A tone generator is an electronic device or software that produces specific audio frequencies. These frequencies can be used for various purposes, such as testing audio equipment, calibrating sound systems, or creating sound effects. Tone generators can create simple waveforms like sine, square, and triangle waves, which are essential in audio engineering. In addition to testing and calibration, tone generators are often used in music production and sound design. They help musicians and sound engineers create specific pitches or tones, making them valuable tools in both live performances and studio recordings. Popular examples include sine wave generators and signal generators.