Step 3 - Recording the Data

We will use the Audacity Sound Editor and Recorder to record your speech to audio files. Create a new folder called 'voxforge/train/wav'.

The prompts file you created in Step 2 will guide you on what to record. The first column contains the name of the audio file, and the following columns contain the text transcriptions.

Recording Levels

Make sure you are in a quiet environment, your microphone is adjusted correctly, and the recording levels in Audacity are set properly. See Step 3 of the Tutorial for details on how to do this.

Sampling Rate & Bits per Sample

Check your Preferences in Audacity to make sure your sampling rate is set to 48Khz, your sample rate format is set to 16-bits per sample, and your channel is set to mono. Also make sure that your default export 'File Format' is set to 'WAV (Microsoft 16-bit PCM)'. Step 3 of the Tutorial shows you how to do this.

Recording your first Audio File

Record you first file by clicking the Record icon in Audacity and saying the words in the first line of your prompts file:

DIAL ONE TWO THREE FOUR FIVE SIX SEVEN EIGHT NINE OH ZERO

If the track sounds OK then click 'File' on the Audacity menu, then click 'Export As Wav' and save it as 'sample1' in the 'voxforge/train/wav' folder.

Repeat for all the remaining entries in your prompts file.

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Add • Search

recording script

By AtnNn - 5/18/2008 - 1 Replies

Linux users who have arecord and aplay can use this script:

#!/bin/bash

prompts=$1
dest=$2

if [ ! -f "$prompts" ]; then
echo usage $0 '<prompts>' [folder]

fi

if [ "a$dest" = a ]; then
    dest=.
else
    dest=${dest%/}
fi

echo Please press ^C after reading each prompt
echo -n Press enter to start' '
read

while read line <&3; do
    line=${line#\*/}
    name=${line%% *}
    prompt=${line#* }
    file="$dest/$name.wav"

    if test -f "$file"; then
        echo [$file]
        echo '=>' $prompt
        aplay -q $file &
        aplay=$!
        echo -n "File $file exists, redo [yN]? "
        read a
        kill $aplay 2>&1
        if [ "a$a" != ay ]; then continue; fi
    fi

    while true; do
        echo [$file]
        echo '=>' $prompt
        arecord -q -f dat $file
        aplay -q $file &
        aplay=$!
        echo -n 'next, redo or quit [Nrq]? '
        read a
        kill $aplay 2>&1
        if [ "a$a" = aq ]; then exit; fi
        if [ "a$a" = ar ]; then continue; fi
        break
    done
done 3< $prompts


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