'Load the :class:`AudioTrack` from an :class:`~enzyme.parsers.ebml.Element`
:param element: the Track element with :data:`AUDIO_TRACK` TrackType
:type element: :class:`~enzyme.parsers.ebml.Element`'

@classmethod
def fromelement(cls, element):

    audiotrack = super(AudioTrack, cls).fromelement(element)
    audiotrack.sampling_frequency = element['Audio'].get('SamplingFrequency', 8000.0)
    audiotrack.channels = element['Audio'].get('Channels', 1)
    audiotrack.output_sampling_frequency = element['Audio'].get('OutputSamplingFrequency')
    audiotrack.bit_depth = element['Audio'].get('BitDepth')
    return audiotrack
