New Exciting Dimensions in Audio Brought to You in audioXpress June 2018

May 9 2018, 10:00
In this June 2018 edition, audioXpress covers a wide range of topics related to the latest audio technologies. Our cover highlights an exclusive article on MPEG-H Audio, written by Stefan Meltzer, Technology Consultant for the Fraunhofer Institute for Integrated Circuits (IIS), one of the world's leading application-oriented research institutions. Following multiple articles published online by audioXpress detailing the development of new MPEG-H audio applications, and a magazine article explaining the technology, this month Meltzer explains how the latest efforts lead to the development of a new MPEG-H audio soundbar reference design and new efficient methods for 3D audio rendering.
Also on the cutting-edge of current audio industry trends, Jon Schorah, Creative Director, Nugen Audio, discusses “Mixing and Mastering for Today's Music Streaming Services,” and explains what you should know about delivering music to Spotify, Apple Music, TIDAL, and other platforms.
This month, we also bring you a very interesting article providing an expert perspective by Ofer Elyakim, Chief Executive Officer, DSP Group, on “Engineering Voice-Enabled Smart Gadgets.” As one of the leading vendors in semiconductor solutions with an extensive experience in enabling voice a variety of new consumer electronics devices, using its open audio/voice DSP platform, Elyakim discusses how DSP Group addresses solutions for implementing voice user interface (VUI) experiences.
And with Master Quality Authenticated (MQA) streaming the focus of the industry's attention, this month Ron Tipton continues his measurement experiments and shares what he learned after playing a few MQA tracks from Tidal's music streaming service. He also confirms how MQA high-resolution audio files can be played directly from a newly release CD already supporting the format.
Our interview this month is with Robert Oliveira, the founder of Hearing Components, responsible for inventing the Comply Foam special memory foam tips that have improved the experience of using in-ear headphones for millions of consumers globally. A serial inventor and biochemist, Robert Oliveira worked at 3M for 18 years, developing products ranging from biochemical diagnostics to surgical instruments. An ear canal expert, he also led a 3M team that developed the world’s first FDA-approved cochlear implant.
And for our DIYers, one of our regular contributors and audio electronics expert George Ntanavaras explains how to build a turntable speed measurement device using a microprocessor-controlled device that measures the speed of a turntable's platter. The project is based on the Arduino Uno hardware board and the Arduino software IDE, and uses a micro sensor manufactured by Omron to sense the platter rotation.
Continuing his discussion on "Back EMF Phase Relationships in Moving Coil Loudspeakers," Andy Lewis details some experiments to better understand the phenomena. Having noted that, in a loudspeaker, there are three modes of Back EMF generation - below, at, and above resonance - inductive, resistive, or capacitive, respectively - he now performs simple “thought experiments,” in order to make qualitative observations about the activity of a moving-coil driver in the region of its resonance.
In his Sound Control column, Richard Honeycutt writes about Stereo Listening. In this article he covers the topic from the acoustical, electroacoustical, and pychoacoustical perspective, because as he writes, "Our experience of sound is necessarily subjective, but knowing the history of the science of stereophonic sound can help us to make intelligent decisions about our listening spaces and equipment."
Another of our audio electronics experts and reputed tube amplifier builder, Gerhard Haas, continues to share what he knows about output transformers, probably the most important component of a tube amplifier.
Finally, in his column about everything tubes, Honeycutt writes about “The Evolution of Tone Controls in Tube Amplifiers.”
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