diff --git a/app/src/main/cpp/sox/CmakeLists.txt b/app/src/main/cpp/sox/CmakeLists.txt
index eaaf8d9..6b2eff9 100644
--- a/app/src/main/cpp/sox/CmakeLists.txt
+++ b/app/src/main/cpp/sox/CmakeLists.txt
@@ -110,6 +110,11 @@ set(formats_srcs
         s3-fmt.c
         s4-fmt.c
         sox-fmt.c
+        u1-fmt.c
+        u2-fmt.c
+        u3-fmt.c
+        u4-fmt.c
+        ul-fmt.c
         voc.c
         vox.c
         vox.h
diff --git a/app/src/main/cpp/sox/formats.h b/app/src/main/cpp/sox/formats.h
index 13ce859..0a87acb 100644
--- a/app/src/main/cpp/sox/formats.h
+++ b/app/src/main/cpp/sox/formats.h
@@ -52,11 +52,11 @@
 //  FORMAT(sphere)
 //  FORMAT(svx)
 //  FORMAT(txw)
-//  FORMAT(u1)
-//  FORMAT(u2)
-//  FORMAT(u3)
-//  FORMAT(u4)
-//  FORMAT(ul)
+  FORMAT(u1)
+  FORMAT(u2)
+  FORMAT(u3)
+  FORMAT(u4)
+  FORMAT(ul)
   FORMAT(voc)
   FORMAT(vox)
   FORMAT(wav)
diff --git a/app/src/main/cpp/sox/u1-fmt.c b/app/src/main/cpp/sox/u1-fmt.c
new file mode 100644
index 0000000..f25f39d
--- /dev/null
+++ b/app/src/main/cpp/sox/u1-fmt.c
@@ -0,0 +1,21 @@
+/* libSoX file formats: raw         (c) 2007-8 SoX contributors
+ *
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 of the License, or (at
+ * your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include "sox_i.h"
+#include "raw.h"
+
+RAW_FORMAT4(u1, "u8", "ub", "sou", "fssd", 8, 0, UNSIGNED)
diff --git a/app/src/main/cpp/sox/u2-fmt.c b/app/src/main/cpp/sox/u2-fmt.c
new file mode 100644
index 0000000..27019d6
--- /dev/null
+++ b/app/src/main/cpp/sox/u2-fmt.c
@@ -0,0 +1,21 @@
+/* libSoX file formats: raw         (c) 2007-8 SoX contributors
+ *
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 of the License, or (at
+ * your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include "sox_i.h"
+#include "raw.h"
+
+RAW_FORMAT2(u2, "u16", "uw", 16, 0, UNSIGNED)
diff --git a/app/src/main/cpp/sox/u3-fmt.c b/app/src/main/cpp/sox/u3-fmt.c
new file mode 100644
index 0000000..66b7587
--- /dev/null
+++ b/app/src/main/cpp/sox/u3-fmt.c
@@ -0,0 +1,21 @@
+/* libSoX file formats: raw         (c) 2007-8 SoX contributors
+ *
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 of the License, or (at
+ * your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include "sox_i.h"
+#include "raw.h"
+
+RAW_FORMAT1(u3, "u24", 24, 0, UNSIGNED)
diff --git a/app/src/main/cpp/sox/u4-fmt.c b/app/src/main/cpp/sox/u4-fmt.c
new file mode 100644
index 0000000..28f99fa
--- /dev/null
+++ b/app/src/main/cpp/sox/u4-fmt.c
@@ -0,0 +1,21 @@
+/* libSoX file formats: raw         (c) 2007-8 SoX contributors
+ *
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 of the License, or (at
+ * your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include "sox_i.h"
+#include "raw.h"
+
+RAW_FORMAT1(u4, "u32", 32, 0, UNSIGNED)
diff --git a/app/src/main/cpp/sox/ul-fmt.c b/app/src/main/cpp/sox/ul-fmt.c
new file mode 100644
index 0000000..b876f3e
--- /dev/null
+++ b/app/src/main/cpp/sox/ul-fmt.c
@@ -0,0 +1,21 @@
+/* libSoX file formats: raw         (c) 2007-8 SoX contributors
+ *
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 of the License, or (at
+ * your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include "sox_i.h"
+#include "raw.h"
+
+RAW_FORMAT(ul, 8, 0, ULAW)