been applied successfully for signal processing in chemistry. The number of publications
related to the application of WT to manipulate chemical data has increased rapidly in the last
2 years from one paper being published in 1989 to 18 papers in 1996 and 41 papers in
1997. More than 70 papers were published within the period from 1989 to 1997. In these
published works, WT was mainly employed for noise removal and data compression in …