In his spare time to file an extension for chrome( link to the extension, who cares
), which is engaged in the processing of music in the VC using the Web Audio API, a feature which has a visualiser of music(frequency bar graph). In short it is the thing which the input is an array of numbers and output should draw some number of rectangles, the height of which corresponds to the numbers in the array. It is necessary to draw quickly, 30-60 times per second.
The actual question what to choose for implementing such a thing? It is important to eat fewer system resources, and to work quickly. Looked at css transform, stared at optimization of work with canvas, but the final decision can not accept. Help, please, who has experience with such)