How to calculate magnitude and phase frequency response of of Low pass filter on logarithmic scale?

e.g let us consider we have an impulse response of low pass filter as follows h=[1/sqrt(3), 1/sqrt(2.5), 1/sqrt(2), 1/sqrt(0.5)]

and also guide how to calculate and display a wavelet function after 1, 5 and 10 iterations corresponding to a low-pass filter with impulse response above.

Thanks in Advance