Audio analyzer adds logic display
-- Test & Measurement World, 6/22/2009 9:38:00 AM
The APx585 audio analyzer from Audio Precision APxV2.4 software adds two new metadata monitors for HDMI audio. One monitor decodes and displays an entire HDMI audio InfoFrame that includes current N and CTS values, HDCP state, audio layout and A/V mute condition. The second monitor displays the channel status and user bits information embedded in IEC60958/AES3-format audio. Metadata editor panels enable you to override default metadata settings and set channel status information and HDMI Audio InfoFrame data to any value. You can use APxV2.4 software to test an HDMI audio device for both valid and invalid settings. Its HDMI metadata recorder display can plot multiple metadata fields in real time, similar to a logic analyzer. It can simultaneously display up to 15 fields, which provides the details of metadata information when you hot-swap an HDMI device.
You can download the beta release of APxV2.4 from Audio Precision at http://ap.com/beta.
HDMI audio devices need rigorous tests
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