def kaiser_beta(a):
 if (a > 50):
  beta = (0.1102 * (a - 8.7))
 elif (a > 21):
  beta = ((0.5842 * ((a - 21) ** 0.4)) + (0.07886 * (a - 21)))
 else:
  beta = 0.0
 return beta

def kaiser_beta ( a ) : if ( a > 50 ) : beta = ( 0.1102 * ( a - 8.7 ) ) elif ( a > 21 ) : beta = ( ( 0.5842 * ( ( a - 21 ) ** 0.4 ) ) + ( 0.07886 * ( a - 21 ) ) ) else : beta = 0.0 return beta
compute the kaiser parameter beta .