Acoustic suspension processing

Power-Aware Acoustic Processing

We investigated the tradeoffs between accuracy and battery-energy longevity of acoustic beamforming on disposable sensor nodes subject to varying key parameters: 1) number of microphones, 2) duration of sampling, 3) number of search angles, and 4) CPU clock speed. Beyond finding the most energy efficient implementation of the beamforming algorithm at a specified accuracy, we seek to enable appl...

Underwater Acoustic Signal Processing Workshop

Listings Underwater Acoustic Communications: Working at the Intersection of Physics, Signal Processing, and Communications Theory James C. Preisig Woods Hole Oceanographic Institution WHIO, MS #11 Woods Hole, MA 02543 [email protected] The underwater environment is widely regarded as one of the most difficult communication channels. Underwater acoustic communications systems are challenged by t...

Acoustic vector-sensor array processing

Existing theory yields useful performance criteria and processing techniques for acoustic pressure-sensor arrays. Acoustic vector-sensor arrays, which measure particle velocity and pressure, offer significant potential but require fundamental changes to algorithms and performance assessment. This thesis develops new analysis and processing techniques for acoustic vectorsensor arrays. First, the...

Homomorphic Processing of Acoustic Logging

A new processing method, which we developed for the guided waves generated during acoustic logging, accurately estimates the wavenumber when only a few seismograms are available or when the seismograms are irregularly spaced. The estimates of the attenuation coefficient are seemingly accurate when many seismograms are available but are inaccurate when only a few seismograms are available. The n...

^paceJTime Processing, Environmental-Acoustic Effects