10 examples of 'convert mp3 to wav python' in Python

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27def convert_to_music(bytes):
28 song = AudioSegment.from_file(io.BytesIO(bytes), format="mp3")
29 output = io.StringIO()
30 song.export(output, format="mp3", bitrate="192k")
31 converted_sound = AudioSegment.from_mp3(cwd + "/music/copy.mp3")
32 print("Done")
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37def DecodeFlacToWav(input_bytes):
38 """Decode a FLAC byte string to WAV."""
39 p = subprocess.Popen(
40 ['sox', '-t', 'flac', '-', '-t', 'wav', '-'],
41 stdin=subprocess.PIPE,
42 stdout=subprocess.PIPE,
43 stderr=subprocess.PIPE)
44 out, err = p.communicate(input=input_bytes)
45 assert p.returncode == 0, err
46 return out
146def raw16b_from_wav(wav):
147 data = array.array('h',[x for m_x in zip(*wav) for x in m_x])
148 if sys.byteorder == 'big':
149 data.byteswap()
150 return data.tobytes()
11def play_file(wavfile):
12 audio_file = open(wavfile, "rb")
13 wav = audioio.WaveFile(audio_file)
14 speaker.play(wav)
15 while speaker.playing:
16 pass
37def play_file(wavfile):
38 f = open(wavfile, "rb")
39 wav = audioio.WaveFile(f)
40 a.play(wav)
29def read_wav(wavfile):
30 """Reads the wav file and downsamples to 11025 Hz if needed.
31
32 @param wavfile string: Path to the wave file.
33 @return x np.array: Array of samples of the audio file.
34 @return fs int: Sampling frequency.
35 """
36 assert os.path.isfile(wavfile), \
37 'ERROR: wivefile file %s does not exist' % wavfile
38
39 x, fs, enc = audiolab.wavread(wavfile)
40 if len(x.shape) >= 2:
41 x = x[:, 0] # Make mono
42
43 assert fs == 44100, \
44 "ERROR: File %s is not sampled at 44100 Hz" % wavfile
45
46 return x, fs
141def audio_convert(cfn, subdir, fn, audiodir, wav16_dir):
142 # global mfcc_dir
143
144 # convert audio if not done yet
145
146 w16filename = "%s/%s.wav" % (wav16_dir, cfn)
147
148 if not os.path.isfile(w16filename):
149
150 wavfilename = "%s/%s/wav/%s.wav" % (audiodir, subdir, fn)
151
152 if not os.path.isfile(wavfilename):
153 # flac ?
154 flacfilename = "%s/%s/flac/%s.flac" % (audiodir, subdir, fn)
155
156 if not os.path.isfile(flacfilename):
157 print " WAV file '%s' does not exist, neither does FLAC file '%s' => skipping submission." % (
158 wavfilename, flacfilename)
159 return False
160
161 print "%-20s: converting %s => %s (16kHz mono)" % (
162 cfn, flacfilename, w16filename)
163 os.system(
164 "sox '%s' -r 16000 -b 16 -c 1 %s" % (flacfilename, w16filename))
165
166 else:
167
168 print "%-20s: converting %s => %s (16kHz mono)" % (
169 cfn, wavfilename, w16filename)
170 os.system(
171 "sox '%s' -r 16000 -b 16 -c 1 %s" % (wavfilename, w16filename))
172
173 return True
90def buffer_to_wav(profile: Dict[str, Any], buffer: bytes) -> bytes:
91 """Wraps a buffer of raw audio data in a WAV"""
92 rate = int(pydash.get(profile, "audio.format.sample-rate-hertz", 16000))
93 width = int(pydash.get(profile, "audio.format.sample-width-bits", 16)) // 8
94 channels = int(pydash.get(profile, "audio.format.channel-count", 1))
95
96 with io.BytesIO() as wav_buffer:
97 with wave.open(wav_buffer, mode="wb") as wav_file:
98 wav_file.setframerate(rate)
99 wav_file.setsampwidth(width)
100 wav_file.setnchannels(channels)
101 wav_file.writeframesraw(buffer)
102
103 return wav_buffer.getvalue()
57def play_wav(self, wav_path):
58 """Play audio from the given WAV file.
59
60 The file should be mono and small enough to load into memory.
61 Args:
62 wav_path: path to the wav file
63 """
64 with wave.open(wav_path, 'r') as wav:
65 if wav.getnchannels() != 1:
66 raise ValueError(wav_path + ' is not a mono file')
67
68 frames = wav.readframes(wav.getnframes())
69 self.play_bytes(frames, wav.getframerate(), wav.getsampwidth())
23def nwa2wav(self, data):
24 (channels, depth, rate, u1, u2, u3, data_size, u4, samples) = \
25 struct.unpack(self.nwa_fmt, data[0:struct.calcsize(self.nwa_fmt)])
26 riff_size = 36 + samples*(depth/8)
27 # 16 = size of "fmt" section
28 # 1 = PCM format
29 header = struct.pack(self.wav_fmt, "RIFF", riff_size, "WAVE",
30 "fmt ", 16, 1, channels, rate,
31 rate*(depth/8), rate*(depth/8)*channels, depth, "data", data_size)
32 return header + data[struct.calcsize(self.nwa_fmt):]

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