| A | B |
|---|
| signal to noise ratio (SNR) | signal dB SPL - noise dB SPL |
| Ling 6 sounds | /m/ /u/ /a/ /i/ 'sh' /s/ |
| direct audio input (DAI) | hard-wired connection leading directly from the sound source to the hearing aid |
| mapping | the process of programming a cochlear implant |
| hearing aid receiver | converts amplified electrical signal to an acoustic signal |
| hearing aid microphone | picks up sound, converts to electrical signal |
| electrode array | internal component of cochlear implant inserted into cochlea |
| hearing aid gain | output dB SPL of hearing aid - input dB SPL |
| HA frequency response | hearing output; gain as a function of frequency |
| maximum power output | highest intensity level a hearing aid can produce |
| telecoil | HA feature, receives electromagnetic signals from a telephone or loop system |
| directional microphone | responds primarily to sound coming from in front of the user |
| sound field amplification system | sound from a mic transmitted to loudspeakers installed in room |
| personal FM system | wireless; sound from mic transmitted via radio waves to individual receiver |
| inductive loop system | wireless;sound from mic sent to wire around a space, HA telecoil receives electromagnetic signal |
| infrared system | wireless; ALD that broadcasts from the sound source to receiver/amplifier by light waves |
| hybrid cochlear implant | has short electrode array, patients hear via both electrical stimulation and acoustic amplification |
| speech processor | external component of CI, modifies input sound for presentation to electrode array |
| relay system | telephone service, operators convey callers’ messages via teletype or voice |
| probe mic (real ear) measures | determines dB SPL of hearing aid output near patient's eardrum |
