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Articles Tagged Measurement

  • Thursday, January 05, 2017
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    Ken DeLoria 01/05/17 01:03 PM,
    Over the years many have debated the relative merits of “looking at screen traces” on an analyzer versus using human hearing to determine how a loudspeaker, or an entire system, actually performs. While both practices are of course valid, it’s extremely difficult for the human ear to detect, characterize, and correct small deviations in frequency and phase response, and even harder to characterize driver distortion in a meaningful manner. Likewise, the ear is often stymied when attempting to typify transient… View this story
    Filed in: AVFeatureBlogStudy HallAVDigitalLoudspeakerMeasurementSignalSystem

  • Wednesday, January 04, 2017
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    Bob McCarthy 01/04/17 07:54 AM,
    Editor’s Note: Follow the links to check out part 1, part 2, and part 3 of this series. The analyzer is at the core of a measurement system. The manufacturers of laboratory test equipment design their products to be adaptable to a wide variety of scientific applications. Their working assumption is that individual users will add the peripheral devices required for their application. The laboratory analyzer needed a lot of help to be ready for the down and dirty of… View this story
    Filed in: Live SoundFeatureStudy HallAVEducationEngineerMeasurementSound ReinforcementSystemTechnician

  • Monday, December 19, 2016
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    Merlijn van Veen 12/19/16 11:59 AM,
    Courtesy of Merlijn van Veen.   Why does a specification like “We need a sound system capable of delivering full range 103 dB(A) of clear and undistorted sound at the front of house position” make me scratch my head? Because, typically the mix doesn’t exhibit an A-weighted spectrum. Even as a precautionary measure to make sure the sound system is capable of handling the show, this remains a questionable specification. Never mind that it doesn’t mention an integration time (average)… View this story
    Filed in: Live SoundFeatureStudy HallTrainingBusinessConcertEducationEngineerInstallationLine ArrayLoudspeakerMeasurementSound ReinforcementSubwooferSystem

  • Wednesday, December 14, 2016
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    PSW Staff 12/14/16 01:27 PM,
    Editor’s Note: Here’s an interesting thread from the PSW Live Audio Board (LAB) forums. It’s lightly edited for grammar and formatting. Enjoy. Posted by Jason I’d like to get some opinions on standard front of house DB restrictions. I’m going from a smaller PA where I didn’t really need to enforce a dB/SPL limit to a new rig that can easily outperform the small rig. I’m in a downtown outdoor environment and we have brand new high-end residential towers just… View this story
    Filed in: Live SoundFeatureOpinionBusinessConcertEngineerMeasurementSound Reinforcement

  • Tuesday, December 13, 2016
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    Dennis A. Bohn 12/13/16 01:03 PM,
    This article is provided by Rane Corporation.   Objectively comparing pro audio signal processing products is often impossible. Missing on too many data sheets are the conditions used to obtain the published data. Audio specifications come with conditions. Tests are not performed in a vacuum with random parameters. They are conducted using rigorous procedures and the conditions must be stated along with the test results. To understand the conditions, you must first understand the tests. This article introduces the classic… View this story
    Filed in: AVFeatureBlogStudy HallAVMeasurementProcessorSignalSound Reinforcement

  • 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



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