Audio Precision has introduced the APx585 multichannel audio analyzer with HDMI, claimed to be the industry's first audio analyzer capable of testing HDMI and Blu-ray audio. According to the company, the instrument speeds the measurement of HDMI audio quality on devices such as surround sound receivers, set-top boxes, HDTVs, and DVD and Blu-ray Disc players.
In addition, the device is said to ease troubleshooting of component compatibility and downsampling, downmixing, and transcoding issues by enabling the replacement of the consumer audio devices typically used for such testing with a controlled audio source. The APx HDMI option for the APx585 audio analyzer includes a fully compliant HDMI 1.3A source and sink interface that can generate and analyze test signals in real time on up to eight channels.
In addition to linear PCM audio streams, APx can generate lossless formats such as Dolby TrueHD and dts-HD Master Audio, and compressed formats such as Dolby Digital and dts Digital Surround. All signals are available in 24-bit 48 kHz versions; the linear and lossless tones can also be generated at sample rates up to 192 kHz.
The video signal required for HDMI can be passed through from the user's source, or can be generated by the APx585. Video formats and HDCP encryption can be toggled to test for effect on embedded audio.
A Blu-ray test disc with high-resolution versions of a wide selection of audio test signals for testing Blu-ray Disc players is included with the instrument. Formats on the disc are the same as those supported by the APx generator. The 300+ tones are accessible via video menus.
“The days of jury-rigged HDMI audio testing are over and you can hear the sighs of relief across the world,” said Bruce Hofer, co-founder and Chairman of Audio Precision. “APx will significantly speed up the development cycle and allow a degree of confidence that's only possible with high precision instruments.”
The HDMI option can be ordered with a new APx585 audio analyzer or installed as an upgrade to a current instrument. The first orders are scheduled to ship in mid-summer 2008.
Audio Precision , (503) 627-0832, www.ap.com
APx585 w/HDMI datasheet (PDF)