Sunday, August 28, 2011

Test your Hearing!

You can now test your hearing sensitivity, equal loudness contours, and audiometry.

Warning 1. Do not start with a panel in the top third of the chart: you might hurt or even damage your ears.

Warning 2. Results using this test cannot be regarded as clinical data. Although the sound files have been carefully prepared, the actual sound level and spectral purity depend on the frequency response of your sound card and headphones. They may, however, be helpful for comparison, such as left vs right ear, or for changes in hearing over time, assuming that you use the same hardware. Note, however, that daily fluctuations in hearing are common. If you are worried about your hearing, consult an audiologist.

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For best results you will need reasonably good quality headphones that enclose your ears completely and seal out external noises. Ordinary loudspeakers, and especially the small ones that come with computers, have such poor response, particularly at low frequency and are so much affected by interference effects and resonances that results obtained with them are useless. They may also be damaged by low frequencies.

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