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Acoustics & Audio Technology News

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Description: GlobalSpec's Acoustics & Audio Technology free eNewsletter covers the field of sound recording, sound reproduction, and sound abatement. The components, materials, and technologies used to generate, manipulate, and measure sound in mobile telecommunications and other devices, and the applications of these components are this free email publication's primary focus.
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GlobalSpec: DirectU2 Acoustics & Audio Technology
April 20, 2009
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Industry Trends & Events . . . Forward to a Friend Forward to a Friend
Good Vibes from Sound Waves

Good Vibes from Sound Waves Lip reading is an effective way for deaf people to interpret what others say. It's especially useful for those that can't use or afford cochlear implants. Unfortunately, it's hard for them to differentiate between some consonants, a good example being "b" vs "p." Enter MIT's Sensory Communication Group researchers who have developed a special device that converts sound into vibrations.

The prototype tactile device solution — either handheld or worn on the back of the neck — provides vibratory input. After the acoustic processing program is perfected, it will be possible to utilize the software in smart phones, which already house a digital signal processor, microphone, and vibrating mechanism.

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Spotlight On . . .
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Piezo Motor Stage / Ultrasonic PiezoMotor

PI (Physik Instrumente) L.P.

Piezo Motor Stage / Ultrasonic PiezoMotor The M-663 Piline™ miniature piezo motor stage is the smallest closed-loop ultrasonic linear piezomotor-driven translation stage with integrated high-precision linear encoder (100 nanometer resolution). It combines the advantages of piezo-motor drives with PI precision micro mechanics.

Learn more about PI (Physik Instrumente) L.P.

5.7 in. Surface Acoustic Wave
Touch Screen Release

Densitron Corp.

5.7 in. Surface Acoustic Wave Touch Screen Release Densitron Corporation breaks the 6 in. touch screen barrier with the introduction of their 5.7 in. Surface Acoustic Wave (SAW) Touch Screen into North American Markets. Industries such as medical equipment and industrial instrument manufactures are looking toward touch screens to enhance the user experience of their products.

Speakers & Amplifiers . . .
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Not Hard to Hear the Snipers

Not Hard to Hear the Snipers One of the new technologies being developed for U.S. troops is Boomerang Warrior, utilizing a microphone, earpiece, and embedded electronics. The shoulder-mounted system ascertains gunfire coordinates and announces the shooter's direction (three o'clock for example) from a soldier's position, distance in meters, and elevation via the earpiece.

Antenna Arrays Empower Emergency Comm

Antenna Arrays Empower Emergency Comm Future emergency communications will be vastly improved thanks to experiments at the U.S. National Institute of Standards and Technology (NIST). There, researchers discovered a hands-on solution for RFI (radio frequency interference) caused by significant masses of reinforced concrete, as occurred in the World Trade Center attacks on 9/11. By using just four randomly placed in-phase transmitting antennas, first responders can significantly boost median signal strength by 2.5x to 4x.

Acoustic Materials . . .
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Heavy NVH Materials Are Out

Heavy NVH Materials Are Out Conventional heavy materials for insulating sound and controlling vibration are out of the picture. Today NVH (noise, vibration, and harshness) engineers are in the search mode for lighter materials to insulate/absorb sound and damp vibrations. Light weight, efficiency, and environmental friendliness are the orders of the day. Toward that end, Ford is downsizing engines from V8s to V6s to I4s, thereby creating a definitive challenge because each possesses a unique NVH signature.

Capacitors Slash Acoustic Noise

Capacitors Slash Acoustic Noise Realizing a minimal 10 dB reduction over typical multilayer ceramic chip capacitors (MLCCs), new low-profile MLCCs reduce acoustic noise generated by DC-DC notebook converters and control circuit capacitors in mobile phone LCD modules. For 1µF models up to a 30dB improvement is evident; for 4.7 to 10µF capacitors, a 10 dB improvement or better is characteristic.

