Subbands

Some articles on subbands, subband:

Quantum Cascade Laser - Operating Principles - Active Region Designs
... the electron wave functions of the subbands ... The scattering rate between two subbands is heavily dependent upon the overlap of the wave functions and energy spacing between the subbands ... and to increase further, the energy spacing between the subbands is designed such that it is equal to the longitudinal optical (LO) phonon energy (~36 meV in GaAs) so that resonant ...
MPEG-4 Part 3 - AAC-SSR - Why AAC-SSR Was Introduced
... Example 4 subbands bitrate = 128 kbit/s, sample rate = 48 kHz, f_lowpass = 20 kHz 3 subbands bitrate ~ 120 kbit/s, sample rate = 48 kHz, f_lowpass = 18 kHz 2 subbands bitrate ~ 100 kbit/s, sample rate = 24 kHz ...
Filter Bank
... the output of analysis is referred to as a subband signal with as many subbands as there are filters in the filter bank ... The difference is that receivers also down-convert the subbands to a low center frequency that can be re-sampled at a reduced rate ... be achieved by undersampling the bandpass subbands ...