VoiceApp works by reading audio directly from your
soundcard (in Linux it's file /dev/dsp), and transforming data via FFT.
The result is thrown on the screen in matrixish colors ;).
-s -m -4 shaggy-bombastik.mp3 ¦ ./voiceapp -w 600 -s (version 0.4.2)
0.4.2 in action here(220k).
(??) -- developed on PPro200/GF2PCI and eats 10%..
SDL (Simple DirectMedia Layer) -- www.libsdl.org.
FFTW (Fastest Fourier Transform in The West) -- www.fftw.org.
Linux (www.linux.com) -- VoiceApp sets some
linux (OSS/Free??) specific settings, so porting it onto
other platform is not easy. (as a side note, I have somewhere sources for
same-kind app using DirectSound & MS Windows things..).
To get them under debian/unstable (don't know about stable):
(needed to compile)
Please verify that your Microphone / line-in is not 'muted'.
VoiceApp needs some data input to work..
- Power spectrum is shown after 'Bezier -curve'
-fitting, use '-red', '-green' and '-blue' command line modifiers to
produce more interesting colors.
- For example: ./voiceapp -red
0:0:0.2:1 -green 0:0:0:1 -blue 0:0.1:0.9:1 gives nice result.
- Try ./voiceapp -s < /dev/hda as root..
- Try whistling into microphone.
- Please do make strange voices ;)
- Beat Detection (FFT again over power-sum)
- [even] Better font handling (should be
mappable directly to chars, so we can print anything we want..)
- more printable info.
- esound integration.
- improve FFT from a file. (slow-pace)
- pausing & snap-shotting.
- display of conventional tone when over some
freq (440Hz = C1)
- tons of things I've ever dreamt of =)
- directionality of new data.
- data interpolation on higher sample-counts.
theoretically we have the horsepower, this would also soften out
27 - 05 2003 17:31 | /code/voiceapp/about | Comments 0
| Comments 0
0.4.2 released. This adds many new features & bug-fixes.
- Added "-sleep" switch which makes
VoiceApp sleep for a while, this helps if you know the rate at which data
is coming in.
- Added "memory-manager", now we can FFT
in as small steps as we want. (overlapping as wanted).
- Re-organized source, so XMMS
plugin is possible (yes I got it running, but don't know how to compile on
other's systems, so it's not available now.)
- Only half of inputted data was actually FFT'd,
(I shall remember that read() reads bytes, I shall remember that read()
reads bytes.. ;)
- Made a move to autoconf & automake, now
just ./configure && make. Don't make install,
however, as it does no good.
- Added "slice" display of FFT (some
call it analyzer), and also dislpay of raw sound-data (scope).
- Added "angle" display of FFT
(calculated from FFT, it's angle at which data is left to point out.) At
the moment it looks pretty meaningless, but may prove handy.
- Switched from "square-root" -system
to real desibels. I think I got it this time somewhat right.
- Many smaller tweaks.
- Oh yeah, while you're 'root', try voiceapp
-s < /dev/hda, sure looks fun ;)
24 - 05 2003 03:02 | /code/voiceapp/011125 | Comments 0
of brown paper-bag. 0.4.3 out.
- Fixed (hopefully) configuration issues,
configure.in was horribly mutated.. Thanks go to Steve Manley and Heiko
Beiküfner for pointing these out.
24 - 05 2003 02:28 | /code/voiceapp/011105 | Comments 0
0.3.5 out, highlights of this release are:
- New command-line options (don't fit in --help
anymore, there's only reminders now).
- Colors are now configurable (You may find it
interesting to get to know what bezier curve is)
- Font is now bitmapped and is in
voiceapp_font.bmp, it's 7x8 for now, but i'll make it
- Some speedup because font is now blitted
directly to the screen.
- New display mode called ShiftView, as
the name says it just shifts view from right to left, use it if you have
cycles to burn, as currently it's a processor-hog.
24 - 05 2003 02:27 | /code/voiceapp/010529 | Comments 0