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Articles Tagged Measurement

  • Friday, December 02, 2016
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    PSW Staff 12/02/16 01:21 PM,
    SIR Audio Tools announces the release of SpectrumAnalyzer, a spectrum analyzer plugin which displays the spectral content of your audio material, helping you create a better mix. SpectrumAnalyzer comes in two editions, a free and a full version. SpectrumAnalyzer is available for 32- and 64-bit Mac OS X and Windows in Audio Unit, AAX, VST and VST3 plugin formats. It has a FFT (Fast-Fourier-Transform) and an analog-style (parallel band-pass IIR filter) engine, both of which can run simultaneously. Intelligent peak-detection… View this story
    Filed in: AVNewsProductAVDigitalDigital Audio WorkstationsSoftwareSound ReinforcementStageStudio

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    Pat Brown 12/02/16 11:12 AM,
      It’s all about inputs and outputs (I/O). How do I get an audio signal from one to the other? The ongoing evolution of professional audio has produced a number of viable digital interfaces to complement legacy analog I/O practices. The choices may seem confusing at first, but when you break them down the strengths and weakness of each become apparent. In this overview, I will start with analog since it is familiar to most readers and serves as a… View this story
    Filed in: AVFeatureStudy HallTrainingAnalogAVDigitalEducationEngineerEthernetInstallationInterconnectMeasurementProcessorSignalSystemTechnician

  • Tuesday, November 29, 2016
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    Merlijn van Veen 11/29/16 12:49 PM,
    Many believe that condenser microphones are more sensitive than dynamic microphones (moving coil) and therefore pick up “everything,” e.g., stage wash and noise. Sensitivity, however, is nothing but a constant conversion rate from pressure to voltage and more important, it is distance independent. Contrary to popular belief, it’s not the reason for picking up “everything.” Most condenser mics are indeed more sensitive. A Neumann KMS 105 condenser with a sensitivity spec of 4.5 millivolts at 1 Pascal (4.5 mV/Pa) is… View this story
    Filed in: Live SoundFeatureVideoStudy HallMeasurementMicrophoneSignalSound Reinforcement

  • Tuesday, November 22, 2016
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    Hadi Sumoro & Xian Yu 11/22/16 12:53 PM,
    This article is provided by HX Audio Lab   In the current digital world, audio analyzers with FFT or TDS functions are easily able to show the magnitude and phase response of a loudspeaker. These software analyzers are not expensive and are widely used in live sound, installation and loudspeaker development. Several popular software analyzers are ARTA, Smaart, Systune and EASERA. And there are many others. Phase response is often questioned. Many practitioners use the software functions such as: delay… View this story
    Filed in: AVFeatureStudy HallEducationEngineerLoudspeakerMeasurementSound Reinforcement

  • Monday, November 21, 2016
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    PSW Staff 11/21/16 02:32 PM,
    Rational Acoustics announces the release of the first major version update for the Smaart v8 measurement platform – Smaart v8.1. This release includes many significant feature additions, interface modifications and bug fixes. This free update is recommended for all Smaart v8 users. The primary feature additions include a re-work of data handling, the addition of a multi-spectrum plot view, a built-in program updater, automatic broadband meter configuration based on selected inputs, password protection for the API and the ability to… View this story
    Filed in: AVNewsProductAVDigitalMeasurementSoftwareSound Reinforcement

  • Thursday, November 17, 2016
    synaudcon
    Pat Brown 11/17/16 08:22 AM,
      Adequate signal-to-noise ratio is one of the characteristics of a professionally designed sound reinforcement system. The terms “dynamic range” and “signal-to-noise ratio” are often used interchangeably, but a closer look reveals that they are not exactly the same thing. The dynamic range of a sound system is the difference in level between the highest signal peak that can be reproduced by the system (or device in the system) and the amplitude of the highest spectral component of the noise… View this story
    Filed in: AVFeatureBlogStudy HallAVLoudspeakerMeasurementMicrophoneSignalSound ReinforcementSystem

  • Thursday, November 10, 2016
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    Peter Janis 11/10/16 01:36 PM,
    Editor’s note: This one goes back a few years, but the question remains relevant. I go to a lot of concerts. Most of the time, I arrive at sound check to spend some time talking to the techs and engineers about new gear or problems that need fixing. This is also a source of new product development. Then, if time permits, we usually try to go out for a quick dinner before heading back to the venue for the show.… View this story
    Filed in: Live SoundFeatureBlogStudy HallConcertEngineerLoudspeakerMeasurementMicrophonePowerSound Reinforcement

  • Thursday, October 20, 2016
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    Pat Brown 10/20/16 07:03 AM,
      The most common reference distance for loudspeaker SPL specifications is 1 meter (3.28 feet). The choice is one of convenience – any distance will do. The 1 m reference simplifies distance attenuation calculations by eliminating the division required in the first step:   Loudspeakers must be measured at a distance beyond which the shape of the radiation balloon remains unchanged. The changes are caused by path length differences to different points on the surface of the device. These differences… View this story
    Filed in: AVFeatureBlogStudy HallAVLine ArrayLoudspeakerManufacturerSignalSound Reinforcement

  • Thursday, October 13, 2016
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    Karl Winkler 10/13/16 12:01 PM,
    As with the ever-ongoing debates about “tubes versus transistors,” “analog versus digital” and “Mac versus PC,” there’s not likely to be agreement any time soon about “objective versus subjective” when it comes to sound quality. Extremists in the “Objectivist” camp argue that, “if it can’t be measured, it doesn’t exist” while on the other hand, the “Subjectivist” side firmly backs the idea that “human beings can hear things that can’t be measured.” How often has it been suggested, “use your… View this story
    Filed in: Live SoundFeatureBlogOpinionStudy HallAmplifierAnalogDigitalEngineerMeasurementSignalSound Reinforcement

  • Wednesday, October 05, 2016
    subwoofers
    Pat Brown 10/05/16 07:27 AM,
      Suppose you bought the best subwoofer that money can buy. Its response is amazingly smooth and extends down to 20 Hz. You hook it to your power amplifier with automotive jumper cables, and warn the neighbors to make sure that small children and pets are indoors, because you are about to do some serious low-frequency listening. You fire the system up and insert the DVD test disc, the one with low-frequency sweeps that allow the smoothness of the system’s… View this story
    Filed in: AVFeatureBlogStudy HallAVLoudspeakerMeasurementSignalSubwoofer



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