Geek Files

Only 20 articles will be displayed per page. Click on the numbers below to view more articles

1 2

Business Websites Spread More Malware Than Porn Sites

Website Malware

February 2013

The 2013 Annual security report by network giant Cisco covers amongst several other topics the results of a study into the most common sources of web spread “malware” such as viruses, Trojans, key loggers, etc, on the internet.

find out more ...

Remote Control Of Wireless Microphone Systems

Control Wireless Microphone Systems

October 2012

Over the years we have regularly received requests for methods to remotely control and monitor wireless microphone systems via third party control systems. While possible, previous implementation was fairly rudimentary due to the limited external control available on most products. This has now all changed thanks to the latest generation of network enabled wireless microphone systems enabling close to full remote control via network commands.

find out more ...

So What About The VoIP Card!

October 2012

So I want to connect a VoIP line to my BSS Soundweb London, but you guys don’t make a VoIP card. I can’t do it- right? Wrong, read on...

find out more ...

Digital Clocking In A BSS Soundweb London System

August 2012

A new option has recently been added to BSS Soundweb London DSP devices which allows clocking from or to an external Wordclock.

find out more ...

Pathways To AVB

June 2012

So how do I integrate AVB into an existing system?

find out more ...

Lectern Microphone Techniques Part 2 - Less Is More

Typical Lectern Configuration

September 2011

Following on from my recent article on lectern microphones, a few readers asked questions relating to using pairs of lectern microphones, such as why two? Should they be mixed or switched? And should I reverse “phase” (polarity) on one of the mics for best results?


Seems mic’ing of lecterns is a hot topic, something we have all struggled with at some point in time. So let’s dig a little deeper and examine the issues relating to multiple microphones on lecterns.

find out more ...

Why Lectern Microphones Are The Best Choice For, Well... Lecterns

Shure-MX405

May 2011

At a recent meeting a colleague said to me “Jeff, next time you write an article for the newsletter could you please do something explaining why people should use lectern mics for lecterns rather than hand held mics on a stand?

find out more ...

EASE - Engineering Tool Or Marketing Weapon Of Mass Deception

September 2010

EASE is one of the most misused tools in the Pro Audio industry. As you may know, EASE is a software tool developed to assist engineers with acoustic system designs. However, it fast became an aide to people working in sales, offering EASE plots to support their proposals.

find out more ...

Audio Balancing Issues Explained

December 2009

The adoption by production companies of distributing audio signals via digital systems has many benefits. One of those is isolation of the audio signal from grounding, however this does not negate the requirement for audio signals being correctly balanced in a system. The following article was written by Graham Blyth from Soundcraft, and discusses some of the issues related to balanced audio lines.

find out more ...

The Material That Revolutionised Ribbon Microphones: Roswellite

October 2009

Remember Roswell? You probably associate it with the alleged recovery of alien debris from an object that crashed near Roswell, New Mexico, in 1947. Roswellite™ is the trademarked name of a nano-enabled ribbon material that is used in Shure KSM313 and KSM353 ribbon microphones. Apparently, the development team considered the new ribbon material “out of this world” and gave it a tongue-in-cheek moniker to match.

find out more ...

Amplifier Power Ratings & Other Mysteries Of The Universe Explained - Part 2

September 2009

In last HUBs article entitled “Amplifier Power Ratings & Other Mysteries of the Universe Explained - Part 1” we examined the testing methodology and standards used to obtain and publish power output and mains draw ratings for audio power amplifiers. In this article we will delve further into amplifier power ratings with emphasis on the time duration used and attempt to explain the meaning of “burst” and “continuous” power ratings.

find out more ...

Phantom Power and Bias Voltage: Is There A Difference?

August 2009

Many users of professional audio equipment believe there is no difference between phantom power and bias voltage. Not true! This technical bulletin from Shure explains the differences between phantom and bias, and addresses common misconceptions.

find out more ...

Amplifier Power Ratings & Other Mysteries Of The Universe Explained - Part 1

July 2009

Audio amplifier power ratings have long been a hot topic of debate amongst the professional audio community. Particularly controversial are amplifiers that on paper appear to produce more output power than they draw from the mains supply. This has prompted some sceptics to dispute published specifications based on claims that they defy the laws of physics. In this article I will attempt to explain the operation of such “physics defying” amplifiers and hopefully dispel some common myths in the process.

find out more ...

Acoustic Echo Cancellation - Better Conversations Through Math...

July 2009

As we have probably all experienced from time to time, acoustic echo can turn what should be a simple conversation into something that resembles a dog’s breakfast. In this article we shall embark on an adventure to discover what this nasty thing called acoustic echo is and how acoustic echo cancellers work to combat this not so silent conference call killer…

find out more ...

Much Ado About Filters

June 2009

With the recent introduction of the Crown I-Tech-HD series amplifiers, which offer a vastly increased array of filter options, the number of support calls requesting assistance with filter selection has increased significantly. The most common question goes something like this: What do FIR and IIR mean? And where are all the “normal” crossover types?

find out more ...

The History Of The XLR Connector

June 2009

While researching a standard for the ubiquitous XLR connector for a technical standards committee, we come across this document by Ray A Rayburn of Sound First, Boulder CO USA. Rays article traces the evolution of the XLR style connector from its early roots back in 1955 and makes quite interesting reading (well I think it is, but then…)

find out more ...

Sidetone, Sidetone Control and Nulling... What the %#$& is it?

June 2009

As per many of my other articles, I will reinforce the statement once again… Communication products are the glue that holds the production together. But good communications can make even more of a difference. It’s all in the way you set it up.

find out more ...

High-Rise Wireless - What's Wrong With That?!

May 2009

There is a saying in the radio communications industry that “height is might”, meaning (generally) the higher you can position your antenna system the greater the effective range. However this is not necessarily the case with wireless microphone systems. In fact, greater antenna height can often result in reduced performance and additional headaches. Let us investigate issues with wireless microphone systems installed in high rise city office blocks.

find out more ...

Communication Application - What To Choose & When To Use...

April 2009

Communication products for productions are essential these days. They provide the back bone for every successful production, from simple school play to multinational events such as the Olympics! This goes not only for the guys on the ground organising the crew and calling cues, but for the broadcasters filming the live event. In this article we will explore what the options are and when to use them.

find out more ...

Sensitivity, Gain, Power, Volume - Different Words For The Same Thing?

Amplifier Gain

April 2009

Lookout, its soap box time again! In the last issue of Production HUB I vented my frustration on the humble y-combiner lead. A harmless looking device, regularly found in the audio guy’s bag-of-tricks, yet capable of causing serious problems if used incorrectly. This month I wish to tackle a topic with far greater destructive potential: Amplifier gain!

find out more ...

Only 20 articles will be displayed per page. Click on the numbers below to view more articles

1 2

Bookmark and Share