Explore different audio frequencies with a free tone generator for headphone testing and basic hearing self-checks. Generate tones between 20 Hz and 20 kHz, select different waveforms, and switch between stereo, left-ear, or right-ear playback. Use the frequency presets or 15-second logarithmic sweep to explore the audible range. The tool is intended for self-checking and is not a sub... https://aitoolspros.com/tools/audio/tone-generator/