The maximum rate at which data can be transferred over a network path or communication channel, commonly measured in bits per second. In signal processing it also refers to the range of frequencies a channel can carry.
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- In networking, bandwidth describes the capacity of a link, typically expressed in bits per second, and sets an upper bound on throughput. It is distinct from latency, which measures delay rather than capacity.
- In signal processing and communications, bandwidth refers to the width of a frequency band. Available bandwidth limits how much data services such as video streaming can deliver within a given time.