Signal levels refer to the strength or intensity of a signal, often measured in decibels (dB). These levels indicate how well a signal can be transmitted or received, affecting the quality of communication in systems like telecommunications and broadcasting. Higher signal levels generally mean clearer and more reliable communication, while lower levels can lead to distortion or loss of information. In various applications, such as audio engineering and networking, maintaining optimal signal levels is crucial. Engineers often use tools to monitor and adjust these levels to ensure that signals remain within acceptable ranges, preventing issues like noise or interference that can degrade performance.