TODO: モジュラーシンセ
VCO
https://kassu2000.blogspot.com/2015/12/vco-part-1-core.html
http://musicfromouterspace.com/analogsynth_new/NOISETOASTER/NOISETOASTER.php
https://www.youtube.com/@MoritzKlein0
https://www.ericasynths.lv/shop/diy-kits-1/edu-diy-vco/
https://www.ericasynths.lv/media/VCO_MANUAL_v2.pdf
https://sfcs.neocities.org/module/FOX01C/
http://www.sdiy.org/pinky/data/ota%20vco%20build%20guide.pdf
https://modwiggler.com/forum/viewtopic.php?t=185534
https://benjiaomodular.com/post/2021-12-03-volt-per-octave-40106-vco/
moritzklein0さんの動画と、ericasynthsが英語なんだけど説明が解りやすい
edu-diy-vcoが良いなと思ってたけど、synthfoxのFOX01Cが部品点数少なくてサーミスタ不要でめちゃめちゃよさそう。作例は同じ回路で3VCOになってるけど、三角波回路をericasynthsの矩形波回路に差し替えたものとか、FM抜いてsyncにするパターンとかも作れそうだなぁ
ヘンリートーマス555 VCO
https://electro-music.com/forum/viewtopic.php?t=54623
edu-diy-vcoに比べると部品が少し多いけどsyncがあるなぁ。パルスも適当に取り出せそう
プログラマブル波形生成器IC（SPI）
AD9833BRMZ https://akizukidenshi.com/download/ds/analog/AD9833_JP.pdf
https://note.com/solder_state/n/nd2c22a73e8fe
https://xn--p8jqu4215bemxd.com/archives/3752
前に買ったシグナルジェネレータがイマイチなのでこれ使うのありかなって…
VCO用アプリとシグナルジェネレータ用アプリ作れば流用も出来そう？…
のこぎり波を出すにはアナログ回路が必要かぁ…
https://electronics.stackexchange.com/questions/77665/sawtooth-ramp-waves-with-fixed-amplitude-from-sine-or-square-clock-source
VCF
https://youtu.be/ITJX9jP-zm4?si=NIi5UGyc3oZ6BdZj
https://tonylight-leploop.blogspot.com/2012/01/12-db-low-pass-lep-filter.html
https://www.leploop.org/2010/07/30/12-db-low-pass-filter/
https://tinyurl.com/29xtsqjd
DACのIC（SPI）
MCP4922-E/P
https://akizukidenshi.com/download/ds/microchip/MCP4921_2.pdf
http://zattouka.net/GarageHouse/micon/circuit/D_A.htm
https://note.com/solder_state/n/n17e028497eba
CVとかLFOとかVCO…なんでもできそう
DDS
https://www.mweblabo.com/jf1vrr-2011051100
https://www.digikey.jp/ja/articles/the-basics-of-direct-digital-synthesizers-ddss
VCO,VCF,VCAの各IC
AS3340 https://akizukidenshi.com/download/ds/alfarpar/AS3340.pdf
https://www.eddybergman.com/2019/11/synthesizer-build-part-2-vco.html
https://www.eddybergman.com/2020/01/synthesizer-build-part-18-really-good.html
↑これがよさそ
https://www.asahi-net.or.jp/~wz4k-tnk/MY/cem3340.html
https://electricdruid.net/cem3340-vco-voltage-controlled-oscillator-designs/
https://notchained.hatenablog.com/entry/2020/10/19/001147
https://www.lookmumnocomputer.com/cem-3340-diy-simple
チューニングがうまくいかなかった
V2044A https://akizukidenshi.com/download/ds/coolaudio/v2044a.pdf
https://note.com/solder_state/n/n0fabdc23fe1e
http://forum.anafrog.com/phpBB/viewtopic.php?t=8701
https://electricdruid.net/ssm2044-lp-filter-designs/
AS2164 https://akizukidenshi.com/download/ds/alfarpar/AS2164.pdf
https://www.amazingsynth.com/parts/ssi2164/SSI2164_Data_Sheet_Rev_3-0.pdf
https://www.soundsemiconductor.com/downloads/ssi2164datasheet.pdf
https://note.com/solder_state/n/n14a8be5f7118
https://note.com/solder_state/n/n3357199504d8
https://note.com/solder_state/n/nd82c027d0597
rev2(exp-lin可変付)
リニア可する回路
http://www.sdiy.org/philgallo/mgbvca.html
EG
https://www.youtube.com/watch?v=aGFb7JbTdNU
これよさそうなんだよね。
https://www.n8synth.co.uk/diy-eurorack/envelope-generator/
こっちのが簡単そう
https://www.schmitzbits.de/adsr.html
上のやつの解説？
https://hackabrute.yusynth.net/index_en.php?&arg=4
artulia microbruteとかにも使われてるらしい。ポットはログ指定。2.2Mは手元にないので100kか10kあたりで試そう
