systems and methods for altering audio for more effective delivery to long range targets . an example of the present invention includes a speaker coupled to a processor and one or more sensors suitable for sensing environmental conditions such as temperature and humidity . the processor reads the output of the sensors and compensates for frequency dependent attenuation likely to occur at the sensed environmental condition . in one embodiment , the user specifies a range that the sound is to travel and an equalization table compensating for attenuation at the desired range is selected according to the user input .