diff --git a/src/types.jl b/src/types.jl
index 1967a45..e1353b6 100644
--- a/src/types.jl
+++ b/src/types.jl
@@ -29,6 +29,19 @@ abstract type AbstractRIRConfig end
     lrng::R = GLOBAL_RNG        # Local randon number generator
 end
 
+function ISMConfig(
+    order=(0, -1),
+    fs=16000.0,
+    N=4000,
+    Wd=8e-3,
+    hp=true,
+    isd=0.0,
+    lrng=GLOBAL_RNG
+)
+    ISMConfig(order, fs, N, Wd, hp, isd, lrng)
+end
+
+
 struct Node{T<:Real}
     rx::TxRxArray{T}
     fs::T