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5 Apr 2020
Touch-Tone Telephone: When a key is pressed on a touch – tone telephone, the keypad generates two pure tones, which combine to produce a sound that uniquely identify the key. The figure shows the low frequency 
and the high frequency 
associated with each key. Pressing a key produces the sound wave 
.
Graph the sound wave generated by the 
key from 
to 
.
Touch-Tone Telephone: When a key is pressed on a touch – tone telephone, the keypad generates two pure tones, which combine to produce a sound that uniquely identify the key. The figure shows the low frequency and the high frequency associated with each key. Pressing a key produces the sound wave .
Graph the sound wave generated by the key from to .
Reid WolffLv2
28 May 2020