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All Measurement Posts

  • Wednesday, March 21, 2012
    recording
    Matthew Weiss 03/21/12 04:54 PM,
    This article is provided by the Pro Audio Files.   We spend a great deal of time considering individual sounds in a space. We prescribe attributes to the instruments and the players in order to organize our thoughts about the sounds and how they blend. We may often say a singer is “mid-rangy,” a snare is “ringy,” or perhaps the acoustic guitar is “warm.” We do the same for microphones, pre-amps, compressors, and what have you. It is surprising how… View this post
    Filed in: RecordingFeaturePollStudy HallMeasurementProcessorStudio

  • Saturday, March 17, 2012
    loudspeakers
    Pat Brown 03/17/12 01:27 PM,
    A loudspeaker array is a collection of loudspeakers that is assembled to achieve a coverage pattern that cannot be achieved with a single device. Arrays are most commonly implemented to achieve a wide horizontal coverage pattern from a position on or above the stage. The “perfect” array would be a collection of loudspeakers whose radiation pattern was indistinguishable from a single (hypothetical) device that provided the needed pattern for the audience area. Many attempts have been made to solve the… View this post
    Filed in: AVFeaturePollStudy HallAVLoudspeakerMeasurementSound Reinforcement

  • Tuesday, March 13, 2012
    rational acoustics
    PSW Staff 03/13/12 10:19 AM,
    Rational Acoustics has announced the addition of Chris Tsanjoures in the role of applications supports specialist, where he will oversee all application support functions, including the creation and dissemination of customer support materials regarding application and use of the company’s products.  Tsanjoures will also provide application-based customer phone, e-mail and web support, work with partner companies to create integrated Smaart Measurement Technology-based solutions, and provide tradeshow support and external training support. Tsanjoures holds a BA in Music Production & Technology… View this post
    Filed in: AVLive SoundChurch SoundNewsPollAVBusinessManufacturerMeasurementAudio

  • Monday, March 12, 2012
    loudspeakers
    John Murray 03/12/12 05:02 PM,
    Since the early 1980s, the term “time alignment” has been tossed around pretty freely, and with dubious degrees of accuracy. Note, however, that this was far from the first time the concept was noticed. Indeed, the engineers who provided the loudspeakers for the first “talkie” film, Al Jolson’s The Jazz Singer, noticed that the “taps” of the tap dancing scenes came out of the high-frequency (HF) horn and folded-horn low-frequency (LF) woofer at different times. Ever since, designers have been… View this post
    Filed in: Live SoundFeatureStudy HallLoudspeakerMeasurementProcessorSignal

  • Wednesday, March 07, 2012
    recording
    PSW Staff 03/07/12 04:39 PM,
    An interesting “audio related” item we ran across on YouTube today: “This recording of the 2011 Japanese earthquake was taken near the coastline of Japan between Fukushima Daiichi (the nuclear reactor site) and Tokyo. The initial blast of sound is the 9.0 mainshock. “As the earth’s plates slipped dozens of meters into new positions, aftershocks occurred. They are indicated by “pop” noises immediately following the mainshock sound. These plate adjustments will likely continue for years. “Georgia Tech Associate Professor Zhigang… View this post
    Filed in: AVLive SoundRecordingChurch SoundNewsBlogVideoMeasurementSignalAudio

  • Tuesday, March 06, 2012
    qsc
    Gerry Tschetter 03/06/12 01:15 PM,
    The terms +/-3 dB and -6 dB are frequently (and erroneously) used interchangeably to characterize the frequency response of a loudspeaker system. This has led to understandable confusion among consumers who may believe that a +/-3 dB specification is more rigorous than a -6 dB specification. The purpose of this document is to explain the meaning of both specifications as they are commonly used (or misused) in pro audio today, and to provide a basis for comparing loudspeakers with differing… View this post
    Filed in: AVFeaturePollStudy HallAVLine ArrayLoudspeakerMeasurement

  • Monday, February 20, 2012
    image
    Pat Brown 02/20/12 01:03 PM,
    If acoustic parameters sometimes seem difficult to grasp, this practical example should help clarify at least one of them, the Limiting Distance, DL. This is a parameter associated with reverberant spaces, such as gyms and churches with little absorption. Remember that in such spaces there will exist a reverberant sound field LR, that is uniform throughout the space, as well as specific reflections that are not. If a loudspeaker or other acoustic source is used to excite the space, there… View this post
    Filed in: AVFeaturePollStudy HallAVEducationEngineerInstallationMeasurementSound ReinforcementSystemAudio

  • Monday, February 13, 2012
    optimization
    Adam Shulman 02/13/12 06:46 AM,
    The term optimization stems from the French word optimisme, meaning “the greatest good” or “the best.” Historically, the sound reinforcement industry has employed the term in the context of sound system tuning or alignment, but it was not until recently that the use of the term optimization has taken on a more literal and formalized meaning. It’s important to be familiar with the concept of numerical optimization (most simply, the determination of input values to obtain a function’s maximum or… View this post
    Filed in: Live SoundFeaturePollMeasurementProcessorSound Reinforcement

  • Friday, February 10, 2012
    church sound
    Jon Baumgartner 02/10/12 01:48 PM,
    On more than one occasion, I’ve been called to a church to inspect the facility for the purpose of designing a new sound system. Upon arrival, I discover that the church has perfectly adequate audio components that have been tuned and balanced perfectly inadequately. It never fails - when I inform the owner that the system is fine and simply needs to be properly tuned, I get the response that the church has just paid somebody several hundred dollars to… View this post
    Filed in: Church SoundFeaturePollStudy HallConsolesInstallationLoudspeakerMeasurementProcessorSound Reinforcement

  • rational acoustics
    PSW Staff 02/10/12 01:47 PM,
    Rational Acoustics has introduced a new version of its phantom powered pink noise generator. Called the Noise Stick II, it offers a 25 dB increase in sensitivity from a device that is the same size as the original, and also has new, blue LED on the endcap that provides visual confirmation that the unit is seeing phantom power and thus, operational. The Noise Stick II is hand-built in the USA exclusively for Rational Acoustics, outfitted with hand-matched transistors and 1-percent… View this post
    Filed in: AVLive SoundChurch SoundNewsPollMeasurementSound Reinforcement





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