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Acoustical Inventions


Sound pressure level adjuster

Left/right earpieces with a high quality microphone on the external surface, a hi-fi loudspeaker on the inside and an electronic level control, either physically placed on the ear piece or controlled via remote for sound level control.
Rated: 58/100 (4 votes)

voice identification of caller

pre-recorded audio identification of a caller which is transmitted as ringtone when a wireless headphone connected to a cellphone. This enables the called party to identify the caller without needing to see the screen of the cellphone.
Rated: 56/100 (12 votes)

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