Maurice Rozenberg has written:

'Constant high Q bandpass filters' -- subject(s): Bandpass Electric filters, Electric filters, Bandpass

'A digitally programmable filter' -- subject(s): Digital filters (Mathematics), Digital techniques, Signal processing

A bandpassing is an action of filtering out all but a specific range of frequencies.

this question on pic

A bandpass signal, xc(t), is a signal whose one-sided energy spectrum is both:

1) centered at a non-zero frequency, fC, and 2) does not extend in frequency to zero (DC).

The two sided transmission bandwidth of a signal is typically denoted by BT Hertz so that

the one-sided spectrum of the bandpass signal is zero except in [fC − BT /2,fC + BT /2]. This

implies that a bandpass signal satisfies the following constraint: BT /2 < fC. Fig. 1.1 shows a

typical bandpass spectrum. Since a bandpass signal, xc(t), is a physically realizable signal it is

real valued and consequently the energy spectrum will always be symmetric around f = 0. The

relative sizes of BT and fC are not important, only that the spectrum takes negligible values

around DC. In telephone modem communications this region of negligible spectral values is only

about 300Hz while in satellite communications it can be many Gigahertz.

Ljiljana Milic has written:

'Multirate filtering for digital signal processing' -- subject(s): Bandpass Electric filters, Computer simulation, Data processing, Digital techniques, Electric filters, Bandpass, MATLAB, Mathematics, Multiplexing, Signal processing