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This is a project for 2 way audio door phone, the features might be as listed below." M6 d0 ]$ p1 |. ?* g
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1. Battery operation, hence low standby consumption is important. The RF sniffing structure must be well organized, short wake up time, low standby current.2 N; v* X, W+ c7 @
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.
6 p" q: U* j5 |3. RF media is 2.4GHz with frequency hopping, the IC selected should have the SPI interface to do the communication.: S& e# A/ k# B9 g
4. The audio input will need an ADC to pick up the signal and with internal codec to compress the audio signal.% [- \4 P) ~4 w9 k
5. For the audio output, the internal decode must be able to convert the signal into analog signal.2 @: i1 P/ c4 U+ v1 G6 i+ E
4 w0 _7 @. z9 NIs there any recommendation for suitable IC for our applications?
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regards! |
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