Accent On . . .
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National Semiconductor LMV1088/89
Audio Amps Available at Digi-Key

Digi-Key Corporation

National Semiconductor LMV1088/89 Audio Amps Available at Digi-Key Digi-Key offers National Semiconductor's LMV1088/89 amplifiers that preserve voice signals within 4 cm of a microphone, while rejecting far-field acoustic noise. Part of the Powerwise™ family of energy efficient solutions, both devices consume only 1.1 mA of supply current, while providing superior performance compared to DSP solutions consuming over 10x the power.

Acoustical Curtain Composites

IES2000

Acoustical Curtain Composites Acoustical Composites are products that combine both noise barrier and sound absorber materials. Typically, they offer the most significant overall noise reduction. Acoustical Composites are rated in both "NRC" and "STC" numbers.

Learn more about Inplant Noise Control, div. Inplant Enviro-Systems 2000, Inc.

Signal Measurement & Processing . . .
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How Audio Fingerprinting Works

How Audio Fingerprinting Works If you'd like to understand how audio fingerprinting works, this Maximum PC white paper could be quite apropos. The article explains the basics of audio fingerprint systems, how fast Fourier transfer algorithms are used, databases, and more. Today, the technology has trickled down to consumers who can hear a song piped into a store, record a snippet on a smartphone, ID it in a database via open-source software, and then perhaps purchase it with another click or two.

Adaptive Equalization Ensures Quality Sound

Adaptive Equalization Ensures Quality Sound Targeted for music and paging systems, adaptive equalization technology delivers high-quality signals over long cable runs covering up to one million square feet on multiple floors. Designed to maximize a networked sound masking system and musical page interface (shown), the adaptive equalization automatically measures and compensates for frequency line loss, delivering a flat frequency response throughout the system via an automatically adjusting DSP that brings the frequency band up to the optimal level.

Mobile & Handheld Devices . . .
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1000+% Growth for Mobile Broadband

1000+% Growth for Mobile Broadband Two billion mobile broadband users in the next five years are predicted to create $137 billion revenues, impressively accelerating the pace from 2008, when consultant Ovum pegs the technology to have taken off. In 2014, 258 million laptop and 158 million handset users will be onboard globally. The numbers imply that as users increase — along with data consumed/user — revenues/user will decline accordingly.

Stop Thief!

Stop Thief! Laptop owners can now lash out at thieves via a program that lets laptops speak. Existing software programs have functions that erase data, lockdown the computer, or initiate GPS for tracking, but this one delivers a verbal warning. Thieves hear an owner's customized message or a default version. How about: "Stand back, I have a bomb" for super attention.

Focus On . . .
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60 Degree Molded RJ45
Shaxon Industries, Inc.

60 Degree Molded RJ45 Shaxon Industries 60 degree molded RJ45 cables provide a unique angled molded strain relief boot for both shielded and non-shielded Cat5E applications. Uses Shaxon's short body RJ45 plug for enchanced performance. It is available in tap up or down design, maintains bend radius requirements, and is excellent for high-density patch fields.

Custom-designed Acoustical Enclosures
Acoustical Solutions, Inc.

Custom-designed Acoustical Enclosures AudioSeal™ acoustical blankets and enclosures are economical and custom-built within four weeks. Easy to comply with regulatory noise ordnances and easy to specify. Superior noise reduction for both interior and exterior applications with STC ratings up to 33 and NRC ratings up to 0.85.

Careers & Commentary . . .
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Will Noise Protect Web Surfers' IDs?

Will Noise Protect Web Surfers' IDs? Guaranteed privacy without losing functionality goes to all searching the Web if noise is added to search-engine records say researchers. At the same time, software engineers who use search data will still be able to develop better search technology even with a lesser degree of identification. A Microsoft Research team characterizes the effort as achieving "provable privacy." In brief, the amount of noise controls the degree of privacy.

Diversions . . .
Brain Waves Foretell Mistakes

Brain Waves Foretell Mistakes Using magnetoencephalography (MEG), scientists have discovered that just before making a mistake, humans produce distinctive brain waves indicative of a lack of attention. It works like this: about one second before a mistake occurs, brain waves in two sections of the brain become more active. Potential applications include attention-monitoring devices for life-critical safety workers like air traffic controllers, and treatments for ADHD (attention deficit hyperactivity disorder) children.

