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Ultrasound is acoustic (sound) energy in the form of waves having a frequency above the human hearing range. The highest frequency that the human ear can detect is approximately 20 thousand cycles per second (20,000 Hz ). This is where the sonic range ends, and where the ultrasonic range begins.
System and method for hearing screening on a listening device
PCT designated stageWO2026132144A1Headphones for stereophonic communicationStereophonic circuit arrangementsAcoustic transmissionHearing screen
A system (100) includes a listening device (105) with a processor (110), memory (112), speaker driver (120), and microphone (130) for determining hearing loss. The memory includes processor-executed instructions (155) for carrying out steps including transmitting an ultrasound tone to a user of the listening device (105); measuring length of an ear canal of the user after receiving a reflected ultrasound signal; transmitting an audible sound to the user of the listening device; transmitting an ultrasound tone to the user of the listening device (105) and measuring length of an ear canal of the user after receiving a reflected ultrasound signal; comparing the measurement of the length of the ear canal before and after the audible sound transmission; and if there is no change or minimal change in the length, notifying the user of hearing loss or controlling the listening device to limit sound level.
Owner:KONINKLIJKE PHILIPS NV