Recitals of patterns Erik Carlson, violin

Upcoming performances

A tone: 25 beats sustain, 16 beats rest; repeated 200 times at tempo 144 bpm August 1, 2018. 7:00pm House concert, San Diego

A series of 20-second durations, each systematically subdivided into 5 shorter durations with simple integer ratios (1, 2, 3, 4, 5) (1, 2, 3, 4, 6) (1, 2, 3, 5, 6) (1, 2, 4, 5, 6) etc. (indicated by change of bow) August 5, 2018. 7:00pm House concert, San Diego

Each new bow is a new frequency corresponding to a the average pitch of a unique phrase of seagull calls as recorded over a day in La Jolla cove August 12, 2018. 7:00pm House concert, San Diego

A series of randomly chosen permutations of 8 randomly chosen pitches in the range D4 - C#5 (duplicate pitches permitted) A new set of pitches is chosen every 10 minutes August 16, 2018. 7:00pm House concert, San Diego

Past performances

Each minute, on the minute, (for 61 minutes), a tone Duration of the tone begins at one second and increases by one second each minute July 30, 2018. 7:00pm House concert, San Diego

The eight points of a cube, through various rotations mapped onto a pitch/time grid June 25. 7:00pm House concert, San Diego

Repeated shuffling of a deck of cards (starting with a new deck) Each suit mapped to a string, each card to a pitch July 23, 2018. 6:00pm House concert, San Diego

During each minute number M, a tone is sustained during seconds which are multiples of numbers 2 through M+1. The other seconds are rests June 22, 2018. 7:00pm House concert, San Diego

2-voice canon at the unison Notes in voice 1 played every beat with a duration of half a beat, pitch is D4 or E4 (randomly chosen) second voice enters after 9.5 beats June 19, 2018. 7:00pm House concert, San Diego

20000 beats 2 nearby frequencies (played on 2 strings) phase across each other 20,000 times (performed with the aid of a computer) July 15, 2018. 7:00pm House concert, San Diego

A drone (open string) played against a pitch that oscillates (maximum of +/- a minor second from the drone) The pitch of the oscillating note is an exact slowed-down replica of the waveform of the dyad being played (performed with the aid of a computer) June 12, 2018. 6:00pm House concert, San Diego

2-voice prolation canons that are also palindromes (each voice on a single pitch) June 10, 2018. 7:00pm House concert, San Diego

Just intervals corresponding to the time (hours and minutes) the performance lasts from 20:05 to 20:59 June 4, 2018. 8:00pm House concert, San Diego

2-voice canon at the 5th Voice 1 notes randomly chosen from pitches D4 - A4. Voice 2 follows after 3 notes pitches A4 - E4 Each dyad sustained for a full slow bow June 1, 2018. 4:00pm House concert, San Diego

A series of randomly-created pitch/duration palindrones of varying lengths May 28, 2018. 7:00pm House concert, San Diego

Transcriptions of a table tennis ball falling down various stairwells May 21, 2018. 6:00pm House concert, San Diego

2-voice canon at the major second (each voice a single pitch) Each beat, the line either sustains or rests (determined randomly). The 2nd voice enters after 10 beats May 15, 2018. 7:00pm House concert, San Diego

100 digits of pi in bases 2 through 100 using a simple digit to pitch mapping May 10, 2018. 7:00pm House concert, San Diego

2-voice canon at the major second (each voice a single pitch) The voices alternate. A new pitch begins every 10 seconds The duration of each pitch is randomly chosen from 1-20 beats at 120 bpm The canon has a 10-note delay May 8. 7:00pm House concert, San Diego

Oscillations of a point on the surface of the water at La Jolla Cove slowed down and mapped into pitch May 6, 2018. 8:00pm House concert, San Diego

2-voice duration canon at the major second (each voice a single pitch) Voices alternate each tone without overlap or gap Each note in the line has a randomly chosen duration 1-10 beats Identical durations in the imitating voice with a 10 note delay May 1, 2018. 7:00pm House concert, San Diego

