Graphical audio signal control

A computer-implemented method comprising:

• an acquisition step of acquiring audio signals of individual ones of a plurality of channels;
• a step of converting the audio signal of each of the channels, acquired by said acquisition section, into a frequency spectra set of the channel;
• a calculation step of extracting frequency-dependent feature amounts from the acquired audio signals and calculating, in correspondence with each frequency component, a relation value corresponding to relationship in the feature amount between the channels;
• a step of displaying results of calculation by said calculation step by use of a coordinate system having a frequency coordinate axis and a coordinate axis of the relation value;
• a step of setting a partial region of the coordinate system as a designated region;
• a step of setting a level adjusting amount to be used for the designated region;
• a level change step of extracting, from the results of calculation, frequency components included in the designated region and changing amplitude levels of the extracted frequency components of the frequency spectra in accordance with the adjusting amount;
• and
• a step of synthesizing the frequency spectra, having been changed in the amplitude level by said level change step, for each of the channels and converting the synthesized frequency spectra into an audio signal of the channel,
• wherein said step of displaying is capable of selectively displaying any of a plurality of display windows on the display screen, each of the display windows displaying the results of calculation by said calculation step, and
• wherein, for each of the display windows, a particular designated region can be set by said step of setting a partial region, and a particular level adjusting amount can be set by said step of setting a level adjusting amount in association with the particular designated region.

A non-transitory computer-readable medium containing a program for causing a processor to execute the steps of:

• an acquisition step of acquiring audio signals of individual ones of a plurality of channels;
• a step of converting the audio signal of each of the channels, acquired by said acquisition section, into a frequency spectra set of the channel;
• a calculation step of extracting frequency-dependent feature amounts from the acquired audio signals and calculating, in correspondence with each frequency component, a relation value corresponding to relationship in the feature amount between the channels;
• a step of displaying results of calculation by said calculation step by use of a coordinate system having a frequency coordinate axis and a coordinate axis of the relation value;
• a step of setting a partial region of the coordinate system as a designated region;
• a step of setting a level adjusting amount to be used for the designated region;
• a level change step of extracting, from the results of calculation, frequency components included in the designated region and changing amplitude levels of the extracted frequency components of the frequency spectra in accordance with the adjusting amount;
• and
• a step of synthesizing the frequency spectra, having been changed in the amplitude level by said level change step, for each of the channels and converting the synthesized frequency spectra into an audio signal of the channel,
• wherein said step of displaying is capable of selectively displaying any of a plurality of display windows on the display screen, each of the display windows displaying the results of calculation by said calculation step, and
• wherein, for each of the display windows, a particular designated region can be set by said step of setting a partial region, and a particular level adjusting amount can be set by said step of setting a level adjusting amount in association with the particular designated region.