/technologies/fpga-group/b/blog/posts/a-subtractive-music-synth-fully-implemented-in-fpgaFrom: https://thetinysynth.wordpress.com/ The Tiny Synth, with its synthesis core measuring only 1.5&#215;1.5mm, is probably the smallest subtractive synthesizer out there. Based on the Artix7 device from the latest Xilinx FPGA family, it provides a totalen-USTelligent Community 12https://community.element14.com/technologies/fpga-group/b/blog/posts/a-subtractive-music-synth-fully-implemented-in-fpgaSat, 25 May 2019 16:05:56 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:f43e9dfa-979a-4b5e-ba2e-e88cee90fbfaalisterw1<p>Great! Neat project.</p><p>I believe &#39;<span style="float:none;font-style:normal;font-weight:400;text-align:left;text-decoration:none;text-indent:0px;">The NCA </span><span style="font-style:italic;font-weight:400;text-align:left;text-indent:0px;">(Numeric Controlled Oscillator)&#39; should be a Numerically Controlled Amplifier.</span></p><p><span style="font-style:italic;font-weight:400;text-align:left;text-indent:0px;">So it gives an envelope to the output amplitude. I have some old AY-3-8910s in a drawer and these do something similar.</span></p><p>A comment online is that even though these chips are no longer made, an unofficial VHDL description is available for FPGAs.</p><p><span style="font-style:italic;font-weight:400;text-align:left;text-indent:0px;">( Please excuse cut and paste changing the type size!)</span></p><p>&nbsp;</p><img src="https://community.element14.com/aggbug?PostID=7076&AppID=19&AppType=Weblog&ContentType=0" width="1" height="1">https://community.element14.com/technologies/fpga-group/b/blog/posts/a-subtractive-music-synth-fully-implemented-in-fpgaThu, 16 May 2019 11:37:33 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:f43e9dfa-979a-4b5e-ba2e-e88cee90fbfajc20481<p>Nice project. Why do you call it &#39;additive&#39; in the title when your text describes it as subtractive?</p><img src="https://community.element14.com/aggbug?PostID=7076&AppID=19&AppType=Weblog&ContentType=0" width="1" height="1">