AES 131st Convention photo gallery Audio DesignLine Blog 10/26/2011 Post a comment A photo gallery from the show floor of the recent 131st AES Convention in NYC includes photos of everything from exhibits and audio product demos to audio publications and even an electromechanical Rastafarian!
TECH TRENDS: Front-end voice activation improves auto safety Design How-To 10/20/2011 7 comments The real problem for drivers is distractions, and the desire for additional productivity or entertainment that creates them. Distractions can be reduced through voice user interfaces to control the car without looking at buttons, and without having to touch them. Front-end voice activation is the next step in improving user interfaces.
A measurement approach for IQ offset and imbalance of LTE mobile devices Design How-To 10/13/2011 Post a comment Imperfect analog front-ends of mobile devices cause transmit signals to be non-ideal. Typically, the signal processing for inphase and quadrature (IQ) components is likewise affected. On the one hand, the undesirable zero-offsets of both digital-to-analog converters lead to the IQ offset, and on the other hand, the IQ imbalance originates from an imperfect up-conversion of the baseband signal.
Options for simulating wideband signals Design How-To 10/11/2011 Post a comment The need to take baseband signals and modulate them onto higher frequency carriers is fundamental for both the design and evaluation of communication and radar systems. How do we go about modulating and then upconverting wideband signals to their operational carrier frequencies for simulation?
E.T. phone home? Blog 10/5/2011 2 comments It’s said that for any sufficiently complex product, 80 percent of the users use only 20 percent of its features. I’d be willing to wager that’s true for Keithley Instruments’ products and plenty of other test and measurement instruments as well. Only problem is, how can I collect on that bet?
As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.
January 2016 Cartoon Caption ContestBob's punishment for missing his deadline was to be tied to his chair tantalizingly close to a disconnected cable, with one hand superglued to his desk and another to his chin, while the pages from his wall calendar were slowly torn away.122 comments