The audio professional society.

MP3.com chief executive Michael Robertson took the witness stand today to defend his company against charges of willfully violating record label copyrights to profit from a novel Internet music service. [News.com]

Offers a wide variety of level controls including sonic laser, ultrasonic and vibration . Library of instruction manuals and product specifications available for download.

Magazine covering the underwater and ocean marine community.

Robert A. Day (NDT-net)

The sound and tuning of church bells. WavAnal, a free software package, is provided for spectral analysis of bells.

Extensive list of links and topics on vacuum tube audio applications, projects, theory, and design. Boasts a "world's largest" tube audio links section.

From the Technical University of Denmark.

Ultrasonic SMT stencil cleaning systems, SMT inspection stations.

Supply a PC-based platform for testing coarse grained construction and manufacturing materials. Analysis of surface waves and ultrasonic pulse velocity. Exhibits, seminars and conference details.

Manufacture ultrasonic immersion, phased array and air coupled transducers and accessesories. Includes a section on the science of nondestructive testing.

Manufactures a range of sensors including inductive, capacitive, photo electric, and ultrasonic. Includes product catalog and data sheets.

Evidence-based review on HIFU prostate treatment by the Genitourinary Group at the BC Cancer Agency

Manufactures a range of ASNT standard and custom ultrasonic calibration blocks .

Manufacture industrial airborne sound sensors, measuring tools and systems for contact free distance and thickness measurements .