simplify creating a new audio segment from samples

API.markdown

@@ -480,6 +480,10 @@ from pydub import AudioSegment
 sound = AudioSegment.from_file(“sound1.wav”)
 
 samples = sound.get_array_of_samples()
+
+# then modify samples...
+
+new_sound = sound._spawn(samples)
 ```
 
 ## Effects

pydub/audio_segment.py

@@ -329,6 +329,12 @@ def _spawn(self, data, overrides={}):
         if isinstance(data, list):
             data = b''.join(data)
 
+        if isinstance(data, array.array):
+            try:
+                data = data.tobytes()
+            except:
+                data = data.tostring()
+
         # accept file-like objects
         if hasattr(data, 'read'):
             if hasattr(data, 'seek'):

pydub/effects.py

@@ -28,10 +28,8 @@ def apply_mono_filter_to_each_channel(seg, filter_fn):
         for sample_i, sample in enumerate(channel_seg.get_array_of_samples()):
             index = (sample_i * n_channels) + channel_i
             out_data[index] = sample
-    try:
-        return seg._spawn(out_data.tobytes())
-    except:
-        return seg._spawn(out_data.tostring())
+
+    return seg._spawn(out_data)
 
 
 @register_pydub_effect
@@ -225,10 +223,8 @@ def low_pass_filter(seg, cutoff):
             offset = (i * seg.channels) + j
             last_val[j] = last_val[j] + (alpha * (original[offset] - last_val[j]))
             filteredArray[offset] = int(last_val[j])
-    try:
-        return seg._spawn(data=filteredArray.tobytes())
-    except:
-        return seg._spawn(data=filteredArray.tostring())
+
+    return seg._spawn(data=filteredArray)
 
 
 @register_pydub_effect
@@ -260,12 +256,10 @@ def high_pass_filter(seg, cutoff):
 
             last_val[j] = alpha * (last_val[j] + original[offset] - original[offset_minus_1])
             filteredArray[offset] = int(min(max(last_val[j], minval), maxval))
-    try:
-        return seg._spawn(data=filteredArray.tobytes())        
-    except:
-        return seg._spawn(data=filteredArray.tostring())
-
 
+    return seg._spawn(data=filteredArray)
+
+
 @register_pydub_effect
 def pan(seg, pan_amount):
     """

pydub/scipy_effects.py

@@ -5,8 +5,8 @@
 Of course, you will need to install scipy for these to work.
 
 When this module is imported the high and low pass filters from this module
-will be used when calling audio_segment.high_pass_filter() and 
-audio_segment.high_pass_filter() instead of the slower, less powerful versions 
+will be used when calling audio_segment.high_pass_filter() and
+audio_segment.high_pass_filter() instead of the slower, less powerful versions
 provided by pydub.effects.
 """
 from scipy.signal import butter, sosfilt
@@ -41,10 +41,7 @@ def filter_fn(seg):
         sos = butter(order, freqs, btype=type, output='sos')
         y = sosfilt(sos, seg.get_array_of_samples())
 
-        try:
-            return seg._spawn(y.astype(seg.array_type).tobytes())            
-        except:
-            return seg._spawn(y.astype(seg.array_type).tostring())
+        return seg._spawn(y.astype(seg.array_type))
 
     return filter_fn
 
@@ -64,4 +61,4 @@ def high_pass_filter(seg, cutoff_freq, order=5):
 @register_pydub_effect
 def low_pass_filter(seg, cutoff_freq, order=5):
     filter_fn = _mk_butter_filter(cutoff_freq, 'lowpass', order=order)
-    return seg.apply_mono_filter_to_each_channel(filter_fn)
+    return seg.apply_mono_filter_to_each_channel(filter_fn)