SPEKTRA
stereo audio | 4′24″ | © 2017 Akos Janca
- description | etude for graphical additive sound synthesis
- realization | drawn microtonal stereo spectrogram
- summary | The piece is based on a 65.4 Hz frequency pure sinewave (the great C note). Its additional harmonics are created artificially, resulting changes in composition of spectrum, rhythm and volume.
- premiere | 7 June 2017, Liszt Academy, Budapest, HU
![Stacks Image 46](index_files/stacks-image-e52006a.png)
SPEKTRA, excerpt • pulsation and noise that builds up and then fades into one
![Stacks Image 66](index_files/stacks-image-c9db6a0-1200x610.png)
SPEKTRA, excerpt • offset, tinkling overtone-garlands
![Stacks Image 70](index_files/stacks-image-182ba0c-1200x610.png)
SPEKTRA, excerpt • a close up of two small sinusoidal components, approx. 8 cents apart and shifted in time, approx. with 60 ms attack
![Stacks Image 74](index_files/stacks-image-b8908e1-1200x610.png)
SPEKTRA, excerpt • contrast of comb-like complementary spectrum components: one continuous, the other intermittent, accelerating-decelerating
![Stacks Image 78](index_files/stacks-image-ed5bd02-1200x610.png)
SPEKTRA, excerpt • rhythmic contrast: accelerating and decelerating pulsating components close together
![Stacks Image 82](index_files/stacks-image-0953e6c-1200x610.png)
SPEKTRA, excerpt • nice tinkling sound: components out of time, then synchronizing, coming together into one sound
![Stacks Image 86](index_files/stacks-image-df01ca1-1200x610.png)
SPEKTRA, excerpt • inverse timbre-melody (v-shaped sweep, notch filtering), which eventually blends into the harmonic spectrum
![Stacks Image 90](index_files/stacks-image-fb7555b-1200x610.png)
SPEKTRA, excerpt • recurring v-shaped principles: in time, amplitude etc.
![Stacks Image 94](index_files/stacks-image-551b27d-1200x610.png)
SPEKTRA, excerpt • moving the timbre by changing the amplitude of the spectrum components (and also dashing)
![Stacks Image 98](index_files/stacks-image-4f9763b-1200x608.png)
SPEKTRA, excerpt • time-synchronizing components approx. a semitone apart (at the line) and then shifting them again
![Stacks Image 102](index_files/stacks-image-23465aa-1200x608.png)
© 2020–24 Akos Janca. All rights reserved.