Delta Clarity & VAC

Clarity - for high frequency and mild HL
Delta’s Clarity fitting strategy has already proven itself to be the right approach for users with high frequency hearing loss. These people already do well in most quiet situations. They do not have a sense that they are missing sounds until they are in background noise. What they need is help with important high frequency speech information in those difficult situations. The Clarity rationale provides that high frequency boost with minimal use of compression in order to improve the sharpness of speech. When in quiet, the mild gain and open fitting gives a sense of transparency. However, when the going gets tough, the clarity boost kicks in.

Voice Aligned Compression - for Broadband Hearing Loss
People with broadband losses have an entirely different set of needs: they are missing sound in almost all situations. They need to have the full speech signal – from soft to loud, from low pitch to high pitch returned to them. They need full flexibility to match their individual sound preference needs and they need directionality across the full range of the device. The Voice Aligned Compression (VAC) fitting approach in Delta provides a broadband speech signal, individually crafted to restore a natural sense of loudness for all input levels. This approach allows you to fit Delta to people with greater hearing loss in the low and mid frequencies and those experienced users who are expecting a fuller sound quality.

80 dB IEC 645.2 speech noise insertion gain

50 dB IEC 645.2 speech noise insertion gain

Clarity

VAC

These curves show the insertion gain differences between VAC and Clarity for both loud and soft inputs. The VAC amplification strategy provides more gain across the frequency range, whereas Clarity focuses on the higher frequencies, particularly in loud environments.