Sébastien Roccaserra sroccaserra

Commandes

Avec -monochrome

$ convert source.png -monochrome destination.png
$ convert source.png -monochrome -remap pattern:gray50 destination.png
$ convert source.png -monochrome -resize 512x512 -remap pattern:gray50 destination.png
$ convert source.png -monochrome -remap pattern:gray50 -dither FloydSteinberg destination.png

Archive:

https://archive.org/details/AmigaSTXX_originals_plus_conversions

These are 8 bit samples often used with the first Amiga trackers of the late 80s and early 90s, like Ultimate Soundtracker. In original and updated formats.

Following the info found in [this other archive][other], I tried to accurately convert the original files to modern & self documenting formats (.wav or .aiff), so they can easily be used in modern DAWs or modern trackers, like

Note: here I use gxargs and ggrep instead of xargs and grep commands because my OS does not come with GNU xargs and GNU grep by default.

$ find . -type f -not -name '*.aiff' -not -name '*.8svx' -print0 | \
    gxargs -r0 ggrep -bZl '^FORM' | \
    gxargs -0n1 xxd -p -s32 -l2 | \
    sort | uniq -c

To display in vega lite for example.

Like in the Amiga Soundtracker samples:

Note: god is for macOs (brew install coreutils). Use plain od command for regular linux systems.

For example, on the Alien pcm file from the original Soundtracker sample pack:

	var w = 300
	var h = 200;
	var inc = 10;

	void draw() {
	background(0,0);


	translate(w+30,50);

	#!/usr/bin/env bash

	T() {
	npm t
	}

	C() {
	git commit -am green
	echo 'Commit :)'
	}

	"A Strange Journey" by Sébastien Roccaserra

	Release along with an interpreter.

	The player is carrying a piece of paper. The description of the piece of paper is "A handwritten note: 'Meet me at the Lagoon. Ask for John.'"

	Chapter 1 - The Graveyard

	The Graveyard Area is a region.


	run: hello
	./hello

	hello: hello.o
	ld -macosx_version_min 10.13.0 -lSystem -o hello hello.o

	hello.o: hello.asm
	nasm -f macho64 hello.asm -o hello.o

	import argparse

	"""

	Works only for raw 8 bit signed mono data.

	This script was writen as an easy way to convert original Amiga ST-XX raw
	samples to a more documented format that keeps the original data untouched.

	See also:

	#!/usr/bin/env python3

	input_file_name = '000.LFL'
	output_file_name = '000.LFL.XORed'
	key = bytearray(b'\xFF')

	def str_xor(data, key):
	for i in range(len(data)):
	data[i] ^= key[i % len(key)]
	return data