Double Bass The "Third to Third" Cadence

[walters]

What is the "Third to third" Cadence?


1.) Common tone
2.) Similar motion in the upper 3 voices
3.) the "Tripled root doubling" in I


Have to Triple the root in the Final tonic

and Add a Passing 7th in the V.

A "third to third movement" in the soprano,alto , or tenor

 

[godoze]

where did you hear of this ? i've never in my life heard of such a thing. The 3rd of the dom chord moves up to the tonic and the 7th of the dom chord resoves down to the 3rd of the tonic chord.
Sound like you are trying to figure out a PAC or an IAC.