The Gold Line <b>DSP2B</b> is a dedicated meter to measure Speech Intelligibility using OPT STICis intelligibility software option.</p><p>Speech intelligibility is not a physical quantity like Amperes, Volts or Btu's. It is the degree to which we understand spoken language. Speech is not necessarily intelligible simply because it is audible. Everyone has experienced speech signals that are loud enough but overly reverberant, suffer from echoes or distortion and therefore are not understandable. Announcements in airports, train stations and places of worship often suffer from this problem.</p><p><b>Intelligibility</b><br />Intelligibility is measured by sending a test signal through the sound system and into the listening environment. The test signal is an artificial reproduction of a range of modulated sound frequencies important to human speech. The meter measures the received signal, compares it to the signal specification and computes the Modulation Transfer Function (MTF). The MTF is a measure of the change in or distortion of the signal as it passes through the sound system and as it is affected by the listening environment. The MTF is used to compute and display the Speech Transmission Index (STI) on the meter. The meter can convert the STI to a generic Common Intelligibility Scale (CIS), which permits direct comparison to other test methods.</p><p>It should be noted that any "measurements' are actually predictions of voice intelligibility. Subject based test methods can gauge how much of the spoken information is correctly understood by a person or group of persons for that particular test. When properly done, that resulting value is a prediction of how much of the spoken word will be correctly understood by others at some other time. Intelligibility meters have been developed and use a test method that has been correlated with accepted subject based test methods. Therefore, the numbers presented by a meter are also predictions. Still, it is common to refer the results as measurements. This is exactly the same as audibility measurements. The definition of a decibel for sound pressure levels is the ratio of the measured sound pressure level to the threshold of human hearing. That is, zero decibels is the threshold of audibility. However, that threshold is a subjective number determined many years ago by testing a large group of people with "normal" hearing.</p>
The hand-held <strong>XL2</strong> Analyzer is a powerful Sound Level Meter, a professional Acoustic Analyzer and a precision Audio Analyzer all in one instrument. Easy operation and countless applications distinguish this quality Swiss product. Get the job done, on time! The instrument is ready to measure literally seconds after you press the power button. The intuitive navigation and flexible user interface assist in simplifying every task. The XL2 provides an extensive range of measurement functions.</p><p>The XL2 is developed according to user needs, and provides reliable measurement solutions for sound system installations, noise control, architectural acoustics, evacuation systems, live events, quality inspection and occupational health and safety. The best is not always the most expensive. The XL2 Audio and Acoustic Analyzer provides top-class performance with excellent value for money. You will receive an instrument exactly tailored to your needs for less than you expect.</p><p>Focus on your core skills and let the XL2 provide you with the reliable measurement data. This instrument is the benchmark that allows you to be the professional that you are. The robust design and verifiable measurement methods pair to help you perform better. The XL2 is the reference instrument in audio and acoustic measurement.</p><p>The XL2 also comes with the <strong>M4261</strong>, which is a calibrated, omni-directional class 2 measurement microphone running from 48V Phantom power. It shows excellent linearity over a wide dynamic range from 27 dB SPL up to 144 dB SPL.</p><p><b><i>PLEASE NOTE:</b> This product contains Lithium Ion Batteries. Due to FAA regulation this item is restricted to ground transportation in the lower 48 contiguous states and cannot ship to Alaska, Hawaii or Puerto Rico.</i></p>
The Honeywell 16 in. x 24 in. Allergen Plus Pleated Filter is made of a self-supported pleated media. The unique filter construction requires less energy to help you save more money. Its electrostatic charge and large surface area of pleated material improve the efficiency of its dust-holding capacity. Housed in a recyclable, clay-coated, moisture-resistant frame, this filter captures particles as small as 1 micron (in comparison, a human hair is approximately 150 microns in size). This filter is effective against microscopic allergens, bacteria, disintegrated feces, tobacco smoke, insecticide dust, lead dust, mold spores, pollen, pet dander, nuisance dust and dust mite debris.
The ILC103A is a flexible, cost-effective, bi-directional fiber optic transport module for all digital video formats ranging from 19.39 Mb/s to 2.97 Gb/s. The module is user configurable to function as a transmitter, receiver, transceiver, repeater, or 4-channel distribution amplifier.</p><p>The ILC103A and the InfinityLink chassis combine to create the backbone of a video transmission network that can span feet or miles. Using removable SFPs transceivers available in 1310 nm, 1550 nm, and 18 CWDM wavelengths, make the ILC103A the most flexible, easy-to-deploy, and reliable single channel digital video optical transport module ever developed.</p>
The JK Audio Interchange allows remote access to your party-line intercom through JK Audio Innkeeper Series Digital Hybrids. This professional half rack interface provides a four wire audio interface and remote control connection for JK Audio innkeeper LTD, innkeeper 1x/1rx, or innkeeper 2 Digital Hybrids for POTS lines, or JK Audio AutoHybrid IP2 for VoIP lines. The front panel headset interface jack allows easy connection of your mobile phone, tablet, or computer allowing remote access through a wireless phone or conferencing app.</p><p><b>Listen-Always Design</b><br />The Listen-Always design allows both the phone hybrid / 4-wire connection and the mobile phone headset interface to monitor the intercom just like any other belt pack. Listen mode is a high impedance bridging tap on the intercom line. Talk mode is enabled via a front panel switch, either Off, On, or Auto. Auto follows the phone hybrid Auto-Answer mode.</p><p><b>Conference</b><br />The Innkeeper 2 or AutoHybrid IP2 conference feature allows two callers to share one intercom connection. Alternatively, the included cables allow Line 1 and Line 2 of the Innkeeper 2 or AutoHybrid IP2 to be connected to two separate Interchange units, allowing connection to separate intercom loops.</p>
The Mighty Max Battery Box is designed for group U1 batteries. Designed to effectively collect battery acid, allows adequate ventilation, secures and locks the lid to the base, and prevents accidental contact of underground battery terminals. Designed for rugged environments; impact resistant down to -20 degrees Fahrenheit, withstands acid, gas, oil and other contaminants, and immune to UV exposure. Heavy-duty grade battery box for automotive, marine, lawn and garden and more; designed for a single group U1 battery. Compact design; features reinforced handles to prevent cracking during relocation and ventilation holes for releasing battery gases. Keeps your battery safe; limits water entry, effectively collects battery acid, allows adequate ventilation, and protects against accidental contact of battery terminals. Certified and tested; meets United States Coast Guard USCG Code of Federal Regulations 183.420 and American Boat and Yacht Council ABYC E-10.7 specifications.