US 11,996,107 B2
Sound signal receiving and decoding method, sound signal encoding and transmitting method, sound signal decoding method, sound signal encoding method, sound signal receiving side apparatus, sound signal transmitting side apparatus, decoding apparatus, encoding apparatus, program and storage medium
Takehiro Moriya, Tokyo (JP); Yutaka Kamamoto, Tokyo (JP); and Ryosuke Sugiura, Tokyo (JP)
Assigned to NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo (JP)
Appl. No. 17/617,759
Filed by NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo (JP)
PCT Filed Dec. 27, 2019, PCT No. PCT/JP2019/051597
§ 371(c)(1), (2) Date Dec. 9, 2021,
PCT Pub. No. WO2020/250472, PCT Pub. Date Dec. 17, 2020.
Claims priority of application No. PCT/JP2019/023425 (WO), filed on Jun. 13, 2019.
Prior Publication US 2022/0238122 A1, Jul. 28, 2022
Int. Cl. G10L 19/00 (2013.01); G10L 19/008 (2013.01)
CPC G10L 19/008 (2013.01) [G10L 19/0017 (2013.01)] 34 Claims
OG exemplary drawing
 
1. A sound signal receiving and decoding method to be performed by a terminal apparatus connected to a first communication line and a second communication line with a lower priority level than the first communication line, the method comprising:
a reception step of, for each frame, if an extended code with the same frame number as a monaural code included in a first code string input from the first communication line is included in extended codes included in a second code string input from the second communication line, outputting the monaural code included in the first code string input from the first communication line and the extended code with the same frame number as the monaural code, and
if an extended code with the same frame number as the monaural code included in the first code string input from the first communication line is not included in the extended codes included in the second code string input from the second communication line, outputting the monaural code included in the first code string input from the first communication line and an extended code with the closest frame number to that of the monaural code among the extended codes included in the second code string input from the second communication line; and
a decoding step of, for each frame, obtaining and outputting decoded digital sound signals of C (C being an integer that is at least 2) channels based on the monaural code output in the reception step and the extended code output in the reception step.