Ear potential that is transmitted along the spiral ganglion, which sends information through the auditory portion of the vestibulocochlear nerve to the temporal lobe of the brain. The human ear can generally hear sounds with frequencies between 20 Hz and 20 kHz (the audio range). Sounds outside this range are considered infrasound (below 20 Hz) or ultrasound (above 20 kHz) Although hearing requires an intact and functioning auditory portion of the central nervous system as well as a working ear, human deafness (extreme insensitivity to sound) most commonly occurs because of abnormalities of the inner ear, rather than in the nerves
Radio in the Republic of Ireland commercially in Ireland, and the first attempt to license such since 2002; as well as what will amount to four stations easily receivable in most of Dublin city and county. It is expected these may be the last commercial analogue services to be licensed, as the FM band will be highly saturated in Dublin and the midlands of Ireland. Digital Radio Mondiale (DRM) on Ireland's many unused ITU-allocated medium wave frequencies is expected to be the next round of licensing, particularly as some of these allocations are 15 to 20 kHz wide, which is enough for FM-alike quality with the