Christopher Arndt SpotlightKid
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| # FFT Stockham | |
| # http://wwwa.pikara.ne.jp/okojisan/otfft-en/optimization1.html | |
| # original source of scalar Nim version by "Amb" : | |
| # https://gist.github.com/amb/4f70bcbea897024452d683b40d18be1f | |
| # Timings | |
| # === Scalar float64 === | |
| # FFT/IFFT test on 4096 points |
ingoogni
/ goertzelfiltergeneral.nim
Created
May 24, 2025 12:11
Goertzel generalized filter & filter bank
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| import strutils | |
| import math | |
| import complex | |
| const | |
| SampleRate = 8000.0 # 8kHz | |
| TargetFrequency = 941.0 # 941 Hz | |
| FFTSize = 205 | |
| N = FFTSize # Block size |
jean-emmanuel
/ midi_cc_generator.lua
Last active
October 21, 2024 20:51
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| moved to https://github.com/jean-emmanuel/lua_scripts/ |
SpotlightKid
/ pmstring.dsp
Created
August 6, 2024 11:26
A simple physical model of a guitar-like plucked string implemented in FAUST (Work in progress!)
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| declare name "PM String"; | |
| declare version "0.1"; | |
| declare author "Christopher Arndt"; | |
| declare license "MIT License"; | |
| declare description "A simple physical model of a guitar-like plucked string"; | |
| // Create a JACK/Qt app with: | |
| // | |
| // faust2jaqt -nvoices 6 -midi pmstring.dsp |
SpotlightKid
/ fbnfm_drumvoice.dsp
Last active
November 19, 2024 13:42
A FAUST-based drum and percussion synth with three components: band-limited noise through a feedback delay, noise and FM
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| // NOTE: as-is, this does NOT work correctly with faust2lv2, since it does not support MIDI input via the "key" parameter. | |
| // It does work with the FAUST web IDE and Faust Live, though. | |
| declare name "FB / Noise / FM Drum Voice"; | |
| declare version "0.1"; | |
| declare author "Christopher Arndt"; | |
| declare license "MIT License"; | |
| declare description "A drum and percussion synth with three components: band-limited noise through a feedback delay, noise and FM"; | |
ingoogni
/ avxgoertzeloscbank.nim
Last active
May 22, 2025 15:03
Goertzel, Rotating Vector vs. sin() Compare sine wave oscillators for speed and accuracy.
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| # Goertzel oscillator bank (scalar): | |
| # (seconds: 208, nanosecond: 253406100) | |
| # duration: 4440s samplerate: 44100 samples: 195804000 | |
| # 0.0000010635809590202449 seconds per sample @ 1000 oscillators | |
| # Goertzel AVX oscillator bank: | |
| # (seconds: 26, nanosecond: 403254200) | |
| # duration: 4440s samplerate: 44100 samples: 195804000 | |
| # 0.00000013484532593818306 seconds per sample @ 1000 oscillators | |
| # Speedup: 7.887414351371886x |
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| # OTFFT library | |
| # http://wwwa.pikara.ne.jp/okojisan/otfft-en/optimization1.html | |
| # This is +20-50% improvement | |
| const thetaLutSize = 2048 | |
| const thetaLut = static: | |
| var arr: array[thetaLutSize, Complex[float]] | |
| let step = 2.0*PI/float(thetaLutSize) | |
| for k, v in mpairs(arr): | |
| v = complex(cos(step * float(k)), -sin(step * float(k))) |
geraintluff
/ unit-range-reciprocal.hpp
Last active
January 8, 2025 20:39
A map from [0-1] to an arbitrary range, specified using low/mid/high values. Pulled out from some Signalsmith Audio internal code.
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| class UnitRangeMapReciprocal { | |
| double vMin, vTopFactor, vBottomFactor; | |
| public: | |
| UnitRangeMapReciprocal() : UnitRangeMapReciprocal(0, 0.5, 1) {} | |
| UnitRangeMapReciprocal(double min, double mid, double max) { | |
| vMin = min; | |
| double k = (mid - min)/(max - mid); | |
| vTopFactor = max*k - min; | |
| vBottomFactor = k - 1; | |
| } |
Michal-Szczepaniak
/ client.nim
Created
October 20, 2021 18:17
Nim async UDP server discovery and TCP server connection
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| import asyncnet, asyncdispatch, nativesockets | |
| proc discover(): Future[string] {.async.} = | |
| let socket = newAsyncSocket(AF_INET, SOCK_DGRAM, IPPROTO_UDP) | |
| socket.setSockOpt(OptReuseAddr, true) | |
| socket.setSockOpt(OptReusePort, true) | |
| socket.setSockOpt(OptBroadcast, true) | |
| await socket.sendTo("255.255.255.255", Port(12346), $0b10) | |
| var data = await socket.recvFrom(15) |
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| <?xml version="1.0" encoding="utf-8"?> | |
| <xsl:stylesheet version="3.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:itunes="http://www.itunes.com/dtds/podcast-1.0.dtd"> | |
| <xsl:output method="html" version="1.0" encoding="UTF-8" indent="yes"/> | |
| <xsl:template match="/"> | |
| <html xmlns="http://www.w3.org/1999/xhtml" lang="en" dir="ltr"> | |
| <head> | |
| <title><xsl:value-of select="/rss/channel/title"/> RSS Feed</title> | |
| <meta charset="UTF-8" /> | |
| <meta http-equiv="x-ua-compatible" content="IE=edge,chrome=1" /> | |
| <meta http-equiv="content-language" content="en_US" /> |
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