Transient is the most hyped, abused and trendy word in GS. A transient is a short-duration signal that represents a nonharmonic attack phase of a sound source. It contains a high degree of nonperiodic components and a higher magnitude of high frequencies than the harmonic content of that sound.
But like any estimate, it's based on some rounded numbers and rules of thumb. For example, this mortgage affordability calculator assumes that your monthly mortgage payment should be no more than 28% of your monthly income, to leave enough money for other expenses and investments you'll want to make.
Zillow's mortgage affordability calculator helps you determine what you can comfortably afford to pay based on your personal circumstances. It evaluates the percentage of your monthly income that goes toward existing debts to help identify how much extra you have to spend on a mortgage payment.