Sound reproducing apparatus and sound reproducing method

A sound reproducing apparatus in which audio data input through input channels are generated as virtual sources by a Head Related Transfer Function (HRTF) and a sound signal resulting from the generated virtual sources is output through a speaker, comprising:

• an actual listening environment feature function database where a speaker feature function measured at a listening position of a listener is stored for correcting the virtual sources in response to a feature of a speaker provided at the time of listening;
• a speaker feature correcting unit reading out the speaker feature function stored in the actual listening environment feature function database, and correcting the virtual sources based on the reading result;
• and
• a low pass filter disposed between the actual listening environment feature function database and the speaker feature correcting unit,
• wherein an actual listening space feature function stored in the actual listening environment feature function database comprises a direct sound function portion and a reflected sound function portion,
• the low pass filter receives the actual listening environment feature function from the actual listening environment feature function database, extracts the direct sound function portion from the actual listening space feature function and outputs only the direct sound function portion as the speaker feature function to the speaker feature correcting unit, and
• the speaker feature correcting unit corrects the virtual sources based on the direct sound function portion extracted by the low pass filter.

A sound reproducing apparatus in which audio data input through input channels are generated as virtual sources by a Head Related Transfer Function (HRTF) and a sound signal resulting from the generated virtual sources is output through a speaker, comprising:

• a virtual listening space parameter storing unit storing a virtual listening space parameter set to allow the sound signal resulted from the virtual sources to be output to an expected optimal listening space;
• a virtual listening space correcting unit reading out the virtual listening space parameter stored in the virtual listening space parameter storing unit, and correcting the virtual sources based on the reading result;
• and
• a band pass filter disposed between the virtual listening space parameter storing unit and the virtual listening space correcting unit,
• wherein the virtual listening space parameter comprises a first reflected sound function portion and a late reflected sound function portion,
• the band pass filter extracts the first reflected sound function portion from the virtual listening space parameter output from the virtual listening space parameter storing unit and outputs only the first reflected sound function portion to the virtual listening space correcting unit, and
• the virtual listening space correcting unit corrects the virtual sources based on the first reflected sound function portion extracted by the band pass filter.