There is no dBA curve given as threshold of human hearing. dBA has absolutely noting to do with sone, or with phons, or sound pressure level in dB. 60 phons means as loud as a pure 1000 Hz tone with a level of 60 dB..
According to Simplyhired.com, the average salary for a forensic toxicologist is $74,000 per year. Those who are just starting their careers will most likely earn a salary in the $60,000 range. Forensic toxicologists who have specialized training and experience can earn an annual salary of $100,000 or more.
The U.S. Bureau of Labor Statistics classifies forensic scientists as forensic science technicians. In May 2009, the bureau reported that forensic science technicians earned an average annual salary of $55,070. Bureau data for 2009 indicate that annual salary levels range from a low of $32,420 to a high of $84,260. The annual salary for the median was $51,480.