Clinical Trial Data

LACE has undergone clinical trials at the following leading universities and medical centers across the country.

Clinical Trial Locations

  • Audiological Consultants of Atlanta
  • Audiology Specialists, Laconia, NH
  • Pacific Hearing Service, Los Altos and Atherton, CA
  • Rehder Hearing Clinic, Billings, MT
  • San Francisco Hearing and Speech Center, San Francisco
  • University of California, San Francisco, CA
  • University of Iowa, Iowa City, IA
  • University of Vermont, Burlington, VT
  • University of Louisville, Louisville, KY

LACE Training Task Improvements

Difference between the first and last week average training scores


Training Task Scores

Speech in Noise

3 dB Improvement

Time Compressed Speech

6% Improvement

Auditory Memory

1 difficulty level Improvement

Competing Speakers

4 dB Improvement


Comparable Independent Outcome Measures

Difference between pre-training and post-training scores

Task Outcome Measure
QuickSin Test 2.2 dB Improvement
Listening Span Test
(Measure of auditory working memory)
6% Improvement
Percent change in HHIE 17% Improvement
Stroop Color Word Test
(Measure of speed of processing and interference)
3 second Improvement

All changes are statistically significant at P=<.05.
No changes for control group.