By keeping Directv I saved $120 and was given $200 plus a $20 credit. Here is how I look at it. My service for the next year will cost $768, but I can subtract out the $120 ETF, $200 Visa card and the $20 credit meaning my cost is $428 for 12 months or about $35.66 per month.ere is how I look at it. My service for the next year will cost $768, but I can subtract out the $120 ETF, $200 Visa card and the $20 credit meaning my cost is $428 for 12 months or about $35.66 per month.
See reference 1 for a scale of dB intensities. Conversation is listed at ~60 dB. normal talking is usually between 50-60 dB and yelling can be up around 80 dB's. Voice Decibel. dB is a measure of relative magnitude. dBA is a measure of sound volume relative to a reference audio level.
1 Pure-tone average (PTA) is the average of hearing sensitivity at 500, 1000, and 2000. 2  This average should approximate the speech reception threshold (SRT), within 5 dB, and the speech detection threshold (SDT), within 6-8 dB. Examples of abnormalities include occlusion of the external auditory canal by cerumen or a mass, middle ear infection and/or fluid, perforation of the tympanic membrane, or ossicular abnormalities. 2  Pure-tone air-conduction thresholds are poorer than bone-conduction thresholds by more than 10 dB (see image below).