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Thursday, June 07, 2012
Bill Whitlock 06/07/12 03:09 PM,Electromagnetic interference, often referred to as EMI, is a degradation of the performance of a piece of equipment or system caused by electromagnetic radiation. Electromagnetic radiation is the travel of alternating electric and magnetic fields through space at 186,273 miles (about a billion feet) per second, or the speed of light. A wavelength, as shown in Figure 1, is the physical distance traveled by a wave during one cycle. Figure 1: High-frequency magnetic and electric fields travel fogether as a… View this story
Filed in: AV • Feature • Study Hall • AV • Power • Signal • System • Audio -
Monday, December 12, 2011
Tim Vear 12/12/11 02:30 PM,An important consideration in microphone use is acoustic interference, which can occur whenever delayed versions of the same sound are mixed together, acoustically or electrically. With mics, this may happen in several ways: mics of reverse polarity picking up the same sound, multiple mics picking up the same sound from different distances, a single mic picking up multiple reflections of the same sound, or any combination of these. The results are similar in each case, and include audible peaks and… View this story
Filed in: Church Sound • Feature • Poll • Study Hall • Education • Engineer • Microphone • Studio • System • Audio -
Thursday, March 24, 2011
Mike Wireless 03/24/11 01:38 PM,One of the topics that I’ve seen poorly understood, and even deliberately used to mislead people, is the issue of wireless microphone transmitter power and the effects said power has on system performance. Let’s start with the basics: all things being equal, more transmitter power = more range for the system, but not in a linear way. In broad terms, when discussing analog wireless systems, the receiver wants to see a signal from a transmitter that is at least about… View this story
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Filed in: AV • Feature • Blog • Poll • Analog • AV • Microphone • Signal • Stage • System • Wireless • Audio -
Monday, August 31, 2009
PSW Staff 08/31/09 03:10 PM, 0 CommentsARX Systems has announced the addition of the new and unique USB I/O Universal Transformer Isolated USB Interface to its range of precision audio tools. The USB I/O is a true “plug and play” analog-to-digital and digital-to-analog pro audio interface and requires no special driver program installation on Mac OSX, Win XP and Vista. It features transformer isolated audio inputs and outputs, with new USB analog-to-digital and digital-to-analog converter chipsets that are incorporated into the circuit topology, allowing maximum headroom… View this story
Filed in: Live Sound • Recording • Church Sound • Product • AV • Installation • Interconnect • Sound Reinforcement • Stage • Studio • Audio -
Wednesday, August 26, 2009
Mike Wireless 08/26/09 03:38 PM, 1 CommentTwo interesting developments have emerged recently under the heading of “white spaces”. First, if you recall, the FCC authorized the development and eventual marketing of “white space devices” that have now come to be known as TVBDs (TV Band Devices). However, the technical requirements for these devices are quite stringent; specifically, that they must sense other signals and take a lower priority in any given location than existing TV broadcasts and wireless microphones. Microsoft, working with researchers at Harvard University,… View this story
Filed in: Live Sound • Blog • Mike Wireless • Analog • Business • Digital • Education • Engineer • Installation • Microphone • Sound Reinforcement • System • Audio -
Thursday, July 30, 2009
PSW Staff 07/30/09 05:12 PM, 0 CommentsReflecting the exponential growth of live sound as an increasingly significant component in the health of the pro audio industry, 127th AES Convention Live Sound Co-Chairs Henry Cohen and Mac Kerr have devised a broad program of critical events designed to keep the “Road Warriors” fully on top of their game. Presentations run the gamut from an assessment of the White Spaces issue to innovations for meeting the increasingly urgent need for compliance with the Green Movement. Live sound programs… View this story
Filed in: Live Sound • Recording • Church Sound • News • Business • Consoles • Digital • Education • Engineer • Measurement • Microphone • Processor • Sound Reinforcement • Technician • Audio -
Friday, July 03, 2009
PSW Staff 07/03/09 12:03 PM, 0 CommentsBased acoustically on the AKG Blue Line Series, the newest addition to AKG’s product line-up, the Architectural Microphone Series (AMS), presents a new wave of customizable possibilities in microphones. AMS was unveiled at 2009 InfoComm in Orlando. AMS allows users to customize the microphone by easily adjusting the length of the gooseneck module as well as selecting various designs for the shape of the capsule housing unit. The self-designed microphone can be personalized with any color as well as a… View this story
Filed in: Live Sound • Church Sound • Product • Installation • Microphone • Sound Reinforcement -
Tuesday, June 30, 2009
Mike Wireless 06/30/09 01:11 PM,So the big day (June 12, formerly February 17, 2009) came and went, and now we have the results of “the change”. For those of you living under a rock for the past 10 years, what has happened is that full-power analog TV broadcasts have ceased in most US markets. At the same time, most of the of spectrum between 698 and 806 MHz, formerly used by TV broadcasts and wireless microphones, now has new owners and is not populated… View this story4 Comments
Filed in: Live Sound • Blog • Mike Wireless • Concert • Education • Engineer • Installation • Microphone • Software • Sound Reinforcement • System • Audio -
Thursday, June 25, 2009
PSW Staff 06/25/09 07:01 AM, 0 CommentsAt 2009 InfoComm, Astatic introduced the new Astatic 1600VP, a unique continuously-variable pattern condenser hanging microphone system with remote polar control and an anti-rotational positioning mount. Designed to hang from ceilings, the 1600VP is highly effective in the recording and sound reinforcement of choirs, instruments and ambient micing, in addition to government, institutional and business applications. A low-profile carbon fiber boom (MB-1) is available for microphone stand mounting. The remote variable polar pattern control uses a two-conductor shielded cable (maximum… View this story
Filed in: Live Sound • Recording • Church Sound • Product • Microphone • Sound Reinforcement • Studio -
Tuesday, June 23, 2009
PSW Staff 06/23/09 11:51 AM, 0 CommentsShure has enhanced its KSM series of microphones with two new ribbon models - the KSM353 and KSM313 - intended for capturing world-class vocal and instrumental performances, both in the studio and on stage. “Ribbon microphones have always been prized for their warm sound quality, but their delicate nature has limited their use to controlled conditions,” said Scott Sullivan, Shure’s Senior Director of Global Product Management. “We knew there was demand for ribbon microphones that could be used in a… View this story
Filed in: Live Sound • Recording • Product • Slideshow • Microphone • Sound Reinforcement • Studio • Audio
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