Noise cancel headphone

Abstract

Provided is a noise cancel headphone including: a microphone which converts a surrounding noise into an electric signal; cancel signal generation means which inverts the phase of the noise signal converted by the microphone, so as to generate a cancel signal; and a speaker which mixes an audio signal with the cancel signal for output. The headphone further includes: reference signal generation means which generates a reference signal of a predetermined level; and comparison means which outputs a control signal according to the result of a comparison between the noise signal and the reference signal. The cancel signal generation means starts operation according to a control signal outputted from the comparison means. The noise cancel headphone can control whether a cancel process is required according to the level of the surrounding noise.

Description

technical field [0001] The present invention is a noise-canceling headphone capable of canceling noise by outputting a signal for canceling surrounding noise together with music so that only music can be heard, and more particularly relates to a noise-cancelling headphone capable of performing cancellation corresponding to the level of surrounding noise Handled noise-canceling headphones. Background technique [0002] With the popularization of portable music players in various ways, the headphones used in the players are also required to have high performance, and then it is expected to have such a head-mounted noise-canceling headphones: when you want to go on the street or When listening to music while riding a vehicle, it is possible to hear only the music without being disturbed by surrounding noise (noise). [0003] The reason for this is that when there is noise around, the noise is mixed in the playback music and enters the ear, so even if the music played back (rep...

AI Technical Summary

Problems solved by technology

[0003] The reason for this is that when there is noise around, the noise is mixed in the playback music and enters the ear, so even if the music played back (reproduced) in the headphones is high-quality music, it will be affected by the noise. without being able to enjoy high-quality music

In addition, under the influence of surrounding noise, the playback volume is often raised to listen, and the sound will leak from the headphones, which will become a noise source that brings unpleasant feelings to the surrounding people while riding a vehicle, etc.

Images