Quick and dirty IVR sounds for your Asterisk PBX

tts.sh

#!/bin/bash

#title           : tts.sh
#description     : This script will convert text to speech using Google translate API
#                    and then to Asterisk formats (wav, sln, gsm)
#
#author          : Andrius Kairiukstis <[email protected]>
#date            : 26 July 2013
#version         : 0.1
#usage           : bash tts.sh FILENAME VOICE PHRASE
#notes           : SOX packages needed:
#                    sudo apt-get install sox libsox-fmt-mp3 libsox-fmt-gsm libsox-fmt-base
#================================================================================================================

language="en"
filename=$1
if [ "${filename}" != "" ]; then shift; text_phrase=$@; else text_phrase=""; fi

# echo "Filename: ${filename}, and text phrase: ${text_phrase}."

if ( [[ "${filename}" == "" ]] || [[ "${text_phrase}" == "" ]] ); then
  echo "Please call this script with two arguments containing file name (without extension) and text phrase to be converted into voice file."
  echo "Sample: tts.sh TEST This is a test"
  exit
fi

rm -f ${filename}_source.*
rm -f ${filename}.*

# Download an mp3 from Google translate
wget -q -U Mozilla -O ${filename}_source.mp3 "http://translate.google.com/translate_tts?ie=UTF-8&tl=${language}&q=$(echo ${text_phrase} | sed 's#\ #+#g')" > /dev/null 2>&1
source=$(cd $(dirname ${filename}_source.mp3); pwd)/$(basename ${filename}_source.mp3)
absolute_path=$(echo ${source}|sed "s/_source.mp3//")

# Step 2 - convert downloaded mp3 to the Asterisk PBX compatible wav file
sox ${filename}_source.mp3 -t wav -r 8000 -b 16 -e signed-integer -c 1 ${filename}.wav
#sox ${filename}_source.mp3 -t gsm -r 8000 -b 16 -c 1 ${filename}.gsm
sox ${filename}_source.mp3 -t gsm -r 8000 -c 1 ${filename}.gsm
sox ${filename}_source.mp3 -t raw -r 8000 -b 16 -e signed-integer -c 1 ${filename}.sln
# Note, do we really need this format with simple TTS?
sox ${filename}_source.mp3 -t raw -r 16000 -b 16 -e signed-integer -c 1 ${filename}.sln16

# Step 3 - convert files with Asterisk PBX (note, current Linux user should have permissions to run Asterisk
rasterisk -rx "file convert ${absolute_path}.sln16 ${absolute_path}.g722" > /dev/null 2>&1
rasterisk -rx "file convert ${absolute_path}.sln ${absolute_path}.alaw" > /dev/null 2>&1
rasterisk -rx "file convert ${absolute_path}.sln ${absolute_path}.ulaw" > /dev/null 2>&1
rasterisk -rx "file convert ${absolute_path}.sln ${absolute_path}.g729" > /dev/null 2>&1
rasterisk -rx "file convert ${absolute_path}.sln ${absolute_path}.g723" > /dev/null 2>&1
rasterisk -rx "file convert ${absolute_path}.sln ${absolute_path}.ilbc" > /dev/null 2>&1