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Any2HRTF / Mesh2HRTF

Open software for the numerical calculation of head-related transfer functions
European Union Public License 1.2
103 stars 11 forks source link

Head transfer function Low frequency domain analysis questions #122

Closed kangminheo-cpf20e closed 3 months ago

kangminheo-cpf20e commented 4 months ago

I'm going to use mesh2HRTF to interpret the low frequency range of HRTF, 0-5000 Hz (step:100 Hz).

However, the interpretation results are strange. As shown in the attached picture, the time response also does not look like an impulse and keeps vibrating. Also, the frequency response comes out weird.

Why is this happening? Please tell me how to solve it.

I'll put the blenderfile, export code, and interpretation results that I interpreted on the Google Drive link. What am I doing wrong?

https://drive.google.com/drive/folders/12LOyPKFBwOZhSB0Pb8bxpR_9Gbv-RFbi?usp=sharing

HRIR_ARI_10000_2D.pdf HRIR_Default_10000_2D.pdf

f-brinkmann commented 4 months ago

I see that your HRTFs contain extremely large values at high frequencies. This is usually a sign for errors in the mesh (e.g., too large edge lengths). I would first try to compute only up to a frequency where these values do not occur.

kangminheo-cpf20e commented 4 months ago

I modified the mesh file using 'hrtf_mesh_grading_WindowsExe', and the settings are as follows. "bin\hrtf_mesh_grading -x 0.5 -y 10 -v -h 0.20 -s "left" -i 3Dmesh_orig.stl -o 3Dmesh_graded_left.ply

bin\hrtf_mesh_grading -x 0.5 -y 10 -v -g 0.20 -s "right" -i 3Dmesh_orig.stl -o 3Dmesh_graded_right.ply "

Is there anything wrong here by any chance?

f-brinkmann commented 4 months ago

It might, but its hard to say without seeing the mesh and the result...

f-brinkmann commented 3 months ago

Closed due to inacitivity