https://kassu2000.blogspot.com/2015/05/precision-adsr.html
https://gitlab.com/rsholmes/precadsr
555の解りやすい解説
https://bbradio.sakura.ne.jp/555_01/555_01.html
https://electro-music.com/forum/topic-61297.html
EG Looper
https://www.youtube.com/watch?app=desktop&v=L9vTz0vm6pc
コンプレッサー・エキスパンダーIC
V571D https://akizukidenshi.com/download/ds/coolaudio/v571.pdf
https://electricdruid.net/noise-reduction-with-companders/
興味本位で買ってみたレベル
ベリのneutronで使われてるぽい
アナログスイッチIC
ADG419BNZ https://akizukidenshi.com/download/ds/analog/ADG419_jp.pdf
いいお値段なので使用中止
パッシブLPG(Lowpass Gate)
https://lookmumnocomputer.discourse.group/t/passive-multiples-and-more/3053
https://www.modwiggler.com/forum/viewtopic.php?t=107006&postdays=0&postorder=asc&start=25&sid=a60588edd8dbbee83000d8a4a4ed2b50
パッシブVCA
https://modwiggler.com/forum/viewtopic.php?t=168810　
https://www.youtube.com/watch?v=QZIKUEhejMQ
VCA
https://www.davidhaillant.com/simple-vca/
https://www.analog-monster.de/simple_vca_en.html
https://benjiaomodular.com/post/2021-12-17-lm13700-vca/
https://www.vishay.com/docs/70598/70598.pdf
https://electro-music.com/forum/topic-63383.html
https://www.reddit.com/r/synthdiy/comments/lreytp/simple_vca_in_eurorack_format_on_stripboard/?tl=nl&rdt=49676
https://knopslmodular.design.blog/portable-modular/
http://www.sdiy.org/philgallo/mgbvca.html
パッシブ回路ほか
https://www.sequencer.de/synthesizer/threads/passive-schaltungen-fuer-modular.160071/
↓パッシブのEG回路↓　組んだけどちょっと物足りない。
https://www.sequencer.de/synthesizer/data/attachments/117/117590-4b8b2413d74d910e51c419c452086d4d.jpg
ノイズジェネレータ
https://synthnerd.wordpress.com/tag/eurorack-diy/
https://www.youtube.com/watch?v=0yB_h_wFkh4
FV-1
https://akizukidenshi.com/download/ds/akizuki/AE-FV-1-DIP.pdf
http://spinsemi.com/Products/datasheets/spn1001/FV-1.pdf
http://www.spinsemi.com/products.html
https://www.pedalpcb.com/product/arachnid/
https://github.com/HolyCityAudio/SpinCAD-Designer
https://mstratman.github.io/fv1-programs/
http://www.spinsemi.com/programs.php
RP2040でVCF
https://www.utsbox.com/?page_id=523
LFO
https://www.skullandcircuits.com/lfo-1/?v=d3dcf429c679
https://www.reddit.com/r/synthdiy/comments/19cddy8/finally_got_a_triangle_to_saw_converter_working/
noise
https://www.ericasynths.lv/media/SH_MANUAL_v1.pdf
https://synthnerd.wordpress.com/2020/03/27/synth-diy-a-white-noise-generator-part-2/
https://www.reddit.com/r/synthdiy/comments/18deh3j/noise_generator_circuit_help/
https://www.reddit.com/media?url=https%3A%2F%2Fpreview.redd.it%2Fnoise-generator-circuit-help-v0-7avk8t0dt45c1.jpeg%3Fwidth%3D1058%26format%3Dpjpg%26auto%3Dwebp%26s%3D5382db126feab86ccf761be72b8ea91d2d598c7f
ClockDivider
https://www.midcentury-modular.com/blog/cmos-clock-dividers
https://akuzechie.blogspot.com/2021/02/8-bit-binary-count-using-74hc590-counter.html
https://toshiba.semicon-storage.com/info/TC74HC590AP_datasheet_ja_20140301.pdf?did=16457&prodName=TC74HC590AP
pll
https://jhalfmoon.com/dbc/2023/04/04/定番回路のたしなみ21-cd4046でpllフェーズロックドルー/
分周
http://okgnz.web.fc2.com/ssexp/ssexp12.htm
ringmod
https://wiki.analog.com/university/courses/electronics/electronics_lab_diode_ring_modulator
https://mecha-norimaki.com/arduino_start_08/
https://youtube.com/shorts/Ev_1F35GWgs?si=kz3736cQyGO5FkGG