Update app.py

app.py

@@ -16,13 +16,15 @@ import math
 from scipy.signal import butter, sosfiltfilt
 
 
-def apply_low_pass_filter(audio_segment, cutoff_freq, order=6):  ##added
+def apply_low_pass_filter(audio_segment, cutoff_freq, order=6):
     """
     Applies a low-pass filter to an AudioSegment.
+
     Args:
         audio_segment: The AudioSegment to filter.
         cutoff_freq: The cutoff frequency in Hz.
         order: The order of the Butterworth filter.
+
     Returns:
         A new AudioSegment with the filtered audio.
     """
@@ -32,7 +34,23 @@ def apply_low_pass_filter(audio_segment, cutoff_freq, order=6):  ##added
     normalized_cutoff = cutoff_freq / nyquist_freq
     sos = butter(order, normalized_cutoff, btype='low', output='sos')
     filtered_array = sosfiltfilt(sos, segment_array)
-    return audio_segment._spawn(filtered_array.astype(audio_segment.sample_width * 8 // 8))
+
+    sample_width = audio_segment.sample_width
+    dtype = None
+    if sample_width == 1:
+        dtype = np.int8
+    elif sample_width == 2:
+        dtype = np.int16
+    elif sample_width == 3:
+        dtype = np.int32  # Or potentially a custom type depending on the library
+    elif sample_width == 4:
+        dtype = np.int32
+
+    if dtype is not None:
+        return audio_segment._spawn(filtered_array.astype(dtype))
+    else:
+        raise ValueError(f"Unsupported sample width: {sample_width}")
+
 
 
 def get_silence(duration_ms=1000):