Click/Pop sound when starting AmigAmp

[DarrenHD23]

When you start AmigaAMP using the MHI driver, you hear a momentary (fairly loud) click or pop sound. And then if you start to play back an mp3 stream, you hear it again. Version1.03 Beta 8 and lower are affected. Tested on AA3000+, Z3660 in 060 mode. It is not always present but most of the time you hear it.

[shanshe]

Thanks @DarrenHD23, probably my audio bar system has an anti pop/click filter, as I don't hear it. I will look for some old speakers...
I replaced the ZZ9000 AX DSP, by a few band filters. All of them have buffers to implement the IIR filters. I will review them and see if they are cleared before used.
Also there is a double line buffer that should be cleared (but in this case I clear it at the init of the ARM), so I will see if it is necessary to clear it after stop playing audio (or before start playing audio).
I will write here the progress in this issue...