I created a dtmf tone with an amplitude of 0. 8 and a tone/silence ratio of 550 and during 7s. Then i amplified 1. 3 db sound. And finally i multiplied the speed of 0,960.
An edited version of my "boiling water" sound to simulate a phone vibrating on a table. Recorded for my sound design class using a samsung galaxy s7 internal microphone.