Report from AES NYC 2011
Audio.TST departs from its usual format to bring you a report from the AES (Audio Engineering Society) convention held last weekend in New York City. We’ll resume with a regular issue next month.
AES NYC was a fantastic show. It was a pleasure to see so many of our customers and talk about the new ideas they’re working on and how to test them.
At the show, AP announced an HDMI option for its two channel APx520 and APx525 analyzers. Having HDMI as an option for the APx525 family meets the needs of our smartphone and set-top box customers, who require multiple types of digital I/O but only two analog channels. The APx520 and APx525 with HDMI began shipping this week.
Highlighting the capabilities of APx analyzers to test smartphones and tablets, we've also published a new Technote, “Testing Smartphones and Tablets: Audio Outputs”. The technote looks at how to connect to and test the sound quality of a typical smartphone or tablet that has analog, acoustic, serial digital, Bluetooth, and HDMI signal paths.
AP had two presenters at AES this year. AP Chairman Bruce Hofer gave a talk at the Product Design Track on "Building Analog in the 2010s" (more below), which was especially relevant, considering the record number of pure analog (and even tube) mic preamps, mixing consoles, and other gear on display. Technical Support Engineer Krithika Rajagopal co-presented a paper on which she was first author: “Automatic Soundscape Classification via Comparative Psychometrics and Machine Learning” (available soon in the AES E-library with the other convention papers). Both sessions were very well attended and lots of good questions were asked.
Product Design Track: Building Analog in the 2010’s
AP was very happy to sponsor the Product Design Track along with our friends at THAT Corporation. Bruce’s 90 minute presentation, “Building Analog in the 2010s,” drew from his more than 40 years of experience to focus in-depth on five select topics: Models of non-linearity, passive component quality (“perhaps one of the most significant factors in analog design”), op-amp selection, noise in analog circuits, and circuit layout considerations. You may download a PDF version of the slides for Building Analog in the 2010s from ap.com—it’s a must read for anyone interested in keeping the lost art of analog design alive well into the 21st century.
Press Release: APx525 Family Adds HDMI
AUDIO PRECISION GETS SMART IN STEREO: HDMI AVAILABLE ON 2-CHANNEL ANALYZERS
AP adds HDMI to the APx525 family of audio analyzers to match the needs of smartphone and set-top box designers.
APx525 analyzer with Bluetooth, Digital Serial, and HDMI (download hi-res version).
The Javits Center, New York, USA, October 21, 2011: Audio Precision, the recognized standard in audio test, today announced the availability of their advanced HDMI I/O option for their APx525 family of two and four channel audio analyzers.
The HDMI option for APx analyzers had previously been available only for the eight-channel APx585. The new configuration is designed to match the needs of smartphone, tablet, and set-top box manufacturers who require digital multichannel interfaces such as HDMI, but only have need for two channels of analog audio. The APx525 family now supports HDMI, Bluetooth, and the digital serial option, allowing comprehensive test of all inputs and outputs of modern audio devices.
The APx HDMI option allows engineers to measure HDMI audio quality and audio format. All standard audio measurements are available. In addition to generating linear / PCM audio streams, APx can stream lossless formats (such Dolby TrueHD™ or dts-HD Master Audio™) and compressed formats (such as Dolby Digital™ and dts Digital Surround™) from pre-encoded audio test files. APx’s HDMI sink EDID can also be edited to test a source’s response.
“APx’s advanced HDMI testing capability has been fundamental to the improvement of A/V receiver design over the past four years,” said Tom Williams, VP of Sales and Marketing at Audio Precision. “Now HDMI is becoming standard on a new class of audio devices, and consumers expect high-definition performance there as well. An APx525 with HDMI, Bluetooth, and the Digital Serial interface gives smartphone and set-top box designers everything they need to meet the challenge.”
For more information on the HDMI option, see /products/apx/hdmi.
About Audio Precision
Audio Precision is the recognized standard in audio test. Since 1984, AP has offered high performance audio analyzer instruments and applications to help engineers worldwide design and manufacture all types of consumer, professional, and industrial audio products. For more information, visit ap.com.
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© 2011 Audio Precision, Inc.