Share Your Thoughts . . .
About This Month's Topic

About This Month's Topic Should Web Privacy be Guaranteed?

Provable privacy (see "Will Noise Protect Web Surfers' IDs?" in this issue) can be imparted to Web surfers by adding noise to search records. Do you think this is a good idea?


Join the discussion...


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April 20, 2009 - Volume 4 Issue 4
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Archives
Past Issues of this eNewsletter
Volume 9 - Issue 2 - 03/17/2014
Noise Datalogger for Environmental Studies and Outdoors Applications; Join Us for Our Educational Webinars; PUI Piezo Benders ; Custom Built Transformers; Low Inrush Current Toroidal Transformers and Isolation Stations; Quick and Reliable High Quality Cable and Wire!
Volume 9 - Issue 1 - 01/20/2014
Noise and Vibration = Product Quality; Newly Released Products for 2014; Vibration/Temperature Monitoring for Industrial Machinery; HALT and HASS Testing for Product Reliability; Complete Triaxial Monitoring Solutions; Noise and Vibration Analyzer - OR35
Volume 8 - Issue 6 - 11/18/2013
New USB Triaxial Vibration Measurement System; Noise and Vibration = Product Quality; Records Sound Levels and Displays Frequency Spectrum; Available - PUI Audio AW-10 and AW-15 Sirens; The Next Generation Acoustical Material is Here; Piezo Electric, Sound Electronics, Audio Signals ; Newly Released Products for 2014; Remotely Monitor Pressure and Room Condition
Volume 8 - Issue 5 - 09/16/2013
Audio Transformers; EMI/RFI Shielding; Watch Acoustiblok's Educational Soundproofing Installation Video; Acoustic Doors and Windows; Studio 54 Cleanable Acoustical Panels; Records Sound Levels and Displays Frequency Spectrum; Alarms Can't Fail in Critical Applications; ROHM Semiconductor USB/MP3 Audio Media Decoder
Volume 8 - Issue 4 - 07/15/2013
Acoustical Room Kits by Acoustical Solutions; SMD Molded High Current Power Inductors; Audio Design Workshop Live Webcast from AES Helsinki; Nondestructive Testing Services/Industrial Sector; Models 765M25 and 765M27 Acoustic Sensors; Rugged, Dependable, Shielded SMD Power Inductors; ROHM Semiconductor USB/MP3 Audio Media Decoder
Volume 8 - Issue 3 - 05/20/2013
Custom Magnetics for Acoustics and Audio; QB 2 a Technology for Personal Quiet Zone; Piezo Motor Stage / Ultrasonic PiezoMotor; Complete Testing of ASIO PC Audio Interfaces; CKE Supression Devices; Overly Sound Rated Doors Ready for Quick Shipment; PUI Audio Electret Condenser Microphones
Volume 8 - Issue 2 - 03/18/2013
The Active Noise Reduction Dev Kit 'Enabler Edition'; Piezoelectric/Force Balance Accelerometers; Dual Winding Shielded SMD Power Inductors; Digital Hydrometers and Density Meters; Complete Solution for Greener Acoustics;
Volume 8 - Issue 1 - 01/21/2013
Noise Reduction Trim; Best Single Axis in Seismic Accelerometer; Measure Vibration, Ultrasound, and Temperature Simultaneously; Complete Testing of ASIO PC Audio Interfaces; Ride the Wave with Whisperwave
Volume 7 - Issue 6 - 11/19/2012
APx511 Hearing Instrument Analyzer; Quiet Bubble Technology; Rugged, Highly Accurate Force Balance Accelerometers; X-MET5100 Handheld XRF Analyzer for Fast Grade ID; 1/N Octave Analysis; Unleash Your Creativity with WhisperWave Baffles; Piezo Electric, Sound Electronics, Audio Signals ; Star Ceilings 101 - How To's; HALT and HASS Testing for Product Reliability
