Update investigate_subtraction.py

Author: G1OJS

tests/investigate_subtraction.py

@@ -233,7 +233,7 @@ def subtract(audio_data, h0_idx, freq_idxs, meth = 'complex'):
 get_spectrum(audio_samples, t0, 0, 0)
 show_spectrum(fig_spec, ax_spec)
 peak = show_sig(fig_sig, axs_sig, f0_idx, t0, 0, known_msg, show_ylabels = True, peak = 120)
-plt.pause(1)
+plt.pause(2)
 
 symbols = create_symbols(known_msg)
 audio_data = create_ft8_wave(symbols, f_base = freq)