My platform is MCU+ 1940 SigmaDSP, sound system.
Nowadays there is noise: when I adjust the Single volume control (slew), when 0dB or below, there is no noise.
While above 0dB, the noise appear.
Not consider the hardware, is there any soft method to remove the noise?
I once used the De-Emphasis , I can remove the noise, I can't hear the noise even the volume is max (not link input).
But, at the same time some useful signal of hight frequence was also removed, or something,
Anyway, some useful effect sound disappear if I add De-Emphasis .
The De-Emphasis 's parameter can't be adjusted, is there any other module of SigmaStudio I could use for removing the noise?