<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def snr_ratio(in1, in2):
 """ The following function simply calculates the signal to noise ratio between two signals. INPUTS: in1 (no default):
 Array containing values for signal 1. in2 (no default):
 Array containing values for signal 2. OUTPUTS: out1 The ratio of the signal to noise ratios of two signals. """


    out1 = 20*(np.log10(np.linalg.norm(in1)/np.linalg.norm(in1-in2)))

    return out1