Upload utils.py

utils.py

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+from pydub import AudioSegment
+#from pydub.utils import mediainfo
+from pydub.utils import make_chunks
+import math
+#flac_audio = AudioSegment.from_file("sample.flac", "flac")
+#flac_audio.export("audio.wav", format="wav")
+def split_audio_wav(filename):
+    myaudio = AudioSegment.from_file(filename , "wav")
+    channel_count = myaudio.channels    #Get channels
+    sample_width = myaudio.sample_width #Get sample width
+    duration_in_sec = len(myaudio) / 1000#Length of audio in sec
+    sample_rate = myaudio.frame_rate
+    print("sample_width=", sample_width) 
+    print("channel_count=", channel_count)
+    print("duration_in_sec=", duration_in_sec) 
+    print("frame_rate=", sample_rate)
+    bit_rate =16  #assumption , you can extract from mediainfo("test.wav") dynamically
+    wav_file_size = (sample_rate * bit_rate * channel_count * duration_in_sec) / 8
+    print("wav_file_size = ",wav_file_size)
+    file_split_size = 40000000  # 40mb OR 40, 000, 000 bytes
+    total_chunks =  wav_file_size // file_split_size
+    #Get chunk size by following method #There are more than one ofcourse
+    #for  duration_in_sec (X) -->  wav_file_size (Y)
+    #So   whats duration in sec  (K) --> for file size of 40Mb
+    #  K = X * 40Mb / Y
+    chunk_length_in_sec = math.ceil((duration_in_sec * 40000000 ) /wav_file_size)   #in sec
+    chunk_length_ms = chunk_length_in_sec * 1000
+    chunks = make_chunks(myaudio, chunk_length_ms)
+    number_chunks=len(chunks)
+    chunks_list=[]
+    #Export all of the individual chunks as wav files
+    for i, chunk in enumerate(chunks):
+        chunk_name = "chunk{0}.wav".format(i)
+        print("exporting", chunk_name)
+        chunk.export(chunk_name, format="wav")
+        chunks_list.append(chunk_name)
+    return chunks_list