@@ 446,6 446,51 @@ high-pass filter by Robert Moog. The filters attempt to accurately emulate
the non-linear circuit elements of their original analog counterparts.")
(license license:gpl2+)))
+(define-public vco-plugins
+ (package
+ (name "vco-plugins")
+ (version "0.3.0")
+ (source (origin
+ (method url-fetch)
+ (uri (string-append
+ "http://kokkinizita.linuxaudio.org"
+ "/linuxaudio/downloads/VCO-plugins-"
+ version ".tar.bz2"))
+ (sha256
+ (base32
+ "1xzqdg3b07r7zww05y9bb737l9dxvfkv28m3fyak1aazaci3rsgl"))))
+ (build-system gnu-build-system)
+ (arguments
+ `(#:tests? #f ; no "check" target
+ #:phases
+ (modify-phases %standard-phases
+ ;; no configure script
+ (delete 'configure)
+ (add-before 'install 'prepare-target-directory
+ (lambda* (#:key outputs #:allow-other-keys)
+ (mkdir-p (string-append (assoc-ref outputs "out") "/lib/ladspa"))
+ #t))
+ (add-after 'unpack 'override-target-directory
+ (lambda* (#:key outputs #:allow-other-keys)
+ (substitute* "Makefile"
+ (("/usr") (assoc-ref outputs "out"))
+ (("/bin/cp") (which "cp")))
+ #t)))))
+ (home-page "http://kokkinizita.linuxaudio.org")
+ (synopsis "LADSPA plugin for synthesizer oscillators")
+ (description
+ "The @code{blvco} LADSPA plugin provides three anti-aliased oscillators:
+
+@enumerate
+@item Pulse-VCO, a dirac pulse oscillator with flat amplitude spectrum
+@item Saw-VCO, a sawtooth oscillator with 1/F amplitude spectrum
+@item Rec-VCO, a square / rectange oscillator
+@end enumerate\n
+
+All oscillators are low-pass filtered to provide waveforms similar to the
+output of analog synthesizers such as the Moog Voyager.")
+ (license license:gpl2+)))
+
(define-public fluidsynth
(package
(name "fluidsynth")