<commit_before>#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""Spectral feature extraction"""
from warnings import warn

import numpy as np
import scipy
import scipy.signal

from .. import util
from .. import filters
from ..util.exceptions import ParameterError

from ..core.time_frequency import fft_frequencies
from ..core.audio import zero_crossings, to_mono
from ..core.spectrum import logamplitude, _spectrogram
from ..core.constantq import cqt, hybrid_cqt
from ..core.pitch import estimate_tuning


__all__ = ['spectral_centroid',
           'spectral_bandwidth',<commit_msg>Removed unused import<commit_after>#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""Spectral feature extraction"""
import numpy as np
import scipy
import scipy.signal

from .. import util
from .. import filters
from ..util.exceptions import ParameterError

from ..core.time_frequency import fft_frequencies
from ..core.audio import zero_crossings, to_mono
from ..core.spectrum import logamplitude, _spectrogram
from ..core.constantq import cqt, hybrid_cqt
from ..core.pitch import estimate_tuning


__all__ = ['spectral_centroid',
           'spectral_bandwidth',
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