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Articles Tagged Signal

  • Friday, May 01, 2015
    image
    Bruce Bartlett 05/01/15 02:30 PM,
    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. RFI is caused by CB transmitters, computers, lightning,… View this story
    Filed in: RecordingFeaturePollProductionAudioAnalogDigitalInstallationInterconnectMixerPowerSignalStudioSystem

  • Thursday, April 16, 2015
    instruments
    Bobby Owsinski 04/16/15 02:13 PM,
    This article is provided by Bobby Owsinski.   As any electric string instrument player knows, there are a number of different types of pickups, and within each category there’s a tremendous variation in possible tone. This excerpt from The Ultimate Guitar Tone Handbook explains the nine factors that affect how a pickup sounds. The next time you’re in the market for one, keep these in mind so you can better tailor the pickup to your needs. ———————————————- Just like most… View this story
    Filed in: RecordingFeatureBlogStudy HallAnalogInterconnectMixerProcessorSignalStudio

  • Monday, February 23, 2015
    waveform
    Bobby Owsinski 02/23/15 03:02 PM,
    This article is provided by Bobby Owsinski.   One might say that we need another audio format like we need a hole in the head, but here’s a new one that actually makes some sense. The good people at high-end Meridian Audio have come up with an interesting way to pack a lossless encode into an MP3 container. The new format is called MQA (Master Quality Authenticated) and is backwards compatible with any player that can play a standard MP3… View this story
    Filed in: RecordingFeatureBlogStudy HallBusinessDigitalMeasurementProcessorSignalStudio

  • Thursday, September 11, 2014
    prosoundweb
    PSW Staff 09/11/14 11:13 AM,
    There’s some interesting research going on regarding the ability to capture sound via video of common items in a room, such as a bag of potato chips or a house plant. The project is a joint effort between MIT, Microsoft and Adobe. As the brief on YouTube notes: “When sound hits an object, it causes small vibrations of the object’s surface. We show how, using only high-speed video of the object, we can extract those minute vibrations and partially recover… View this story
    Filed in: Live SoundRecordingNewsBlogVideoEngineerMeasurementRemoteSignalSound ReinforcementStudioTechnician

  • Monday, August 04, 2014
    prosoundweb
    Pat Brown 08/04/14 03:38 PM,
    The eyes and ears do not always agree when it comes to sound quality. (Related article here.) If making acoustic measurements is so difficult, why bother? Why not tune the system based solely on listening? Because there are several very good reasons for including our eyes in the system tuning process! We humans base our concept of reality upon the evidence presented by the five senses to the brain. Our concept of “blue sky” or “green grass” is the result… View this story
    Filed in: AVFeatureBlogStudy HallAVEngineerLoudspeakerMeasurementProcessorSignalSound Reinforcement

  • Friday, March 21, 2014
    cable
    Victor Brown 03/21/14 01:51 PM,
    Cable selection presents two primary challenges: myriad choices and overall quality. I’ve explored these challenges and have defined six factors that can help point you in the right direction. These factors include appearance, durability, flexibility, sonics, conductivity and shielding. Let’s have a look. Appearance Understand the difference between the look of quality—like shiny gold-plated connector housings—and actual quality construction and materials. A primary problem arises when assumptions are made that the materials inside a cable housing are as fancy as… View this story
    Filed in: AVFeatureBlogStudy HallAVInterconnectLoudspeakerSignalSound ReinforcementStudio

  • Friday, November 01, 2013
    image
    Don Davis 11/01/13 04:58 PM,
    Harry 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: AVFeatureBlogStudy HallAVLoudspeakerMeasurementSignalSound ReinforcementSystem

  • Friday, August 30, 2013
    signal path quality
    Jamie Anderson 08/30/13 02:21 PM,
    Editor’s Note: Be 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 percent (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… View this story
    Filed in: AVFeatureBlogStudy HallAVMeasurementProcessorSignalSound Reinforcement

  • Tuesday, March 13, 2012
    church sound
    Chris Huff 03/13/12 08:50 AM,
    This article is provided by Behind The Mixer.   Growing up in a one hundred year-old home, I learned how to fix plumbing problems.  One lesson was tracing all the pipes in the basement so I could tell which pipes had fresh water and which ones carried sewage.  You might say it was my first exposure to signal flow. Signal flow is the flow of the audio signal from the sources of input to the places of output, from sound-to-loudspeaker,… View this story
    Filed in: Church SoundFeaturePollStudy HallConsolesMixerSignalSound Reinforcement

  • Monday, February 07, 2011
    image
    Andy Wood 02/07/11 05:18 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: AVFeatureAVDigitalEthernetInterconnectMonitoringNetworkingSoftwareSound Reinforcement