switching to high quality piper tts and added label translations

venv_piper/lib/python3.12/site-packages/sympy/functions/elementary/benchmarks/bench_exp.py

@@ -0,0 +1,11 @@
+from sympy.core.symbol import symbols
+from sympy.functions.elementary.exponential import exp
+
+x, y = symbols('x,y')
+
+e = exp(2*x)
+q = exp(3*x)
+
+
+def timeit_exp_subs():
+    e.subs(q, y)