Method and apparatus for outputting sound source signal by using virtual speaker

An apparatus for outputting a sound source signal, the apparatus comprising:

• a virtual signal generator which generates from an input sound source signal a virtual sound source signal delayed by a virtual delay value which is less than a minimum delay value, the minimum delay value being equal to a sampling interval of the input sound source signal;
• a speaker signal generator which generates a speaker output signal in which the sampling interval is changed based on the input sound source signal and the generated virtual sound source signal;
• and
• a signal output unit which outputs the generated speaker output signal,
• wherein the virtual signal generator comprises:
• a delay value determining unit which determines the virtual delay value;
• and
• a filter which filters the virtual sound source signal out from the input sound source signal, the virtual sound source signal being delayed by the determined virtual delay value.