Acoustic prescription rule based on an in situ measured dynamic range

摘要

The present application discloses systems, methods, and articles of manufacture for determining prescription rules for a hearing prosthesis. A method in accordance with the present disclosure includes identifying a threshold hearing level and an uncomfortable loudness level for a channel of a hearing prosthesis. In one example, the threshold hearing level and the uncomfortable loudness level are determined in response to a stimulation signal generated utilizing the hearing prosthesis in situ on a recipient. In the present example, the stimulation signal corresponds to the channel of the hearing prosthesis. The method further includes developing a prescription rule based on the threshold hearing level and the uncomfortable loudness level. Generally, the prescription rule includes at least one of a linear compression scheme and a wide dynamic range compression scheme.

主权项

1. A method, comprising:
identifying a threshold hearing level and an uncomfortable loudness level for a channel of a hearing prosthesis, the threshold hearing level and the uncomfortable loudness level having been identified in response to a stimulation signal generated utilizing the hearing prosthesis, wherein the stimulation signal corresponds to the channel of the hearing prosthesis; developing, using a computing device, a prescription rule based on the threshold hearing level and the uncomfortable loudness level, wherein the prescription rule includes at least one of a linear compression scheme or a wide dynamic range compression scheme, wherein each of the linear compression scheme and the wide dynamic range compression scheme includes an expansion threshold and an expansion ratio, wherein the expansion threshold defines where an expansion region of the prescription rule ends and a linear region of the prescription rule begins, wherein the expansion ratio defines a gain in the expansion region where a ratio between an input sound level and a perceived output sound level of the hearing prosthesis is less than 1:1, and wherein a linear gain value of the linear region is determined by averaging the threshold hearing level and the uncomfortable loudness level and subtracting a normal speaking sound level from the average; and providing the prescription rule for use by the hearing prosthesis, wherein the hearing prosthesis is configured to utilize the prescription rule to convert an acoustic signal into an output signal that is delivered through the hearing prosthesis to be perceived as sound by a recipient of the hearing prosthesis.