gnutelephony@wizzwizz4 @devinprater at the time we actually made Styrofoam "heads" that we carved ear canals and placed mics into, and a sweep audio source we could move and position around in a sound studio, to get a basic idea. Sometimes the best way to figure something out is a physical model.
GNU social JP is a social network, courtesy of GNU social JP管理人. It runs on GNU social, version 2.0.2-dev, available under the GNU Affero General Public License.
All GNU social JP content and data are available under the Creative Commons Attribution 3.0 license.