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Back مرشح تمرير النطاق Arabic Filtre passabanda Catalan Pásmová propust Czech Båndpasfilter Danish Bandpass German Bendo-pasa filtrilo EO Filtro paso banda Spanish Ribapääsfilter ET فیلتر میان‌گذر FA Filtre passe-bande French

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Bandwidth measured at half-power points (gain −3 dB, √2/2, or about 0.707 relative to peak) on a diagram showing magnitude transfer function versus frequency for a band-pass filter.

A medium-complexity example of a band-pass filter.

A band-pass filter or bandpass filter (BPF) is a device that passes frequencies within a certain range and rejects (attenuates) frequencies outside that range. It's the opposite of a band-stop filter.