Volume 7 - Issue 5 - 09/17/2012
No-compromise Smartphone Audio Test; APTIV Black Film Delivers in Acoustic Speakers; Custom Air Core Inductor Coils; SMD Molded High Current Power Inductors; Adding Art to Acoustical Treatments; Nondestructive Testing Services/Industrial Sector
Volume 7 - Issue 4 - 07/16/2012
Quiet Bubble Technology; PUI Audio AW-10 and AW-15 Sirens; Masterys IP+ (10 to 80 kVA) Tailor-made to Withstand Harsh Environments; Piezo Electric, Sound Electronics, Audio Signals; The World Standard in Audio Test
Volume 7 - Issue 3 - 05/21/2012
Quiet Bubble Technology; We Have All Your Test Equipment Needs; New Model 831 Reverberation Firmware; Models 765M25 and 765M27 Acoustic Sensors
Volume 7 - Issue 2 - 03/19/2012
New Model 831 Reverberation Firmware; We Have All Your Test Equipment Needs; PUI Audio AW-10 and AW-15 Sirens; Custom Sound-proofing and Acoustic Materials; Piezo Electric, Sound Electronics, Audio Signals; Advanced Field Vibration Analyzers
Volume 7 - Issue 1 - 01/16/2012
APTIV Black Film Delivers in Acoustic Speakers; Acoustic Emission; Advanced Field Vibration Analyzers; New Industrial Buyer's Guide; Custom Sound-proofing and Acoustic Materials
Volume 6 - Issue 12 - 12/19/2011
APTIV Black Film Delivers in Acoustic Speakers; Acoustic Emission; Overall Acoustic Level; Custom Sound-proofing and Acoustic Materials; EEC Magnets and Assemblies ITAR/DFARS Compliant; Waterproof Equipment Cases from Dayang Enclosures
Volume 6 - Issue 11 - 11/21/2011
APTIV Black Film Delivers in Acoustic Speakers; New Model 831 Reverberation Firmware; AW-10 and AW-15 Sirens; Ultra-low Capacitance Diode Arrays for ESD Protection; PolyMetallix Nanoscale Zero Valent Iron
Volume 6 - Issue 10 - 10/17/2011
New Model 831 Reverberation Firmware; Overall Acoustic Level; BK Precision 735 Sound Level Meter, Logging; Fluke Ti32 60Hz Thermal Imager
Volume 6 - Issue 9 - 09/19/2011
Acoustic and Impulse Cleaning Systems; Acoustical Materials - Polyurethane Foam; Miniature Speaker Series Provides Broad Spectrum of Sounds; Acoustic Emission; Models 765M25 and 765M27 Acoustic Sensors; LP-13 Shake Absorber - an Invaluable Tool to Sound Engineering; TFA9881/2 3.4 W Audio Amplifiers
Volume 6 - Issue 8 - 08/15/2011
Analyze Audio Playback Devices Faster; Extech 407730 Digital Sound Meter; Overall Acoustic Level; 735 Sound Level Meter, Logging
Volume 6 - Issue 7 - 07/18/2011
Overall Acoustic Level; New Model 831 Reverberation Firmware; BK Precision 735 Sound Level Meter, Logging; 5.7 in. Surface Acoustic Wave Touch Screen Release
Volume 6 - Issue 6 - 06/20/2011
Nor 848 Acoustic Camera; Acoustic Emission; CSS-05 Series Buzzers; Custom Sound-proofing and Acoustic Materials; ECHO Digital Intercom and Communication Systems; Driver Units - DKU-75F
Volume 6 - Issue 5 - 05/16/2011
Audio Transformers; 407730 Digital Sound Meter; Cost-effective Large Channel Acoustic Measurements; PA-Systems - DKU 100N;
Volume 6 - Issue 4 - 04/18/2011
Custom Sound-proofing and Acoustic Materials; Acoustic Emission; Noise and Vibration Analyzer - Ultraportable OR34; Sound Barrier Walls, Fences, and Enclosures; Tensility's Slim Line Audio Cables for Applications with Limited Space; APTIV Black Film Delivers in Acoustic Speakers
Volume 6 - Issue 3 - 03/21/2011
