readme.af

ears-0.32, linux下有用的语音信号处理工具包

Note from Sep-96:
Porting to AF should be easier with version 0.24 and up.  The only relevant
files should be modules/sound_af.* which are lacking some functions due to
me not having an AF system.
ralf
-------------------------------------------------------------------------------

Niels Thorwirth <[e-mail]> writes
about ears on platforms having AF-Tools:
-------------------------------------------------------------------------------------

EARS for UNIX

diff ears_for_UNIX ears_for_LINUX :

it can only read 16 bit linear sound-data. it requires AF-tools (see below) 
but it 's not suitable for all networks, because the only very small 
parts of sound are recorded at once and AF can't handle that.
it does only work with RASTA and NDTW witch are the defaults 
and anyway the only satisfieing combination.

REM : the training.cc may not run with compileroption -O3
      remove this option in training.cc compiler command and compile again.
      Restart make.
 
Make sure:

- you've installt AF and added it's includefiles and libs
  to your config.sh script, path or compiler command-line.
- you've started the AF Server (ie Aj300). You'll have to
  start it in background ( & ).
- there is an AF-Server channel with 16bit linear input.
  if there are recording problems
  try write device number in .earsrc .
  -1 (default) will look for a suitable device.
- you have an Ogi libnspeech.a that is in ears/lib and fits you system.
  if it's not already there: get a version of OGI (see lib/README)
			     make a libnspeech.a
			     copy libnspeech.a to ears/lib.libnspeech_x.a
			     (x stands for a extension to distinguish it from other libnspeech.a)
		  	     add the libnspeech_x.a in config.sh script.
TODO:

-adjust the other Ogi-routines so all features will be available.
-implement HMM 

PLANS:

-read from file.

Hint:
-Pay attention to the recording. With a bad recording you are not able to see
what ears can do.
-If you want to make Ears working in a network change  frame_ms (line 70) to
a higher value. 
-------------------------------------------------------------------------------------------------

from the AF README:

The AF System is a device-independent network-transparent system including 
client applications and audio servers. With AF, multiple audio applications 
can run simultaneously, sharing access to the actual audio hardware.

AF Server
---------

This distribution of AF includes server support for Digital RISC systems 
running Ultrix, Digital Alpha AXP systems running OSF/1, SGI Indigo running 
IRIX 4.0.5, Sun Microsystems SPARCstations running SunOS 4.1.3, and
Sun Microsystems SPARCstations running Solaris 2.3.

Kit Location
------------

The kit is located at ftp site crl.dec.com (Internet 192.58.206.2) in 
/pub/DEC/AF.  The following are the kit names that will be used for AF3.

        AF3R1.tar.Z             # Released version of AF3R1
        AF3R1-patches.tar.Z     # Collected set of all known patches to AF3R1
                                # See ./patchlevel.h to find your current
                                # patch revision.
        AF2R2-other.tar         # Example sounds bites.
        AF3100.alpha.tar        # Alpha OSF setld kit
        AF3100.mips.tar         # Ultrix/RISC setld kit

Use anonymous ftp to retrieve the file,

        % ftp crl.dec.com
        ...
        ftp> cd /pub/DEC/AF
        ftp> binary
        ftp> get <kit_name>

The kit is shipped as a compressed tar file.  To unpack the kit,

        % cd <audio_root>
        % zcat <kit_name> | tar xpBf -

We also provide a sample kit of Hi-Fi sound bites for use with DECaudio. 
If you have a DECaudio, you might considering retrieving AF2R2-other.tar
and unpack this kit in the same manner as described above.

Other files available in this same directory are the release notes, 
copyright notice, and this README file.

Attention Mosaic Users! AF Related URLs
---------------------------------------

Papers and technical reports,

        ftp://crl.dec.com/pub/DEC/CRL/tech-reports/93.8.ps.Z
        ftp://crl.dec.com/pub/DEC/AF/af-usenix93.ps

Kit location,
        ftp://crl.dec.com/pub/DEC/AF

Documentation (once the kit is unpacked, substitute for <audio_root>)

        file://localhost/<audio_root>/AF.html

To start Mosaic with the AF hypertext documents, 

        % Mosaic <audio_root>/AF.html &

Roadmap
-------

Several directories will be created in your local audio root directory. The 
"AF" sub-tree contains the source code for the AF server, the AF client 
library, and several AF client programs.  The "devices" sub-tree contain 
device drivers for several audio devices. Finally, "sound_files" contains 
several sound bites you can use while verifying the kit installation.

The kit requires approximately 6 Megabytes and an additional 8 Megabytes 
for building and installing the release.  The HiFi sound files require 
another 4 Megabytes approximately.

Documents
---------

You should read the following documents prior to installing this software.

o  AF Release Notes - <audio_root>/docs/RELNOTES.{txt,PS}

o  Copyrights information - <audio_root>/COPYRIGHTS