Patent ID: 6987858

Claim:
A signal processing method comprising: an adjusting step of causing a plurality of adjusting devices that are arranged in series at a plurality of adjusting points on each of a plurality of signal paths along which sound signals that are input are transmitted, to adjust at least one of sound volume and sound quality of a corresponding one of the input sound signals at the plurality of adjusting points on each of the plurality of signal paths along which the corresponding input signal is transmitted; a synthesizing step of causing a bus device that is connected to an output side of the plurality of signal paths, to synthesize the input sound signals that have been adjusted by the adjusting devices on the plurality of signal paths and outputted from the plurality of signal paths; a condition determining step of determining whether the corresponding input sound signal satisfies a condition that a level of the corresponding input sound signal exceeds a predetermined value at each of a plurality of metering points on each of the plurality of signal paths along which the corresponding input sound signal is transmitted, wherein each of the adjusting points is arranged in between two adjacent ones of the plurality of metering points; a designating step of designating one of the plurality of metering points based on a designation by a user; a display step of causing a display device to display a current state of the input sound signals being transmitted along respective ones of the signal paths, the display device having a level display section, a first alarm display section, and a second alarm display section, said level display section, said first alarm display section, and said second alarm display section being provided for each of said plurality of signal paths; a level displaying step of causing the level display section to display the level of the input sound signal at the designated metering point of the corresponding signal path; a first alarm displaying step of causing the first alarm display section to display an alarm when the level of the input sound signal exceeds the predetermined value at any one of the metering points of the corresponding signal path; and a second alarm displaying step of causing the second alarm display section to display an alarm when the level of the input sound signal exceeds the predetermined value at the designated metering point of the corresponding signal path.