#WAVESURFER WIDTH SOFTWARE#

I simply rendered the amplitude data for each canvas until I reached the end of that canvas, then filled out the line and repeated with the next canvas.Īfter my initial implementation, I noticed some thin gaps between the canvases. The implementation for the line waveform was similar. If an intersection exists, render the intersection to the canvas My solution for this was to wrap the canvas fillRect calls, and pass them through the following algorithm: For each canvas:Ĭalculate intersection between canvas bounds and waveform bar coordinates This complicates things, as the two parts of the bar need to be rendered in different canvases. Sometimes, a bar needs to be rendered across two canvases Notice that a bar sits right on this line. I've added a red line to indicate a the end of one canvas and the beginning of the next. Trigger on what you expect (widths, glitches, video, logic patterns, etc.) and also trigger on unusual signals (dropouts, intervals, runts, slew.

and narrow the long capture around that event. The below image shows a wavesurfer timeline that uses bars. Teledyne LeCroy WaveSurfer 44Xs X-Stream Windows-Based Oscilloscope Anyone can appreciate a well designed product with all the right. Wavesurfer supports two modes of rendering: lines (a traditional waveform) and bars (looks like a histogram, using average frequency values for each bar). The renderer itself can by used by setting the renderer wavesurfer property to 'MultiCanvas'. The MultiCanvas renderer works by stacking multiple adjacent canvases, the width of which can be controlled by the maxCanvasWidth wavesurfer property. This was my first ever contribution to an open-source project, so I was pretty stoked to have it accepted and receive feedback from others. To work around this, I implemented a MultiCanvas renderer for wavesurfer, which has since been accepted into the repository and released under version 1.1.0. After some research, I found that this was a browser limitation. The one issue I encountered was that large waveforms wouldn't render. Out of the box, wavesurfer comes with navigation, audio playback, waveform generation, and a bunch of other configurations and events to hook into. To implement the timeline, I used the excellent wavesurfer.js.

#WAVESURFER WIDTH SOFTWARE#

One feature of the software is an audio waveform that serves the dual purpose of assisting with animation timings and facilitating navigation of the animation timeline: The Sparkled sequence timeline, including a waveform and synchronised effects Wavesurfer.js I've been busy working away on my LED animation sequencing software and I'm really pleased with the results so far (a future blog post will cover the software in detail). This is my first blog post in quite a while.

Wavesurfer width