Merge pull request #341 from iver56/ij/flatten-ravel

Make Mp3Compression slightly faster by replacing flatten with ravel

Author: iver56

audiomentations/augmentations/mp3_compression.py

@@ -188,7 +188,7 @@ def apply_lameenc(self, samples: NDArray[np.float32], sample_rate: int):
 
         if num_channels == 1:
             if int_samples.ndim == 1 and degraded_samples.ndim == 2:
-                degraded_samples = degraded_samples.flatten()
+                degraded_samples = np.ravel(degraded_samples)
             elif int_samples.ndim == 2 and degraded_samples.ndim == 1:
                 degraded_samples = degraded_samples.reshape((1, -1))
 
@@ -239,7 +239,7 @@ def apply_pydub(self, samples: NDArray[np.float32], sample_rate: int):
 
         if num_channels == 1:
             if int_samples.ndim == 1 and degraded_samples.ndim == 2:
-                degraded_samples = degraded_samples.flatten()
+                degraded_samples = np.ravel(degraded_samples)
             elif int_samples.ndim == 2 and degraded_samples.ndim == 1:
                 degraded_samples = degraded_samples.reshape((1, -1))