Hearing test card method and device has card applied to ear for supplying sound wave for self-testing of hearing

摘要

The hearing test card method and device has the size and weight of the hearing test card limited so that it can be carried in a wallet or a pocket, the card used for self-testing of the hearing of each ear by application of the hearing test card to the ear, for supply of a sound wave via a loudspeaker (7), with subjective evaluation of the volume. The hearing test card may have the same size and weight as a bank card.