Wiki

Below is the source of this page. To edit this source as well as other pages on the wiki, you must login.
====== MIDI Sawtooth Synth on Core 1 ======

This third example is a MIDI controlled sawtooth synth on Core 1.

===== The Faust Code for the MIDI Controlled Sawtooth Synth =====

Here is the Faust code for the MIDI controlled sawtooth synth. Notice the use of the metadata elements:

  * ''freq'' – If a MIDI noteOn event is received it’s MIDI keyNumber is mapped to a frequency.
  * ''bend'' – if a MIDI pitchBend message is received it is mapped to a bend value.
  * ''gain'' – if a MIDI noteOn message is received it’s velocity value is mapped to a gain value which ranges from [0 .. 1.0]
  * ''gate'' – if MIDI noteOn/noteOff messages are received they are mapped to a gate value (0/1)
  * ''[midi:ctrl 1]'' – A Faust control (slider, etc) can be mapped to listen to a MIDI continuous controller.

<code c>
import("stdfaust.lib");


normMIDI(mv)  = mv/127.0; 
vol  = normMIDI(hslider("Ctrl Value IN (Ctrl 1) [midi:ctrl 1]", 60, 0, 127, 1)) ;


f = nentry("freq",200,40,2000,0.01);
bend = nentry("bend",1,0,10,0.01) : si.polySmooth(t,0.999,1);
g = nentry("gain",1,0,1,0.01);
t = button("gate");
freq = f*bend;
envelope = t*g*vol : si.smoo;

process = os.sawtooth(freq)*envelope <: _,_;
</code>

===== Building a Test GUI for the MIDI Controlled Sawtooth Synth =====
{{:resources:tools-software:sharc-audio-module:faust:sawtooth1.gif?nolink&600|}}
  * Open the Faust [[https://faust.grame.fr/editor|online editor]].
  * Name the *.dsp file sawtooth_synth.dsp.
  * Copy the algorithm into the online editor.
  * Compile and run the Faust program using the {{:resources:tools-software:sharc-audio-module:faust:play_button.png?nolink&50|}} button


===== Looking at the Block Diagram for the MIDI Controlled Sawtooth =====

The block diagram button {{:resources:tools-software:sharc-audio-module:faust:diagram_button.png?nolink&50|}} can be used to generate a hierarchical block diagram for an algorithm. This block diagram is hierarchical. Here are a few of the hierarchical levels:

{{:resources:tools-software:sharc-audio-module:/faust15.png?576x220}}{{:resources:tools-software:sharc-audio-module:/faust16.png?574x273}}

===== Creating Files for use with the Baremetal Framework =====
{{:resources:tools-software:sharc-audio-module:faust:sawtooth2.gif?nolink&600|}}
  * Click the ''Export/compile to a specific platform'' button {{:resources:tools-software:sharc-audio-module:faust:export_button.png?nolink&50|}}
  * In the first dropdown box, choose ''sam''
  * In the second dropdown box, choose ''sam-source-poly-4'' and then ''Export''
<note>**faust2sam** will generate the following three %%C++%% source files, which is the algorithm.
    * ''fast_pow2.h''
    * ''samFaustDSP.cpp''
    * ''samFaustDSP.h''
</note>
  * Click on the QR code that shows to download the files
  * These 3 source files can be copied to the Faust directory in the CCES framework. The framework can then be compiled and downloaded to the SHARC Audio Module.
  * See [[resources:tools-software:sharc-audio-module:faust#faust_with_the_cces_bare_metal_framework|Faust with the CCES Bare Metal Framework]] for more information

----
{{navigation SHARC Audio Module#ex-work-reverb|MIDI Controlled Reverb#.|Faust and the SHARC Audio Module#ex-work-virtual-analog|MIDI Virtual Analog Synth}}
Analog Devices Wiki

Page Tools
