Audio Signal

An audio signal—whether electrical, digital, or acoustic—is a representation of sound that encodes information about a sound wave, enabling it to be recorded, transmitted, processed, and reproduced through equipment such as microphones, speakers, mixers, and recording systems; in the physical world, sound starts as vibrations traveling through the air, which a microphone converts into an electrical audio signal that maps the changing air‑pressure over time and can then be amplified, processed, or archived; audio signals manifest mainly in analog form, where continuous electrical waveforms directly mirror the original vibrations, and in digital form, where sound is sampled into numeric sequences that computers can store and manipulate; within music production and audio engineering, these signals travel through a signal chain comprising microphones, preamplifiers, mixers, audio interfaces, and digital audio workstations like Ableton Live, FL Studio, and Logic Pro, so careful management and processing throughout this chain are crucial for achieving high‑quality recordings and mixes.