Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

关于CircularSDBeamformer方法的抑制能力疑问 #48

Open
SouppuoS opened this issue Feb 24, 2022 · 1 comment
Open

关于CircularSDBeamformer方法的抑制能力疑问 #48

SouppuoS opened this issue Feb 24, 2022 · 1 comment

Comments

@SouppuoS
Copy link

你好,
我在尝试按照Jacob的 Design of Circular Differential Microphone Arrays 中的Superdirective相关内容实现超指向波束成形,但发现在半径1厘米的6麦圆阵列设置下得到的beampattern与书上所示相差较大。

书中p104,Fig. 6.5 Patterns of the superdirective beamformer with a UCA (M = 6), without the symmetry constraint,能看到beampattern存在若干抑制较高约40dB的零点。

但在我的实现中,相同阵列设置下抑制能力最大只有约5dB。
同时我尝试了setk中的CircularSDBeamformer(radius=1. / 100, num_arounded=6)方法,发现结果与自己实现的效果类似,与书上差异较大。

想请教下这中间可能存在什么问题?

@xfqjklw
Copy link

xfqjklw commented Oct 24, 2024

我也发现了类似的问题,线阵能和书上的对应上,环形阵列不行。

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Labels
None yet
Projects
None yet
Development

No branches or pull requests

2 participants