The resultant normalized frequency has units of half-cycles/sample or equivalently cycles per 2 samples. Sometimes, the unnormalized frequency is represented in units of radians/second (angular frequency), and denoted by When is normalized by the sample-rate (samples/sec), the resulting units are radians/sample.ometimes, the unnormalized frequency is represented in units of radians/second (angular frequency), and denoted by When is normalized by the sample-rate (samples/sec), the resulting units are radians/sample.
Hilum (noun). the eye of a bean or other seed; the mark or scar at the point of attachment of an ovule or seed to its base or support; -- called also hile. Hilum (noun). the part of a gland, or similar organ, where the blood vessels and nerves enter; the hilus; as, the hilum of the kidney.
Swollen hilar lymph nodes are often a sign of disease or infection. Hilar lymph nodes contain sinuses, germinal centers, trabeculae, scavenger cells, and reticular fibers.Conditions that can afflict the hilar lymph nodes include pneumonia, calcified hilar lymph nodes, lymphadenopathy, swollen lymph nodes, metastasis of cancer, leukemia, and lymphoma.wollen hilar lymph nodes are often a sign of disease or infection. Hilar lymph nodes contain sinuses, germinal centers, trabeculae, scavenger cells, and reticular fibers.