ISBN-13: 9788132229261 / Angielski / Miękka / 2016 / 109 str.
ISBN-13: 9788132229261 / Angielski / Miękka / 2016 / 109 str.
Hearing loss can vary in type ranging from conductive, mixed to sensorineural, as well as in degree from mild, moderate, severe to profound. While cochlear implants were devised for bilateral profound sensorineural hearing loss, various other devices have been invented for other types of hearing losses.