Effects processors are devices or software that modify audio signals to create unique sounds. They can add various effects, such as reverb, delay, or distortion, to enhance music or voice recordings. Musicians and sound engineers often use these tools to shape their sound and achieve a desired atmosphere in their tracks. These processors can be found in different forms, including pedals for guitarists, rack-mounted units for studios, or plugins for digital audio workstations (DAWs). By manipulating the audio in creative ways, effects processors help artists express their musical ideas and bring their visions to life.