#Wavesurfer custom style manual

Will not necessarily display the whole sound. Select Create Pane, and choose what type of pane you want. On the WaveBar or any existing pane where you want to insert the new pane, Use of WaveSurfer's plug-in architechture, a pane can contain pretty much That can contain for example a waveform, a spectrogram, a pitch-curve,Ī time axis or a transcription or something else. A pane is a window stacked on top of the WaveBar ToĪllow for this and many other tasks, WaveSurfer gives you the possibility Representations such as spectrograms or pitch-curves, or maybe you haveĪ multi-channel sound and want to look at each channel individually. You might want to zoom in to look at small portions, you might want other Tasks, a single waveform view of the whole sound might not be sufficient. Right-clicking on the play button brings up a popup menu with different play options. You can use the space bar to toggle between play and Play/Record Use the tape recorderĬontrols to play and record audio.

If your mouse is equipped with a scrollwheel, you can use this for scrolling and zooming in the sound under the mouse pointer: Spinning the wheel up & down will scroll, pressing Ctrl and spinning the wheel will zoom. The left mouse button is used for scrollingĪnd the middle mouse button (or shift-left button) is used for zooming. (Use Ctrl-Mousebutton on the Macintosh.) WaveBar The WaveBar is used The different parts of the interface brings up a popup menu with choices Each sound has a small arrow-shaped button in the upper left corner, that can be used to collapse the view of the sound into only a blue titlebar. You can add any number of sounds (using File | New or File | Open). You can load a sound file from disk or start recording, using the tape-recorder like controls in the upper right corner. When WaveSurfer is first started, it contains an empty sound. The basic document you work with is a sound. WaveSurfer has a simple but powerful interface.

#Wavesurfer custom style manual

The player is loaded into a chrome extension / chrome app so I have the ability to block dev-tools and inspecting frame on the management computers using GPO.Introduction Download Documentation Links Forum User Manual Attempting to keep the encrypted audio as protected as possible. Is it possible to to load the audio in chunks as a stream of decoded data? Obviously this would require some work but I don't know enough about the web-audio API to know if it can support that? I was thinking like chunks loaded into a 'playlist' that would essentially be loaded into a temporary memory cache and destroyed after play. So the audio files are stored on aws and are actually encrypted using a private key. Here is another question that came to mind, completely unrelated. I also noticed I have negative values so technically its not always 0 is it because of the relativeNormalization ? What I thought was looking at the array of data was to compare similar values to find the overlap but in those arrays how much time does each array index represent? would I just divide that by the total duration and then say ok well at these seconds in time they are similar so increment overlapCount ?

Which brings me to my next question in regards to the 0 and 1 that you mentioned. Ok so maybe it is the audio file that I am using but when I was playing with the reflectedPeaks area and or using the example of 'sound cloud' which makes them smaller what happened is half the audio file went below the middle and the other half stayed above. Thanks for taking the time to write that up. Then you can apply that same principle to find overlaps, but I havent given this too much thought and it definitely will require some maths to achieve. You have to refine this algorithm yourself, for example to set a limit on what you consider silence e.g. So lets say you have 2 channels, you can iterate both arrays and find at what index do both arrays contain a 0, and that tells you where you find total silence in both channels at the same time. What PCM data is ultimately is an array of samples in time, if you have normalized them then 0 would represent total silence and 1 would represent peak loudness. They both return the same number for me but I'm not sure what the difference is and which one you should use.Īs for calculating % overlap. To get the canvas width you can check and (). If you want to know at what X position to draw an indicator that should appear 5 seconds into the track then you can use the formula: (5 / totalDurationInSeconds) * rendererWidth and that should return the X coordinate on the MultiCanvas renderer of where to draw your indicator. To draw annotations you can either use the DOM or assuming your custom renderer uses or WebGL then you can just draw those shapes yourself by calculating their X position.