Noise reduction apparatus and audio reproduction apparatus

A noise reduction apparatus comprising:

• a speaker with a speaker unit held by a holding unit, the speaker configured as a bare speaker in which the speaker unit is not housed in a speaker box and is not attached to a baffle plate, to enable mixing a first sound emitted from a first side of a vibration plate of the speaker with a second sound emitted from a second side of the vibration plate of the speaker;
• a microphone provided in an area where the mixing of the first and second sounds results in cancellation of each of the first and second sounds;
• and
• a unit configured to supply to the speaker a noise reduction audio signal, wherein the noise reduction audio signal is obtained by phase-inverting a noise audio signal collected by the microphone and performing correction based on a space transfer function between a first position of a source of a noise sound and a second position where the noise sound is to be reduced.

A noise reduction method comprising:

• reproducing noise reduction sounds using a speaker with a speaker unit held by holding means;
• mixing a first sound emitted from a first side of a vibration plate of the speaker with a second sound emitted from a second side of the vibration plate of the speaker;
• cancelling each of the first and second sounds in an area of reduced sound pressure;
• collecting noise audio sounds using a microphone that is provided in the area of reduced sound pressure;
• and
• supplying to the speaker a noise reduction audio signal, wherein the noise reduction audio signal is obtained by phase-inverting a noise audio signal corresponding to the noise audio sounds collected by the microphone and performing correction based on a space transfer function between a first position of a source of a noise sound and a second position where the noise sound is to be reduced.