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Speech enhancement using a microphone array mounted on an unmanned aerial vehicle

机译:使用安装在无人机上的麦克风阵列增强语音

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An attempt to record speech signals using an array of directional microphones carried by an unmanned aerial vehicle (UAV) is reported. The speech enhancement algorithm estimates the power spectral densities (PSD) of the target speech and rotor noise which are used to calculate a Wiener filter for extracting the target speech. The calculated Wiener filter is then applied to the output of a beamforming implemented on the microphone array signals. The proposed algorithm was tested on a prototype UAV equipped with directional microphones each of which was orientated in different directions. The experimental results revealed that the proposed method was able to significantly reduce both the UAVs rotor noise and an interfering speech in a recording.
机译:报告了尝试使用无人飞行器(UAV)携带的定向麦克风阵列记录语音信号的尝试。语音增强算法估计目标语音和转子噪声的功率谱密度(PSD),这些功率谱密度用于计算用于提取目标语音的维纳滤波器。然后将计算出的维纳滤波器应用于在麦克风阵列信号上实现的波束成形的输出。所提出的算法在配备定向麦克风的原型无人机上进行了测试,每个定向麦克风的方向都不同。实验结果表明,所提出的方法能够显着降低无人机的转子噪声和录音中的语音干扰。

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