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Audio phase: Robin Palmer asks why it is wobbly?

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Phase meters and audio vectorscopes are to be found on most test kit involved with audio monitoring. This is important because left/right audio correlation problems between the channels will distort the stereo ‘image’ and could degrade mono compatibility. If left and right phase should ever be inverted, any centered identical audio would be cancell...

Submitted by Robin Palmer

Published 01 June 2013

Evolving the industry audio monitoring systems

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With respect to monitoring, particularly for multiplatform content delivery, how can our facility straddle the divide between baseband and file-based signals?The media industry as a whole is moving toward multiplatform content delivery. This shift includes and affects not only traditional broadcasters and new media outlets, but the content creators...

Submitted by Don Bird

Published 01 June 2013

Cost effective transport of video over long distances

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The transportation of live video and audio feeds over the internet has become a widely accepted technique. This has led to a bewildering number of products and techniques becoming available from simple PC plug in cards to very sophisticated encoder / decoder sets. Of course each of these has its own place in the market, as there can be no one size...

Submitted by John Golding

Published 01 May 2013

The cushion quotient

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I have just been to a conference organised by the Mobile Data Association. I was very grateful to the organisers for the invitation, as it is the sort of thing that appeals to me: some of the top analysts in the industry throwing out statistics and predictions. Of course, at this sort of conference you get a lot more about where we are than where w...

Submitted by Bob Pank#

Published 01 December 2012

Tally systems and Confidence Audio Monitoring for Sports...

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Q: Because sports broadcast tends to originate from OB vehicles, having the capability to connect a tally system between trucks is vital. How do you connect your TallyMan controllers together to create an integrated, seamless tally system?A: When two OB trucks are engaged in the live broadcast of a major sports event, one truck will act as the main...

Submitted by Bob Pank#

Published 01 September 2012

NETWORKING AND THIRD PARTY CONTROL

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Since the advent of digital technologies, the way audio and video is controlled and transported around broadcast facilities has been constantly evolving in the search for greater efficiencies and improved workflows. Today, broadcasters are demanding more and more versatility and integration from their equipment, and in turn, the capabilities now av...

Submitted by Bob Pank#

Published 01 June 2012

Ask the experts......Intercoms for outside broadcasts

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Ask the experts – intercoms for outside broadcastsBarry Spencer, Trilogy CommunicationsI just assume outside broadcast trucks come with an intercom. Why do I need to even think about it?The first big point is that an outside broadcast is not just a control room on wheels. It is an event. And that means communications beyond the truck. Within the pr...

Submitted by Kieron Seth#

Published 01 April 2012

Meeting the Demands Of The Market

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Much has been said about audio loudness and there can be few people in broadcast who are unaware of the new legislation being introduced by various countries to control this problem. The UK and Italy have already set limits on loudness levels and in 2010 the US introduced the Commercial Advertisement Loudness Mitigation Act (CALM), making it illega...

Submitted by Bob Pank#

Published 01 July 2011

Whats new in audio

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The NAB show is not the first event that comes to mind for pro-audio kit but in fact rivals any audio-specific exhibition on the planet. The following is a summary of significant new sound equipment seen during a tour of this year's exhibits. AKG's C 544 L head-worn microphone is designed to be worn by gymnastics or (almost the same thing in some c...

Submitted by Bob Pank#

Published 01 June 2011

Working With Audio Signals

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For most of the past century, working with audio signals was a very straightforward process. The audio information was converted to electrical signals in the form of a varying voltage between the two conductors in a pair (balanced) or between a conductor and the ground reference (unbalanced). The bandwidth, frequency response, distortion and noise...

Submitted by Kieron Seth#

Published 01 June 2011

Its a MADI World

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At this year’s NAB Show in Las Vegas, 3D solutions were still a hot topic — but one emerging technology threatened to steal the show. In fact, the rapid growth of devices that support the Multichannel Audio Digital Interface (MADI) has more potential for simplifying broadcasting operations than perhaps anything else. But what exactly is MADI and wh...

Submitted by Kieron Seth#

Published 01 June 2011

Challenging Loudness

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Numerous definitions of the word loudness exist but to understand the relevance of the word in relation to the world of broadcast sound perhaps the statement that loudness is “our perceived impression of the intensity, frequency, and duration of a sound” fits closest. We all watch TV with the remote control close at hand; not just to change channel...

Submitted by Bob Pank#

Published 01 March 2011

tv-bay IBC2010 double takes

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Tv-bay Double Takes..!Acquisition For-A VFC-7000 Camera HD Variable Frame Rate CameraASA1800 Sensitivity, Native 720x1280 resolution with inbuilt up-convert to 1920x1080 and will output at 50 or 59.94 frame rates. 120 - 700 Frames per second recording speed. Two HD-SDI outputs enabling live and recordings to be viewed simultaneously. Standard onboa...

Submitted by Bob Pank#

Published 01 November 2010

Safekeeping for the Future

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A CIRENCESTER audio archival engineering company has just finished working on a set of African recordings that are more than a century old. Paul Turney, of Sirensound Digital, was commissioned to digitize the wax cylinders for future safekeeping of the audio. Wax cylinders were patented by Thomas Edison and were one of the earliest form of sound re...

Submitted by Bob Pank#

Published 01 October 2010

Modern Tools for Test and Measurement in Post Production

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Today’s post-production facilities and practically the entire global multimedia industry, face a common issue: how to effectively eliminate the notorious problem of inconsistent loudness being pushed to the absolute limits. Whether it’s a television commercial break or a big-screen movie, there is simply no question, the signal flow should still be...

Submitted by Bob Pank#

Published 01 September 2010