Add Ray tracing method for RIR (#2850) #3234

nateanl · 2023-04-03T19:29:31Z

Summary:
This PR adds the ray_tracing() helper to compute a RIR (part of #2624). The implementation is heavily based on pyroomacoustics.

Pull Request resolved: #2850

Differential Revision: D41764237

Pulled By: nateanl

facebook-github-bot · 2023-04-03T19:30:07Z

This pull request was exported from Phabricator. Differential Revision: D41764237

nateanl · 2023-04-05T22:14:50Z

cc @fakufaku @JupiterEthan ray_tracing function should be ready, would like to hear thoughts from you. Thanks!

mthrok · 2023-04-12T01:34:21Z

torchaudio/csrc/ray_tracing.cpp

+      const torch::Tensor& _absorption,
+      const torch::Tensor& _scattering,
+      const torch::Tensor& _normal,
+      const torch::Tensor& _origin)
+      : absorption(std::move(_absorption)),
+        reflection((scalar_t)1. - _absorption),
+        scattering(std::move(_scattering)),
+        normal(std::move(_normal)),
+        origin(std::move(_origin)) {}


Applying std::move to const reference is strange.
You can probably remove std::move and copy construct them.

mthrok · 2023-04-12T01:34:35Z

torchaudio/csrc/ray_tracing.cpp

+  torch::Tensor get_absorption() {
+    return absorption;
+  }


seems not used.

mthrok · 2023-04-12T01:35:11Z

torchaudio/csrc/ray_tracing.cpp

+  torch::Tensor get_reflection() {
+    return reflection;
+  }
+  torch::Tensor get_scattering() {
+    return scattering;
+  }


Probably, making it a attribute and accessing directly would do.

mthrok · 2023-04-12T01:38:34Z

torchaudio/csrc/ray_tracing.cpp

+    false; // TODO: remove this once hybrid method is supported
+const int ISM_ORDER = 10; // TODO: remove this once ISM method is supported
+#define EPS ((scalar_t)(1e-5))
+#define VAL(t) (*((t).template data_ptr<scalar_t>()))


I don't think this macro is necessary. Simply calling item method should do.

mthrok · 2023-04-12T01:45:40Z

torchaudio/csrc/ray_tracing.cpp

+  auto num_mics = mic_array.size(0);
+  auto num_bands = absorption.size(0);


Cannot call size(0), without first checking the ndim >= 1

mthrok · 2023-04-12T01:47:01Z

torchaudio/csrc/ray_tracing.cpp

+      scalar_t _energy_thres,
+      scalar_t _time_thres,
+      scalar_t _hist_bin_size)
+      : room(_room),


the dimension of room is not checked.

mthrok · 2023-04-12T01:47:20Z

torchaudio/csrc/ray_tracing.cpp

+        time_thres(_time_thres),
+        hist_bin_size(_hist_bin_size),
+        max_dist(VAL(room.norm()) + (scalar_t)1.),
+        D(room.size(0)),


D is unbounded. Need validation

Rather, I'd make D a template parameter.

mthrok · 2023-04-12T01:48:39Z

test/torchaudio_unittest/prototype/functional/functional_test_impl.py

+
+        assert hist.shape == expected_shape
+
+    def test_ray_tracing_input_errors(self):


need more of these. currently the implementation does not reject the invalid shapes like empty tensors.

mthrok · 2023-04-12T01:49:07Z

test/torchaudio_unittest/prototype/functional/functional_test_impl.py

+            scattering=scattering,
+        )
+
+        assert hist.shape == expected_shape


Please use self.assertEqual. (Buck does not report numbers with assert)

mthrok · 2023-04-12T01:50:07Z

torchaudio/csrc/ray_tracing.cpp

+  /**
+   * The main (and only) public entry point of this class. The histograms Tensor
+   * reference is passed along and modified in the subsequent private method
+   * calls. This method spawns num_rays rays in all directions from the source
+   * and calls simul_ray() on each of them.
+   */


Please use // for comment so that later it's easy to block the whole thing

mthrok · 2023-04-12T01:53:24Z

torchaudio/csrc/ray_tracing.cpp

+  histograms = histograms.transpose(
+      1, 2); // back into shape (num_mics, num_bands, num_bins)


Can you move the comment to separate line? It's easier to read that way.

mthrok · 2023-04-12T01:53:57Z

torchaudio/csrc/ray_tracing.cpp

+      travel_dist += hit_distance;
+      transmitted *= wall.get_reflection();
+
+      //   Let's shoot the scattered ray induced by the rebound on the wall


