i wants to draw a waveform (like you can draw waveforms in Native Instruments Absynth) and read this out and play with variieng speed... Like an wavetable oscillator...

draw-waveform-in-table-and-play-loud

there are many different ways. here is one:

table, itable, multislider can all do this, just use peek~ to write to your buffer~ and play back with groove~. You can also use waveform~ in draw mode and draw into the buffer~ directly, though the other options give you the list to play with and can be used with preset and pattr.

https://cycling74.com/forums/common-max-arcana

Draw Waveform in table and play loud