Topics

1

Host Forum: Sonic Visualiser / Recalculate Features in Session File

« on: April 19, 2011, 09:27:13 »

Hallo!

I calculate various features on one audiofile, display them in a nice way and store them in a .sv session file.
When I now change the source audio file, Sonic Visualiser displays the audio data of the new file and the features from the old file.
So my question: is there any way to recalculate all features ?

Or maybe there is an other way to do this? I just don't want to layout all features (and colors etc.) every time I open a new file, because it really takes a lot of time ...

Thanks for any hints,
LG
Georg

2

Plugin Development / Get the length of audio file

« on: November 17, 2010, 08:56:06 »

Hallo!

Is it possible to get the length of the audio file which I want to analyze ?

In one algorithm I want to analyze the whole audio file at once and now I am thinking about a good way to do it:
a) I could set the blocksize to the length of the whole audio file (therefore I would need the length of the file)
b) or process the file in small blocks, save them and call getRemainingFeatures at the end

But also in b) I need the file length, because it would be nice to allocate the big buffer arrays before (and not always resize them each block).

Thanks for any hints how this could be achieved in a nice way,
LG
Georg

PS: I am using python/vampy, but I guess the same problem is valid for C++ plugins ...

3

Plugin Development / Vampy numpy problem on Ubuntu

« on: October 02, 2010, 09:40:03 »

Hallo!

First thanks for Vampy - it looks really nice and I am looking forward to try some algorithms and visualise it with SonicVisualiser .
However, I have a problem with the numpy interface (vf_ARRAY) on Ubuntu 10.04, Python 2.6.5 and numpy 1.3.0.

I installed the latest binaries of SonicVisualiser, Vampy - but all Vampy plugins which use the vf_ARRAY interface are not working, the others work.
At startup of the SonicVisualiser I get the following output:

Code: [Select]

    Numpy build information: ABI level: 16777225 Numpy version: 1.1
    Numpy runtime version: 1
    Incompatible Numpy version found: 1
    Please make sure you have Numpy 1.1 or greater installed.
    Vampy: Numpy support disabled.
OK, so I compiled everything myself (Vamp SDK and Vampy, using the latest source from your webpage), still the same output.
Then I set the compiler flag NUMPY_SHORTVERSION=1.3, but again:

Code: [Select]

    Numpy build information: ABI level: 16777225 Numpy version: 1.3
    Numpy runtime version: 1
    Incompatible Numpy version found: 1
    Please make sure you have Numpy 1.3 or greater installed.
    Vampy: Numpy support disabled.
Do you have any clues what I could try to get this working ?

Thanks for any hints,
LG
Georg