Fig 1.
Corrective ILD generation data for participant 883.
The six inset panels each represent a different frequency band, with cutoff frequencies indicated in the upper left corner of each inset panel. In each inset panel, the dashed black line represents ideal performance, the open blue circle markers depict perceived location plotted as a function of source location, and the heavy blue plot is a sigmoid fit to the localization data. The red functions are the corrective ILD functions for each band, which are the respective differences between ideal and the fit sigmoids, are expressed in dB, and use the y-axes to the right.
Fig 2.
Corrective ILD generation data for participant 2243.
The layout is identical to that of Fig 1.
Fig 3.
Corrective ILD generation data for participant 2287.
The layout is identical to that of Fig 1.
Fig 4.
Corrective ILD generation data for participant 1363.
The layout is identical to that of Fig 1.
Fig 5.
Corrective ILD generation data for participant 643.
The layout is identical to that of Fig 1.
Fig 6.
Corrective ILD generation data for participant 2349.
The layout is identical to that of Fig 1.
Table 1.
There is one listener per row.
Data include Gender, Age, the Etiology of the hearing loss, and the number of years of experience with the Left and Right CI.
Table 2.
There is one listener per row.
Data include the manufacturer of participant’s CIs, the CI models the participant uses day-to-day, and the models used in the study. For the MedEl patient, the cutoff frequencies of the four lowest processing channels, in which FSP takes place, are listed beside the left and right Strategies.
Fig 7.
Localization performance for each participant.
Each of the six participants are each represented in a separate panel. The blue open circles represent performance in the Unprocessed condition, the red open circles represent performance in the Processed condition, and error bars represent standard deviations. The X axes are staggered within each panel to facilitate comparison and to conserve space.
Table 3.
There is one listener per row.
Data show RMS error in degrees azimuth for the Unprocessed and Processed conditions.
Fig 8.
ITD frequency histograms for various frequencies.
Acoustic analysis was conducted on 50 pairs of sentences (about 2.5 minutes of data) produced by different female talkers, in which head-related impulse responses were applied to each such that one was 60 degrees to the left, and the other 60 degrees to the right. The sentences were then combined, filtered into six one-octave wide frequency bands, and an ITD was then estimated every 20 ms in each band. Each plot represents the proportion of occurrence of a given ITD among the time bins. Each panel shows acoustic analysis data for a particular frequency band.
Fig 9.
Pre- and post-processed ILD estimates as a function of azimuth for each participant.
Acoustic analysis is of 500-ms broadband Gaussian noise, recorded from source locations at +/-90 degrees in 15-degree steps, using omnidirectional 1/4” microphones mounted on an acoustic manikin facing forward just above the auricles, as was done during testing. The top panel depicts ILDs in the unprocessed condition, and the the lower six panels each represent ILDs after processing using the six listeners corrective ILD functions, one panel per listener. In each panel, maker size represents ILD magnitude in each of the six frequency bands used in the study as a function of source location. Black markers represent apparent source locations to the left, and white markers to the right.