Invention Grant
US09384755B2 Device and method for reducing quantization noise in a time-domain decoder
有权
用于减少时域解码器中的量化噪声的装置和方法
- Patent Title: Device and method for reducing quantization noise in a time-domain decoder
- Patent Title (中): 用于减少时域解码器中的量化噪声的装置和方法
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Application No.: US14196585Application Date: 2014-03-04
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Publication No.: US09384755B2Publication Date: 2016-07-05
- Inventor: Tommy Vaillancourt , Milan Jelinek
- Applicant: VOICEAGE CORPORATION
- Applicant Address: CA Town of Mount Royal
- Assignee: VOICEAGE CORPORATION
- Current Assignee: VOICEAGE CORPORATION
- Current Assignee Address: CA Town of Mount Royal
- Agency: Fay Kaplun & Marcin, LLP
- Main IPC: G10L21/0208
- IPC: G10L21/0208 ; G10L19/26 ; G10L25/78 ; G10L25/93 ; G10L25/21

Abstract:
The present disclosure relates to a device and method for reducing quantization noise in a signal contained in a time-domain excitation decoded by a time-domain decoder. The decoded time-domain excitation is converted into a frequency-domain excitation. A weighting mask is produced for retrieving spectral information lost in the quantization noise. The frequency-domain excitation is modified to increase spectral dynamics by application of the weighting mask. The modified frequency-domain excitation is converted into a modified time-domain excitation. The method and device can be used for improving music content rendering of linear-prediction (LP) based codecs. Optionally, a synthesis of the decoded time-domain excitation may be classified into one of a first set of excitation categories and a second set of excitation categories, the second set including INACTIVE or UNVOICED categories, the first set including an OTHER category.
Public/Granted literature
- US20140249807A1 DEVICE AND METHOD FOR REDUCING QUANTIZATION NOISE IN A TIME-DOMAIN DECODER Public/Granted day:2014-09-04
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