发明名称 |
Method and system for processing multi-rate audio from a plurality of audio processing sources |
摘要 |
<p>An audio codec in a wireless device may be utilized for up sampling two or more audio signals to a same data sampling rate. Each audio signal, such as digital audio, voice, and polyringer, for example, may be received at one of a plurality of data sampling rates. Audio signals may be equalized and/or compensated with an FIR filter before up sampling or with an IIR filter to reduce overall processing latency. Multiple half-band interpolation operations may perform the up sampling. The first half-band filter may be replaced by aw IIR filter to reduce overall processing latency. A gain of the up-sampled data may be adjusted to reduce noise effects. The channels of the up-sampled audio signals may be mixed and later further up sampled for subsequent communication to an output device. The up-sampled mixed audio signals may be down sampled for communication to a Bluetooth radio.</p> |
申请公布号 |
EP1927982(A2) |
申请公布日期 |
2008.06.04 |
申请号 |
EP20070012194 |
申请日期 |
2007.06.21 |
申请人 |
BROADCOM CORPORATION |
发明人 |
KONG, HONGWEI;ZENG, HUAIYI HANKS;SOLLENBERGER, NELSON;CHANG, LI FUNG;CHENG, TAIYA;HAYEK, CLAUDE |
分类号 |
G10L19/14;H04S1/00;H04W88/02 |
主分类号 |
G10L19/14 |
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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