The higher rate in the downstream direction (that is, from central office to subscriber), however, required that the signals undergo "spectral shaping" (altering the frequency domain representation to match the frequency impairments of the channel) in order to minimize attenuation and distortion at low frequencies.
Radio frequency impairments such as in-phase/quadrature-phase (IQ) imbalances can result in a severe performance degradation in direct-conversion architecture-based communication systems.
BMI was associated with high-frequency hearing impairment in preliminary analyses, and controlling for its effect attenuated the association of diabetes with high-frequency impairment (1.59 [1.59–2.37]).
Diabetes was not associated with high-frequency hearing impairment after controlling for A1C (1.09 [0.60–1.99]) but remained associated with low/mid-frequency impairment.
The lack of a difference in occupational noise exposure between those with and without low/mid-frequency impairment was expected because the frequencies over which the pure-tone average was calculated excluded those most susceptible to injury from noise.
We found a modest effect of controlling for albuminuria, which reduced the association of diabetes with high-frequency hearing impairment (odds ratio 1.67 1.54) but did not affect the association for low/mid-frequency impairment.
Less than 1% of subjects with diabetes had a low/mid-frequency hearing impairment without high-frequency involvement.
The objective of this study was to examine the risk factors of low/mid-frequency and high-frequency hearing impairment among a nationally representative sample of diabetic adults.
For the ICF components body functions, body structures, activities and participation, absolute frequencies and relative frequencies of impairment will be reported along with their 95% confidence intervals.
Hypertension, high total cholesterol, central adiposity, peripheral arterial disease, arterial stiffness, and coronary heart disease were not associated with either low/mid-frequency or high-frequency hearing impairment (data not shown).
In 22 multiple disabled children with no indications of CVI, the frequency of impairment did not exceed that in the reference sample for any L94 task.
