def logfreqs(notemin=0, notemax=139, notedelta=1.0):
    """
    Return a list of frequencies corresponding to the pitch range given

    notemin, notemax, notedelta: as used in arange (notemax is included)

    Examples:

    1) generate a list of frequencies of all audible semitones
    
    >>> logfreqs(0, 139, notedelta=1)

    2) Generate a list of frequencies of instrumental 1/4 tones

    >>> logfreqs(n2m("A0"), n2m("C8"), 0.5) 
    """
    from emlib import pitchnp
    return pitchnp.logfreqs(notemin=notemin, notemax=notemax, notedelta=
        notedelta)
