[chuck-users] Can I use ADSR UGen to envelope parameters other than gain (e.g. pitch)?

Hello, the ADSR UGen, to me, seems to have effect only over amplitude (which is its original function, I concede). However, is there any use case where I can use ADSR to map, say, pitch instead of amplitude, in order to avoid recurring to functions and for loops? Thanks in advance! -- Jean Menezes da Rocha Compositor Professor Doutorando em Música pela Universidade Federal da Bahia