<LINK rel=stylesheet type=text/css href="Style.css"><h1>Creating Audio Files</h1> <p class=level_1_indented>One of the most powerful features of Text Speaker is its ability to <a href="SupportedFileFormats.aspx">convert your documents</a> into audio files.&nbsp; This feature gives you the ability to listen to your documents wherever you are.&nbsp; The audio files can be produced in WAV and MP3 formats.</p> <p class=level_1_indented>Click <b>Speak &gt;&gt; Convert Current File To Audio</b>.</p> <p class=level_1_indented><IMG style="WIDTH: 341px; HEIGHT: 454px" alt="" src="AudioProperties.png"> </p> <H2 class=ltr>WAV Settings</h2> <ul> <li><b>Audio Compressor</b>: PCM produces the highest possible audio quality files but with a large size.&nbsp; The files produced by <b>CCITT A-Law and Law</b> are almost the same as PCM.&nbsp; The advantage of these techniques is that they modify speech sounds to make the audio more understandable.&nbsp; <li><b>Channel</b>: Stereo mode produces high quality audio and gives you the impression of natural voices.&nbsp; <li><b>Audio Frequency</b>: This setting controls the sampling rate of your audio output.&nbsp; A higher frequency produces better quality, but larger audio files.&nbsp; Generally with Text Speaker the value can be set to 16KHz for optimum audio files.&nbsp; Higher values can be used if the audio is being broadcast or used for commercial reasons.&nbsp; Values of 8 KHz and below introduce noticeable distortion.&nbsp; <li><b>Bit Depth</b>: The accuracy with which sound frequencies are recorded in the file depends on the Bit Depth value.&nbsp; For Text Speaker, increasing this value above 8 generally does not produce a noticeably better sound quality.&nbsp; When adding a background music, the higher the bit depth value, the better the sound quality.&nbsp; Increasing the bit depth produces larger size files.&nbsp; </li></ul> <H2 class=ltr>MP3 Settings</h2> <p class=level_1_indented><IMG style="WIDTH: 378px; HEIGHT: 462px" alt="" src="MP3Properties.png"></p> <ul> <li><b>Audio Setting</b>: Set the quality of your audio file from the dropdown list.&nbsp; The quality you choose will affect the size of your files.&nbsp; The higher the quality, the larger the file size.&nbsp; <li><b>Audio Channels</b>: <b>Stereo</b> and <b>Joint Stereo</b> are the two options available in the <b>Audio Channels</b> dropdown.&nbsp; Joint Stereo can be used when you want to produce very high quality audio files.&nbsp; It compresses the audio files and saves storage space.&nbsp; However, stereo is appropriate to be used when you set the quality as low or normal.&nbsp; <li><b>Audio Frequency</b>: This setting controls the sampling rate of your audio output.&nbsp; A higher frequency produces better quality, but larger audio files.&nbsp; Generally with Text Speaker, 16KHz will produce optimum spoken audio files.&nbsp; Higher values can be used if the audio is being broadcast or used for commercial reasons.&nbsp; Values of 8 KHz and below introduce noticeable distortion.&nbsp; <li><b>Constant Bitrate</b>: The number of bits processed every second is the bit rate.&nbsp; The higher the bit rate, the larger the files and the better the audio quality.&nbsp; When you want to add background music to your audio file, increase the bit rate for higher quality.&nbsp; </li></ul> <H2 class=ltr><a name=Background_Music></a> Add Background Music</h2> <p class=level_1_indented>Listen to long articles with a soft background track.&nbsp; When converting your document to MP3 format, you can combine speech with music.&nbsp; The file formats supported for the background music are MP3, WAV, AIFF, WMA, MPA, ASF, MPEG, MPG, and M1V.</p> <p class=level_1_indented>Click <b>Speak &gt;&gt; Convert Current File to Audio</b>.&nbsp; Choose to convert to MP3 format so that you can add background music.&nbsp; Enable the option <b>Add background music to the output file.&nbsp;</b> Browse for the music file that you want to add.&nbsp; When you choose the file, click <b>Test</b> to listen to how it sounds.&nbsp; You can adjust the volume with the help of the slider.</p> <p class=level_1_indented>The time taken for the process to complete depends on the length of the document.&nbsp; Once the audio file is created, right click on it in the <b>File List</b> and click <b>Play Audio File.</b></p> <p class=level_1_indented><IMG alt="" src="AudioPlayer.gif"></p> <H2 class=ltr><a name=BatchConversion></a> Batch File Conversion</h2> <p class=level_1_indented>Save time by converting multiple documents to audio files with Batch conversion.&nbsp; Select the files in the <b>File List</b> for conversion.&nbsp; <a href="SpeakingTextToFile.aspx">Click <b>Speak &gt;&gt; Convert Selected Files to Audio</b></a> then set the audio properties.</a></p> <p class=level_1_indented><IMG border=1 src="SelectMultipleFiles.png" width=700 height=146></p> <p class=level_1_indented>To convert all the documents open in Text Speaker, click <b>File &gt;&gt; Convert All Files To MP3 Audio / WAV Audio.</b></p><BR>