A Comparative Measurement Microphone Study

In mid-August 2013, the SP Technical Research Institute of Sweden undertook a study to compare four brands of measurement microphones. The standards bureau had been asked to purchase four microphones of the same type from four different measurement microphone manufactures — Brüel & Kjær, BSWA, G.R.A.S. Sound and Vibration A/S, and PCB Piezotronics.

The February 2015 edition of Voice Coil is already available and features our annual Loudspeaker Cone Vendor Survey 2015. James Croft’s Acoustic Patents reviews recent inventions from Libratone (Denmark) and Genelec (Finland). Vance Dickason’s Test Bench focuses on a 6.5” pro sound midrange driver, from PRV Audio Brazil and the reissue of the famous G12H “GreenBack” 12” guitar speaker by Celestion. Mike Klasco writes about the Endumax cone material by Teijin Aramid.

BSWA Technology recently announced a new impedance tube system for pavements absorption testing. The new SW420R solution was specially designed for measurement of sound absorption and properties of road surfaces, using an integrated, portable and stable tube design, reducing the leak of sound signal.