Summary
A Cochlear training note for clinicians on how the Nucleus 7 cochlear implant processor mixes accessory or telecoil input with its own microphones, and how the mix is set and changed.
Key findings
- Defines the mixing ratio as the amount of accessory or telecoil input presented to the user relative to the processor microphone input.
- Gives the default accessory mixing ratio as 1:1 for children, so the remote microphone and the processor microphone are equally loud, and 2:1 for adults, which attenuates the processor microphone by 6 dB while streaming.
- Clinicians set the ratio in the fitting software from 1:1 to 6:1, with increasing microphone attenuation, or to accessory or telecoil input only.
- Users can change the balance while streaming, in the Nucleus Smart App or the iPhone's accessibility controls, in steps of 1.5 dB. Their changes last only until the processor is switched off; if a user keeps changing the mix, the author advises the clinician to reprogramme the default.
- States that the Nucleus 7 has a built-in telecoil for telephones, neck loops and looped rooms such as some theatres, churches and meeting rooms, and that it works with Phonak Roger 20 FM receivers.
Limits
A maker's training note about one processor generation (Nucleus 7), first published in December 2017 and last modified in June 2023. It describes settings and gives no evidence on which mix works best for listeners in venues.
Read the original
pronews.cochlear.com/clinical-quick-tips-accessory-mixing-nucleus-7-sound-processor
Cited in
Cite this source
Catlett D. Clinical Quick Tips: A closer look at accessory mixing in the Nucleus 7 Sound Processor. Cochlear Professional News (Cochlear Americas). 26 December 2017. https://pronews.cochlear.com/clinical-quick-tips-accessory-mixing-nucleus-7-sound-processor/ (accessed 9 October 2026).
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