Messages

1

Host Forum: Sonic Visualiser / Re: Batch Processing .svl annotation files

« on: May 02, 2010, 09:37:30 »

Yes Please! You are right.

.svl and .csv files do not carry the same data. I am at the point now where I need both data sets to work with.

a .svl file carries precise time data at precise or as close as  possible to iincriments of .02 seconds each. It is matched with (in my own case) power levels or decibel levels. There is, nowever, no way to match this information with a bar count or any way to find a corresponding spot in a piece of music.

It would be most helpful to have the DTD  and the XSL for his file type. It  isn't that we don't have applications to read the file, the applications do not recognize the extension as a valid XML document.

I am working with Open Office, the extension for Lilypond and OpenOffice Calc at the moment and I am at a standstill until I can match power or decibel levels with precise points in a score and a sound file.

Does anyone have any idea of how to do this?

thanks.
davidf

2

Host Forum: Sonic Visualiser / geting Sonic Visualiseer to use a specified codec

« on: June 11, 2009, 21:13:46 »

Sonic Visualiser (like most audio players in Ubuntu) does not know how to decode an Apple Lossless sound file. However, I have discovered that the alac-decoder (/usrle/bin/alac-decoder) is the codec for decoding apple lossless files. I have gotten VLC Player to use this codec, but do not know how to get Sonic Visualiser to use this codec to decode music files.

Is this possible? If so, how do I do it? I really do not want to compile Sonic Visualiser just to do this it would likely be easier but far more time consuming to decode the files on my much slower Mac lap top then transfer them to my eeepc.

Hopefullyhttp://www.sonicvisualiser.org this is a  trivial procvess (getting SV to use alac-decoder)

3

Host Forum: Sonic Visualiser / Re: SV 1.5 compilation does not recognize pulseaudio and portaudio

« on: May 01, 2009, 00:58:03 »

If   you are sure you have all the libraries and dev packages needed then the only thing to ask is what command did you use when you ran ./configure? If you could show us that, it would help to clarify what exactly has happpened. As well, the exact compiler error you are getting.

cheerrs,
davidf

4

Host Forum: Sonic Visualiser / Re: Spectrograms

« on: May 01, 2009, 00:53:22 »

At the risk of oversimplifying things, a spectrograph is essentially a visual spread sheet of the pitch data from your audio file. It's read out includes not only the numbers you would expect in a spread sheet, but also a visual representation of the pitches. The visual represeentation of the pitches can be changed at your pleasure for what ever purpose you need.

In Sonic Visualiser, letting your cursor hover over a pitch area should give you a text read-out of the exact pitches in pitch names then plus or minus x number of cents. If I'm not mistaken, one cent is a quarter of a semitone.

Aside from the exact pictches in Hz, or pitch names (which is imperically correct so far as is possible) the visual representation is to allow you to interpert the data in some way which makes the analysis of the sound file clearer to you or your audience.

It LOOKS far more complicated than it really is. Much of spectrographic data is made clearer by the way you configure the colour scheme. Sonic Visualiseer has a number of them built in (which you have probably already disscovered).

cheeers,
davidf

5

Host Forum: Sonic Visualiser / Is it posssible to make two (or more) specific layers active at once?

« on: May 01, 2009, 00:43:45 »

I have found it necessary to have an Time Instances layer and a Spectrograph layer active at the same time. Is there a way to select two specific layers and make them active at the same time? I  need to see the pitches and the time instances at the same time. It is the time instances I'm trying to edit, I just need the spectrograph data to make sure I'm at the right place in a large orchestral score.

thanks,
davidf

6

Host Forum: Sonic Visualiser / Screen corruption when using Mazurka Power curve plugins

« on: April 18, 2009, 08:45:36 »

Hello:

I've been getting horizontal lines and/or solid colour when when adding the Power Curve Mazurka plugin to a project. I had thought it was some strange curve happening until I hit play, then as the cursor passed over the  playback point the corruption disapeared and the real power curve was left behind.

However, it comes back each time a new page passes by and leaves as the cursor passes over it. If I switch away from the power curve tab, the corruption disappears, but will be back if I return  to that tab.

When I looked  at the command prompt I started SV from I found one error:

Code: [Select]

librdf fatal - Cannot add statement to model


I checked to find out what librdf was, and also if it was installed. Yes, librdf0 is present, librdf0-1.07-1

Any ideas on what this is all about?

I'm running an eee pc 1000 with 1 gig memory and Ubuntu "Intrepid Ibix"

cheers,
davidf

7

Host Forum: Sonic Visualiser / Re: What about FLAC?

« on: April 18, 2009, 08:12:00 »

Sorry for not getting back sooner, I've been working on a school project using SV !

Soon as I installed Sonic Visualiser 1.5 I had FLAC access almost as fast as AIFF or WAV. SV 1.5 flies compared to the old version.

FLAC will be really good, I'll have to introduce it to my professor. Running Windows I guess he hasn't run into FLAC and hasn't considered what a space saving it is when dealing with as many audio files as he deals with (and our class).

I've been breaking up larger works for analysis at least partially because any graphs I generate using a spread sheet or presentation software become completely unwieldy if you attempt to do a whole sonata or symphony movement.

I could go on, but I'll be off topic!

thanks,
davidf

8

Getting and Using Vamp Plugins / Re: Mazurka Plugin on eee pc running Ubuntu Linux

« on: April 03, 2009, 20:24:07 »

Hello:

Well, I usually start Sonic-Visualiser from the command-line since the Gnome Metacity interface creates no icon for it on my desktop. However, since it starts so fast on this machine the notices in the shell go by blindingly fast. BUT.. I should have paid attention.

Code: [Select]

Failed to load library /usr/lib/vamp/MzPitchPower.so: libstdc++.so.5:
That was the crucial error message. sudo wagig status llibstdc++5 states N/A meanign its not there. I downloaded the package and installed it and the Mazurka Plugin now works.

I was started to  wonder why dpkg didn't alert me to the problem, however I remembered that although the main program was installed using dpkg, most of the Plugins were not. I simply dropped them into the correct place in the system.

Now back to the tutorial to discover how to use these new plugins

9

Host Forum: Sonic Visualiser / Re: What about FLAC?

« on: March 27, 2009, 23:46:23 »

Let me add my vote to the request for FLAC support. I've used FLAC compression successfully for quite some time. I am satisfied that it is truly lossless audio compression. Fils compressed with FLAC can be uncompressed to produce an file check summed to be the same as the original. The uncompressed WAV or AIFF files playback sucessfully.

The only problem I can see is the added overhead for on-the-fly decompression of the FLAC file for audio analysis. It will always be faster and more efficient for Sonic Visualiser to use uncompressed files.

I may start storing my audio files in FLAC format and only decompressing them for analysis.

cheers,
df.

10

Getting and Using Vamp Plugins / Mazurka Plugin on eee pc running Ubuntu Linux

« on: March 26, 2009, 01:41:34 »

Hello:

I've installed Sonic Visualiser and  a number of other plugins. The extra plugins whose names begin with Mz show in SV, however, mazurka-plugins.so does not seem to be showing in SV at all. Specifically I was looking for the Power curve.

My machine runs an Intel Atom 1.6 Ghz with 1 Gig of memory on a solid state drive.

mazurak-plugins.so is installed (with all the other plugins) in /usr/lib/vamp/

Any suggestions as to why just the mazurka plugins are not showing up?

My guess is that they might not have been compiled for this particular x86 processor in mind.

cheers,
davidf