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Is linear array? #1

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ghost opened this issue Dec 4, 2019 · 4 comments
Open

Is linear array? #1

ghost opened this issue Dec 4, 2019 · 4 comments

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@ghost
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ghost commented Dec 4, 2019

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@ZhangZhaofeng
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作者使用了一个圆阵，TDOA在计算时假设麦克风和中心点为由两个麦克风组成的线性阵列，那么TDOA的计算模型就可以简化为计算信号到达中心点的时间差。于是用下列方式计算这个时间差。
(self.mic_diameter / 2) * np.cos(np.deg2rad(look_direction) - np.deg2rad(mic_angle) / self.sound_speed
同时计算6个麦克风的时间差，即可得到6个目标麦克风的TDOA。

@ZhangZhaofeng ZhangZhaofeng mentioned this issue Mar 23, 2023
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@wrz1999
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wrz1999 commented Jun 5, 2023

MIC_DIAMETER是麦克风的半径还是直径

@ZhangZhaofeng
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MIC_DIAMETER是麦克风的半径还是直径

是直径。计算的时候要除以2。

@hk0901
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hk0901 commented Aug 4, 2023

是不是还需要考虑仰角呢

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@ZhangZhaofeng @hk0901 @wrz1999