Dangling Participles. Dangling participles (also known as dangling modifiers) sound more painful than they actually are. Consider the following sentences all of which contain dangling participles or dangling modifiers. In the sentence below, the modifying clause (Rushing to catch the bus) contains a participle (rushing).
S/N and (S+N)/N When measuring signal to noise ratio there are two basic elements to the measurement. One is the noise level and the other is the signal. As a result of the way measurements are made, often the signal measurement also includes noise as well, i.e. it is a signal plus noise measurement.
Signal to Noise Ratio. The signal to noise ratio is the difference between the noise floor and the reference level. The reference level is determined by the person making the measurements. For amplifiers, the reference may be, full power, one volt, one watt into a given load or any number of other things.