Serving the Acoustics Community Since 1994
Cross-Spectrum Labs offers Sound & Vibration Consulting Services
Inter-Noise 2006 presentation: Paper (PDF) | Discussion
Bose QC-1 headphone noise reduction measurements
ASA/Noise-Con 2005 presentation: Paper | Slides (PDF)
B&K 1/2-inch mic. adapters for GenRad 1986/1987 calibrators for sale
Microphone Measurement Services
Octave-Band center frequency values derivation
My perceptual coding experience
Dan Wiggins on Design Goals
A/C frequency-weighting derivations
Jun 03, 2010
Synaudcon published an article a couple of months ago that discusses the use of personal digital media players (iPod, etc) for acoustical measurements. The article focus primarily on the electrical characteristics of the PMP outputs (maximum voltage levels, distortion, and so on). The article also measures the performance of of several PMPs playing STI-PA and swept sine test signals where proper clock timing is crucial to obtain acceptable results. Good stuff.