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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
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Octave-Band center frequency values derivation
My perceptual coding experience
Dan Wiggins on Design Goals
A/C frequency-weighting derivations
Apr 01, 2007
Scientists have discovered a way to recover past sounds that have been embedded in walls:
Scientists have worked on the software and technology that can measure how each atom has been disturbed and match each unique disturbance with a unique word.
The technology virtually “replays” the sequence of words that have been spoken inside the walls. It’s like rewinding a tape recorder and you can go as far back in history as you want.
[btw, please note the date]