Abstract: A hearing application suite includes enhancement and training for listening and hearing of prerecorded speech, extemporaneous voice communication, and non-speech sound. Enhancement includes modification of audio according to audiometric data representing subjective hearing abilities of the user, display of textual captions contemporaneously with the display of the audiovisual content, user-initiated repeating of a most recently played portion of the audiovisual content, user-controlled adjustment of the rate of playback of the audiovisual content, user-controlled dynamic range compression/expansion, and user controlled noise reduction. Training includes testing the user's ability to discern speech and/or various other qualities of audio with varying degrees of quality.

Abstract: A method and apparatus for generating a summation signal by programmably modulating the intensity levels of a plurality of associated channels of a selection and combining the modulated segments into a unified digital record. A pre-established and user modifiable set of channel intensity levels is provided to the user as a manufacturer recommended modulation and mixing pattern. The user creates, personalizes and subjectively improves sets of channel intensity levels from the basis of default or pre-established patterns and thus produces unique and customized summation signals. A system operator individually adjusts the relative intensity levels of each of a plurality of channels. Each channel is played at default or pre-established intensity, solely and individually, or completely masked, or at a specific relative intensity as programmed by the system operator. Intensity value sets are stored for later access, whereby the operator recreates a previously programmed summation signal.