[BUG] pyrato intersection_time_lundeby

HISTORY.rst

@@ -2,6 +2,14 @@
 History
 =======
 
+(unreleased)
+------------
+
+Fixed:
+^^^^^^
+- ``pyrato.edc.intersection_time_lundeby`` now works for multi-dimensional Signals (PR #170)
+
+
 1.0.0 (2026-03-19)
 ------------------
 

pyrato/dsp.py

@@ -155,6 +155,7 @@ def _smooth_rir(
         The time vector fitting the original data.
 
     """
+    cshape = data.shape[:-1]
     data = np.atleast_2d(data)
     n_samples = data.shape[-1]
     n_samples_nan = np.count_nonzero(np.isnan(data), axis=-1)
@@ -164,11 +165,12 @@ def _smooth_rir(
         np.floor((n_samples-n_samples_nan)/n_samples_per_block),
         dtype=int)
 
+    # average data in blocks
     n_blocks_min = int(np.min(n_blocks))
     n_samples_actual = int(n_blocks_min*n_samples_per_block)
     reshaped_array = np.reshape(
         data[..., :n_samples_actual],
-        (-1, n_blocks_min, n_samples_per_block))
+        (*cshape, n_blocks_min, n_samples_per_block))
     time_window_data = np.mean(reshaped_array, axis=-1)
 
     # Use average time instances corresponding to the average energy level

tests/test_dsp.py

@@ -222,7 +222,7 @@ def test_smoothed_rir_1D():
         rir,
         sampling_rate=3000,
         smooth_block_length=0.075)[0]
-    npt.assert_allclose(actual, expected)
+    npt.assert_allclose(np.atleast_2d(actual), expected)
 
 
 def test_smoothed_rir_2D():

tests/test_edc_noise_handling.py

@@ -230,14 +230,17 @@ def test_edc_chu_2D():
     npt.assert_allclose(actual.time, expected)
 
 
-def test_intersection_time_1D():
+def test_intersection_time_lundeby_single():
+    """Test with a single-channel Signal."""
     rir = pf.Signal(genfromtxt(
         os.path.join(test_data_path, 'analytic_rir_psnr50_1D.csv'),
         delimiter=','), 3000)
     expected = np.atleast_2d(genfromtxt(
         os.path.join(test_data_path, 'intersection_time_1D.csv'),
         delimiter=',')).T
 
+    assert rir.cshape == (1, )
+
     actual = enh.intersection_time_lundeby(
         rir,
         freq='broadband',
@@ -248,14 +251,41 @@ def test_intersection_time_1D():
     npt.assert_allclose(actual, expected)
 
 
-def test_intersection_time_2D():
+def test_intersection_time_lundeby_multichannel():
+    """Test with a two-channel Signal."""
     rir = pf.Signal(genfromtxt(
         os.path.join(test_data_path, 'analytic_rir_psnr50_2D.csv'),
         delimiter=','), 3000)
     expected = np.atleast_2d(genfromtxt(
         os.path.join(test_data_path, 'intersection_time_2D.csv'),
         delimiter=','))
 
+    assert rir.cshape == (2, )
+
+    actual = enh.intersection_time_lundeby(
+        rir,
+        freq='broadband',
+        is_energy=False,
+        time_shift=False,
+        channel_independent=False,
+        plot=False)
+    npt.assert_allclose(actual, expected)
+
+
+def test_intersection_time_lundeby_multi_dimensional():
+    """Test with a Signal of cshape = (2, 2)."""
+    rir = pf.Signal(genfromtxt(
+        os.path.join(test_data_path, 'analytic_rir_psnr50_2D.csv'),
+        delimiter=','), 3000)
+    rir = pf.utils.concatenate_channels((rir, rir), 0).reshape((2, 2))
+
+    expected = np.atleast_2d(genfromtxt(
+        os.path.join(test_data_path, 'intersection_time_2D.csv'),
+        delimiter=','))
+    expected = [np.vstack((e, e)) for e in expected]
+
+    assert rir.cshape == (2, 2)
+
     actual = enh.intersection_time_lundeby(
         rir,
         freq='broadband',