11. The computer system of claim 7 , wherein the program instructions to select the announcement comprises program instructions to compute a number of first Boolean parameter values and a number of second Boolean parameter values received in the information about the mobile computing devices, wherein each of the first Boolean parameter values indicate an end-user of one of the mobile computing devices within the defined area has a hearing impairment, and wherein each of the second Boolean parameter values indicate an end-user of one of mobile the computing devices within the defined area has a visual impairment.
11. The computer system of claim 7 , wherein the program instructions to select the announcement comprises program instructions to compute a number of first Boolean parameter values and a number of second Boolean parameter values received in the information about the mobile computing devices, wherein each of the first Boolean parameter values indicate an end-user of one of the mobile computing devices within the defined area has a hearing impairment, and wherein each of the second Boolean parameter values indicate an end-user of one of mobile the computing devices within the defined area has a visual impairment. 12. The computer system of claim 11 , wherein the program instructions to select the announcement further comprises: program instructions to instruct an announcement system to amplify volume of the audio to a suitable predefined level and increase a font size of the transcription of the audio on the display screen of the television, if the number of first Boolean parameter values received is greater than or equal to a first configurable threshold value; and program instructions to instruct the announcement system to increase the font size of the transcription of the audio on the display screen of the television and to adjust color, contrast, and sharpness of images on the display screen to a suitable predefined level, if the number of second Boolean parameter values received is greater than or equal to a second configurable threshold value.