Simple Solutions for Complex Audio Problems; Soundproofing Breakthrough; New Model 831 Reverberation Firmware; Digital Sound Meter
Volume 6 - Issue 2 - 02/21/2011
Superior Analog Audio Noise Reduction; AS9100 Certified Precision Metal Fabricator; New Model 831 Reverberation Firmware; Knowles Acoustics' MR Series Features a Waterproof Bellows Assembly; Overall Acoustic Level
Volume 6 - Issue 1 - 01/17/2011
Low-cost USA Made Military Headset; Models 765M25 and 765M27 Acoustic Sensors; Magnetic-free Harsh Environment Piezo Speaker; APTIV Black Film Delivers in Acoustic Speakers
Volume 5 - Issue 12 - 12/20/2010
Got an Industrial Noise Problem?; Acoustic Solutions for Industrial Applications; Custom Sound-proofing and Acoustic Materials; Acoustic Emission; Slim Line Audio Cables from Tensility; Overall Acoustic Level
Volume 5 - Issue 11 - 11/15/2010
Records Sound Levels and Displays Frequency Spectrum; Acoustical Foam - Polyurethane; 5.7 in. Surface Acoustic Wave Touch Screen Release; APTIV Black Film Delivers in Acoustic Speakers; BK Precision 735 Sound Level Meter, Logging; Sound Level Meters
Volume 5 - Issue 10 - 10/18/2010
Control Sound and Eliminate Noise; Remote / Stand Alone Noise and Vibration Analysis; Acoustic Emission; AD8271 Precision Programmable-Gain Difference Amplifier
Volume 5 - Issue 9 - 09/20/2010
Industrial All Weather Sound Panels; Models 765M25 and 765M27 Acoustic Sensors; Sound Level Meters from Larson Davis; BK Precision 735 Sound Level Meter, Logging; Custom Sound-proofing and Acoustic Materials
Volume 5 - Issue 8 - 08/16/2010
Reduce Noise and Block Sound; Introduction to Acoustics Simulation Tutorial CD - Complimentary Copies Available; Multi-Layer Piezo Speakers from PUI Audio; Industrial Silencers and Sound Attenuators
Volume 5 - Issue 7 - 07/19/2010
Got an Industrial Noise Problem?; APTIV Black Film Delivers in Acoustic Speakers; Complimentary Acoustics Simulation Kit CD; Overall Acoustic Level; Acoustic Emission; Acoustical Curtain Composites
Volume 5 - Issue 6 - 06/21/2010
Custom Sound-proofing and Acoustic Materials; Digital Sound Meter; ROHM Audio IC - Ground Isolation Amplifier; Noise Dose Meter; Line Array-PA System Remote Alignment Tool; BK Precision 735 Sound Level Meter, Logging
Volume 5 - Issue 5 - 05/17/2010
Audio Transformers; Reduce Noise and Block Sound; Boiler Tube Cleaning with Impulse Technology Webinar; Sound Level Meters from Larson Davis; Noise Control with Perforated Metal Components; NaviSound 400 Hydrographic Echosounders; ECHO Digital Intercom and Communication Systems
Volume 5 - Issue 4 - 04/19/2010
Complimentary Acoustics Simulation Kit CD; Models 765M25 and 765M27 Acoustic Sensors; APTIV Black Film Delivers in Acoustic Speakers; PUI Audio Surface Mount Speakers Now; Noise Reduction and Heat Removal Equipment;
Volume 5 - Issue 3 - 03/15/2010
Specializing in Inrush Current Limiting Thermistors; Audio Product and Device Testing Services; Acoustical Enclosures; S-Cube: Reduces Acoustic Noise; Sound Level Meters; Overall Acoustic Level; Precision 735 Sound Level Meter, Logging
Volume 5 - Issue 2 - 02/15/2010
Complimentary Acoustics Simulation Kit CD; Digital Sound Meter; PUI Audio Surface Mount Speakers; Acoustic Emission; Custom Sound-proofing and Acoustic Materials; Acoustical Foam - Polyurethane
Volume 5 - Issue 1 - 01/18/2010
