Meanwhile I figured out how to debug: simply add a WaveFileWriter to save the .wav and inspect the waves in Audacity.
The cause is easy to see there: it isn't in the mixer but the samples I fed to it.
Meanwhile I figured out how to debug: simply add a WaveFileWriter to save the .wav and inspect the waves in Audacity.
The cause is easy to see there: it isn't in the mixer but the samples I fed to it.