EarDiTech delivers measurable results across precision diagnostics and augmented hearing: the CochSyn test for hidden hearing loss, and CoNNear for personalised hearing compensation.
For the scientific background behind these results, see our Scientific Evidence page.
The CochSyn device measures envelope-following responses (EFRs) to quantify hidden hearing loss. In the CochSyn study, EFRs were recorded from young (y), older (o), normal-hearing (NH), and hearing-impaired (HI) participants. Statistical testing shows significant differences between all groups: both aging and hearing damage reduce EFR strength, as expected from auditory neuroscience research.
HASPI (Hearing Aid Speech Perception Index) is an objective measure of how well speech can be understood after hearing-aid processing. Higher scores mean better predicted speech intelligibility.
NAL-NL2 is the current industry-standard fitting rule. OHC is our own outer hair cell compensation strategy, designed to compete with NAL-NL2. CS is the very first hearing-aid algorithm that attempts to compensate for hidden hearing loss (cochlear synaptopathy) within a hearing-aid framework.
In a listener study with n = 14, participants rated sound quality across speech in quiet (SiQ), speech in noise (SiN), classical music, and pop music. Green means the processed sound was rated better than unprocessed; red means worse; a + means the rating was significantly better than NAL-NL2 processing.
This plot shows the neural representation error (NRMSE) between hearing-impaired and normal-hearing models across phoneme categories. A lower score means the processed signal is closer to normal hearing and predicts better speech understanding.
Paired listener testing with n = 14 shows a significant improvement in word recognition with OHC compensation compared to unprocessed audio. On average, tested patients showed a 12.5% improvement in speech understanding.
In an ongoing clinical study, patients listen to speech processed with different hearing-aid algorithms, OHC (outer hair cell compensation), CS (cochlear synaptopathy compensation), and OHC+CS (combined), compared to unprocessed audio.
CS (cochlear synaptopathy compensation)
OHC+CS (combined compensation)
OHC (outer hair cell compensation)
Low-latency real-time processing makes CoNNear suitable for hearables and hearing aids, matching or outperforming leading commercial devices.
CochSyn goes beyond standard hearing-aid fitting. By measuring envelope-following responses, it enables earlier and more accurate assessment of hearing damage, including hidden hearing loss that audiograms miss. This opens monitoring applications where damage must be detected before it becomes clinically obvious.
Large-scale music events can cause subclinical hearing damage that is not visible on a standard audiogram. EFR-based monitoring can flag this neural damage earlier, supporting preventive action for concert-goers, musicians, and event organisers (De Poortere et al., 2026, Scientific Reports).
Platinum-based chemotherapy can cause sensorineural hearing loss. EFR markers can reveal this damage earlier than conventional tests, enabling more timely intervention and better protection of hearing during cancer treatment (Van Der Biest et al., 2026, Ear & Hearing).
Want to know more about the science behind these results? Visit our Scientific Evidence page.