def power_spectrum(self, input_filepath):
        '''Calculates the power spectrum (4096 point DFT). This method
        internally invokes the stat command with the -freq option.

        Note: The file is downmixed to mono prior to computation.

        Parameters
        ----------
        input_filepath : str
            Path to input file to compute stats on.

        Returns
        -------
        power_spectrum : list
            List of frequency (Hz), amplitude pairs.

        See Also
        --------
        stat, stats, sox.file_info
        '''
        effect_args = ['channels', '1', 'stat', '-freq']

        _, _, stat_output = self.build(
            input_filepath, None, extra_args=effect_args, return_output=True
        )

        power_spectrum = []
        lines = stat_output.split('\n')
        for line in lines:
            split_line = line.split()
            if len(split_line) != 2:
                continue

            freq, amp = split_line
            power_spectrum.append([float(freq), float(amp)])

        return power_spectrum
def power_spectrum(self, input_filepath):
        '''Calculates the power spectrum (4096 point DFT). This method
        internally invokes the stat command with the -freq option.

        Note: The file is downmixed to mono prior to computation.

        Parameters
        ----------
        input_filepath : str
            Path to input file to compute stats on.

        Returns
        -------
        power_spectrum : list
            List of frequency (Hz), amplitude pairs.

        See Also
        --------
        stat, stats, sox.file_info
        '''
        effect_args = ['channels', '1', 'stat', '-freq']

        _, _, stat_output = self.build(
            input_filepath, None, extra_args=effect_args, return_output=True
        )

        power_spectrum = []
        lines = stat_output.split('\n')
        for line in lines:
            split_line = line.split()
            if len(split_line) != 2:
                continue

            freq, amp = split_line
            power_spectrum.append([float(freq), float(amp)])

        return power_spectrum
def power_spectrum ( self , input_filepath ) : effect_args = [ 'channels' , '1' , 'stat' , '-freq' ] _ , _ , stat_output = self . build ( input_filepath , None , extra_args = effect_args , return_output = True ) power_spectrum = [ ] lines = stat_output . split ( '\n' ) for line in lines : split_line = line . split ( ) if len ( split_line ) != 2 : continue freq , amp = split_line power_spectrum . append ( [ float ( freq ) , float ( amp ) ] ) return power_spectrum
Calculates the power spectrum (4096 point DFT). This method
        internally invokes the stat command with the -freq option.

        Note: The file is downmixed to mono prior to computation.

        Parameters
        ----------
        input_filepath : str
            Path to input file to compute stats on.

        Returns
        -------
        power_spectrum : list
            List of frequency (Hz), amplitude pairs.

        See Also
        --------
        stat, stats, sox.file_info
Calculates the power spectrum ( 4096 point DFT ) . This method internally invokes the stat command with the - freq option .