One of these projects was to convert the text versions of my study guides to audio so that I could listen to the text in the car while I drive (an ideal time to study). The process was actually surprisingly simple.
Here is a procedure to convert PDFs to Audio books.
1) Open the document in Preview.
2) Command + A (Select All), Command + C (Copy).
3) Open a new document in TextEdit.
4) Paste the contents into the new document (Command + V)
5) Convert the document to Text (Format -> Make plain text)
6) Save the file to a .txt document. For this example we use rawfile.txt
At this stage you might want to do some cleanup. I use a little Perl Script listed below. You might want to do some Regular Expression hacking do clean up the document from things like Footers, Headers or Page Numbers.
convert.pl
#!/opt/local/bin/perl
while (<>) {
s/^\d+\/.*$//; #Remove page numbers
s/^\d*.$//;
s/Chapter \d+: [\s\w]+//;
#Remove image and figure references
s/^Figure \d+.*/;
#Remove - continuations from end on lines.
if (s/-.$//) {
chomp;
}
print;
}
7) Save convert.pl to the file system. And make it executable:
$chmod u+x convert.pl
8) Clean up the text document:
$cat rawfile.txt | ./convert.pl > cleanfile.txt
9) Open the file cleanfile.txt in TextEdit (you might have to choose the UTF-8 type)
10) Fire up Automator and create a Custom script with two actions.
- Text -> Get Contents of TextEdit Document
- Music -> Text to AudioFile
Select an appropriate target directory and filename. I highly recommend choosing the voice Alex
11) Make sure your cleanfile.txt document in TextEdit is selected.
12) Go back into Automator and hit Play.
13) Sit back and relax while Leopard converts your text to an Audio file.
From there you can import the audio file into iTunes, convert it to Mp3 if you want and sync it to your iPod to take the book on the road.
Guess I should start studying now...
I'll do some home work while I listen to my fresh Audiobook :-)
