[527] in linux-announce channel archive
svgafft-0.2b alpha
daemon@ATHENA.MIT.EDU (Lars Wirzenius)
Fri May 5 13:33:55 1995
Date: Fri, 5 May 1995 18:18:05 +0300
From: Lars Wirzenius <wirzeniu@cc.helsinki.fi>
To: linux-activists@niksula.hut.fi, linux-announce@vger.rutgers.edu
X-Mn-Key: announce
Subject: svgafft-0.2b alpha
From: drewvel@ayrton.eideti.com
Newsgroups: comp.os.linux.announce
Keywords: svgalib, FFT, analysis, signal
Organization: ?
Approved: linux-announce@news.ornl.gov (Lars Wirzenius)
Followup-to: comp.os.linux.development.apps
References:
*******************************************************************
SVGAFFT signal analyzer
for Linux
0.2b alpha
*******************************************************************
Changes Since 0.2:
---------------------------------------------------
5/1/95
0.2b alpha
***
- maintenance release, fixes for compilation
under gcc 2.6.3
***
- line-graph display added and made default
- miscellaneous code cleanup and some bug fixes
- removed 8-bit versions of example configurations
and updated some of the existing examples
---------------------------------------------------
This is an alpha release of a realtime signal analyzer for Linux. It
uses the /dev/dsp device and currently supports 16-bit and 8-bit
sample resolution on supported Linux soundcards.
What is being developed is what will hopefully eventually be a package
designed for visualization of fourier coefficient data and further
down the line a method of editing data for playback. Its alpha state
along with my time limitations preclude its use for accurate readings
however. In other words, I don't recommend using it as a real signal
analyzer until further notice!
SVGAFFT requires a high-resource environment and a fast processor
(>=486DX/33). It is currently in development but it is far enough to
be somewhat useable. Eventually there will be more optimization
including processor-specific assembler.
*** Needed to run
-----------------
Currently this only runs under Linux, but eventually an X Windows
version should be available that is more portable. The binary
requires svgalib [and a compatible card], a Linux sound driver
compatible card with a valid dsp device, a math-coprocessor
(preferably a 486DX/33 or higher), and a low-load machine. Portability
currenty prevents a high degree of optimization, but other options may
pursued in the future to improve performance. Kernels of 1.2.0 and
over have been tested. Some DMA problems have been reported with
earlier kernels.
*** Needed to compile
---------------------
To compile the sources g++ 2.6.3 (gcc) is needed along with the
SVGAlib libraries (libvga + libvgagl) version 1.2.x. If you have
kernel older than 1.2.0, well, it's about time you upgrade ;-).
*** Availability
----------------
The archive includes a binary and should be available sometime this
week 5/1/95 on sunsite in the /pub/Linux/apps/sound directory or on
tsx-11.mit.edu in the /pub/linux/ALPHA/svgafft directory.
*** Copyrights & Disclaimers
----------------------------
Everything but the FFTs are under GPL copyright by the author.
Andrew
5/1/95
*****************************************************************
Please send bug reports,
comments and suggestions to:
Andrew Veliath
email to: drewvel@eideti.com
*****************************************************************
--
Send submissions for comp.os.linux.announce to: linux-announce@news.ornl.gov
PLEASE remember Keywords: and a short description of the software.
