公开(公告)号：US20240404531A1

公开(公告)日：2024-12-05

申请号：US18662842

申请日：2024-05-13

Applicant: Apple Inc.

Inventor： Moo Young Kim ,  Sina Zamani ,  Dipanjan Sen ,  Tejaswi Nanjundaswamy

IPC: G10L19/008 ,  H04S7/00

Abstract: A method that includes a decoder-side method that includes receiving a bitstream that includes an encoded representation of an input audio signal and metadata associated with the input audio signal, producing a decoded representation of the input audio signal by decoding the encoded representation using a Matching Pursuit (MP) coding-based algorithm, producing audio driver signals by rendering the input audio signal based on the metadata, and driving speakers using the audio driver signals.

公开(公告)号：US20250087222A1

公开(公告)日：2025-03-13

申请号：US18466688

申请日：2023-09-13

Applicant: Apple Inc.

Inventor： Ravi Kiran Chivukula ,  Dipanjan Sen ,  Tejaswi Nanjundaswamy

IPC: G10L19/02

Abstract: A target decoder may receive a bitstream including an audio frame in a target format associated with a target encoder and a metadata frame associated with the audio frame. The audio frame may be transcoded from an earlier audio frame. The metadata frame may be converted from an earlier metadata frame associated with the earlier audio frame. The target decoder may decode audio data from the audio frame and metadata from the metadata frame.

公开(公告)号：US20250087225A1

公开(公告)日：2025-03-13

申请号：US18466663

申请日：2023-09-13

Applicant: Apple Inc.

Inventor： Ravi Kiran Chivukula ,  Dipanjan Sen ,  Tejaswi Nanjundaswamy

IPC: G10L19/16

Abstract: A target encoder may receive, from a source decoder, a source bitstream including an audio frame and a metadata frame associated with the audio frame. The target encoder may transcode the audio frame to a new audio frame in a target format associated with the target encoder. The target encoder may convert the metadata frame into a new metadata frame associated with the new audio frame. The target encoder may then generate a target bitstream including the new audio frame and the new metadata frame. Other aspects are also described and claimed.