memory for VM and long recordings

[gobbios]

I recently ran into some trouble with the SAD modules, specifically with not even super long audio files (10min+) (possibly related to #91, #44, #127). The modules worked fine, superficially, i.e. .rttm files were produced just fine, except that no speech was detected after about 600 seconds even if files were longer than that and there was speech throughout the files. Increasing the memory allocated to the VM before vagrant up solved this issue (vbox.memory = 6144 in vagrantfile in my case).

I just wanted to point out two related things in the documentation (troubleshooting section)

• there is some inconsistency with respect to what the default value for vbox.memory (3072, 4096) is

• the fact that increasing memory might solve problems after the VM installation (i.e. during usage) is somewhat hidden

As a side note: I suspect there is a reason that the default vbox.memory is 2048, but if there isn't would it be possible to increase that default somewhat?