Lots of discussion in a few threads about a nasty and annoying vibration in idle, but only in gear. Not an erratic idle like a dirty throttle body gives you. That goes up and down when the AC compressor kicks on, and can send the idle down to 300-400 RPM and stall the engine out.
If you are unable to detect sounds quieter than 90dB HL, the hearing loss is considered a profound hearing loss for those frequencies. If the average of the frequencies at 500Hz, 1000Hz, and 2000Hz is 90dB or higher, the person is considered deaf. A person who is hard of hearing can have a range of hearing loss from mild to severe. It should be noted that amplification technology is available for people with mild to profound hearing loss.
Certified Deaf Interpreter (CDI) - A deaf or hard of hearing individual, who is able to assist in providing an accurate interpretation between standard sign language and variants of sign language (including home signs) by acting as an intermediary between a deaf or hard of hearing person and a qualified interpreter.