Systems and methods are disclosed to enable hearing in the deaf by stimulating sites in the cochlea. The invention uses electrical stimulation in the cochlea, where vibrational energy from a source is received by an implanted device and converted to electrical energy and the converted electrical energy is used by implanted electrodes to stimulate the cochlear nerve. The vibrational energy is generated by a controller-transmitter, which could be located either externally or implanted. The vibrational energy is received by a receiver-stimulator, which contains multiple electrodes to stimulate along selected sites in the cochlea.