Yes, and that makes things even worse. A constant background noise is unpleasant but not so distracting - and it gets filtered out. Sudden voices are way more

Yes, and that makes things even worse. A constant background noise is unpleasant but not so distracting - and it gets filtered out. Sudden voices are way more distracting and they don't get filtered out. On the contrary, they stand out even more once machine noises are filtered out.