利索-全球专利检索

  1. 登录
  2. 注册
发明公开
CN108091344A 一种降噪方法、装置及系统 无效 - 驳回

一种降噪方法、装置及系统
摘要：
本申请公开了一种降噪方法、装置及系统，基于包括至少两个全向型麦克风的麦克风阵列和指向型麦克风实现，获取麦克风阵列采集的声音信号，并基于此确定声源方位，控制指向型麦克风指向声源方位，并获取指向型麦克风对声源方位采集的声音信号，最后根据指向型麦克风采集的声音信号，确定降噪后的声音信号。本申请通过在硬件上增加指向型麦克风，实现硬件降噪与软件降噪的结合，而硬件降噪不受噪声形态的要求，能够解决现有方法所存在的低频噪声、随机噪声难以滤除的问题，提高了降噪效果。
摘要（英）：

The invention discloses a noise reduction method, device and system. The method is achieved based on a microphone array including at least two omnidirectional microphones and a directional microphone.The method comprises the steps of obtaining a sound signal collected by the microphone array, determining a sound source position based on the sound signal, controlling the directional microphone topoint to the sound source position, and acquiring the sound signal of the sound source position collected by the directional microphone; finally, determining the sound signal after noise reduction according to the sound signal collected by the directional microphone. According to the method, the directional microphone is installed on hardware to achieve a combination of hardware noise reduction and software noise reduction, the hardware noise reduction is not affected by requirements of noise morphology, and the method can solve the problem in prior art that low-frequency noises and random noises are difficult to filter out, so that effects of noise reduction are improved.

0/0