white paper - march 2015

Evidence on Soft Speech Booster

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  • Why?

    Soft Speech can be hard to hear and make sense of for people with a hearing impairment. Research shows that some people can benefit from extra amplification of soft sounds.

  • How?

    Soft Speech Booster is enabled by making the VAC rationale more flexible, which has been done with VAC+. This has allowed us to personalize the amount of soft speech boost prescribed.

  • What?

    The default Soft Speech Boost prescribed is 3 dB, which can be further personalized in Genie. The average benefit is 7% improved speech understanding, which can extend up to 20% if it is personalized.

The Concept

Why soft gain matters?

In a typical conversation, you find soft speech
sounds, such as consonants about 75% of the
time

Recent research on level
perception - An example

Sam should get less soft gain than Bob.

Personal amount of soft gain in Soft Speech Booster

Default Soft Speech Boost is 3 dB

Clinical Evidence

Ressearch


Independent research in Oldenburg, Germany and data from product testing at Oticon (PI: K. Wagener from Hörzentrum)

  • Testing included:
  • HINT type of sentences (GÖSA) Speech
  • Understanding in Noise – 65 dB SPL

  • Understanding of Soft Speech in Quiet – 50 dB SPL

  • Total number of test persons was 64

Clinical Evidence


Overall Speech benefit: (soft and moderate level)

Specific Soft Speech benefit: +6 %

  • Nicolas Le Goff, PhD

    Senior Research Audiologist Centre for Applied Audiology Research Oticon A/S

    Other work

  • Donald J. Schum, PhD

    Vice President Audiology & Professional Relations Oticon Inc.

    Other work

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