As far as I know, when we connect a signal to the inverting terminal of an op amp, we get an amplified output which is 180 deg out of phase from the input. Going through the datasheet of TPA611A2, the input from the microphone goes to the inverting input. However, the LM386 has the input given to the non-inverting input. Can someone help me out regarding this?
The way I'm interpreting this is that giving the microphone input to the inverting terminal will shift the phase of the sound we want to hear by 180 deg, making it a different waveform from the original signal, changing the sound we'll hear altogether.