Four-channel audio analysers
06 January 2009
Audio Precision has unveiled two four-channel models of its APx500 Series audio analyser.
The APx521 and APx526 offer the same performance, high speed and one-click measurements as the APx520 and 525, but with four analogue input channels instead of two. Like the APx525, the APx526 includes a 192K digital I/O. According to the manufacturer, APx521 and APx526 are suitable for testing automotive audio systems, which typically have two analogue inputs and four outputs; often accompanied by some digital I/O.
With the addition of these new models, AP now offers audio engineers and production testers a choice of two, four, eight, or 16 channels, so that they can configure the ideal analyser for their requirements without compromising features or performance.
“When we introduced the two-channel APx models in May, our automotive customers were impressed, but they immediately came back and said they needed four channels,” said Bruce Hofer, Co-founder and Chairman of Audio Precision. “AP has always been very responsive to our customers’ requests, so I’m happy to declare that, true to form, we have provided what was asked for,” he added.
The APx Series of audio analysers are capable of taking 14 measurements in as few as seven seconds. Users can run tests with one click or define sequences of measurements with multiple signal paths, pass/fail limits and automatically generated reports. All models run the same software, allowing for easy sharing of data between colleagues.
For bench testing, APx has real-time signal monitors including residual THD+N in oscilloscope view and a one million point FFT. For production test, there is an extensive API with sample code for programmers working in Visual Basic.NET, C# and LabVIEW.
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