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Q: We've been having problems with interference from BlackBerrys with our wireless mics. Is there any solution for this, other than asking for them to be turned off?
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Electronic speech intelligibility testing involves introducing a test signal into the room, and analyzing the signal at the listening position with an electronic measurement instrument. Here's how to measure speech intelligibility using the Rapid Speech Transmission Index (RaSTI).
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Most professional loudspeaker and amplifier manufacturers have transitioned to the Speakon NL4FC connector for speaker level connections because its locking mechanism makes it safe, reliable, and physically secure.
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Is there an affordable method available for processing multiple live video feeds from surveillance cameras onto a videowall without overloading the processor or having to purchase an expensive processor?
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Ideally, all of a video signal's components (R, G, B, and sync) should arrive at a display at exactly the same time. When they don't — as a result of passing through multi-pair cable — the condition is termed “skew.” While a certain amount of skew usually isn't detrimental, the effect becomes more...
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There are two ways to safely mount displays to these types of walls.
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I'm a systems integrator and have been searching for a "box" that can take in multiple component video signals and output them to a single video display. Are there currently any products like this on the market?
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Full Compass, which also offers AV sales, repair, and rental services, recently launched its GearCast Series of podcasts, focusing on AV systems and industry issues.
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PlayNetwork finalized its merger with Seattle-based AV and networking service provider Crows Nest Entertainment in July, allowing the company to offer its in-store digital video networks with Crows Nest's advertising sales services.
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Sanju Khatri, principal analyst, projection and large-screen displays, iSuppli, an El Segundo, CA-based electronics industry research firm. iSuppli provides research on interdependent parts of the electronics supply chain, including component and application markets, emerging technologies...
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Paul Gulick, founder and CEO, Clarity Visual Systems The Wilsonville, OR-based digital visual messaging solutions company announced the acquisition of French digital display manufacturer Synelec Telecom Multimedia S.A. in May.
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Ingram Micro is a Santa Ana, CA-based technology distributor and technology sales, marketing, and logistics firm. The company entered the digital signage market earlier this year.
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APPLE RECENTLY announced its newest iPod, which will play music videos and TV shows. Granted, image resolution is low (320x240 pixels), and it will take 15 to 20 minutes over a broadband connection to download a one-hour program.
Price continues to remain a driving factor in this channel.
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Are gray screens the key to better contrast and grayscale rendering?
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I'VE BEEN working on a multi-part training program that covers, the “A to Z” of video signal interfacing and distribution. Sounds pretty mundane, doesn't it? After all, we simply select the appropriate interfaces, cable them up, turn on the power, and move on, right?
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Ironically, as cathode-ray tube (CRT) imaging continues its slow march into oblivion, it's still the most accurate way to reproduce color of any electronic imaging technology.
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Those following flat-panel display news coming out of Asia these days must have their heads spinning. Companies jump in and out of plasma manufacturing.
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No doubt by now you've heard about the tragedy in Waco, TX, where a pastor performing a baptism was electrocuted when he reached for a microphone while standing in water. This incident highlights the importance for us as an industry to reflect on how such a thing could happen, and how to keep it...
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One sign that pro AV is becoming mainstream can be found on page one of the Sept. 21, 2005, edition of The Wall Street Journal.
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When you consider that the majority of AV systems integration firms are businesses with less than $5 million in annual revenue, you get the sense that ours is an industry with many niche players. In fact, this is a fairly good description of the pro AV industry in the United States, and given the...
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At the InfoComm Manufacturer's Forum in June, it only took two audience questions to realize that the audience wasn't receiving what the manufacturers were saying with 100 percent signal transfer. In fact, the “impedance mismatch” was rather dramatic.
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One of the more interesting idiosyncrasies of our industry is that the person who buys our equipment is often not the same person who actually uses it. We spend lots of resources selling, explaining, and training — but is the right person getting the message?
While the ultimate goal in videoconferencing is good interactivity between near- and far-end rooms, one common lighting design problem can be summed up in a question that's remained constant throughout the evolution of videoconferencing technology: How can you provide good, comfortable lighting to...
At a time when many AV firms are finding it difficult to grow at all, the last three years for Tampa, FL-based Audio Visual Innovations Inc., have been nothing short of phenomenal. According to the company's executive management team, AVI will bring in about $200 million this year, an increase from...
