Abstract: A method of processing a 2-channel stereo sound signal into a spatial stereo sound includes generating stereo signals of first and second channels from a first input channel signal and a second input channel signal by applying a time difference of times taken for each channel signal to arrive at two ears, and a sound pressure difference formed between the two ears and varying with respect to a frequency band or constant, to each of the first and second input channel signals, generating a center channel of the first and second channel by adding the first and second input channel signals, generating a surround signal of the first channel by subtracting one of the first and second input channel signals, from the other one of the first and second input channel signals, and generating a surround signal of the second channel by making the surround signal of the first channel out of phase, generating a plurality of reflected sounds from the generated surround signals, and applying the time difference and the sound p

Abstract: A spatial sound generation method and apparatus by which reflected sounds of an input sound signal are generated and by using the reflected sounds, a spatial sound is generated. The method includes delaying an input signal by applying a specified number of a plurality of delay values to the input signal to generate the specified number of a plurality of reflected sound signals, multiplying each of the delayed reflected sounds by a respective predetermined gain value, and generating additional reflected sounds from each of the gain-multiplied reflected sounds through a feedback loop comprises a delay value and a gain value that are specific for its corresponding gain-multiplied reflected sound signal.

Abstract: A stereo sound generation method and apparatus to generate a stereo sound, by using 2-channel headphones, earphones, or speakers, from a multi-channel sound signal reproduced through a variety of media such as a DVD-video, and a DVD-audio. The stereo sound generation method of generating a 2-channel stereo sound from a 5.

Abstract: A stereo sound generation method and apparatus to generate a stereo sound, by using 2-channel headphones, earphones, or speakers, from a multi-channel sound signal reproduced through a variety of media such as a DVD-video, and a DVD-audio. The stereo sound generation method of generating a 2-channel stereo sound from a 5.

Abstract: A method of processing a 2-channel stereo sound signal into a spatial stereo sound includes generating stereo signals of first and second channels from a first input channel signal and a second input channel signal by applying a time difference of times taken for each channel signal to arrive at two ears, and a sound pressure difference formed between the two ears and varying with respect to a frequency band or constant, to each of the first and second input channel signals, generating a center channel of the first and second channel by adding the first and second input channel signals, generating a surround signal of the first channel by subtracting one of the first and second input channel signals, from the other one of the first and second input channel signals, and generating a surround signal of the second channel by making the surround signal of the first channel out of phase, generating a plurality of reflected sounds from the generated surround signals, and applying the time difference and the sound p

Abstract: A spatial sound generation method and apparatus by which reflected sounds of an input sound signal are generated and by using the reflected sounds, a spatial sound is generated. The method includes delaying an input signal by applying a specified number of a plurality of delay values to the input signal to generate the specified number of a plurality of reflected sound signals, multiplying each of the delayed reflected sounds by a respective predetermined gain value, and generating additional reflected sounds from each of the gain-multiplied reflected sounds through a feedback loop comprises a delay value and a gain value that are specific for its corresponding gain-multiplied reflected sound signal.

Abstract: A method and apparatus to generate a stereo sound for two-channel headphones from a multi-channel audio signal reproduced from a recording medium. The method may include generating a direct sound and reflected sounds by delaying one of a plurality of channel signals using a plurality of different delay coefficients, multiplying the generated sounds by predetermined different gain values, dividing the multiplied sounds into left and right channel sounds by reflecting a time difference between two ears of a listener on each of the multiplied sounds, low-pass-filtering the left and right channel sounds by reflecting a level difference between the two ears of the listener on each of the left and right channel sounds, and adding together the low-pass-filtered left channel sounds and the low-pass-filtered right channel sounds, respectively.