The range of frequencies or data that a device, signal, or system can transmit or process within a given time frame.
Bandwidth describes the capacity of a medium or system to carry signals. In audio, it refers to the frequency range a device can reproduce or transmit, such as microphones, amplifiers, and speakers handling low to high frequencies. In video, it defines how much frequency range is passed from input to output, affecting clarity and quality. In networking and digital communication, bandwidth refers to the volume of data transmitted over a connection per second, measured in bps, Kbps, Mbps, or Gbps. In AV and structured cabling, sufficient bandwidth ensures consistent performance across data-heavy applications, supporting simultaneous use of security, automation, and communication systems without bottlenecks.
Bandwidth definitions and requirements are addressed in standards and guidelines from IEEE (Institute of Electrical and Electronics Engineers) and TIA (Telecommunications Industry Association).
The term bandwidth originated in analog communications to describe the frequency range of a signal. With the development of digital technologies, it expanded to include data transfer capacity in computing and telecommunications, becoming a core factor in designing modern networks.