This is an assessed project. It is compulsory to use microcontrollers for this purpose. I got a few schematics. The best one had used LM833. That is nowhere to be found in my area right now. NE5532 is the substitute I choose.
What I need to know is whether this would work?
Can the equalizer work alone or does it need an amplifier as well?
What he should have said is:I have to build a 5 band equalizer using microcontrollers.
Yes thank you for the clarificationI think that there may be a translation problem here.
What he should have said is:
"I have to build a 5 band equalizer using integrated circuits."
I think that the mis understanding goes like this:
An op-amp is (usually) a type of integrated circuit.
A microcontroller is a type of integrated circuit.
BUT, an op-amp is NOT the same as a microcontroller.
I got a few schematics. The best one had used LM833.
https://bestengineeringprojects.com/5-band-audio-equalizer-circuit-using-lm833/ this is what I gotI was about to suggest "microcircuit" instead of microcontroller.
In that case, the 5532 is an excellent choice for general purpose audio work. It is old, but readily available, and it is much better than most other opamps of its time.
Almost all 5-band or graphic equalizers use opamps to make up for the signal attenuation through the filter components. In this way, the output signal level is approximately equal to the input signal level.
For more than three bands, a common approach is to use opamps to form a synthetic inductor as par of an L-C filter circuit, with one or two opamps per frequency band.
Please post a link to that project page or schematic.
Thank you for your insightYou could use switch capacitor filters -
Use switched capacitor filters to lower parts count and get greater accuracy, temperature stability, and reliability compared to passive or active RC filters.www.digikey.com
Integrated Circuits (ICs) - Interface - Filters - Active are in stock at Digikey. Order Now! Integrated Circuits (ICs) ship same daywww.digikey.com
Or google "audio equalizer FFT".....
No, those are OpAmps and they have nothing to do with microcontrollers.I have to build a 5 band equalizer using microcontrollers. I have chosen NE5532 for the job. Is this sufficient enough? Do I need to design an amplifier as well? If so why?