Worldwide, the proportion of the population with impaired hearing is increasing. The outcome of this is a growing need for hearing rehabilitation. Certain types of hearing loss require treatment with hearing implants. These include cochlear implants (CI) and bone conduction implants (BCI). The aim of the project is to develop innovative methods and technologies that improve spatial hearing and therefore speech understanding with such hearing implants. These methods are intended to be generally applicable to hearing devices and adjusted specifically for the implant types CI and BCI. For CI, this requires the utilization of novel bio-inspired signal processing methods. For BCI, new active components for mechanical stimulation on the basis of piezoelectric transducers are explored.