Actually , there is  the difference in that. So , for the PLP features we use the triangular filter shapes. And for the  in the SRI front - end we use the trapezoidal one.
And what 's the top frequency of each ?
Well , now it 's the same. It 's thirty  thirty to seven hundred and sixty hertz.
Yeah. Exp - one 's triangular , one 's trapezoidal. So