dsp-interface
generic, socketed HTML5 interface for digital signal processing with sliders and exponents
npm install dsp-interface
Want to see pretty graphs? Log in now!
8 | downloads in the last week |
17 | downloads in the last month |
Maintainers | |
---|---|
Version | 0.2.6 last updated 2 years ago |
License | MIT |
Keywords | interface, DSP, baudio, HTML5, touch |
Repository | git@github.com:NHQ/dsp-interface.git (git) |
Dependencies | shoe, filed, mdns, domready |
Basic DSP Interface
npm install dsp-interface
Require this real-time, socketed HTML5 / Touch compatible interface for some of your DSP needs. It returns just two arrays, values and and exponents.
var mui = require('dsp-interface');
mui.val[0] = 0 - 11 inclsuive, interval 1
mui.val[1] = 10 - 11 inclusive, interval 1
mui.val[2] = -12 - 12 inclusive, interval 1
mui.val[3-9] = 0.0 - 9.9 inslcusive, interval 0.1
mui.epx[0-1] = 0
mui.exp[2-9] = 0-3 inclusive, inetrval 1
POSTED: This is a string transporting, float parsing, pseudo midi signal! The GUI is a clumsy, DOM based implementation with non-continunous values! And I traded multi-touch non working range sliders for single touch capable sliders that actually work... so it works on the ipad.
Future version will be nice tho: binary transport, real midi, canvas face, continuous value ranges.
The interface has 10 range sliders, and 8 corresponding exponents buttons.
var gui = require('dsp-interface');
gui.start(5001); // optional port, defaults to 8012
gui.val // a length 10 array
gui.exp // a length 10 array ([0] and [1] are always zero);
function(time){
return Math.sin( time * Math.PI * ( gui.val[3] * Math.pow(10, gui.exp[3]) ))
}
You can set your initial values
var mui = require('dsp-interface');
var values = [1, 1, -10, 1.1, 2.2, 3.3, 4.4, 5.5, 6.9, 8.2]; // there are 10 range sliders
var exponents = [0, 0, 1, 1, 2, 2, 3, 3, 3, 3]; // also ten, but only 8 lines have exponent switches. The first two indecies will always be zero!!!!!!
mui.start(5001, values, exponents)
the interface will start at those values
API
interface.val
val[0] and val[1] have range [0,11] inclusive to correspond with either cranking it past ten, or for 12 octaves for each of the 12 note classes in the western scale. Why 12 octaves? You can't hear 7 hertz, but you can feel it!
val[2]'s range is [-12, 12] inclusive (for semitones). It is the only line with negative values.
vals 3-9 have range [0, .9.9] at intervals of 0.1.
interface.exp
ui.exp channels 2-9 return values 0-3, meant to be used to define the exponent for the their corresponding channels values. exp[0] and exp[1] are always zero.
exp[0] and exp[1] are not used, and always zero
TODO:
- Add incr / decr buttons to range sliders
- Add on/off punch buttons
- Add placeholders for values you want to come back to