noise from timing chain side of motor on 2004 Nissan Maxima

noise comming from timing chain side of motor. on start motor is quiet but noise develops after a short drive.the noise is like a constant whine. what could this possibly coming from?

Asked by for the 2004 Nissan Maxima
I had the same issue and it cost about $1800 to fix
what was the problem was it the timing belt