quantum-espresso/test-suite/ph_metal/matdyn.in.dos

 &input
    asr='simple',  amass(1)=26.98,
    flfrc='Al444.fc', flfrq='Al444.freq', la2F=.true., dos=.true.
    fldos='phonon.dos', nk1=10, nk2=10, nk3=10, ndos=50
 /