Linked pairs of hearing aids offer various possibilities for directional processing providing adjustable tradeoff between signal-to-noise ratio improvement and binaural cue preservation. The potential benefit of directional processing depends on the processing scheme, the acoustic scenario, and the listener’s ability to exploit binaural cues (see Neher et al, ISAAR 2017). Here, a binaural speech intelligibility model (BSIM) was used to predict the benefit of five processing schemes in three acoustic scenarios individually for elderly listeners with symmetric (N = 20) or asymmetric (N = 19) hearing thresholds below 2 kHz. The acoustic scenarios consisted of a frontal target talker presented against two speech maskers from ±60° azimuth or spatially diffuse cafeteria noise. In (Neher et al, ISAAR 2017), N0Sπ detection performance at 500 Hz was found to be a good predictor of individual benefit from low-frequency binaural cues. This is consistent with predictions of an extended BSIM, which takes individual binaural processing accuracy into account. Furthermore, BSIM was extended to predict speech intelligibility based on mixed target and interferer signals. This enables BSIM, in principle, to be used for adapting bilateral directional processing in hearing aids to the individual listener’s abilities and the current acoustical situation.
|Number of pages||1|
|Publication status||Published - 2017|
|Event||International Symposium on Auditory and Audiological Research 2017: Adaptive Processes in Hearing - Hotel Nyborg Strand, Nyborg, Denmark|
Duration: 23. Aug 2017 → 25. Aug 2017
|Conference||International Symposium on Auditory and Audiological Research 2017|
|Location||Hotel Nyborg Strand|
|Period||23/08/2017 → 25/08/2017|