test mic with visualization
https://testmicrophonelaptophub.solsticebrief.com/posts/how-to-test-microphone-on-laptop-for-clear-audio-every-time
When you tap the mic icon, a colorful waveform dances across the screen, mirroring every sound you make. It's oddly satisfying to see your voice turn into moving art—claps create sharp spikes while whistling makes gentle ripples. Perfect for ensuring your audio gear picks up without peaking.