diff --git a/paddlespeech/s2t/exps/u2/model.py b/paddlespeech/s2t/exps/u2/model.py
index 32311c88298dfff45691d631ac29bf0c0df60513..22d4238ac832fa79fec3b3286ef3e64c16937441 100644
--- a/paddlespeech/s2t/exps/u2/model.py
+++ b/paddlespeech/s2t/exps/u2/model.py
@@ -212,7 +212,8 @@ class U2Trainer(Trainer):
                             msg += f" {k.split(',')[0]}: "
                             msg += f"{v:>.8f}" if isinstance(v,
                                                              float) else f"{v}"
-                            msg += f" {k.split(',')[1]}" if len(k.split(',')) == 2 else f""
+                            msg += f" {k.split(',')[1]}" if len(
+                                k.split(',')) == 2 else f""
                             msg += ","
                         msg = msg[:-1]  # remove the last ","
                         if (batch_index + 1
diff --git a/requirements.txt b/requirements.txt
index 08f68449ec468812aa84ec614b15ca1b1a2e447b..2b34d36bdb467e0286c5d1e87d2f1383a9356f98 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -33,6 +33,7 @@ sentencepiece
 snakeviz
 soundfile~=0.10
 sox
+soxbindings
 tensorboardX
 textgrid
 timer
diff --git a/tools/extras/install_mfa_v1.sh b/tools/extras/install_mfa_v1.sh
new file mode 100755
index 0000000000000000000000000000000000000000..fa5b4801ecad48aa1c21993869b29a4fd7c3f1ae
--- /dev/null
+++ b/tools/extras/install_mfa_v1.sh
@@ -0,0 +1,4 @@
+#!/bin/bash 
+
+test -d montreal-forced-aligner || wget --no-check-certificate https://github.com/MontrealCorpusTools/Montreal-Forced-Aligner/releases/download/v1.0.1/montreal-forced-aligner_linux.tar.gz
+tar xvf montreal-forced-aligner_linux.tar.gz
\ No newline at end of file
diff --git a/tools/extras/install_mfa.sh b/tools/extras/install_mfa_v2.sh
similarity index 100%
rename from tools/extras/install_mfa.sh
rename to tools/extras/install_mfa_v2.sh
diff --git a/tools/extras/install_sclite.sh b/tools/extras/install_sclite.sh
new file mode 100755
index 0000000000000000000000000000000000000000..da89e60db2eb2c17800fbde9679862e54dfa95a1
--- /dev/null
+++ b/tools/extras/install_sclite.sh
@@ -0,0 +1,26 @@
+#!/bin/bash
+
+WGET="wget --no-check-certificate"
+
+# SCTK official repo does not have version tags. Here's the mapping:
+# # 2.4.9 = 659bc36; 2.4.10 = d914e1b; 2.4.11 = 20159b5.
+SCTK_GITHASH=20159b5
+SCTK_CXFLAGS="-w -march=native"
+CFLAGS="CFLAGS=${SCTK_CXFLAGS}"
+CXXFLAGS="CXXFLAGS=-std=c++11 ${SCTK_CXFLAGS}"
+
+MAKE=make
+
+
+${WGET} -nv -T 10 -t 3 -O sctk-${SCTK_GITHASH}.tar.gz  https://github.com/usnistgov/SCTK/archive/${SCTK_GITHASH}.tar.gz; 
+tar zxvf sctk-${SCTK_GITHASH}.tar.gz
+rm -rf sctk-${SCTK_GITHASH} sctk
+mv SCTK-${SCTK_GITHASH}* sctk-${SCTK_GITHASH}
+ln -s sctk-${SCTK_GITHASH} sctk
+touch sctk-${SCTK_GITHASH}.tar.gz
+
+rm -f sctk/.compiled
+CFLAGS="${SCTK_CXFLAGS}" CXXFLAGS="-std=c++11 ${SCTK_CXFLAGS}" ${MAKE} -C sctk config
+CFLAGS="${SCTK_CXFLAGS}" CXXFLAGS="-std=c++11 ${SCTK_CXFLAGS}"  ${MAKE} -C sctk all doc
+${MAKE} -C sctk install
+touch sctk/.compiled
\ No newline at end of file
diff --git a/tools/extras/install_sox.sh b/tools/extras/install_sox.sh
new file mode 100755
index 0000000000000000000000000000000000000000..ddb1151c7b33e9946efab586d53a0827e53fd6e8
--- /dev/null
+++ b/tools/extras/install_sox.sh
@@ -0,0 +1,6 @@
+#!/bin/bash 
+
+apt install -y libvorbis-dev libmp3lame-dev libmad-ocaml-dev
+test -d sox-14.4.2 || wget --no-check-certificate https://nchc.dl.sourceforge.net/project/sox/sox/14.4.2/sox-14.4.2.tar.gz
+tar -xvzf sox-14.4.2.tar.gz -C .
+cd sox-14.4.2 && ./configure --prefix=/usr/ && make -j4 && make install
\ No newline at end of file
diff --git a/tools/extras/install_venv.sh b/tools/extras/install_venv.sh
new file mode 100755
index 0000000000000000000000000000000000000000..16679b79558bbc1ef8ebf181477d58c16402de16
--- /dev/null
+++ b/tools/extras/install_venv.sh
@@ -0,0 +1,36 @@
+
+#!/bin/bash
+# copy from Espnet
+
+set -euo pipefail
+
+if [ $# -eq 0 ] || [ $# -gt 2 ]; then
+    echo "Usage: $0 <python> [venv-path]"
+    echo "e.g."
+    echo "$0 \$(which python3)"
+    exit 1;
+elif [ $# -eq 2 ]; then
+    PYTHON="$1"
+    VENV="$2"
+elif [ $# -eq 1 ]; then
+    PYTHON="$1"
+    VENV="venv"
+fi
+
+if ! "${PYTHON}" -m venv --help > /dev/null 2>&1; then
+    echo "Error: ${PYTHON} is not Python3?"
+    exit 1
+fi
+if [ -e activate_python.sh ]; then
+    echo "Warning: activate_python.sh already exists. It will be overwritten"
+fi
+
+"${PYTHON}" -m venv ${VENV}
+cat << EOF > activate_python.sh
+#!/usr/bin/env bash
+# THIS FILE IS GENERATED BY tools/setup_venv.sh
+. $(cd ${VENV}; pwd)/bin/activate
+EOF
+
+. ./activate_python.sh
+python3 -m pip install -U pip wheel
\ No newline at end of file