diff --git a/audiotools/core/effects.py b/audiotools/core/effects.py
index fb534cbc..f51d16e4 100644
--- a/audiotools/core/effects.py
+++ b/audiotools/core/effects.py
@@ -276,7 +276,7 @@ def pitch_shift(self, n_semitones: int, quick: bool = True):
         self.audio_data = self._to_3d(waveform)
         return self.to(device)
 
-    def time_stretch(self, factor: float, quick: bool = True):
+    def time_stretch(self, factor: float, quick: bool = True, speech: bool = True):
         """Time stretch the audio signal.
 
         Parameters
@@ -300,6 +300,9 @@ def time_stretch(self, factor: float, quick: bool = True):
         if quick:
             effects[0].insert(1, "-q")
 
+        if speech:
+            effects[0].insert(1, "-s")
+
         waveform = self._to_2d().cpu()
         waveform, sample_rate = torchaudio.sox_effects.apply_effects_tensor(
             waveform, self.sample_rate, effects, channels_first=True
diff --git a/tests/core/test_effects.py b/tests/core/test_effects.py
index c0d6765b..7d5d3b8a 100644
--- a/tests/core/test_effects.py
+++ b/tests/core/test_effects.py
@@ -178,6 +178,13 @@ def test_time_stretch():
 
     batched = spk_batch.deepcopy().time_stretch(0.8)
 
+    #non-default case
+    single = spk.deepcopy().time_stretch(0.8, speech=False)
+
+    spk_batch = AudioSignal.batch([spk.deepcopy() for _ in range(batch_size)])
+    
+    batched = spk_batch.deepcopy().time_stretch(0.8, speech=False)
+
     assert np.allclose(batched[0].audio_data, single[0].audio_data)