diff --git a/applications/lofar2/model/pfb_os/one_pfb.ipynb b/applications/lofar2/model/pfb_os/pfb_reconstruction.ipynb
similarity index 99%
rename from applications/lofar2/model/pfb_os/one_pfb.ipynb
rename to applications/lofar2/model/pfb_os/pfb_reconstruction.ipynb
index 6ed66a53194ed3b502e517661fc9c969817dbeaf..008f2fd78312893eb4f68b47901cf584909ef7fe 100644
--- a/applications/lofar2/model/pfb_os/one_pfb.ipynb
+++ b/applications/lofar2/model/pfb_os/pfb_reconstruction.ipynb
@@ -12,6 +12,7 @@
     "Purpose:\n",
     "* Practise DSP [1].\n",
     "* Try to reproduce LOFAR subband filterbank in Python instead of MATLAB [2]\n",
+    "* Investigate reconstruction using critically sampled analysis PFB and synthesis PFB \n",
     "\n",
     "References:\n",
     "1. dsp_study_erko, summary of DSP books\n",
@@ -20,7 +21,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 89,
+   "execution_count": 21,
    "id": "02689e50",
    "metadata": {},
    "outputs": [],
@@ -32,7 +33,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 90,
+   "execution_count": 22,
    "id": "65235f50",
    "metadata": {},
    "outputs": [],
@@ -42,7 +43,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 91,
+   "execution_count": 23,
    "id": "acea4f0a",
    "metadata": {},
    "outputs": [
@@ -52,7 +53,7 @@
        "<module 'dsp' from '/dop466_0/kooistra/git/hdl/applications/lofar2/model/pfb_os/dsp.py'>"
       ]
      },
-     "execution_count": 91,
+     "execution_count": 23,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -64,7 +65,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 92,
+   "execution_count": 24,
    "id": "a39e99a2",
    "metadata": {},
    "outputs": [],
@@ -74,7 +75,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 93,
+   "execution_count": 25,
    "id": "3436bc2a",
    "metadata": {},
    "outputs": [],
@@ -86,7 +87,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 94,
+   "execution_count": 26,
    "id": "ca6b8c9d",
    "metadata": {},
    "outputs": [],
@@ -100,7 +101,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 95,
+   "execution_count": 27,
    "id": "55e0fe37",
    "metadata": {},
    "outputs": [],
@@ -112,7 +113,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 96,
+   "execution_count": 28,
    "id": "20ae2f4a",
    "metadata": {},
    "outputs": [],
@@ -133,7 +134,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 97,
+   "execution_count": 29,
    "id": "e08b5ba2",
    "metadata": {},
    "outputs": [
@@ -206,7 +207,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 98,
+   "execution_count": 30,
    "id": "df01f951",
    "metadata": {},
    "outputs": [],
@@ -219,7 +220,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 99,
+   "execution_count": 31,
    "id": "181d6c07",
    "metadata": {},
    "outputs": [],
@@ -232,7 +233,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 100,
+   "execution_count": 32,
    "id": "6108ff59",
    "metadata": {},
    "outputs": [],
@@ -248,7 +249,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 101,
+   "execution_count": 33,
    "id": "3ec78793",
    "metadata": {},
    "outputs": [],
@@ -266,7 +267,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 102,
+   "execution_count": 34,
    "id": "da37c5b9",
    "metadata": {},
    "outputs": [],
@@ -288,7 +289,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 103,
+   "execution_count": 35,
    "id": "8e867248",
    "metadata": {},
    "outputs": [
@@ -332,7 +333,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 104,
+   "execution_count": 36,
    "id": "eee415a1",
    "metadata": {},
    "outputs": [],
@@ -352,7 +353,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 105,
+   "execution_count": 37,
    "id": "9468907a",
    "metadata": {},
    "outputs": [],
@@ -373,7 +374,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 109,
+   "execution_count": 38,
    "id": "4d046175",
    "metadata": {},
    "outputs": [
@@ -439,7 +440,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 107,
+   "execution_count": 39,
    "id": "c8d0560c",
    "metadata": {},
    "outputs": [],
@@ -467,7 +468,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 108,
+   "execution_count": 40,
    "id": "c0573913",
    "metadata": {},
    "outputs": [