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TLV320AIC3204: voice recognition requirements and the compromises if using AIC3100 instead

Lenio Cacula
Genius 16700 points
Part Number: TLV320AIC3204
Other Parts Discussed in Thread: TIDEP0066

My customer reviewed our ref des TIDEP0066 and asks about the need for using the AIC3204 for voice recognition vs AIC3100. For properly conditioning the audio signal, what is lost or gained by using two ADC blocks instead of one? If you have any comments or words of advice with designing a system like the one in the TIDEP0066, it'd be greatly appreciated!

Thank you!

  • 0
    TI__Mastermind 22950 points

    Hi Lenio,

    I am not sure why the specifically the AIC3204 was chosen for this design but I assume stereo audio was required. The AIC3100 is a mono ADC and has Class-D outputs. The AIC3204 is a stereo CODEC that does not have Class-D outputs. The AIC3204 also has more inputs and has a PowerTune mode that allows the user to select between performance vs power consumption. 

    I also don't know much about speech recognition but this is handled by the external DSP and I believe that the number of ADC's affects the capability of implementing speech recognition. 

    Regards,

    Aaron Estrada

  • 0 in reply to Aaron Estrada
    TI__Genius 16700 points

    I appreciate the attempt in answering the question. I understand the differences between the devices; what I need is the context with which one was chosen against the other for the particular application of speech recognition.