METHOD AND APPARATUS TO REPRODUCE STEREO SOUND OF TWO CHANNELS BASED ON INDIVIDUAL AUDITORY PROPERTIES
First Claim
Patent Images
1. A stereo sound reproducing method, comprising:
- generating one or more virtual surround filters corresponding to one or more HRTFs (head-related transfer functions) classified according to one or more individual auditory properties, generating stereo sound for the one or more virtual surround filters, and selecting at least one from among the one or more virtual surround filters; and
reproducing the stereo sound based on a filter value of the selected at least one virtual surround filter.
1 Assignment
0 Petitions
Accused Products
Abstract
A method and apparatus to reproduce stereo sound, which generates optimal stereo sound designed for individual auditory properties. The method includes generating a one or more virtual surround filters corresponding to each of a plurality of head-related transfer functions (HRTFs) classified according to one or more individual auditory properties, generating stereo sound for the one or more virtual surround filters, and selecting at least one from the one or more virtual surround filters, and reproducing the stereo sound based on a filter value of the selected at least one virtual surround filter.
-
Citations
22 Claims
-
1. A stereo sound reproducing method, comprising:
-
generating one or more virtual surround filters corresponding to one or more HRTFs (head-related transfer functions) classified according to one or more individual auditory properties, generating stereo sound for the one or more virtual surround filters, and selecting at least one from among the one or more virtual surround filters; and reproducing the stereo sound based on a filter value of the selected at least one virtual surround filter. - View Dependent Claims (2, 3, 4)
-
-
5. A stereo sound reproducing apparatus comprising:
-
an auditory properties correction unit to generate stereo sound for one or more virtual surround filters corresponding to each of a plurality of HRTFs classified according to individual auditory properties and to select at least one from the one or more virtual surround filters; and a stereo sound generator to generate a multi-channel signal as a 2-channel stereo sound based on a filter value of the at least one virtual surround filter selected by the auditory properties correction unit. - View Dependent Claims (6, 7, 8, 9, 10)
-
-
11. An apparatus to reproduce stereo sound by which a multi-channel audio signal is reproduced as a 2-channel output, the apparatus comprising:
-
an auditory properties correction unit to generate one or more virtual surround filters corresponding to each of a plurality of HRTFs classified according to one or more individual auditory properties, generating stereo sound for each of the one or more virtual surround filters, and selecting at least one from the one or more virtual surround filters; a virtual surround filter unit to convert a 2-channel audio signal into a 2-channel virtual surround audio signal according to the at least one virtual surround filter selected by the auditory properties correction unit; a signal correction filter unit to correct one or more signal characteristics between the 2-channel virtual surround audio signals output by the virtual surround filter unit and other channel audio signals than the 2-channel virtual surround audio signals; and an addition unit to add the channel signals output by the virtual surround filter unit and the signal correction filter unit.
-
-
12. A computer-readable recording medium having embodied thereon a computer program to execute a method, wherein the method comprises:
-
generating one or more virtual surround filters corresponding to each of a plurality of HRTFs classified according to one or more individual auditory properties, generating stereo sound for each of the one or more virtual surround filters, and selecting at least one from among the one or more virtual surround filters; and reproducing the stereo sound based on a filter value of the selected at least one virtual surround filter.
-
-
13. An apparatus to produce stereo sound, the apparatus comprising:
-
a virtual surround filter unit to receive a first multi-channel audio signal, and to generate plurality of surround signals; wherein the plurality of surround signals corresponds with one or more individual auditory properties. - View Dependent Claims (14, 15)
-
-
16. A method of reproducing stereo sound, the method comprising:
-
generating a plurality of surround signals from a first multi-channel audio signal corresponding to one or more individual auditory properties; generating a plurality of corrected signals from a second multi-channel audio signal; adding one of the plurality of surround signals and one of the plurality of corrected signals to form a left channel signal; and adding an other of the plurality of surround signals and an other of the plurality of corrected signals to form a right channel signal.
-
-
17. A stereo sound reproducing apparatus, comprising:
-
an auditory properties correction unit to select at least one virtual surround filter corresponding to one or more individual auditory characteristics; and a stereo sound generator to generate a two-channel stereo sound based on a filter value of the at least one virtual surround filter selected by the auditory properties correction unit.
-
-
18. A stereo sound reproducing system, comprising:
-
an auditory properties correction unit to localize a virtual signal source in an elevated direction based on one or more individual auditory properties; and a stereo sound generator to generate a multi-channel stereo sound in response to the auditory properties correction unit.
-
-
19. A stereo sound reproducing apparatus to process a multi-channel audio signal, the apparatus comprising:
-
a signal correction filter unit to process a first group of channels of the multi-channel audio signal to generate a first signal and a second signal; a virtual surround filter unit to process a second group of channels of the multi-channel audio signal according to one or more virtual surround filters corresponding to one or more HRTFs and one or more individual auditory properties, to generate a first surround signal and a second surround signal; and an addition unit to add the first signal and the first surround signal to generate a first speaker signal, and to add the second signal and the second surround signal to generate a second speaker signal. - View Dependent Claims (20)
-
-
21. A stereo sound reproducing apparatus to process a multi-channel audio signal, the apparatus comprising:
a stereo sound generator having one or more filter units to process surround channels according to one or more filter coefficients corresponding to at least one of individual auditory properties to generate first and second surround signals. - View Dependent Claims (22)
Specification