发明名称 |
NOISE FILLING WITHOUT SIDE INFORMATION FOR CELP-LIKE CODERS |
摘要 |
<p>This invention relates to an audio decoder for providing a decoded audio information on the basis of an encoded audio information comprising linear prediction coefficients (LPC), a respective method, a respective computer program for performing such a method and an audio signal for a storage medium having stored such an audio signal, the audio signal having been treated with such a method. The audio decoder comprises a tilt adjuster configured to adjust a tilt of a noise using linear prediction coefficients of a current frame to obtain a tilt information and a noise inserter configured to add the noise to the current frame in dependence on the tilt information obtained by the tilt calculator. Another audio decoder according to the invention comprises a noise level estimator configured to estimate a noise level for a current frame using a linear prediction coefficient of at least one previous frame to obtain a noise level information; and a noise inserter configured to add a noise to the current frame in dependence on the noise level information provided by the noise level estimator. Thus, side information about a background noise in the bit-stream may be omitted.</p> |
申请公布号 |
WO2014118192(A3) |
申请公布日期 |
2014.10.09 |
申请号 |
WO2014EP51649 |
申请日期 |
2014.01.28 |
申请人 |
FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. |
发明人 |
FUCHS, GUILLAUME;HELMRICH, CHRISTIAN;JANDER, MANUEL;SCHUBERT, BENJAMIN;YOKOTANI, YOSHIKAZU |
分类号 |
G10L19/028 |
主分类号 |
G10L19/028 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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