The sound produced by touching each button on a touch tone

Last updated: 7/6/2023

The sound produced by touching each button on a touch tone phone is described by the equation below where I and h are the low and high frequencies in the figure shown The touch tone phone sequence for Mary Had A Little Lamb is 3212333 222 399 3212333322321 Many numbers do not appear in this sequence including 0 You accidentally touch 0 for one of the notes y sin 2 lt sin 2sht t is time in seconds a Enter the sound produced as the sum of sines AY ABO N EMA 200 WUS UNO S EG 697 770 852 941 Low frequencies High 1209 1336 1477 frequencies