Invention Grant
US09015041B2 Time warp activation signal provider, audio signal encoder, method for providing a time warp activation signal, method for encoding an audio signal and computer programs
有权
时间扭曲激活信号提供器，音频信号编码器，用于提供时间扭曲激活信号的方法，用于编码音频信号的方法和计算机程序
- Patent Title: Time warp activation signal provider, audio signal encoder, method for providing a time warp activation signal, method for encoding an audio signal and computer programs
- Patent Title (中): 时间扭曲激活信号提供器，音频信号编码器，用于提供时间扭曲激活信号的方法，用于编码音频信号的方法和计算机程序
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Application No.: US13004525Application Date: 2011-01-11
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Publication No.: US09015041B2Publication Date: 2015-04-21
- Inventor: Stefan Bayer , Sascha Disch , Ralf Geiger , Guillaume Fuchs , Max Neuendorf , Gerald Schuller , Bernd Edler
- Applicant: Stefan Bayer , Sascha Disch , Ralf Geiger , Guillaume Fuchs , Max Neuendorf , Gerald Schuller , Bernd Edler
- Applicant Address: DE Munich
- Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
- Current Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
- Current Assignee Address: DE Munich
- Agency: Perkins Coie LLP
- Agent Michael A. Glenn
- Main IPC: G10L19/12
- IPC: G10L19/12 ; G10L21/00 ; G10L19/00 ; G10L21/04 ; G10L19/002 ; G10L19/028
Abstract:
An audio encoder has a window function controller, a windower, a time warper with a final quality check functionality, a time/frequency converter, a TNS stage or a quantizer encoder, the window function controller, the time warper, the TNS stage or an additional noise filling analyzer are controlled by signal analysis results obtained by a time warp analyzer or a signal classifier. Furthermore, a decoder applies a noise filling operation using a manipulated noise filling estimate depending on a harmonic or speech characteristic of the audio signal.
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