This page contains a Flash digital edition of a book.

September 2014 l 05 For the latest news WORLD APx555 analyser sets “new standard for testing” Lowest residual THD+N in the world provides audio professionals with “unparalleled insight into their designs”, says Audio Precision The new analyser represents the culmination of 30 years’ experience By Dave Robinson

AUDIO TEST SPECIALIST Audio Precision has announced the availability of the APx555, “the culmination of 30 years of experience” that represents “the most powerful and capable audio test instrument ever developed”.

Based on the modular architecture and powerful software of other members of Audio Precision’s APx family, the 555 is said to deliver “improved measurement accuracy, speed, flexibility, automation and ease-of- use for developers of audio components, equipment and systems”, and will ship next month, October.

“The APx555 represents a lifetime of work in audio test,” says AP co-founder and chief analogue designer, Bruce Hofer. “It pushes analogue circuit design to the edge of understanding and accounts for many previously unseen anomalies, achieving real, measurable performance that exceeds any other.”

“The APx555’s capabilities address a variety of markets but examples of applications

requiring high-performance audio analysis include the design and development of high- end audio ADCs and DACs, professional audio equipment, and leading-edge consumer electronics,” says AP president, Dave Schmoldt.

With a typical residual THD+N of -120dB (conservatively specified at -117dB), the two analogue channels of the APx555 claim to achieve the lowest noise and distortion of any audio analyser ever made, allowing the most sensitive measurements to be made with assurance. Audio Precision says APx555 offers audio developers previously “unachievable “insight into the behaviour of their designs, unimpaired by noise or artifacts from the test system. Also launched is the new APx500 v4.0 software, which provides a multi-mode user interface for the entire APx family of analysers. Developed with system flexibility in mind, the software enables easy switching between two modes. Sequence Mode is the fast and efficient menu of measurements with which APx users worldwide will be familiar. Bench Mode

has been inspired by the former AP flagship SYS-2700 series analyser and delivers real-time feedback of any selected parameters, including waveform scope, FFT spectrum, frequency, THD+N and more. Engineers may choose the mode that best suits their needs with a click of a mouse button. “Bench Mode offers more visibility into real-time behaviours,” says Eric Cline, engineering technician chip developer, Analog Devices. “Being able to see everything at once is a huge deal: distortion, noise, and signal level on meters is incredibly important. It definitely answers my requests, offering the best of both of worlds.”

The APx series uses a modular architecture that supports a wide range of digital I/O, ensuring that as formats change APx options will be ready to support the audio industry. APx500 measurement software is under constant development, says Audio Precision, “keeping pace with new standards and methods in audio testing”. Version 4.0 is available free-of charge to existing customers.

“We are incredibly proud of business

“The APx555 represents a lifetime of work in audio test” Bruce Hofer, Audo Precision

the APx555 and APx500 v4.0 software,” adds Schmoldt. “The APx family covers every audio test need from high-speed production to the most refined and demanding research and development, and it is ready for whatever changes the industry may bring.

“Only AP could deliver such an uncompromising package of world-class performance, flexibility, speed and ease-of-use for the audio professionals we serve.” 

To read our interview with Dave Schmoldt turn to page 58.

Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44  |  Page 45  |  Page 46  |  Page 47  |  Page 48  |  Page 49  |  Page 50  |  Page 51  |  Page 52  |  Page 53  |  Page 54  |  Page 55  |  Page 56  |  Page 57  |  Page 58  |  Page 59  |  Page 60