New PolyPhon Acoustical Panels; Adhesives and Assembly Equipment for Loudspeakers; S-Fan: Hot Swap Active Silencer; 5.7 in. Surface Acoustic Wave Touch Screen Release; Battery-Powered Fiber Optic Microphone; PCB Series Alarms Provide Optimum Audio; Models 765M25 and 765M27 Acoustic Sensors; Piezo Motor Stage / Ultrasonic PiezoMotor
Volume 4 - Issue 12 - 12/21/2009
Complimentary Online Resources with MyCatalog; New Acoustic Imaging System Lens Forms; Overall Acoustic Level; BK Precision 735 Sound Level Meter, Logging; Texas Instrument's TPA6140A2 Class G Audio Amplifier; Noise Reduction and Heat Removal Equipment
Volume 4 - Issue 11 - 11/16/2009
Never Sacrifice Form for Function; MEMS Module; All Optical Communications Earplug; Noise Control Enclosures; Heat Removal and Noise Reduction Cabinets; Certifications
Volume 4 - Issue 10 - 10/19/2009
Reduce Noise and Block Sound; S-Cube Reduces Product Acoustic Noise; Custom Design for Aesthetics to Functionality; APTIV Black Film Delivers in Acoustic Speakers; Virtual.Lab Acoustics; Models 765M25 and 765M27 Acoustic Sensors; Nichicon Audio Capacitors; Custom Sound-proofing and Acoustic Materials
Volume 4 - Issue 9 - 09/21/2009
BK Precision 735 Sound Level Meter, logging; Overall Acoustic Level; Design Meets Noise and Reverberation Control; Intrinsically Safe Communication Earplug; New Series of Acoustic Sensors; Extech 407730 Digital Sound Meter
Volume 4 - Issue 8 - 08/17/2009
The Clear Choice in Sound Diffusion; Models 765M25 and 765M27 Acoustic Sensors; PolySorpt Moisture Resistant Acoustical Panels; National Semiconductor's LM48100Q Amplifier; Industrial Silencers and Sound Attenuators; Noise Reduction and Heat Removal Equipment
Volume 4 - Issue 7 - 07/20/2009
Acoustic Solutions for Industrial Applications; High-temperature Noise Resolved Combining Acoustiblok and Thermablok; Overall Acoustic Level; APTIV - VICTREX PEEK Film Technology Heats Up the Loudspeaker Industry; Virtual.Lab Acoustics; Acoustics Module
Volume 4 - Issue 6 - 06/15/2009
Custom Design for Aesthetics to Functionality; Got an Industrial Noise Problem?; All Optical Communications Earplug; Acoustic Emission; Case Innovation; Series MIN-T Audible and Audible Strobe
Volume 4 - Issue 5 - 05/18/2009
The Art of Diffusion Clarifies Speech; Revolutionary Sound Masking and Paging System; Virtual.Lab Acoustics; Acoustics Module; Texas Instruments AIC3254; Custom Sound-proofing and Acoustic Materials
Volume 4 - Issue 4 - 04/20/2009
Piezo Motor Stage / Ultrasonic PiezoMotor; 5.7 in. Surface Acoustic Wave Touch Screen Release; National Semiconductor LMV1088/89 Audio Amps; Acoustical Curtain Composites; 60 Degree Molded RJ45; Custom-designed Acoustical Enclosures
Volume 4 - Issue 3 - 03/16/2009
Audio Transformers; New 21st Century Sound Diffusers for Critical Listening Environments; Heat Removal and Noise Reduction Cabinets; NaviSound 400 Hydrographic Echosounders; Acoustical Materials - Polyurethane Foam; Audio Power Transformers; National's Audio Solutions; Audio Jacks and Plugs
Volume 4 - Issue 2 - 02/16/2009
Noise Reduction and Heat Removal Equipment; Overall Acoustic Level; ECHO Digital Intercom and Communication Systems; ARIS - Acoustic Resonance Inspection System; High Intensity Acoustic Sensor, Model 2180C; SigQC
Volume 4 - Issue 1 - 01/19/2009
