volume impact meaning that when some trader make a huge buying Suddenly that will effect to price of coin
large number of orders in a very short time, which will affect the price change with a high probability.
FYI, volume-based indicators are just derivatives of volume itself. If you can train yourself to read volume effectively, you won't need indicators to do it for you.
Having said that, On-balance volume (OBV) is one indicator that can help highlight volume trends. Another is a dollar-denominated high volume bar script. One such script is available in
a paid indicator suite published by Spydercrusher.