公开(公告)号：US20240321280A1

公开(公告)日：2024-09-26

申请号：US18577225

申请日：2022-07-08

Applicant: Sony Group Corporation

Inventor： Akifumi Kono ,  Toru Chinen ,  Hiroyuki Honma ,  Mitsuyuki Hatanaka

IPC: G10L19/002 ,  G10L19/012 ,  G10L19/032

CPC classification number: G10L19/002 ,  G10L19/012 ,  G10L19/032

Abstract: The present technology relates to an encoding device and method, a decoding device and method, and a program that enable to improve an encoding efficiency in a state where a real-time operation is maintained.
The encoding device includes a priority information generation unit that generates priority information indicating a priority of an audio signal, on the basis of at least one of the audio signal or metadata of the audio signal, a time-frequency transform unit that performs time-frequency transform on the audio signal and generates an MDCT coefficient, and a bit allocation unit that quantizes the MDCT coefficient of the audio signal, in descending order of the priority of the audio signal indicated by the priority information, for a plurality of the audio signals. The present technology may be applied to the encoding device.

公开(公告)号：US20230253000A1

公开(公告)日：2023-08-10

申请号：US18013217

申请日：2021-06-25

Applicant: Sony Group Corporation

Inventor： Akifumi Kono ,  Toru Chinen ,  Hiroyuki Honma ,  Minoru Tsuji ,  Yoshiaki Oikawa

IPC: G10L19/035 ,  G10L19/008

CPC classification number: G10L19/035 ,  G10L19/008

Abstract: The present technology relates to a signal processing device, a signal processing method, and a program which are capable of improving encoding efficiency.
The signal processing device includes a correction unit configured to correct an audio signal of an audio object based on a gain value included in metadata of the audio object, and a quantization unit configured to calculate auditory psychological parameters based on a signal obtained by the correction and to quantize the audio signal. The present technology can be applied to an encoding device.

公开(公告)号：US20230300557A1

公开(公告)日：2023-09-21

申请号：US18023183

申请日：2021-08-20

Applicant: Sony Group Corporation

Inventor： Hiroyuki Honma ,  Toru Chinen ,  Akifumi Kono

IPC: H04S7/00 ,  G10L19/008 ,  H04S3/00 ,  G06N3/044 ,  G06N3/08

CPC classification number: H04S7/307 ,  G10L19/008 ,  H04S3/008 ,  G06N3/044 ,  G06N3/08 ,  H04S2420/07 ,  H04S2400/11 ,  H04S2420/01 ,  H04S2400/01

Abstract: The present technology relates to signal processing device and method, learning device and method, and a program that enable even an inexpensive device to perform audio replaying with high quality.
A signal processing device includes: a decoding processing unit that demultiplexes an input bit stream into a first audio signal, meta data of the first audio signal, and first high-frequency band information for expanding a band; a band expanding unit that performs band expansion processing on the basis of a second audio signal and second high-frequency band information and thereby generates an output audio signal, the second audio signal being obtained by performing signal processing on the basis of the first audio signal and the meta data, the second high-frequency band information being generated on the basis of the first high-frequency band information. The present technology can be applied to a smartphone.