By: Jace Wolfe, PhD
Over the past several years, there have been numerous advances in cochlear implant technology and services. As recent as a decade ago, there were little to no technological solutions available to assist a cochlear implant candidate/recipient, who presented with severe to profound hearing loss, with speech recognition in difficult listening situations—understanding speech in noisy and reverberant settings, over the telephone or television, and when spoken from a distance. Today, cochlear implant manufacturers offer a wide variety of solutions to meet the needs of patients with hearing aids or cochlear implant processors who struggle to communicate. This article identifies ten ways in which cochlear implant technology and services have evolved and improved in the past few years.
10. Automatic scene classification: Hearing aids have featured acoustic scene classifiers for almost a decade. Through these systems, hearing aids classify an environment as one that possesses background noise, speech in quiet or in noise, music, wind, and so forth. Once the listening situation is classified into one of these environments, the hearing aid selects the appropriate form of signal processing that will theoretically optimize performance in the given environment. This technology can be quite valuable as many users are unlikely to manually switch to programs designed for specific, challenging situations. Furthermore, this system will likely be well-received by cochlear implant users as it makes its way to implant sound processors.
9. The development of new speech recognition materials that provide a more realistic assessment of how hearing aid and implant users perform in real-life listening situations: Cochlear implant technology has improved so much that many users score near 100% correct on sentence recognition tests in a quiet environment with a single talker who is male and speaks at a slow to moderate rate. Additionally, many hearing aid users who struggle substantially in realistic situations also often score too well on these tests to meet the indications for cochlear implant candidacy. This fact makes it difficult to distinguish between excellent implant and hearing aid users and good users who may benefit from additional services.