A good example is the gradual price decline in PCs and smartphones. However, the  BIS central bankers’ speeches  1  deflation I am talking about refers to a situation in which the prices of a broad range of goods and services decline, and consequently, prices as a whole drop.
At the end of the day, central banks are most interested in the ultimate net result of the gamut of price rises within the economy, i.e. the increases in the prices paid by households for goods and services. In this context, the prices of raw materials are, for instance, of a lesser importance.