Past meetings of the Society
February 2011

Date: Sunday, February 27, 2011, 6:00 PM

Place: Boston University, Life Science & Engineering Bldg, 24 Cummington St.
Room: 103, Boston, MA 02215

Featured Guests: Joe DeMarinis (, and Alvin Foster
Topic: Our Testing & Review of the Dayton Audio OmniMic Measurement System


Joe DeMarinis and Alvin Foster will demonstrate the usability of Dayton Audio's OmniMic. It is a $300 acoustic measurement system for hi-fi hobbyist and home theater installers. It was developed in collaboration with Liberty Instruments, inventors of the Praxis audio analysis tool. The OmniMic system includes a calibrated USB powered microphone, software, and a test signal discs. Your computer provides the platform for the measurement system. Joe will provide a report on the calibration accuracy of the included microphone.

Some of the tests provided by the OmniMic system:
* SPL meter with A, B, & C weighting
* Spectrum analyzer, FFT, or RTA
* Frequency response
* Oscilloscope function
* Harmonic distortion: 2nd – 5th harmonics & THD

We may have refreshments at 5:30.


The Boston Audio Society
PO BOX 260211
Boston MA 02126

problems? email Barry:

updated 3/7/11