Altering the frequencies in which industrial noise must be for an employer to be required to provide workers' compensation to a covered employee for hearing loss; altering the method used to determine the percentage of hearing loss deafness for purposes of workers' compensation; and altering the method used to determine the deduction required to be made to allow for the average amount of hearing loss from nonoccupational causes in the population for purposes of calculating workers' compensation benefits for occupational deafness.