Update core.py

core.py

@@ -105,7 +105,7 @@ def simulate_loudspeaker(
         * acoustical_constants.measurement_distance
         * np.exp(1j * wave_number_array * acoustical_constants.measurement_distance)
     )
-    Z_delay = 1j * np.exp(
+    Z_delay = np.exp(
         -1j * wave_number_array * acoustical_constants.measurement_distance
     )  # Phase rotation due air propagation time
 
@@ -128,11 +128,24 @@ def simulate_loudspeaker(
         / acoustical_constants.reference_pressure
     )
 
+    # fmt: off
+    mechanical_fs = 1 / (2*np.pi*(thiele_small_params["Mm"]*thiele_small_params["Cm"])**(1/2))
+    Qm = 2*np.pi*mechanical_fs*(thiele_small_params["Mm"]+0.00092)/thiele_small_params["Rm"]
+    Qe = 2*np.pi*mechanical_fs*(thiele_small_params["Mm"]+0.00092)/(thiele_small_params["Bl"]**2/thiele_small_params["Re"])
+    Qt = (Qm*Qe) / (Qm+Qe)                                          
+    # fmt: on
+
     loudspeaker_responses = {
         "electrical_impedance": electrical_impedance_shorted_output,
         "mechanical_force": mechanical_force,
         "mechanical_velocity": mechanical_velocity,
         "acoustical_pressure": acoustical_pressure,
+        "selectivity_params": {
+            "fs": np.round(mechanical_fs, 2),
+            "Qm": np.round(Qm, 2),
+            "Qe": np.round(Qe, 2),
+            "Qt": np.round(Qt, 2),
+        },
     }
 
     return loudspeaker_responses