Title:
HEADPHONE CIRCUIT WITH ADJUSTABLE FEEDBACK-TYPE ACTIVE NOISE-REDUCTION LEVEL
Document Type and Number:
WIPO Patent Application WO/2018/157266
Kind Code:
A1
Abstract:
A headphone circuit with an adjustable feedback-type active noise-reduction level, the circuit comprising: a noise input section (1), an audio input section (2) and an amplification output section (3), wherein after the noise input section (1) is mixed with the audio input section (2) by means of an adder, the amplification output section (3) amplifies a signal and then outputs the signal; and the amplification output section (3) returns an output audio signal to the noise input section (1) to form adjustable feedback-type active noise reduction. By means of providing an adjustable amplifier in the headphone circuit with an adjustable feedback-type active noise-reduction level, the problem existing in the prior art of the adjustment for all of an adjustable feedback-type active noise-reduction level, an active noise-reduction level and a music equalizer being controlled by using one gain is solved, and the gain of an audio signal is not influenced by the feedback-type active noise-reduction level; and the structure thereof is simple, the usage thereof is convenient, and the sound quality of the headphone is significantly improved.
Inventors:
YEUNG SIU CHUNG (CN)
WONG ON YUNG TIMMY (CN)
WONG ON YUNG TIMMY (CN)
Application Number:
PCT/CN2017/000312
Publication Date:
September 07, 2018
Filing Date:
April 24, 2017
Export Citation:
Assignee:
FUJIKON IND CO LTD (CN)
International Classes:
H04R1/10; G10L21/0216; G10L21/0316
Domestic Patent References:
| WO2016032523A1 | 2016-03-03 |
Foreign References:
| CN206533513U | 2017-09-29 | |||
| CN106465007A | 2017-02-22 | |||
| CN101208742A | 2008-06-25 | |||
| CN101765041A | 2010-06-30 |
Attorney, Agent or Firm:
GUANGZHOU ESON PATENT & TRADEMARK AGENCY CO., LTD. (CN)
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