The invention discloses a method, an apparatus and a system for reducing the noise of an earphone, so as to provide a method for reducing the noise of an earphone without adding a hardware device, thereby saving hardware equipment. The method includes the headset equipment interface, analog digital conversion circuit and digital filter circuit, audio decoder and digital to analog conversion circuit, MIC was used to process the collected environmental noise on the headset, obtained by inverting environmental noise corresponding to the ambient noise, and the headset is sent to the reverse environmental noise superimposed in the audio signal in order to offset the environmental noise, the phase of environmental noise and human ear hear directly, to achieve noise reduction headset. The technical scheme of the invention does not need to be improved to reduce the headset or headset headset connection equipment noise, simplify the process, reduce the noise of headset can save hardware equipment, and does not need the hardware device is improved, thereby improving the noise reducing headset is universal and flexible.
【技术实现步骤摘要】
【技术保护点】
1.一种降低耳机噪声的设备,包括耳机接口、模数转换电路、数字滤波电路、音频解码器、数模转换电路,其特征在于,其中:耳机接口,用于连接耳机,接收耳机的MIC采集的环境噪声;模数转换电路,连接所述耳机接口,用于对所述耳机接口接收到的环境噪声进行模数转换,得到数字环境噪声并输出;数字滤波电路,连接所述模数转换电路,用于对所述模数转换电路输出的数字环境噪声进行滤波处理和反相处理,得到反相数字环境噪声并输出;音频解码器,连接所述数字滤波电路,用于对待发送给所述耳机音频信号进行解码并输出音频信号,以及,用于将所述数字滤波电路输出的反相数字环境噪声叠加到所述音频信号中,得到叠加信号并输出;数模转换电路,连接所述音频解码器,用于对所述音频解码器输出的叠加信号进行数模转换和功率放大处理,将得到的信号通过所述耳机接口发送给所述耳机。
【技术特征摘要】
【专利技术属性】
技术研发人员:王海盈,
申请(专利权)人:青岛海信移动通信技术股份有限公司,
类型:发明
国别省市:95
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