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All Measurement Posts

  • Monday, April 21, 2014
    live sound
    Karl Winkler 04/21/14 09:46 AM,
    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 post
    Filed in: Live SoundFeatureBlogOpinionStudy HallAmplifierAnalogDigitalEngineerMeasurementSignalSound Reinforcement

  • soundcraft
    PSW Staff 04/21/14 07:12 AM,
    Sepura Plc, a designer and manufacturer of digital mobile radio products for public safety, industrial, commercial and military applications, recently implemented a Harman Soundcraft Si Expression 1 digital console at its Cambridge, UK faclities to improve and streamline processes during product testing stages. The Si Expression 1 is situated next to an acoustic testing chamber with a head and torso simulator, to test against specifications in typical usage scenarios, including background noise testing using surround sound. This system is set… View this post
    Filed in: AVLive SoundRecordingNewsAVConsolesDigitalMeasurementMixerSignal

  • Friday, April 18, 2014
    audio metering
    PSW Staff 04/18/14 01:24 PM,
    Provided by Sweetwater.   Q: My studio is outfitted with a DAW as well as a fairly large amount of outboard equipment, and it always delivers fairly good results. However, every once in a while there’s some weird distortion, and I’ll see a clip or something on one of the 20 different meters that’s either in the DAW or on the outboard. Is there some kind of hierarchy to these meters? A: A situation where you’re using multiple pieces of… View this post
    Filed in: RecordingFeatureBlogStudy HallDigital Audio WorkstationsMeasurementSignalStudio

  • Thursday, April 17, 2014
    dennis bohn
    Dennis A. Bohn 04/17/14 12:17 PM,
    This article is provided by Rane Corporation.   This paper discusses the pitfalls (often subtle) of our industry’s failure to define and standardize what “unity gain” means, and the conditions necessary to measure it. It further discusses how people improperly use one piece of misinformation (impedance matching) to correct for this lack of standardization. All done, without knowing discrepancies exist between different pieces of equipment, and without knowing impedance matching is unnecessary, signal degrading, and wasteful. For me, it began… View this post
    Filed in: AVFeatureBlogStudy HallAmplifierAVInterconnectMeasurementPowerSignalSound Reinforcement

  • Monday, April 14, 2014
    image
    Bobby Owsinski 04/14/14 02:51 PM,
    This article is provided by Bobby Owsinski.   Reverb. It’s use goes through cycles from a lot to almost none, but you’ll usually find at least some reverb-type ambience used in every mix. The problem is that you can’t really tell much of a distinction between the different types of some inexpensive plug-ins or boxes. In case you’re a little fuzzy about the differences between the types of reverb available, here’s a little refresher excerpt from The Mixing Engineer’s Handbook… View this post
    Filed in: RecordingFeatureBlogStudy HallDigital Audio WorkstationsMeasurementProcessorSignalStudio

  • image
    Joan La Roda 04/14/14 09:14 AM,
    FFT-based field measurement systems have made it possible for us to do phase alignment at fixed installations as well as at live events, where every venue demands a different approach. This is particularly important since mid-high boxes are often flown and subwoofers remain on the ground, meaning that phase differences at the listener location can be very significant. Given the interest in the subject, and the remarkable improvement it can bring to a system, it seems like a good idea… View this post
    Filed in: AVFeatureBlogStudy HallAVLine ArrayLoudspeakerMeasurementProcessorSignalSound ReinforcementSubwoofer

  • Thursday, April 10, 2014
    image
    Sam Berkow 04/10/14 02:31 PM,
    If one could listen to only the direct sound of a loudspeaker, the world would be a very different place! Unfortunately, free field listening, where you have no reflections, room modes or ambient noise, is hard to achieve in everyday life, so we listen to loudspeakers in real rooms. The interaction of a loudspeaker system and a room can be very complex to understand, model or measure! One way to measure this interaction is to measure the impulse response of… View this post
    Filed in: AVFeatureBlogStudy HallAVLoudspeakerMeasurementSignalSound Reinforcement

  • Wednesday, April 09, 2014
    line arrays
    Jeff Berryman 04/09/14 01:57 PM,
    This is a discussion of line array high-frequency output capability, and what it might mean to you. The specific quantity we’re looking at is the frequency response at maximum output power for all drivers. This is the maximum acoustic output of the array as a function of frequency. I will call it the power-bandwidth response. Here’s a question: what power bandwidth must line array elements have in order to deliver a flat frequency response to audience seats? Because of the… View this post
    Filed in: AVFeatureBlogStudy HallAVLine ArrayLoudspeakerMeasurementSignalSound Reinforcement

  • Monday, April 07, 2014
    equalizers
    Dennis A. Bohn 04/07/14 08:17 AM,
    This article is provided by Rane Corporation.   You may have heard it said that equalizers are nothing more than glorified tone controls. That’s pretty accurate and helps explain their usefulness and importance. Simply put, equalizers allow you to change the tonal balance of whatever you are controlling. You can increase (boost) or decrease (cut) on a band-by-band basis just the desired frequencies. Equalizers come in all different sizes and shapes, varying greatly in design and complexity. Select from a… View this post
    Filed in: AVFeatureBlogStudy HallAVMeasurementProcessorSound Reinforcement

  • Friday, April 04, 2014
    smaart
    PSW Staff 04/04/14 11:11 AM,
    Smaart version 7.5, offering numerous user-requested improvements as well as some important bug fixes, is now available from the Rational Acoustics website. The v7.5 update, available free for all registered Smaart v.7 users, includes these upgrades: - Added Target Curves - Added Quick Compare (Trace Subtract) to live TF traces - Added Normalize function to Magnitude plots for Transfer Function traces - Added Histogram for displaying “All Bands” data in IR Mode - Added high-pass filter to IR Options -… View this post
    Filed in: AVLive SoundNewsProductAVMeasurementSoftwareSound Reinforcement





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