Noise-cancelling headphone
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United States of America Patent
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Aug 27, 2024
Grant Date -
May 25, 2023
app pub date -
Dec 1, 2020
filing date -
Apr 3, 2020
priority date (Note) -
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status (Latency Note)
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Abstract
A noise-cancelling headphone 1 includes a headphone unit (14), a baffle plate (13) to which the headphone unit is attached, an ear pad (12) attached to the baffle plate, a housing (11) attached to the baffle plate, a first microphone (16) that collects external noise, a first buffer amplifier unit (151) that performs impedance conversion to a signal from the first microphone and output the impedance-converted signal, a second microphone (17) that collects internal noise, a second buffer amplifier unit (152) that performs impedance conversion to a signal from the second microphone and outputs the impedance-converted signal, and a noise-cancelling signal generating circuit (154) that generates a noise-cancelling signal, based on a combined signal by combining the signal from the first buffer amplifier unit with the signal from the second buffer amplifier unit.
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