LogFAQs > #928896353

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TopicAny electric/electronic engineers?
Yellow
10/17/19 5:02:29 PM
#1:


I'm designing a circuit for a noise cancelling board, picking components, using this as a reference.

https://www.mouser.com/applications/audio_noise_cancellation/

Before I go and waste a week of waiting and $40+, is there anything glaringly wrong with my components? (I'll just assume I can figure out power supply and speaker/mic)

AMP:
NE5532DR * 3
https://www.mouser.com/ProductDetail/?qs=LzFo6vGRJ4tu9UjwVgwNUQ%3D%3D

DSP:
ADAU1701JSTZ-RL
https://www.mouser.com/ProductDetail/Analog-Devices/ADAU1701JSTZ-RL?qs=sGAEpiMZZMt5TiJYBD9SCMxUGsQAjE0N6HjE%252B8AmRuA%3D
1.2V - 3.3V
EEPROM needed

CODEC:
https://www.mouser.com/ProductDetail/Maxim-Integrated/MAX9867ETJ%2b?qs=sGAEpiMZZMtq3QB8qGen7QPNkQFJ9x4cYZRYSNF2JL0%3D
1.65 V - 3.6 V

PGA:
MCP6G01T-E/OT
https://www.mouser.com/ProductDetail/Microchip-Technology/MCP6G01T-E-OT?qs=sGAEpiMZZMutXGli8Ay4kELqthI19y6KD7OHLTvNG8c%3D
1.8V - 5.5V, 110 uA


I've never done this before. It's less tutorial and more reading spec sheets. Hell, I just googled what a resistor does, and I assume I need to limit amps to each and every one of my components using some online calculator.

I just follow my own golden rule of figuring out "shit that's way too complicated", which is 95% of all information thrown at you is useless. After I get the DSP I actually need to program it with SigmaStudio.

One more thing, I see all these libraries online for noise cancellation, but I see one little function in here called "Signal Invert". That must be new, because I think all I have to do with the DSP is invert the audio signal. Seems unusual that I only have to use this one function.

Mine
cqwSF2X

Theirs
https://ez.analog.com/dsp/sigmadsp/f/q-a/65849/how-to-use-sigmastudio-software-to-realize-an-external-potentiometer-to-control-phase-the-phase-of-the-range-is-0-to-180

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