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class AudioMetaData:
"""AudioMetaData()
Return type of ``torchaudio.info`` function.
:ivar int sample_rate: Sample rate
:ivar int num_frames: The number of frames
:ivar int num_channels: The number of channels
:ivar int bits_per_sample: The number of bits per sample. This is 0 for lossy formats,
or when it cannot be accurately inferred.
:ivar str encoding: Audio encoding
The values encoding can take are one of the following:
* ``PCM_S``: Signed integer linear PCM
* ``PCM_U``: Unsigned integer linear PCM
* ``PCM_F``: Floating point linear PCM
* ``FLAC``: Flac, Free Lossless Audio Codec
* ``ULAW``: Mu-law
* ``ALAW``: A-law
* ``MP3`` : MP3, MPEG-1 Audio Layer III
* ``VORBIS``: OGG Vorbis
* ``AMR_WB``: Adaptive Multi-Rate Wideband
* ``AMR_NB``: Adaptive Multi-Rate Narrowband
* ``OPUS``: Opus
* ``HTK``: Single channel 16-bit PCM
* ``UNKNOWN`` : None of above
"""
def __init__(
self,
sample_rate: int,
num_frames: int,
num_channels: int,
bits_per_sample: int,
encoding: str,
):
self.sample_rate = sample_rate
self.num_frames = num_frames
self.num_channels = num_channels
self.bits_per_sample = bits_per_sample
self.encoding = encoding
def __str__(self):
return (
f"AudioMetaData("
f"sample_rate={self.sample_rate}, "
f"num_frames={self.num_frames}, "
f"num_channels={self.num_channels}, "
f"bits_per_sample={self.bits_per_sample}, "
f"encoding={self.encoding}"
f")"
)
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