I suddenly get a dropout early in a rendered file if I use Sonnox Suppressor HR as a Montage Track plugin.
It’s the VST2 version of Sonnox Suppressor HR; I haven’t installed the VST3 version yet.
I don’t recall having this problem until quite recently; perhaps after I updated Wavelab from 9.5.?? (between 25 - 35) to 9.5.40, which I did on 1/23/2019; and I’ve used Sonnox Suppressor HR many times in Wavelab before with no apparent problems.
Odd bc this problem doesn’t seem latency related; changing the ASIO buffer size doesn’t make a difference (even to the max 4096 with my RME PCI Hammerfall based system), nor does changing any other setting in Wavelab or Windows 7. Also, I have no problem rendering Montages using other plugins with very high latency; I just rendered the same Montage using DMG Equilibrium EQ plugin in FIR mode with a 65536 impulse length, which produces around 743 ms of latency at 44.1 kHz, with no dropouts or other problems. The latency in the Montage Effects Window reported for the Sonnox Suppressor HR is 233 ms; smaller by about 1/3rd.
(I even doubled the impulse in the DMG Equilibrium to 128k and had no problems on playback, though I didn’t try to render a file at that setting).
I wonder if the corrections made in versions .30 & .35 (related to timing & high latency plugins) somehow messed up the proper processing of the Sonnox Suppressor:
9.5.35: PAR-3194 Rendering a clip, track or output in the Audio Montage with a high latency plugin that has been bypassed, no longer adds silence at the beginning of the file.
Ironically, I can bypass Sonnox Suppressor HR and get a good render; only when it is engaged, it causes a dropout in the beginning of the file, a little after the reported latency of all plugins combined (I haven’t confirmed this numerically yet, but two recent renders seem to bear this out).
The other fix was for release
9.5.30: PAR3089 The Master Section Level Meter is no longer out of sync with the audio playback when using high-latency Clip or Track effects in the Audio Montage.