Elastic scattered radiation at the wavelength corresponding to the laser line ( Rayleigh scattering ) is filtered out by either a notch filter, edge pass filter, or a band pass filter, while the rest of the collected light is dispersed onto a detector.
12.
To see that it s possible to design such an analog filter, you could always split the signal into an arbitrarily large number of bands using a bunch of band pass filters, amplify each band separately by an appropriate amount, and then join the signals together in one output.
13.
Retests that were performed using the same COFDM receivers with the addition of a front end band pass filter gave much improved results for the DVB-T receiver, but further testing was not pursued . [ http : / / www . sbgi . net / dtv / newer / Receiver % 20Anamoly % 20Retest . pdf
14.
Formants are present in all instruments that use a resonating body, like the violin, viola, cello, bass viol, bassoon, saxophone, English horn, clarinet, oboe, acoustic guitar, etc . The fixed body of the instrument acts like a set of fixed frequency band pass filters, which is what a formant is.
15.
It may also have equipment for encrypting and decrypting communications, spectrum filtering tools ( band pass filters ), etc . antennas may also be considered as components of BTS in general sense as they facilitate the functioning of BTS . Typically a BTS will have several transceivers ( TRXs ) which allow it to serve several different frequencies and different sectors of the cell ( in the case of sectorised base stations ).
16.
So an interesting question would be if you can spice up a one-way mirror in some similar way, i . e . by splitting the photon somehow into two or even three weaker photons in a coating on the protected side, and then putting some kind of band pass filter in the mirror so that the weaker photons can't make it back through unless they somehow manage to meet up and recombine.
