
Summary
In the initial fit condition with an open dome coupling, the Sontro Soundwave delivered limited speech benefit in our lab testing. Speech in quiet scored just 1.10/5 and speech in noise scored 0.40/5, both well below category averages. The device excelled in own-voice comfort at 4.60/5, reflecting the open coupling's minimal occlusion. Feedback handling was solid at 4.70/5. The overall initial fit score of 1.74/5 suggests users may struggle to achieve adequate audibility without further adjustment.
Moving to a tulip dome coupling in the tuned fit condition improved speech in quiet substantially to 3.10/5, though this remained below the category average. Speech in noise held at 1.20/5. The more occluding coupling reduced own-voice comfort to 3.60/5 (still above average) but significantly impacted feedback handling, which dropped to 2.50/5. The overall tuned fit score improved by 0.50 points to 2.24/5, indicating modest gains from professional adjustment but still below-average performance overall.
Lab Review Scores
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Lab recordings







