Method and apparatus for emulating sound

A method of emulating a sound of an audio apparatus by using a sound emulation apparatus, the method comprising:

• applying a characteristic function indicating an input/output relationship of the audio apparatus to a current sample of an audio signal;
• obtaining k past samples by delaying the current sample to which the characteristic function has been applied;
• and
• generating an emulation sound of the audio apparatus by adding the current sample to which the characteristic function has been applied and the k past samples.

A method of emulating a sound of an audio apparatus by using a sound emulation apparatus, the method comprising:

• applying a characteristic function indicating an input/output relationship of the audio apparatus to a current sample of an audio signal;
• obtaining k past samples to which the characteristic function has been applied, from a queue memory unit of the sound emulation apparatus;
• and
• generating an emulation sound of the audio apparatus by adding the current sample to which the characteristic function has been applied and the k past samples to which the characteristic function has been applied.

An apparatus which emulates a sound of an audio apparatus, the apparatus comprising:

• a sample delayer which obtains k past samples (where k is a natural number that is equal to or greater than 1) by delaying a current sample of an audio signal;
• a characteristic function applier which applies a plurality of characteristic functions indicating an input/output relationship of the audio apparatus to the current sample and the k past samples, respectively;
• and
• an adder which adds the current sample and the k past samples, to which the plurality of characteristic functions have been applied, respectively, to generate an emulation sound of the audio apparatus.

An apparatus which emulates a sound of an audio apparatus, the apparatus comprising:

• a characteristic function applier which applies a characteristic function indicating an input/output relationship of the audio apparatus to a current sample of an audio signal;
• a sample delayer which obtains k past samples by delaying the current sample to which the characteristic function has been applied;
• and
• an adder which generates an emulation sound of the audio apparatus by adding the current sample to which the characteristic function has been applied and the k past samples.

An apparatus which emulates a sound of an audio apparatus, the apparatus comprising:

• a characteristic function applier which applies a characteristic function indicating an input/output relationship of the audio apparatus to a current sample of an audio signal;
• a queue memory which obtains k past samples to which the characteristic function has been applied;
• and
• an adder which generates an emulation sound of the audio apparatus by adding the current sample to which the characteristic function has been applied and the k past samples to which the characteristic function has been applied.

An apparatus which emulates a sound of an audio apparatus, the apparatus comprising:

• a power sample obtainer which obtains a first power sample with respect to a current sample of an audio signal;
• a queue memory which applies a polynomial function indicating an input/output relationship of the audio apparatus to the first power sample and a second power sample with respect to at least one past sample of the audio signal, respectively;
• and
• an adder which generates an emulation sound of the audio apparatus by adding the first power sample to which the polynomial function has been applied and the second power sample to which the polynomial function has been applied.