Meeting Report: Dr. Uwe J. Hansen on Phase Considerations in Signal Processing

At this, the third of our meetings scheduled for the year which was held on May 12th, 2011 at 7pm, we were privileged to have Dr. Uwe J. Hansen speak on Phase Considerations in Signal Processing.

Dr. Hansen is Professor Emeritus of Physics at Indiana State University and a fellow of the Acoustical Society of America, among numerous other distinctions.

The meeting was held in the conference room of ESCO Communications Indianapolis office, where Dr. Hansen spoke before an enthusiastic crowd.

Dr. Hansen speaking to members of the Central Indiana AES. Click for more pictures.

In his presentation, Dr. Hansen discussed how phase comparison can be a powerful tool with countless real-world applications. The three specific applications of phase related signal processing techniques discussed were phase sensitive detection, optical holography, and modal analysis.

Dr. Hansen explained that the elements essential to describing a monochromatic wave are amplitude, frequency, wavelength, speed of propagation, polarization and phase.

Additionally, it was explained that phase identifies the location of a point along the propagating waves and that absolute phase measurements are not only difficult but generally not of interest.

Click to view.

The meeting was once again brought to us courtesy of ESCO Communications. Our thanks go out to them for the continued use of their facilities.

With this meeting we’ve continued our initiative of recording events for archival purposes and to allow for participation from members unable to travel. The video from this meeting is available at left for playback.

Finally, we’d like to thank all who were in attendance. As always, those with questions or concerns are encouraged to contact us. To stay up to date on section activities, be sure to follow us on Facebook or Twitter.