发明名称 |
Radio receiver with stereo decoder and method for use therewith |
摘要 |
A stereo decoder includes a first digital filter for producing a first filtered composite audio signal and a second digital filter for producing a second filtered composite audio signal. A sum/difference network produces a left channel signal and a right channel signal. A processor executes operational instructions that calculate a first corner frequency of a first digital filter based on a signal quality of the FM signal, calculate a first set of filter coefficients for the first digital filter based on the first corner frequency and an approximation of a filter transform, calculate a second corner frequency of a second digital filter based on the signal quality, and calculate a second set of filter coefficients for the second digital filter, based on the second corner frequency and the approximation of the filter transform.
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申请公布号 |
US7801311(B2) |
申请公布日期 |
2010.09.21 |
申请号 |
US20050227357 |
申请日期 |
2005.09.15 |
申请人 |
FREESCALE SEMICONDUCTOR, INC. |
发明人 |
HENDRIX JON DAVID;RAGAN THOMAS GLEN |
分类号 |
H04H20/47;H04H20/48;H04R5/00 |
主分类号 |
H04H20/47 |
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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