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Articles Tagged Analysis

  • Thursday, July 14, 2016
    loudspeakers
    Stephen Court 07/14/16 06:11 AM,
    Editor’s Note: This article originally appeared in the November/December 2001 issue of Live Sound International magazine. ————————————————————- At the announcement of my children’s birth, the first thing everyone asked was “what did they weigh?” It always struck me as somewhat peculiar. Of all the personal qualities you could discuss, such as the color of the hair, or how healthy they are, weight seems a strange specification. Fancy telling somebody that you have just purchased a new car: “Oh really, what… View this story
    Filed in: Live SoundFeatureStudy HallAVEducationEngineerLine ArrayLoudspeakerMeasurementSound Reinforcement

  • Tuesday, July 12, 2016
    prosoundweb
    Pat Brown 07/12/16 07:50 AM,
      Editor’s Note: Be sure to check out Pat’s related articles on this topic, including Examining FIR Filtering In Sound Reinforcement Systems and Creating & Applying FIR Filters. We live in an age of “bigger is better.” During a recent SynAudCon Forum thread, I suggested that this philosophy is not necessarily true for the length of an FIR filter. As of this writing, the typical filter length supported by DSP is 1024 taps, with some as high as 4096 taps.… View this story
    Filed in: AVFeatureStudy HallDigitalEducationEngineerMeasurementSound Reinforcement

  • Thursday, June 30, 2016
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    Nigel Redmon 06/30/16 12:45 PM,
    This article is provided by EarLevel Engineering.   Here we lay the foundation. We’ll look at analog to digital conversion, and we’ll look at the spectrum of the resulting digital signal. We’ll use that knowledge to help understand the conversion process back to analog. Though we can build real-world converters that work as described, we’re not building practical converters here; we’re interested in the mathematical concepts involved and their relationships to digital signal processing. Analog To Digital Conversion The sampling… View this story
    Filed in: AVFeatureStudy HallAVDigitalDigital Audio WorkstationsEducationMeasurementSoftware

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    Merlijn van Veen 06/30/16 06:13 AM,
    “It turns out that, within very generous tolerances, humans are insensitive to phase shifts. Under carefully contrived circumstances, special signals auditioned in anechoic conditions, or through headphones, people have heard slight differences. However, even these limited results have failed to provide clear evidence of a “preference” for a lack of phase shift. When auditioned in real rooms, these differences disappear…” – Dr. Floyd Toole As Dr. Toole states, a lot of people, including myself, have a hard time detecting phase… View this story
    Filed in: AVFeatureStudy HallAVEducationLoudspeakerMeasurementSound Reinforcement

  • Tuesday, June 28, 2016
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    Mike Sessler 06/28/16 12:00 PM,
    This article is provided by ChurchTechArts.   A while back, I was having a discussion about the sound quality of our monitors with our sax player. He’s a very discriminating guy who really knows sound. If he says he needs 185 cut 3 dB, he needs 185 cut at 3 dB. As we listened to his wedge, it was clear that the sound he was putting out of his horn was not being faithfully reproduced by the wedge. I knew… View this story
    Filed in: Church SoundFeatureStudy HallEngineerLoudspeakerMonitoringSoftwareSound ReinforcementStage

  • Thursday, June 09, 2016
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    Bruce Main 06/09/16 11:34 AM,
    Trap boxes and line arrays get all the attention. And that’s no surprise – they’re big and loud, and dare I say it, glamorous. But the truck rarely rolls without a complement of two-way loudspeakers sporting a 12-inch or 15-inch woofer and a horn. Whether its monitor wedges, drum fill, front fill or just “speakers on sticks,” small 2-way boxes do many of the everyday jobs that make up a typical sound reinforcement day. We take the performance of these… View this story
    Filed in: AVFeatureStudy HallAVEducationEngineerInstallationLoudspeakerMeasurementSound Reinforcement

  • Tuesday, May 31, 2016
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    PSW Staff 05/31/16 09:08 AM,
    Audio Precision announces the introduction of the APx1701 Transducer Test Interface. The system integrates instrument-grade amplifiers and microphone power supplies for designers and production test engineers seeking clear insight into the behavior of their electro-acoustic devices. With a signal-to-noise ratio of 134 dB, the APx1701 provides 20 dB of fixed-gain amplification from DC to 100 kHz. In the frequency range of 10 Hz to 20 kHz, the APx1701’s residual THD+N is ≤ -106 dB (80 kHz BW), and frequency response… View this story
    Filed in: AVNewsProductAVMeasurement

  • Wednesday, May 18, 2016
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    Dana Troxel 05/18/16 10:48 AM,
    This article is provided by Rane Corporation.   Editor’s Note: This article was originally published through The Rane Library in 2005, yet the information is as relevant now as it was then. Acoustic feedback (also referred to as the Larsen effect) has been roaming around sound reinforcement systems for a very long time, and everyone seems to have their own way to tame the feedback lion. Digital signal processing opened up the microphone to some creative solutions, each with its… View this story
    Filed in: AVFeatureBlogStudy HallAVDigitalInstallationInterconnectMeasurementProcessorSignalSound Reinforcement

  • Wednesday, May 04, 2016
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    Mike Rivers 05/04/16 05:48 AM,
    This article is provided by PreSonus.   In May 2014, the VU meter celebrated its 75th birthday. It has served the industry well, and when properly interpreted, it’s still useful. However, today’s digital recording processes have caused us to take a hard look at the usefulness and inadequacy of both the traditional VU meter and its modern replacement, the LED level meter, as tools for signal-level management. The classic VU meter, though relatively rare today (primarily because of cost), has… View this story
    Filed in: RecordingFeatureBlogStudy HallAnalogDigitalDigital Audio WorkstationsEngineerMeasurementMonitoringSignalStudio

  • Thursday, April 28, 2016
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    Nigel Redmon 04/28/16 12:12 PM,
    This article is provided by EarLevel Engineering.   Some terms: The Fast Fourier Transform is an algorithm optimization of the DFT—Discrete Fourier Transform. The “discrete” part just means that it’s an adaptation of the Fourier Transform, a continuous process for the analog world, to make it suitable for the sampled digital world. Most of the discussion here addresses the Fourier Transform and its adaptation to the DFT. When it’s time for you to implement the transform in a program, you’ll… View this story
    Filed in: AVFeatureBlogStudy HallDigitalDigital Audio WorkstationsEducationEngineerMeasurementProcessorSignalSoftware



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