Acoustical Enclosures; AcoustiLock ACL 16 Acoustic Enclosure; 5.7 Surface Acoustic Wave Touch Screen Release; New Series of Acoustic Sensors; Acoustical Foam - Polyurethane; Models 765M25 and 765M27 Acoustic Sensors
Volume 3 - Issue 12 - 12/15/2008
Sonolator - Ultrasonic Homogenizing Device; Industrial Silencers and Sound Attenuators; ((((Noisy Environments?)))); Acoustical Curtain Composites; ExitPoint Directional Sounder with Voice Messaging; Miniature General Purpose Speakers
Volume 3 - Issue 11 - 11/17/2008
New Acoustical Wall Panel for Critical Listening Environments; Streamline Your Design Process with 3D CAD Connector Models; The Noise Police Acoustical Products; ECHO Digital Intercom and Communication Systems; Measurement Microphone Kit; Measurement Microphone Kit
Volume 3 - Issue 10 - 10/20/2008
Power-by-Light Fiber Optic linked Communication Earplug; Audio Transformers 300Hz-100kHz Mil-T-27E; All Weather Panels; Qylite Automotive Acoustic Foam Technology; High Temperature Acoustic Measurement System; ARIS - Acoustic Resonance Inspection System; Overall Acoustic Level; High Intensity Acoustic Sensor, Model 2180C
Volume 3 - Issue 9 - 09/15/2008
Wire and Cable Performance Testing; New Headsets for Optically Powered, Wireless Earplugs; New Acoustical Wall Panel for Critical Listening Environments; Audio Jacks and Plugs; Sound Level Meters; NaviSound 400 Hydrographic Echosounders; Piezo Audio Transducers and Buzzers; Audible Signaling Device - 300GC
Volume 3 - Issue 8 - 08/18/2008
((((Noisy Environments?)))); Wire and Cable Performance Testing; New Headsets for Optically Powered, Wireless Earplugs; National's Audio Solutions; Industrial Silencers and Sound Attenuators; Piezo Electric Buzzers; Acoustical Curtain Composites; AcoustiLock ACL 16 Acoustic Enclosure
Volume 3 - Issue 7 - 07/21/2008
Piezo Motor Stage / Ultrasonic PiezoMotor; Audio Power Transformers; Reliable Acoustic Measurement Products; Silicon Microphone, Surface Mount Microphones; ExitPoint Directional Sounder with Voice Messaging; Speaker Parts
Volume 3 - Issue 6 - 06/16/2008
NaviSound 400 Hydrographic Echosounders; DT-8852 Sound Level Meter; Setra Pressure Transducer Answer for Manufacturer; High Intensity Acoustic Sensor, Model 2180C; Battery-Powered Fiber Optic Microphone; SelecTone Plant Wide Warning and PA Systems
Volume 3 - Issue 5 - 05/19/2008
One 3 mm Layer Reduces More Sound Than 12 in. of Concrete; Acoustical Foam - Polyurethane; Audio Jacks and Plugs; Sound Level Meters; Miniature General Purpose Speakers
Volume 3 - Issue 4 - 04/21/2008
New 21st Century Sound Diffusers for Critical Listening Environments; Introducing Tri MAP's Newest Configuration!; VA One : The ONE Vibro-Acoustic Simulation Software; Piezo Motor Stage / Ultrasonic PiezoMotor; ExitPoint Directional Sounder with Voice Messaging; Speakers; Industrial Silencers and Sound Attenuators; Acoustical Curtain Composites
Volume 3 - Issue 3 - 03/17/2008
Acoustics Simulation Tutorial CD; The Noise Police Acoustical Products; Piezo Electric Buzzers; KSONIK I / II / II Ultrasonic Level Transmitters; Silicon Microphone, Surface Mount Microphones; Fibersound Microphone Drivers
Volume 3 - Issue 2 - 02/18/2008
