ankur13901
Newbie level 4
- Joined
- Jun 8, 2011
- Messages
- 5
- Helped
- 0
- Reputation
- 0
- Reaction score
- 0
- Trophy points
- 1,281
- Location
- Auckland, New Zealand, New Zealand
- Activity points
- 1,313
I am trying to develop a noise cancelling circuit for personal use with existing headphones. I have obtained as3430 IC for this purpose, but i have not been able to find some of the key values to completely develop the circuit. Please, refer to the attached image. Data sheet for the IC is available here
https://media.digikey.com/pdf/Data Sheets/Austriamicrosystems PDFs/AS3400,10,30.pdf
The questions are as follows,
Will the lpf and notch filters be dependent on mic and headphones, or are generic for acoustic application? If not, what values should I be looking for?
There are amps in the IC on MICR and and MICL, would that need I would need a microphone without amplifier, If so, where can I get those caps. All i can find are with amps.
https://media.digikey.com/pdf/Data Sheets/Austriamicrosystems PDFs/AS3400,10,30.pdf
The questions are as follows,
Will the lpf and notch filters be dependent on mic and headphones, or are generic for acoustic application? If not, what values should I be looking for?
There are amps in the IC on MICR and and MICL, would that need I would need a microphone without amplifier, If so, where can I get those caps. All i can find are with amps.
