Invention Grant
- Patent Title: Encoder, decoder and methods for signal-adaptive switching of the overlap ratio in audio transform coding
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Application No.: US15933149Application Date: 2018-03-22
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Publication No.: US10770084B2Publication Date: 2020-09-08
- Inventor: Christian Helmrich , Bernd Edler , Tobias Schwegler , Florian Schuh
- Applicant: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- Applicant Address: DE
- Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- Current Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- Current Assignee Address: DE
- Agency: Haynes and Boone, LLP
- Main IPC: G10L19/00
- IPC: G10L19/00 ; G10L21/00 ; G10L21/04 ; G10L19/022 ; G10L19/02 ; G06F17/11 ; G06F17/14 ; G10L19/032 ; G10L19/24 ; G10L19/22
Abstract:
A decoder for decoding a plurality of spectral-domain audio samples is provided. The decoder includes a first decoding module for generating a first group and a second group of time-domain intermediate audio samples from the spectral-domain audio samples. Moreover, the decoder includes an overlap-adder for overlap-adding the first group of time-domain intermediate audio samples with an overlap of more than 5% and at most 50% with the second group of time-domain intermediate audio samples. Furthermore, the decoder includes a second decoding module for generating a third group and a fourth group of time-domain intermediate audio samples from the spectral-domain audio samples. Moreover, the decoder includes an output interface.
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