Generate test tones for audio calibration, speaker checks, headphone testing and music reference using this free browser-based frequency generator. Select a specific frequency or use presets, then choose sine, square, sawtooth or triangle waves. The tool also offers a 15-second logarithmic sweep from 20 Hz to 20 kHz and separate left or right channel output for more detailed audio tes... https://aitoolspros.com/tools/audio/bpm-tap-counter/