New 21st Century Sound Diffusers for Critical Listening Environments; Reliable Acoustic Measurement Products; Sound and Noise Measurement Solutions; Condenser Microphone — AMB-O60G38-CC; Audio Unlimited™ 900MHz Wireless Speakers; Speaker Parts; Audio/Video Cable Reel Catalog from Hannay Reels; Audio Power Transformers
Volume 3 - Issue 1 - 01/21/2008
PosiSound Silicon Microphone Productline Introduction by Memstech, Operational TPA, Atmel: Stereo Audio Digital-to-Analog Converter, Acoustical Enclosures, AcoustiLock ACL 16 Acoustic Enclosure, Piezo Audio Transducers and Buzzers
Volume 2 - Issue 12 - 12/17/2007
PosiSound Silicon Microphone Productline Introduction by Memstech; HIGH SPL Speaker; Condenser Microphone; Uamplified Speakers for Intercom Systems; Triad SP Series Audio Transformers; SelecTone® Audible Signaling Device — 300GC
Volume 2 - Issue 11 - 11/19/2007
Fiber Optic Microphone System; APTIV — VICTREX® PEEK™ Film Technology Heats Up the Loudspeaker Industry; Mylar Speakers; Model ITC-6128 HF Test Projector/Hydrophone; SeaBat 8124 Multibeam Hydrographic Sonar; Model 6829 Spherical Transducer; DEWE-3108; Atlona Dual Banana Plug (Speaker Connector)
Volume 2 - Issue 10 - 10/15/2007
2700 Series Dual Domain Audio Analyzer, SAW (Surface Acoustic Wave) Scale, Noise and Vibration Analyzer - OR35, EC 6070 Hydrophone Audio Amplifier, Polyether Foam for Sound Dampening, Flex-Tone Series Audible Products
Volume 2 - Issue 9 - 09/17/2007
Triad SP Series Audio Transformers 300Hz-100kHz Mil-T-27E, se Control Enclosures for Blower Packages, Panel Mount Sounder/Speaker, Software, Design & Analysis, and Product Software, JP005 Series Audio Jack, Cable HDMI M/M, Atlona Dual Banana Plug (Speaker Connector)
Volume 2 - Issue 8 - 08/20/2007
Acoustax Noise Barriers, Simulate your Product's Real-World Acoustic Performance, Speakers, Audio Jacks and Plugs, Fiber Optic Digital Audio Cable, Mylar Speakers, EC 6070 Hydrophone Audio Amplifier
Volume 2 - Issue 7 - 07/16/2007
Battery Powered Fiber Optic Microphone; MemsTech Pushes the Microphone Industry Ahead; Sound Level Meters and Noise Dosimeters; High Intensity Acoustic Testing; PVC Foam Tape; Audio Products and Accessories
Volume 2 - Issue 6 - 06/18/2007
Piezo Transducer; Spherical Transducer; Acoustic Enclosure; Speakers; Automotive Acoustic Foam Technology; Plant Wide Warning and PA Systems
Volume 2 - Issue 5 - 05/21/2007
Piezo Electric Sounders; Providing Noise Control Solutions for Industrial and Architectural Applications; Digital Sound Meter; Microphone; Underwater Transducer; Cost Effective Sound Level Calibrator
Volume 2 - Issue 4 - 04/16/2007
Mylar Speakers; Pollution Noise Control; Sound Level Meter and Data Logger; SAW (Surface Acoustic Wave) Scale; Polyether Foam for Sound Dampening; Battery Module Dry Cell
Volume 2 - Issue 3 - 03/19/2007
Psychoacoustic Models; Acoustics Transducers; Piezo Audio Transducers and Buzzers; Soundproof Curtains; Sound Power; Shielded Low Leakage Speakers
Volume 2 - Issue 2 - 02/19/2007
Piezo Buzzer; Wall and Ceiling Liner; Audio Jack; Acoustic Foam Wedges; Custom Speakers; Indoor Controller
Volume 2 - Issue 1 - 01/15/2007
Mylar Speakers; Acoustic Pressure Sensors; Acoustic Emission Transducers; Exterior Acoustical Absorber; Acoustic Sensors; High Power Transducer
Volume 1 - Issue 1 - 12/18/2006
Foam for Sound Absorption; Small Series Linear Amplifiers; Acoustical Foam; Audio Jacks and Plugs; Shorter Design Cycles; Electromotive Receiver