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What is "ftp" anyway?
How to use it (Mac, PC, OS/2)
How to use it (Unix)
What to transfer (file names, audio file types)

 

About FTP: the file transfer program

 

ftp is the name of the file transfer program, which you will use to transfer audio and text files to the LSM and to get the LSM results when they are ready.

 

 

FTP Instructions

Drag-and-drop ftp instructions (Mac, Windows, OS/2)

From any operating system where you can drag and drop files on the desktop including Windows, MacOS and OS/2: instructions are as follows:
 

 

Command-line ftp instructions (Unix and DOS)

On a Unix machine, for example, if your files are named sample.txt and sample.wav (to pick one random acceptable audio file format), stored in the directory /home/my/directory, then the following steps would send the files to the LSM:

BOLD is what you type.			# Comments over here

unix-prompt% cd /home/my/directory
unix-prompt% ls				# just checking what's there.
sample.txt	sample.wav	 	# Looks like they're there.
unix-prompt% ftp ftp.sprex.com          # connect to ftp.lsm.sprex.com using ftp
Login name: anonymous			# this means it's an anonymous ftp session
Password: -your email address here-	# please provide your email address
ftp> bin				# set the transfer mode to "binary"
ftp> cd in			# change directory to the "in" directory
ftp> put sample.txt			# transfer the text file
ftp> put sample.wav			# transfer the waveform file
ftp> quit				# end the ftp session

To retrieve the LSM's output, use the same procedure, except that you use "get" instead of "put":

unix-prompt% cd /home/my/directory	# or wherever you want the results to come to
unix-prompt% ftp ftp.sprex.com          # connect to ftp.lsm.sprex.com using ftp
Login name: anonymous			# this means it's an anonymous ftp session
Password: -your email address here-	# please provide your email address
ftp> bin				# set the transfer mode to "binary"
ftp> cd out				# change directory to the "out" directory
ftp> get sample.tar			# transfer the results (assuming tar results request)
ftp> quit				# end the ftp session

 

 

What to transfer: file names and formats

The audio file and the text file should have the same base name but with two different extensions, or file name suffixes. The extension for text files is ".txt" and the extension for audio files is one of ".raw", ".au", ".aiff", etc., (lower case!) depending on the audio file format, as described below and in the audio file format page.

The text file should be a plain ASCII file containing the sequence of words spoken in the audio recording, written using standard written American English spelling conventions. Do not include titles, comments, actor directions, etc. in the text file, but only what was spoken.

The audio file can be processed by the LSM in any one of the following formats, listed with their filename extensions. The file format is identified to the LSM not by its header or other contents, but by the filename extension itself, so you must name the file with an extension in this table for the LSM to process it correctly.

      .raw      Raw binary 16-bit linear waveform files (no header).
      .aiff     AIFF files  used  on  Apple  IIc/IIgs  and  SGI.
      .au       SUN Microsystems AU files. 
      .voc      Sound Blaster VOC files.
      .wav      Windows 3.1 .WAV RIFF files.
      .auto     Automatically guesses the file type; but this may fail.

The sample rate used should be either 16000 or 8000 samples per second. For best results, digitize the audio at one of these rates rather than converting the sample rate with a quick-and-dirty tool such as "sox" which introduces spectral modifications that do not improve synchronization performance.

 

 

Copyright © 1996-2003 Sprex, Inc. All rights reserved.
Modified: April 8, 2003