Acoustic processing device and acoustic processing method

An acoustic processing device, comprising:

• an inputting section which receives a first audio signal and a second audio signal;
• a first input signal amplifying section which amplifies the first audio signal at a predetermined amplification factor;
• a second input signal amplifying section which amplifies the second audio signal at a predetermined amplification factor;
• a first initial delayed amplifying section having:
• a delay portion for delaying the first audio signal to give a predetermined delay time;
• a first amplifying portion for amplifying the delayed first audio signal at a first amplification factor;
• and
• a second amplifying portion for amplifying the delayed first audio signal at a second amplification factor;
• a first adding section which adds the first audio signal amplified by the first amplifying portion and the first audio signal amplified by the first input signal amplifying section;
• a second adding section which adds the first audio signal amplified by the second amplifying portion and the second audio signal amplified by the second input signal amplifying section;
• a first supplying section which supplies an audio signal output from the first adding section to a first sound emitting section;
• a second supplying section which supplies an audio signal output from the second adding section to a second sound emitting section being different from the first sound emitting section;
• a synthesizing section which adds the first audio signal and the second audio signal to output an added signal as a synthesized audio signal;
• and
• a space reflected sound generating section including:
• a first space delayed amplifying section which has a delay portion for delaying the synthesized audio signal output from the synthesizing section to give a predetermined delay time and an amplifying portion for amplifying the delayed synthesized audio signal at a predetermined amplification factor to output a first amplified signal to the first supplying section;
• and
• a second space delayed amplifying section which has a delay portion for delaying the synthesized audio signal output from the synthesizing section to give a predetermined delay time and an amplifying portion for amplifying the delayed synthesized audio signal at a predetermined amplification factor to output a second amplified signal to the second supplying section.