(self, gain=-20.0, frequency=100, slope=0.5)
return self
lowshelf takes 3 parameters: a signed number for gain or attenuation
        in dB, filter frequency in Hz and slope (default=0.5, maximum=1.0).

        Beware of Clipping when using positive gain.
lowshelf takes 3 parameters: a signed number for gain or attenuation
        in dB, filter frequency in Hz and slope (default=0.5, maximum=1.0).
lowshelf takes 3 parameters : a signed number for gain or attenuation in dB filter frequency in Hz and slope ( default = 0 . 5 maximum = 1 . 0 ) .
def lowshelf(self, gain=-20.0, frequency=100, slope=0.5):
        """lowshelf takes 3 parameters: a signed number for gain or attenuation
        in dB, filter frequency in Hz and slope (default=0.5, maximum=1.0).

        Beware of Clipping when using positive gain.
        """
        self.command.append('bass')
        self.command.append(gain)
        self.command.append(frequency)
        self.command.append(slope)
        return self
def lowshelf ( self , gain = - 20.0 , frequency = 100 , slope = 0.5 ) : self . command . append ( 'bass' ) self . command . append ( gain ) self . command . append ( frequency ) self . command . append ( slope ) return self