I'd suggest not bothering with LADSPA as it is becoming obsolete. The main limitation for running scripting commands from Nyquist is that you can't run Nyquist scripts from an aud-do command (Nyquist currently does not support multiple simultaneous processes or threads). Most of the scripting commands are also available to Audacity's "Macro" feature (see: ), though with macros you can only run a linear sequence of commands.Ī large portion of the scripting commands are also available to Nyquist via a special "AUD-DO" function ( ). Almost everything that you can do in Audacity manually (via the GUI) can be done via "scripting commands".
"Mod-script-pipe" is the new kid on the block, and has recently received a major upgrade.īasically, mod-script-pipe allows you to control Audacity from an external script (such as Python). In particular, working with FFT is very slow and quite difficult. (push (list (/ count srate) "Sound") labels))Īlthough Nyquist is quite an easy language, it may not be the best approach for everything. (do ((val (snd-fetch sig)(snd-fetch sig)) (let* ((sig (snd-avg sig step step OP-PEAK)) (setf step (round (/ *sound-srate* 100)))
control thresh "Threshold" float "dB" -24 -72 -6
To give an idea of how rapidly features can be developed in Nyquist, (how little code), here is a script that can be run from the Nyquist Prompt effect that will add a label each time the selected audio exceeds the specified threshold: Although Nyquist runs as an interpreted language, many of the primitives are written in C, so with careful programming it is often possible to achieve performance similar to a pure C/C++ application. Prototyping can be very quick as there is a large library of audio related functions. It is based on a dialect of the LISP programming language ("XLISP") with a strong focus on audio. As we use GitHub to host the Audacity code, making a fork is easy, and so long as your custom version does not diverge too far, it should be relatively easy to merge updates from the Audacity code, and to push updates from your version back "upstream" to Audacity.
#Ocenaudio stuck code
Even if you are a highly experienced C++ developer, it is likely to require a substantial amount of time and effort just to gain familiarity with the code base. The code for Audacity is very complex, with around 600,000 lines of code (mostly C++). It is the most flexible, and probably the most difficult. There are pros and cons to each approach, but you need not use just one approach.įorking Audacity is, as you say, the most ambitious. Sorry if it's not the right place to post or not the right way to ask, i'm reading the wiki and the forum but maybe i'm missing something.
#Ocenaudio stuck how to
easy to install : even if i have to learn how to package, create installer or a custom install script, i would like it to be easy for the non-tech end user to install (it's mainly why we can't use our old software anymore).
#Ocenaudio stuck update
easy to update : mainly in the case of a fork, i would like to be able to benefit from the classic audacity updates, without redoing everything each release
#Ocenaudio stuck windows
cross platforms : windows and linux (ubuntu) at least
able to analyse sounds and extract data (to get frequencies, harmonics and later pattern searching, cross correlation, etc), i don't really need to edit the sounds. Using mod-pip : so i could use python which i'm more familiar with, but in the end isn't it like forking audacity ?įor my requirements, i would like it to be : Developing plugins for Audacity : maybe the easiest and fastest way ? But which one ? Nyquist, lv2, vst, vamp. Forking Audacity : maybe the most ambitious one, but our goal is to make some kind of a "real software" for bio-acoustics and not some small utilities, so it may not be a bad idea (plus i could change the interface). instead of me redoing everything.īut i'm stuck with HOW to do it ? So far i found some possibilities : So my idea was to extract (or replicate) useful features from it and add them in a up-to-date "host" like audacity, which would take care of the "common things" like files IO, simple effect, cutting en manipulating sounds. We had for a long time a software developed by someone from the lab years ago (first version was on amiga !) but now this software is harder and harder to install and we need something else. Hi, i'm a technician in a French university ethology laboratory and we are using software to analyse birds and mammals song.
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