," notes Daniel Knighten, head of Audio Precision's Technical Support.

- Alex Mendelsohn

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