Systems integrators continue to be challenged by potential clients wowed by AV technology, only to be humbled by price.
Contrary to popular belief, successfully streaming AV over IP networks isn't so much a question of bandwidth as it is one of identifying bottlenecks in advance.
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The fascinating world of forensic AV includes a whole niche of specialists who analyze audio and video recordings using cutting-edge AV technology, revealing clues that help solve investigations.
A decade after its last revision, the new MasterFormat released last November now includes more divisions relating to pro AV than ever. But has it been successful? Here's a look at how AV integrators and consultants are implementing the new document one year later.
Some of the industry's most useful AV calculators designed to make your job easier are available online and don't cost a cent.
Connecting the right cable in the right place is obviously essential for pro AV systems integrators, but choosing the right type of cabling for the job can be just as important. We've all heard the stereotypes, as the fiber versus copper debate has been raging for more than a decade.
For some, AV has always been a passion; for others, it was a job that turned into something more. Either way, it seems that AV workers tend to have a better-than-average chance for a diverse biography than some of their professional peers from other industries.
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Kent Meredith, general manager of United Spirit Arena in Lubbock, TX, and director at large for arenas at the International Association of Assembly Managers (IAAM).
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Pro AV's essential industry guide, with crucial tips for positioning your company to leverage.
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A few years back, I toured the product development area of a major office systems furniture manufacturing facility as part of a campus procurement advisement committee for Cornell University in Ithaca, NY. In the middle of this tour, I noticed something rather striking and somewhat out of place — a...
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What you think you know about control systems may be wrong. Test your knowledge, and pick up some pointers.
Unreasonable expectations, technical hurdles, and security issues have prevented wireless projection from going mainstream. Are we any closer to a solution?
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The Doremi Nugget HD video player is a basic MPEG player for HD and SD content in any format. It plays back any compression bit rate up to 80 Mb/s, 4:2:2, or 4:2:0 without restrictions. It also has a built-in video up/downconverter. It plays back video at computer resolutions, NTSC, PAL, or HD...
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Peer Reviewer: Robert Plant, design engineer, Wild West Electronics, Reno, NV. Wild West Electronics specializes in the design, installation, and service of audio, video, lighting, and automation control systems for commercial, government, and residential applications.
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The NEXUS system has also helped reduce our equipment costs. It replaced the following equipment at WNWC/CATV 6: an eight-channel routing switcher, five SUPER VHS decks, and a DVD player.
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The pad fits into the picture perfectly because of what it can do to make the learning environment interactive. The visual learning experience is accomplished by the large projected image.
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Expandability is the key feature that makes this unit outstanding for specific problems. For example, if a customer needs DSP with four inputs and four outputs to process a stereo mix, a mono recording feed, and a monitor, and later decides to triamp the system and add monitors, that's not a...
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ACT (Anthony Calverley Thompson) Associates is an independent AV design, consulting, training, and project management firm specializing in sound, presentation, and videoconferencing systems in a variety of markets.
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Brian Bednar reviews the JBL VRX932LA line array and VRX918S subwoofer.
The Logical Solutions VIS-3 DVI Extender consists of a transmitter and receiver unit — each of which contains a single ST-type fiber connector and a DVI-D female connector.
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PANASONIC'S PT-DW7000U front DLP projector is the successor to the earlier, low-cost D7500 and D7600 designs.
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Terra indoor/outdoor subwoofer, DVIGear HDMI fiber optic cables, PLUS Vision Corp. of America DLP Projector ...
Sabine DSP audio system processors, Lowell Surge suppressors, Chyron digital signage system ...
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Canon multimedia projectors and visualizer, Hall Research video splitter/switch, JBL in-ceiling loudspeakers ...
A sampling of products to be featured at the 119th AES Convention, October 7-10, in New York.
Ergotron flat-panel mounts, Sennheiser ultra-directional loudspeaker, Lectrosonics audio transmitter ...
Twelve products you absolutely should have seen at InfoComm 2005.
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H&b High-definition plasma displays, Inter-M Americas speaker line tester, dbx Professional Products digital graphic equalizer ...