Why doesn't plugin foo work in applyplugin?

Applyplugin doesn't obey the LADSPA_RANGE hints (It's not reqired to). Several of my plugins are amplitude dependent and thye guess that the nominal 0dB of the system is +-1.0f (refer to arguments on the linux-audio-developers mailing list if you're confused). This is true for nearly every system except applyplugin.

Workaround: add "amp_1181.so amp -89" before the plugin you want to use adn "amp_1181.so amp +89" after, or, install ecasound - it has actual features too ;)

Update: the pre-release of the LADSPA 1.1 SDK fixes this problem, you should get a copy of that if you want to use applyplugin.

What licence are they available under?

The GNU General Public Licence.

Are they available for systems other than LADSPA?

Not that I know of, but there are LADSPA wrappers for pd, and possibly other systems.

What plugins have you written

Here is a list of the plugins that I have working to date.

Listed next to them is the amount of CPU power they take when running, and the number of PIII cycles they use per sample. Those aren't particularly wonderful CPU usage measurments, but its really hard to get anything accurate and meaningful. Expect it to vary from machine to machine a lot anyway.

The name of each effect is linked to what documentation I have for it. The documentation is viewable as PDF and HTML.

UID Name PIII MHz Cycles /
sample

1407 Aliasing 0.1 1

1895 Allpass delay line, noninterpolating 1.6 35

1896 Allpass delay line, linear interpolation 1.2 26

1897 Allpass delay line, cubic spline interpolation 3.4 78

1433 AM pitchshifter 6.6 150

1181 Simple amplifier 0.2 3

1416 Analogue Oscillator ??? ???
1893 Glame Bandpass Analog Filter 1.1 25

1892 Glame Bandpass Filter 13.9 315

1431 Bode frequency shifter 26.9 610

1432 Bode frequency shifter (CV) 29.8 675

1902 Glame Butterworth X-over Filter 1.4 32

1903 GLAME Butterworth Lowpass 1.1 25

1904 GLAME Butterworth Highpass 1.1 25

1430 Chebyshev distortion 10.1 229

1190 Comb Filter 6.5 148

1889 Comb delay line, noninterpolating 1.3 28

1887 Comb delay line, linear interpolation 1.2 26

1888 Comb delay line, cubic spline interpolation 3.1 70

1411 Comb Splitter 6.4 145

1404 Crossover distortion 1.3 30

1207 DC Offset Remover 0.5 11

1886 Exponential signal decay 0.1 3

1202 Decimator 0.5 10

1195 Declipper 0.2 4

1898 Simple delay line, noninterpolating 1.2 27

1899 Simple delay line, linear interpolation 0.7 16

1900 Simple delay line, cubic spline interpolation 2.8 63

1402 Delayorama 27.2 615

1185 Diode Processor 0.6 12

1186 Audio Divider (Suboctave Generator) 2.5 56

1901 DJ EQ 7.8 177

1438 DJ flanger ??? ???
1403 Dyson compressor 45.3 1028

1192 Fractionally Addressed Delay Line 11.5 259

1191 Flanger 14.2 322

1415 FM Oscillator 7.7 175

1213 Foldover distortion 0.6 14

1196 Fast overdrive 1.6 37

1418 Frequency tracker 1.0 23

1410 Gate 3.6 81

1921 Gate 3.6 81

1922 Stereo Gate 4.1 93

1437 Giant flange ??? ???
1424 Gong model 60.5 1371

1439 Gong beater 1.6 37

1215 GSM simulator 87.4 1981

1216 GVerb 43.8 993

1413 Hard Limiter 18.8 425

1220 Harmonic generator 2.3 53

1200 Hermes Filter 36.6 830

1890 Glame Highpass Filter 7.5 170

1440 Hilbert transformer 19.0 429

1199 Impulse convolver 159.8 3622

1885 Nonbandlimited single-sample impulses (Frequency: Control) ??? ???
1429 Inverter 0.1 2

1409 Karaoke 0.7 15

1436 L/C/R Delay 7.8 176

1435 Lookahead limiter 13.6 308

1906 Lookahead limiter (fixed latency) 14.4 325

1891 Glame Lowpass Filter 7.5 170

1421 Matrix: MS to Stereo 0.5 11

1422 Matrix Spatialiser 1.2 26

1420 Matrix: Stereo to MS 0.7 16

1197 Multiband EQ 19.7 447

1419 Modulatable delay 5.2 116

1201 Multivoice Chorus 19.7 446

1894 Mag's Notch Filter 14.8 334

1217 LFO Phaser 13.8 312

1218 4 x 4 pole allpass 9.4 212

1219 Auto phaser 5.9 133

1193 Pitch Scaler 1864.6 42280

1194 Higher Quality Pitch Scaler 8201.1 185966

1423 Plate reverb 40.9 927

1417 Rate shifter 3.8 86

1208 Retro Flanger 35.0 793

1605 Reverse Delay (5s max) 4.0 90

1188 Ringmod with two inputs 0.3 6

1189 Ringmod with LFO 7.4 167

1408 Barry's Satan Maximiser 2.0 45

1425 SC1 3.8 85

1426 SC2 3.6 81

1427 SC3 ??? ???
1882 SC4 6.4 145

1883 SE4 6.4 145

1187 Wave shaper 7.6 173

1210 Signal sifter 24.9 565

1881 Sine + cosine oscillator ??? ???
1203 Single band parametric 1.3 29

1198 Sinus wavewrapper 4.2 94

1414 Smooth Decimator 2.8 63

1406 Mono to Stereo splitter 0.3 5

1212 Step Demuxer ??? ???
1401 Surround matrix encoder ??? ???
1214 State Variable Filter 6.5 147

1211 Tape Delay Simulation 26.6 602

1206 Transient mangler 10.2 232

1204 Triple band parametric with shelves 6.4 145

1209 Valve saturation 7.4 168

1405 Valve rectifier 9.8 222

1905 VyNil (Vinyl Effect) 22.3 504

1412 Wave Terrain Oscillator 0.8 17

1428 z-1 0.1 2

How to contact me

If you want to contact me about these plugins, the best bet is through the LADSPA or LV2 github pages.