发明名称 |
Energy-based audio pattern recognition with weighting of energy matches |
摘要 |
An energy-based pattern recognition algorithm receives the input frames of an audio signal and a test frame sequence and returns a best match in the audio signal to the given test frame sequence. The energy of each input frame is computed and input frames for which the energy is both within a predetermined degree of closeness to the local maximum energy within the test frame sequence and a local maximum within a respective neighborhood of adjacent frames are identified as probable matches. The difference between overall energy for frames neighboring the remaining probable matches and the test frame sequence is computed as a percentage. The best match is selected based on a weighted combination of difference between local maximum energies and minimum percent deviation in overall energy. Local signal characteristic matching may be employed, with weighting, to refine matching.
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申请公布号 |
US2005273328(A1) |
申请公布日期 |
2005.12.08 |
申请号 |
US20040955959 |
申请日期 |
2004.09.30 |
申请人 |
STMICROELECTRONICS ASIA PACIFIC PTE. LTD. |
发明人 |
PADHI KABI P.;GEORGE SAPNA |
分类号 |
G10L15/08;G10L15/10;(IPC1-7):G10L15/08 |
主分类号 |
G10L15/08 |
代理机构 |
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代理人 |
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地址 |
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