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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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5 n8 S% Z& H8 \& a1. Battery operation, hence low standby consumption is important. The RF sniffing structure must be well organized, short wake up time, low standby current.
6 @- c, u/ `7 ]8 s( ^) U2. 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.) U {# O2 l; `; b& ?
3. RF media is 2.4GHz with frequency hopping, the IC selected should have the SPI interface to do the communication.
/ r: Z6 p/ P( _4. The audio input will need an ADC to pick up the signal and with internal codec to compress the audio signal.) j w+ t. _' v% _1 s
5. For the audio output, the internal decode must be able to convert the signal into analog signal.* {% `: R, n0 F I
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Is there any recommendation for suitable IC for our applications?
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+ V8 h+ G* H+ dregards! |
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