mreid

--- Phantasms
--- Used to create this piece: https://www.youtube.com/watch?v=-j5uSu7hiCo
--- Adapted from the `jf_strum.lua` strum sequencer for just friends, w/syn, and crow
--- https://llllllll.co/t/jf-strum/59169

s = sequins

a = s{0,3,8,5,10,15,s{19,24,31}}
b = s{1,2,3,-1}
c = s{0,3,8,s{3,5,0,5}}

mreid

---strum sequencer for just friends, w/syn, mangrove and crow
--- Adapted from script by WilliamHazard: https://llllllll.co/t/jf-strum/59169
--- Used in https://youtu.be/-j5uSu7hiCo?si=krmbytEQypPDsq5D
s = sequins

a = s{0,3,8,5,10,15,s{19,24,31}}
b = s{1,2,3,-1}
c = s{0,3,8,s{3,5,0,5}}
d = s{0,3,5,15,s{12,17,8,10}}

mreid

# Example implementation of simple arithmetic coding in Python (2.7+).
#
# USAGE 
# 
#  python -i arithmetic.py
#  >>> m = {'a': 1, 'b': 1, 'c': 1}
#  >>> model = dirichlet(m)
#  >>> encode(model, "aabbaacc")
#  '00011110011110010'
#

mreid

# Example Huffman coding implementation
# Distributions are represented as dictionaries of { 'symbol': probability }
# Codes are dictionaries too: { 'symbol': 'codeword' }

def huffman(p):
    '''Return a Huffman code for an ensemble with distribution p.'''
    assert(sum(p.values()) == 1.0) # Ensure probabilities sum to 1

    # Base case of only two symbols, assign 0 or 1 arbitrarily
    if(len(p) == 2):

mreid

Keybase proof

I hereby claim:

• I am mreid on github.
• I am mreid (https://keybase.io/mreid) on keybase.
• I have a public key whose fingerprint is 0290 8892 E023 A876 460B D320 2B84 F83F 283D 58D8

To claim this, I am signing this object:

mreid

101110000011111111001001101101001010101001110011010000110100010111100111000000010111110000110101011011100000110000000101101100000101111010001001111000000000111000000011

mreid

# A command-line noisy channel
# 
# USAGE: python channel.py BLOCK_SIZE FLIP_PROBABILITY
#
# EXAMPLE:
#    $ echo "0000000" | python channel.py 7 0.8
#    0000100
#
# AUTHOR: Mark Reid <[email protected]>
# CREATED: 2013-10-21

mreid

# Hamming (7,4) Coding
#
# Reads binary stream from standard input and outputs Hamming (7,4) encoded
# version to standard output.
#
# USAGE: python h74-encode.py
#
# EXAMPLE:
#      $ echo "0001" | python h74-encode.py
#      1000101

mreid

# LZ78 Encoding
#
# Performs LZ78 encoding on the standard input and writes result to standard output
# using algorithm described in MacKay textbook.
# 
# Note:
#  - All input symbols are encoded using 7-bit ASCII.
#  - Pointer index is encoded using logarithmically increasing number of bits
#
# USAGE: python lz78-encode.py

mreid

# LZ77 Encoding
#
# Simple implementation of Lempel-Ziv 77 (a.k.a. "Sliding Window") coding
# as described in Section 13.4 of Cover & Thomas' "Information Theory".
#
# USAGE: python encode.py INPUT_STREAM
#
# EXAMPLE (from lectures):
#    $ python encode.py abbababbababbab
#    (0,a)