Let hlp[n] denote the impulse response of an FIR generalized linear-phase lowpass filter. The impulse response hhp[n] of an FIR generalized linear-phase highpass filter can be obtained by the transformation
![758_e36a708b-02d3-494d-8d0e-af45637f8aab.png](https://secure.tutorsglobe.com/CMSImages/758_e36a708b-02d3-494d-8d0e-af45637f8aab.png)
If we decide to design a highpass filter using this transformation and we wish the resulting highpass filter to be symmetric, which of the four types of generalized linear-phase FIR filters can we use for the design of the lowpass filter? Your answer should consider all the possible types.