frgen-at is a self audio-testing program I've developed for
personal use. Given a good pair of headphones, a 24bit-capable soundcard and
good environmental conditions, it's possible to perform professional quality
ear-response testing with relatively low-cost hardware. Below you can see
some sample outputs generated by testing myself (slight hearing loss is
visible on low and medium frequencies) using a professional pair of
Technish headphones, 24bit/48KHz sound mixing on a
Octane's RAD v12 audio processor.
Emphasis has been done on minimising errors and producing high-quality results by introducing several self-coherency tests (it's almost impossible to cheat), different testing typologies and in the same time reducing the overall testing time. It copes rather well with artificial noises introduced by tintinnus.
frgen-at is currently in alpha stage: the code is indeed a mess,
but it works as a testbed for new ideas. Development is done on IRIX; an SDL
port is available (with reduced audio quality). Source and more information
are available upon request. Beware: sound
knowledge is needed to interpret the results, as well to perform decent
tests. This is not a substitute to a doctor's visit.