METHOD AND AN APPARATUS FOR PROCESSING A SIGNAL

• US 20100312567A1
• Filed: 10/15/2008
• Published: 12/09/2010
• Est. Priority Date: 10/15/2007
• Status: Active Grant

• Current Assignee: Intellectual Discovery Co., Ltd.
• Original Assignee: Industry Academic Cooperation Foundation, LG Electronics, Inc. (LG Corporation)
• Inventors: Shin, Sang Wook, Oh, Hyen-O, Jung, Yang Won, Kang, Hong Goo, Lee, Chang Heon
• Granted Patent: US 8,566,107 B2
• Time in Patent Office: Days
• US Class Current: 704/500
• CPC Class Codes: G10L 19/20 using sound class specific coding, hybrid encoders or object based coding

Abstract

Disclosed is a method of processing a signal, which includes receiving at least one of a first signal and a second signal, receiving mode information, and coding the at least one of the first signal and the second signal using at least one of a first coding scheme and a second coding scheme according to the mode information, wherein the mode information is information for indicating that a prescribed mode corresponds to which one of at least three modes.

Claims

1. A method of processing a signal, comprising:

receiving at least one of a first signal and a second signal;

receiving mode information; and

coding the at least one of the first signal and the second signal using at least one of a first coding scheme and a second coding scheme according to the mode information,

wherein the mode information is information for indicating that a prescribed mode corresponds to which one of at least three modes.

2. The method of claim 1, wherein the at least three modes include a first mode for using the first coding scheme, a second mode for using both of the first coding scheme and the second coding scheme, and a third mode for using the second coding scheme.

3. The method of claim 1, wherein the mode information is represented as at least two flag informations.

4. The method of claim 1, wherein the mode information further includes bit rate information allocated to each of the first coding scheme and the second coding scheme, and wherein the mode information is determined through a plurality of Fourier transforms.

5. The method of claim 1, wherein the first coding scheme corresponds to a speech coding scheme, and wherein the second coding scheme corresponds to an audio coding scheme.

6. The method of claim 1, wherein the first signal corresponds to a harmonic signal, wherein the second signal corresponds to a residual signal, and wherein the second signal is obtained from a signal resulting from subtracting the first signal from an input signal.

7. The method of claim 1, wherein the mode information includes a first frame mode as the mode information on a first frame and a second frame mode as the mode information on a second frame, and wherein the method further comprises if the first frame mode is a first mode and the second frame mode is a third mode or if the first frame mode is the third mode and the second frame mode is the first mode, changing at least one of the first frame mode and the second frame mode into a second mode.

8. An apparatus for processing a signal, comprising:

a receiving unit receiving at least one of a first signal and a second signal, the receiving unit receiving mode information; and

a coding unit coding the at least one of the first signal and the second signal using at least one of a first coding scheme and a second coding scheme according to the mode information,

wherein the mode information is information for indicating that a prescribed mode corresponds to which one of at least three modes.

9. The apparatus of claim 8, wherein the at least three modes include a first mode for using the first coding scheme, a second mode for using both of the first coding scheme and the second coding scheme, and a third mode for using the second coding scheme.

10. The apparatus of claim 8, wherein the mode information is represented as at least two flag informations.

11. The apparatus of claim 8, wherein the mode information further includes bit rate information allocated to each of the first coding scheme and the second coding scheme, and wherein the mode information is determined through a plurality of Fourier transforms.

12. The apparatus of claim 8, wherein the first coding scheme corresponds to a speech coding scheme, and wherein the second coding scheme corresponds to an audio coding scheme.

13. The apparatus of claim 8, wherein the first signal corresponds to a harmonic signal, wherein the second signal corresponds to a residual signal, and wherein the second signal is obtained from a signal resulting from subtracting the first signal from an input signal.

14. The apparatus of claim 8, wherein the mode information includes a first frame mode as the mode information on a first frame and a second frame mode as the mode information on a second frame, and wherein if the first frame mode is a first mode and the second frame mode is a third mode or if the first frame mode is the third mode and the second frame mode is the first mode, the coding unit changes at least one of the first frame mode and the second frame mode into a second mode.

15. A method of processing a signal, comprising:

extracting a first signal from an input signal;

determining mode information from the input signal and the first signal;

generating a second signal based on the input signal and the first signal; and

encoding the first signal using a first coding scheme according to the mode information and encoding the second signal using a second coding scheme according to the mode information.