Suggested change

// Let's shoot the scattered ray induced by the rebound on the wall

// Let's shoot the scattered ray induced by the rebound on the wall

mthrok · 2023-04-12T01:55:37Z

torchaudio/csrc/ray_tracing.cpp

+const bool IS_HYBRID_SIM =
+    false; // TODO: remove this once hybrid method is supported


please move the comment to separate line

pytorch-bot · 2023-09-08T19:38:28Z

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Summary: This PR adds the `ray_tracing()` helper to compute a RIR (part of pytorch#2624). The implementation is heavily based on `pyroomacoustics`. Differential Revision: D41764237 Pulled By: nateanl

facebook-github-bot · 2023-09-08T19:38:36Z

This pull request was exported from Phabricator. Differential Revision: D41764237

mthrok · 2023-09-11T19:52:30Z

torchaudio/csrc/ray_tracing.cpp

+      }
+
+      if (intersection_found) {
+        next_wall_index = 2 * d[0] + ind_inc;


@nateanl I feel like this should be d[0] + 2 * ind_inc. Do we have test to verify this is correct?

@nateanl Actually, this is correct for 3D but not for 2D. Because for 2D the order of wall is SENW, while for 3D it's WESNCF.

Summary: This PR adds the `ray_tracing()` helper to compute a RIR (part of pytorch#2624). The implementation is heavily based on `pyroomacoustics`. Differential Revision: D41764237 Pulled By: nateanl

facebook-github-bot · 2023-09-11T22:24:17Z

This pull request was exported from Phabricator. Differential Revision: D41764237

Summary: Revamped version of pytorch#3234 (which was also revamp of pytorch#2850) Differential Revision: D49197174

Taken from pytorch#3234

Summary: Revamped version of pytorch#3234 (which was also revamp of pytorch#2850) Differential Revision: D49197174 Pulled By: mthrok

Taken from #3234

Summary: Revamped version of pytorch#3234 (which was also revamp of pytorch#2850) Differential Revision: D49197174 Pulled By: mthrok

Summary: Revamped version of #3234 (which was also revamp of #2850)

facebook-github-bot added CLA Signed fb-exported labels Apr 3, 2023

mthrok reviewed Apr 12, 2023

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nateanl force-pushed the export-D41764237 branch from 0be21fb to 57ddebf Compare September 8, 2023 19:38

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mthrok reviewed Sep 11, 2023

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Add Ray tracing method for RIR (pytorch#3234)

ca69eaa

Summary: This PR adds the `ray_tracing()` helper to compute a RIR (part of pytorch#2624). The implementation is heavily based on `pyroomacoustics`. Differential Revision: D41764237 Pulled By: nateanl

nateanl force-pushed the export-D41764237 branch from 57ddebf to ca69eaa Compare September 11, 2023 22:24

mthrok mentioned this pull request Sep 12, 2023

WIP: Add Ray Tracing #3604

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WIP: Add Ray Tracing

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Summary: Revamped version of pytorch#3234 (which was also revamp of pytorch#2850) Differential Revision: D49197174

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WIP: Add Ray Tracing (pytorch#3604)

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Summary: Revamped version of pytorch#3234 (which was also revamp of pytorch#2850) Differential Revision: D49197174

mthrok added a commit to mthrok/audio that referenced this pull request Sep 13, 2023

WIP: Add Ray Tracing (pytorch#3604)

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Add the rest of C++ ray tracing implementation

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Add the rest of C++ ray tracing implementation #3630

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Add the rest of C++ ray tracing implementation

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WIP: Add Ray Tracing (pytorch#3604)

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Add the rest of C++ ray tracing implementation (#3630)

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Add Ray Tracing (#3604) #3655

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Add Ray tracing method for RIR (#2850) #3234

Add Ray tracing method for RIR (#2850) #3234

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facebook-github-bot commented Sep 11, 2023

		auto num_mics = mic_array.size(0);
		auto num_bands = absorption.size(0);


		assert hist.shape == expected_shape

		def test_ray_tracing_input_errors(self):

		histograms = histograms.transpose(
		1, 2); // back into shape (num_mics, num_bands, num_bins)

	// Let's shoot the scattered ray induced by the rebound on the wall
	// Let's shoot the scattered ray induced by the rebound on the wall

		const bool IS_HYBRID_SIM =
		false; // TODO: remove this once hybrid method is supported

Add Ray tracing method for RIR (#2850) #3234

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pytorch-bot bot commented Sep 8, 2023 • edited Loading

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/audio/3234

❌ 7 New Failures

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