Recitals of patterns
Erik Carlson, violin


Upcoming performances


9th iteration Cantor Set as a rhythmic pattern on a single pitch

July 13th, 2017. 7:00pm
House concert, San Diego


Segments of various continuous mathematical functions mapped onto an octave (as a glissando)
(each function begins at (0, 0) and ends at (1, 12), played over the course of 1 minute)

July 14th, 2017. 7:00pm
House concert, San Diego


A series of chess openings (with dyads indicating coordinates of moves)

August 2nd, 2017. 7:30pm
House concert, San Diego


An oscillating pitch that is an exact slowed-down replica of the waveform of the note being played
(performed with the aid of a computer)

August 3rd, 2017. 7:00pm
House concert, San Diego


A series of notes in which the pitch of the Nth note is deterimed by the number of factors of N.
Prime numbers are rests.

August 14th, 2017. 8:00pm
House concert, San Diego


Transcription of a dripping faucet

September 2nd, 2017. 7:00pm
House concert, San Diego


Various sorting algorithms used to sort randomized pitches into a chromatic scale
(merge, insterstion, quick, bubble, heap, counting, shell, comb, buecket, radix, etc.)

September 5th, 2017. 7:00pm
House concert, San Diego


Twenty 500-beat phrases in which the duration between tones is based on random entries from the Online Encyclopedia of Integer Sequences
(the source of the sequence is projected for the audience to see)
about
September 23rd, 2017. 7:30pm
House concert, San Diego


Harness sequences from classic 12-shaft weaving patterns

October 4th, 2017. 7:00pm
House concert, San Diego


Transcription of a fly trapped in a box

October 7th, 2017. 7:00pm
House concert, San Diego


Past performances


Melodies based on various texts. One tone per word.
The pitch of each tone is determined by how many times the corresponding word has been used so far in the text

June 21, 2017. 7:30pm
House concert, San Diego


Different ways of dividing a 12-note octave into 6 unique intervals

June 19, 2017. 7:30pm
House concert, San Diego


Pitch collections based on the coefficients of the polynomials that have a root at -2

June 8, 2017. 7:00pm
House concert, San Diego


A softly sustained tone, amplified by the volume envelopes from a live feed of the waves at La Jolla Cove

May 23rd, 2017. 7:00pm
House concert, San Diego


Towers of Hanoi
The three stacks represented by three strings, pitch up from the open string represents stack height, duration represents disk size

May 16th, 2017. 7:30pm
House concert, San Diego


Counting - by drawing the numerals on the surface of the string with the bowhair

May 5, 2017. 7:30pm
House concert, San Diego


Sonification of long division
(on 2 strings: one for the answer, one for the remainder as they develop)

April 20th, 2017. 7:00pm
House concert, San Diego


A series of 48-note all-interval rows

April 11, 2017. 6:30pm
La Jolla Public Library, San Diego


10000 repetitions of a single pitch

April 6, 2017. 7:00pm
Bread and Salt, San Diego


4087:6527:7169 polyrhythm
(on 3 pitches)

March 16th, 2017. 7:00pm
House concert, San Diego


Measuring time: a system that divides the day into units in base 12
Each violin string maps the units at different orders of magnitude
4-note chords tell the time. (4 open strings at midnight)
Corresponding time-chords are played at various moments throughout the performance

February 20th, 2017. 7:00pm
House concert, San Diego


A series of Knight's Tours through a simple pitch/duration grid

February 10th, 2017. 8:00pm
House concert, San Diego


One dimensional cellular automata - Rule 110
in 2 parts:
-applied to a scale of pitches
-applied to a rhythmic pattern
about

January 17, 2017. 7:00pm
House concert, San Diego


The square root of 2 expressed in binary (1 = pizz open G string, 0 = no pizz)

December 13th, 2016. 8:00pm
House concert, San Diego


Sets of 200 pitches generated by various methods of randomness and pseudo-randomness
(dice, atmospheric noise, mersenne twister, card shuffle, coin flip, xorshift, roulette wheel, lava lamp, middle square, etc.)

December 3rd, 2016. 7:00pm
House concert, San Diego


Spelling consecutive words from the dictionary using a simple letter-to-pitch mapping

November 19th, 2016. 7:00pm
House concert, San Diego


Logistic map
The frequency of the pitch on each bow (f) is based on the frequency of the previous pitch (F):
f = {[(F - 330) / 330] * (1 - [(F - 330) / 330]) * (pi + 0.8)} * 330 + 330

October 21st, 2016. 8:00pm
House concert, San Diego


Most common frequency (in the violin range) detected each day from a microphone outside my house
Monitored for one year
One bow = one day

September 15th, 2016. 8:00pm
House concert, San Diego


A catalogue of notated ornaments from instrumental music of the last 500 years, arranged by contour and interval content

September 1st, 2016. 7:00pm
House concert, San Diego


A sustained tone that rises in pitch 1 Hz each bow change

August 23rd, 2016. 7:00pm
House concert, San Diego


Random pitches and durations (played softly)
(derived from random.org's atmospheric noise algorithm)
about

August 3, 2016. 7:00pm
Low Gallery, San Diego


A sonification of the first 4000 prime numbers mapped onto a chromatic scale
(P mod 13)
about

July 22, 2016. 7:00pm
The silo at Bread and Salt, San Diego


Selections from Gaylord Yost's "Exercises for the Change of Position"
about

July 20, 2016. 7:00pm
The silo at Bread and Salt, San Diego


From the tradition of change ringing, the Palatino Surprise Maximus method (applied to a chromatic scale)
about

July 18, 2016. 7:00pm
The silo at Bread and Salt, San Diego