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This is a project for 2 way audio door phone, the features might be as listed below.
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6 H; w+ D& y! s1. Battery operation, hence low standby consumption is important. The RF sniffing structure must be well organized, short wake up time, low standby current./ v& g+ ~1 Z5 u- ?- q7 J8 W
2. 2 way audio ability, it means echo cancellation ability is necessary. The IC selected would need a DSP inside or any software base library to address the echo and howling problem.4 u# p1 ]5 f& P* \& v: ]
3. RF media is 2.4GHz with frequency hopping, the IC selected should have the SPI interface to do the communication.
4 C7 a' W h' E4. The audio input will need an ADC to pick up the signal and with internal codec to compress the audio signal.6 R5 p0 ]6 H* W# |2 w. {
5. For the audio output, the internal decode must be able to convert the signal into analog signal.
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Is there any recommendation for suitable IC for our applications?
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( |. T8 B& a7 [4 oregards! |
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