Plantronics C4220 User Guide - Page 15

TELEPHONE OPERATIONS General Recommendations for Tone Settings on the C4220TM Telephone* Amplification Type Setting Emphasis Audio Tone 1 Audio Tone 2 Audio Tone 3 Audio Tone 4 Bass Low Frequency Amplication Flat Frequency Amplication Clarity Power Multiband Compression- Low Power/Loudness Power/Loudness Power/Loudness Speech Intelligibility User listens while wearing Digital Hearing Aids User listens while wearing Analog Hearing Aids User has difficulty understanding speech on telephone User with Noise Induced Hearing Loss Mild to Moderate Hearing Loss With some High Frequency Hearing Loss With significant High Frequency Hearing Loss With Low Frequency Hearing Loss Moderate to Severe Hearing Loss With High Frequency Hearing Loss With Low Frequency Hearing Loss With Loss across All Frequencies *Notes: 1. These are general recommendations. Hearing loss is specific to each individual; therefore, Clarity® recommends an end user tries all four setting to see which will work best for their particular hearing condition. 2. Boost must be on for audio tone settings to activate. 3. Noise reduction, acoustic echo cancellation and all other DCP™ features are active regardless of the tone setting. 15