One million vibrations 320 Hz sustained for 52'05" April 26, 2018. 5:00pm House concert, San Diego

Deriving various commas (greater/lesser diesis, pythagorean, syntonic, diaschisma, kleisma, schisma, ragisma, etc.) performed with cellist Judith Hamann April 8, 2018. 7:00pm Bread and Salt, San Diego

Durations of a repeated pitch taken from an r/counting "tug of war" thread. about April 3, 2018. 6:00pm House concert, San Diego

Ascending prime numbers in base 12 digits mapped to pitches March 28th, 2018. 7:00pm House concert, San Diego

Walking the Chartres labyrinth pitch mapped to circuit, string mapped to quadrant, duration mapped to constant walking pace March 21st, 2018. 6:00pm House concert, San Diego

3 alternating pitches sustained for durations of breathing stages (in, out, rest) as measured during an hour of my sleep. February 17, 2018. 6:00pm House concert, San Diego

2 alternating pitches sustained for durations of swash oscillations at a point in La Jolla Cove measured during an hour the day of the performance February 12, 2018. 7:00pm House concert, San Diego

Alternating tone and rest (from Series for any Solo Player) C#5 played for 20 beats at tempo 107 bpm and then rest for 7 beats at tempo 95 bpm. Repeat 162 times January 23, 2018. 7:00pm House concert, San Diego

Random pitches with various probability distributions (normal, beta, exponential, erlang, chi-squared, etc.) December 11th, 2017. 8:00pm House concert, San Diego

From the tradition of change ringing, the Avalon Delight Maximus method (applied to a chromatic scale) about November 27th, 2016. 6:00pm House concert, San Diego

Bridge hands played out, taken from the New York Times bridge column Each suit mapped to a string, each card to a pitch October 2nd, 2017. 7:00pm House concert, San Diego

Transcription of a dripping faucet September 9, 2017. 7:00pm 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) September 5, 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 14, 2017. 8:00pm 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.) August 1, 2017. 7:00pm House concert, San Diego

9th iteration Cantor Set as a rhythmic pattern on a single pitch July 13, 2017. 7:00pm House concert, San Diego

Different ways of dividing a 12-note octave into 6 unique intervals June 28, 2017. 7:30pm House concert, San Diego

Pitch collections based on the coefficients of the polynomials that have a root at -2 June 19, 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 June 4, 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 May 23, 2017. 7:30pm House concert, San Diego

Harness sequences from classic 12-shaft weaving patterns May 22, 2017. 7:00pm House concert, San Diego

Transcription of a fly trapped in a box May 3, 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) April 29, 2017. 7:00pm House concert, San Diego

A series of chess openings (with dyads indicating coordinates of moves) April 18, 2017. 7:30pm House concert, San Diego

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 April 14, 2017. 7:30pm 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

Towers of Hanoi The three stacks represented by three strings, pitch up from the open string represents stack height, duration represents disk size April 1, 2017. 7:30pm House concert, San Diego

Counting - by drawing the numerals on the surface of the string with the bowhair March 27, 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) March 20, 2017. 7:00pm House concert, San Diego

4087:6527:7169 polyrhythm (on 3 pitches) March 16, 2017. 7:00pm House concert, San Diego

Various molecules encoded in InChI, and translated into pitches using a simple mapping. March 1, 2016. 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 20, 2017. 7:00pm House concert, San Diego

A series of Knight's Tours through a simple pitch/duration grid February 19, 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 13, 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 3, 2016. 7:00pm House concert, San Diego

Spelling consecutive words from the dictionary using a simple letter-to-pitch mapping November 19, 2016. 7:00pm House concert, San Diego

Reverse and add process until palindrome on various numbers in base 12 November 1, 2016. 6:00pm 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 21, 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 15, 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 8, 2016. 7:00pm House concert, San Diego

A sustained tone that rises in pitch 1 Hz each bow change August 23, 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