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.
1 Calculating the cost of PMI varies according to mortgage lenders but on the average you can look at 0.5% to 1% of the loan taken as the cost of PMI. Cheapinsurancehq.com tells us that the PMI premium is between $50 to $80 per month on the average for a home priced at $159,000, according to Mortgage Companies of America.