I mean , we 're already sort of using the mel scale and we 're using the same style filter integration , and  and , well , we 're making sure that low and high
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.