Patent ID: 9002035
Filing Date: 2015-04-07
Classification: G10H,G11B,H03G,H04R,H04S

Abstract:
1. A signal processing apparatus comprising: an acquisition section which acquires audio signals of individual ones of a plurality of channels; a first conversion section which converts the audio signal of each of the channels, acquired by said acquisition section, into a frequency spectra set of the channel; a calculation section which extracts frequency-dependent feature amounts from the acquired audio signals and calculates, in correspondence with each frequency component, a relation value corresponding to relationship in the feature amount between the channels; a display control section which displays results of calculation by said calculation section by use of a coordinate system having a frequency coordinate axis and a coordinate axis of the relation value; a region setting section which sets a partial region of the coordinate system as a designated region; an adjusting amount setting section which sets a level adjusting amount for the designated region; a level change section which extracts, from the results of calculation, frequency components included in the designated region and changes amplitude levels of the extracted frequency components of the frequency spectra in accordance with the adjusting amount; and a second conversion section which synthesizes the frequency spectra, having been changed in the amplitude level by said level change section, for each of the channels and converts the synthesized frequency spectra into an audio signal of the channel, wherein said display control section 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 section, and wherein, for each of the display windows, a particular designated region can be set by said region setting section, and a particular level adjusting amount can be set by said adjusting amount setting section in association with the particular designated region.