9 Downloadable software in the nature of a mobile application for providing self-administered calibrated hearing tests and test results; Downloadable raw hearing test data; Downloadable software in the nature of a personalized hearing augmentation application for use with one or more listening devices, namely, hearables, earbuds, hearing aids, headphones, stereo-enabled devices, vehicles, and home theaters; Downloadable software in the nature of digital audio filters; Downloadable software in the nature of a personalized hearing correction application for use with a listening device, namely, hearables, earbuds, hearing aids, headphones, stereo-enabled devices, vehicles, and home theaters; Downloadable software in the nature of an audio digital signal processing (DSP) model; Downloadable software for convolution audio processing; Downloadable software for providing a user-specified audio output signal; Downloadable media player software having a hearing-test customized audio output signal; Downloadable hearing refinement software for use with a listening device, namely, hearables, earbuds, hearing aids, headphones, stereo-enabled devices, vehicles, and home theaters; and Downloadable software in the nature of a plugin for augmenting audio DSP topologies. Computer hardware in the nature of an embedded personalized hearing augmentation application for use with a listening device, namely, hearables, earbuds, hearing aids, headphones, stereo-enabled devices, vehicles, and home theaters; Computer hardware in the nature of an embedded personalized hearing augmentation DSP model for use with a listening device, namely, hearables, earbuds, hearing aids, headphones, stereo-enabled devices, vehicles, and home theaters