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New features needed!

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PostPosted: Thu Sep 23, 2004 7:23 pm    Post subject: New features needed! Reply with quote

I have used Wavesurfer for a long time. It's really a useful tool for speech analysis and visualization.

I want to add some new features to it.
(1) . for a opened file, i can create a new pane, and load an existing feature file (e.g. pitch file generated using a new algorithm) and display it. At the same time, it should be synchronized with other panes when playing. Also for the zoom in, zoom out and other GUI functions.

(2). open a existing feature file, display it on an existing pane. (e.g., load a pitch feature file generated from a new algorithm and display it on the spectrogram).

I think this is convenient for speech analysis.

I want to implement this function by myself, could you please give me some suggestions? if it works, i hope to share it with others.

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Joined: 16 Aug 2002
Posts: 371
Location: KTH, Centre for Speech Technology

PostPosted: Fri Sep 24, 2004 2:42 pm    Post subject: Reply with quote

It seems to me that the functionality you request is already there, but I might have understood you wrong. What you need is the "dataplot" pane.

To see how it works follow these steps:
Open short sound file and generate it's pitch contour (Create Pane ->Pitch Contour)
Save the pitch values with "Save Data File..."

Now create a dataplot pane and choose "Open Data File...", be careful to specify the extension as .f0 to match the exported file name. Several curves will be plotted one of them resembling the pitch contour. Using Properties | Data Plot set column 1-3 to "" and plot column 0 with "Dots". Set plot value bounds to min 0 and max 400. The plots should now be identical.

If you want to plot on top of a Spectrogram just set Backdrop type to "Spectrogram".

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