Explore different sound frequencies with a free online generator designed for audio testing and basic hearing self-checks. Generate tones between 20 Hz and 20 kHz, change waveforms and select either ear or stereo playback. The tool can help users compare frequency response, test headphones and speakers, explore room acoustics and check musical reference tones, while hearing results sh... https://aitoolspros.com/tools/text/line-counter/