Specimen Intake
Procedure: a tone will rise. press the button the moment it disappears for you.
Trials: three. the median is taken. the median does not negotiate.
set a comfortable volume. remove one earbud if you enjoy suspense.
fine print: many laptop speakers surrender around 16,000 Hz, well before your ears do. headphones are recommended for results of scientifically dubious value. the tone is quiet and gets quieter-feeling as it climbs. this is normal. so is doubt.
results are not admissible in court.
trial 1 of 3
8,000 Hz
Findings
0 Hz
Free Range
press and hold anywhere on the strip. 100 Hz to 20,000 Hz. mind the neighbors.
this document self-certifies.