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Monday, November 28, 2011
Peter Janis 11/28/11 02:43 PM,What type of direct (DI) box works best for bass guitar? The answer is easy: it depends. In fact, more than anything else, it depends on the type of bass that the DI is going to be used with. When it comes to signal flow, there are two types of bass guitars: passive and active. The first electric basses, i.e., the original Fender Precision, were passive, and in fact still are today. They employed magnetic pickups to generate the signal… View this story
Filed in: Live Sound • Feature • Poll • Amplifier • Analog • Audio • Interconnect • Mixer • Signal • Sound Reinforcement • System -
Tuesday, June 07, 2011
Chuck McGregor 06/07/11 02:43 PM,Realistically, audio signals at or near the noise floor of a system are not useful because the signal will not be significantly louder than the noise. Therefore, some minimum usable level must be assumed below which the electronic noise is considered objectionable. A signal to noise ratio of 20 dB is considered minimally acceptable for good intelligibility. For a high quality system 30 dB would be a better figure to use. Using this value, the range from this minimum signal… View this story
Filed in: AV • Feature • Poll • Study Hall • Amplifier • AV • Audio • Consoles • Education • Mixer • Sound Reinforcement • System -
Wednesday, April 06, 2011
Jamie Anderson 04/06/11 08:30 AM, 0 CommentsBe sure to see the related article by Jamie entitled “Anatomy Of A System Measurement Rig: Probes, Preamps & Processors” While it may be counter-intuitive, for 99.52367% (roughly speaking) of common applications, the signal quality that our system measurement/analyzer rigs require to produce good measurements is, by pro audio standards, not really that high - particularly when compared to the signal quality demanded for studio recording or even simple listening. What we require from the signal transmission path in our… View this story
Filed in: AV • Feature • Poll • Study Hall • AV • Measurement • Signal • Sound Reinforcement -
Friday, April 01, 2011
Don Davis 04/01/11 10:50 AM, 0 CommentsHarry Nyquist is famed for his work on feedback circuit analysis. His Nyquist plot makes visual simultaneously the following viewpoints of the signal: 1. The real part 2. The imaginary part 3. The magnitude 4. The phase angle between the real and imaginary parts 5. The polarity of the system 6. The causality or non-causality of the time behavior 7. The presence of resonant systems 8. Non-signal synchronization by … View this story
Filed in: AV • Feature • Poll • Study Hall • AV • Audio • Loudspeaker • Measurement • Signal • Sound Reinforcement • System -
Thursday, March 24, 2011
Mike Wireless 03/24/11 02:38 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 • Audio • Microphone • Signal • Stage • System • Wireless -
Monday, February 07, 2011
Andy Wood 02/07/11 06:18 PM,Many professional audio manufacturers are now actively producing their own proprietary network connection and control systems, thus enabling users to create and control products within the audio chain. While not a particularly new concept (Crown, for example, started the trend in the 1990s with the IQ computer control system for its amplifiers), recent years have seen a plethora of new solutions. Therefore, to partner this article on interconnection options, here’s a brief overview on the control and distribution solutions currently… View this story
Filed in: AV • Feature • AV • Digital • Ethernet • Interconnect • Monitoring • Networking • Software • Sound Reinforcement -
Friday, February 04, 2011
Mark Frink 02/04/11 03:09 PM, 0 CommentsThis is the 40th anniversary of Altec Lansing’s passive third-octave “continuous” equalizer that began modern sound system equalization. It didn’t start as a graphic equalizer, but rather, was three rows of eight knobs on third octave centers. A companion third-octave real-time analyzer, three rows of eight VU meters, provided a means to measure a sound system. Subsequent Altec EQs replaced the knobs with a row of sliders, earning the name “graphic” because their positions provide a graphic display of the… View this story
Filed in: Live Sound • Feature • Processor • Sound Reinforcement • System -
Thursday, February 03, 2011
Peter Janis 02/03/11 03:12 PM, 1 CommentElectronic keyboards, the start of it all. Right from the beginning of modern concert sound, DI boxes have played an essential role in getting the sound from the stage to the PA system. Probably the most iconic “direct” instrument of all was the Fender Rhodes. Harold Rhodes started developing the idea as far back as the 1950s, but it was in 1970 that the Rhodes Stage piano took the concert stage bringing the first “portable” keyboard to market. The original… View this story
Filed in: Live Sound • Feature • Poll • Audio • Interconnect • Mixer • Signal • Sound Reinforcement • System -
Wednesday, January 19, 2011
Bruce Bartlett 01/19/11 03:30 PM, 0 CommentsThis article is provided by Bartlett Microphones. You patch in a piece of audio equipment, and there it is: HUM! This annoying sound is a common occurrence in sound systems. Hum is an unwanted 60 Hz tone—50 Hz in Europe—maybe with harmonics. If the harmonics are especially strong, the hum becomes an edgy buzz. Your sound system also might be plagued by RFI (Radio Frequency Interference). It’s heard as buzzing, clicks, radio programs, or “hash” in the audio signal.… View this story
Filed in: Recording • Feature • Poll • Analog • Audio • Digital • Installation • Interconnect • Mixer • Power • Signal • Studio • System -
Thursday, January 13, 2011
PSW Staff 01/13/11 08:15 AM, 0 CommentsTransAudio Group has introduced the new Drawmer 4x4R Active Signal Splitter at this year’s NAMM show. The 4x4R offers four inputs, each switchable between a mic and line. Each of four input sections offers a six LED meter, 48v phantom switch, 66 dB of mic gain and a “listen” function to monitor any of the four input sections through the front panel headphone amp. In addition, each input section can be linked to the adjacent input section offering four different… View this story
Filed in: Live Sound • News • Poll • Product • Analog • Audio • Interconnect • Mixer • Signal • Stage • System
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