NEWS

24.12.2006   New version 1.9.5 of RTSynth for both ALSA and jack is available for download.

Please have a look at Changelog for more details.

18.10.2003   New improved and cleaned-up version 1.9.2 is available for download.

Please have a look at Changelog for more details.

21.12.2002   2nd jackified version of RTSynth is available.

You need jack-0.44.0 from CVS (Dec 20) to run it. Please have a look at the included README file.

7.12.2002   Demo song for version 1.9.0 available.

I found a little bit of time to play around with my program... going through some Midi files i found a rather nice version of "New Year´s day" by U2 :)
An archive containing the Midi file and the RTSynth file can be get here: U2_NYD_Demo_1.9.0.tgz
You will need a rather fast machine (AMD XP1700 or better) for play back, sorry (pls have a look at the included README).
I would love to make a Vobis-OGG audio file of this demo song available for download but that would exceed my disk quota.
Enjoy :-)

17.11.2002   The blue edition reached another milestone on its way to version 2 -> version 1.9.0.

Eleminated stabilitiy problems. No more wild going flute sounds or drums that kick out their resonators.

Improved PM-resonator effect. This multi resonator adds a body to your sounds and can also add some non linear effects of the body which depends, like with real instruments, on the playing loudness. The build in preset "Organ Rock" is an example for the non linear effect.

Preset sounds have been updated.

Updated documentation -> a 2nd draft of a manual (manual.pdf) is available.

"Renovated" the quite old DSP core a little bit to fit to modern CPUs by removing lookup-tables and replacing approximations by their exact formulas.
Benefits:
- The application is not bound to a fixed sampling rate anymore. As there is still some work to do in the effect section the supported range is for now limited to the range 44100-48000 Hz.
- Audible increase of overall tuning.
- The string synth has now the long missing pitch bend with a selectable range of +/- 0-4 half-tone steps. A step size of zero will switch back to the old behaviour. (pitch-wheel -> filter) NOTE: As this is a somewhat CPU intensive task you should switch pitch bend only to on when you really need it!
Disadvantages:
- Eats some more CPU cycles ;-)

Added md5sum of the archive to the download section.

A version with jack support will be available again soon.

This demo was made with the upcoming new version of RTSynth (hopefully finished in a couple of weeks) which will have support for multiple sample rates and will introduce pitch bending!

25.09.2002   Version 1.7.0-jack0.34.0, first version with jack interface. Note: the archive contains an executable and the jack client source code but no documentation or examples.

07.06.2002   Version 1.7.0 with experimental drum synthesizer kit... more in Changelog.

11.05.2002   Bugfix version 1.6.11

• A problem in the voice allocation of the polyvoice synth which may caused dropping of notes has been fixed! This problem occurred only with voices that had been setup with a long release time.

• added function "continuous energie flow" to string synth. (see Changelog)

• Some bug fixes, including fix of redraw problems in the main window.
• On start the last machine state will be restored.

04.04.2002   RTSynth version 1.6.8 is available. Please get your copy from the public archive server ibiblio.org/pub/Linux/apps/sound/midi or it´s mirrors.

• This version is for ALSA version 0.9.
• Added command line option to set the audio fragment size.
• Added small configuration dialog.
• Improved tracking of pitch-bender in string and flute synth.
• Added optional "auto pan" mode.
• Added support to control synth parameters by MIDI controllers.

• Support for ALSA (version 0.5) Midi and audio (build on SuSE 7.3).
• Added some small Midi examples with machine states.
• Added optional output limiter to prevent audio volume overflow.
• Changed internal sample format from 32 to 64 bit floating point for better sound quality.

• I got a request from SuSE ... as a result RTSynth hopefully will be part of the SuSE 7.1 Linux distribution :)
• RTSynth got a nice review in Dave Phillips´s excellent book "Linux Music & Sound".

A big Thank to Dave Philllips for maintaining the Sound & MIDI Software For Linux page.

07.06.2000   Version 1.6.5: Added the public domain version of "Freeverb" written by Jezar at Dreampoint - http://www.dreampoint.co.uk

02.05.2000   Version 1.6.4 is out! Added possibility to save/load/insert/clear RTSynth's machine state and a bit more... see ChangeLog for more info.

24.04.2000   Version 1.6.3 has been released. This version is for glibc-2.1 based systems. See the ChangeLog for what's new.

10.03.2000   A version for Red Hat 6.1 based systems is now available.

04.02.2000   The RTSynth home page is up again :)
 

13.07.1999   Version 1.6.2b

- this is just a bug fix version. Small bug in EFX universal filter fixed.
 

05.06.1999   Version 1.6.2

- added support to run several synth/effect-modules, a new mainpanel and some minor bug fixes mainly for linux 2.2.5 based systems.
 

Screen shoots

     main panel ,  string panel ,  flute panel ,  effect panel .

A small sound example guitar.mp3 (1066965 bytes). It was produced with RTSynth directly coupled to the Jazz++ midi sequencer on my slowly Cyrix-166 machine and re-recorded from an ugly tape deck ;)
Here is another heavy.mp3 (887232 bytes) one using distortion and resonance filters. The drums and other voices are from an Alesis S4 synth. This time the Cubase midi sequencer on my good old Atari ST was used.

Documentation:

         manual.pdf  (2356468 bytes)
 

Latest versions:

       rtsynth-1.9.5-alsa+jack  (2431995 bytes), (9fd325a3dc39535078299104c162887a *rtsynth-1.9.5-alsa+jack.tgz).

       rtsynth-1.9.2  (1435703 bytes), (497246b368d472fc4dd9617fd49b0c7d *rtsynth-1.9.2.tgz).

       rtsynth-1.9.1b-jack0.44.0  (824399 bytes), (ab43f08df2f393c293ffac57b65d6c21 *rtsynth-1.9.1b-jack0.44.0.tgz).

       rtsynth-1.9.0  (2952477 bytes, documentation is included), (7cb39334452539c62fb985201229cd3f *rtsynth-1.9.0.tgz).

       rtsynth-1.8.0  (1062313 bytes), (9910397e8c162953792a6b0435bd6496 *rtsynth-1.8.0.tgz).

       rtsynth-1.7.1  (1003283 bytes).

       rtsynth-1.7.0-jack0.34.0  (711690 bytes).

       rtsynth-1.7.0-ALSAv0.9  (914734 bytes).

       rtsynth-1.6.11-ALSAv0.9  (828319 bytes).

       rtsynth-1.6.10-ALSAv0.9  (828897 bytes).

       rtsynth-1.6.9-ALSAv0.9  (827553 bytes).

Last version for OSS:

       rtsynth-1.6.5b  (758088 bytes).

Last version for libc5 based systems:

       rtsynth-1.5.6.tgz

You can contact me via web mail at stefan@virtualtourist.com.

Last update: Oct 18 2003, Stefan Nitschke