Algorithmic Composition: A Guide to Composing Music with by Roger B Dannenberg, Mary Simoni

By Roger B Dannenberg, Mary Simoni

Composers have used formalized approaches to create track all through heritage. With the appearance of the pc, algorithmic composition permits composers not just to create and scan with assorted formalisms, yet to listen to and overview effects fast. usually in algorithmic composition, the composer has just a obscure inspiration how the output will sound, yet as the enter is very automatic, the composer could make changes to exploit satisfied injuries, application insects, and different artistic assets of sound.

Algorithmic Composition: A advisor to Composing tune with Nyquist presents an outline of procedural ways to tune new release. It introduces programming suggestions via many examples written utilizing the Nyquist approach for tune composition and sound synthesis. Nyquist is freely on hand software program, and over a hundred software examples from this publication come in digital shape. Readers might be good outfitted to advance their very own algorithms for composition.

Music scholars who're studying approximately machine song and digital track will all have an interest during this cutting edge e-book, as generative track turns into a tremendous a part of the way forward for the self-discipline. scholars and students in laptop technological know-how also will locate a lot to curiosity them, in a simple and enjoyable way.

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Extra resources for Algorithmic Composition: A Guide to Composing Music with Nyquist

Example text

The function does not expect any inputs, indicated by the empty input list “()”. The function definition consists of a single command to return a list of the atoms c, e, and g. The return command causes an immediate exit from the containing function. After defining the function my-c-chord, we call 36 Chapter 3 ⋅ Introduction to SAL it with no inputs. The value returned by the function is the list {C E G}. 2, we define a function that transposes a given key-number by a given interval. The function name is transposemidi-note.

User-defined functions may be used just like the SAL primitives. The template to define a function is: define function function-name(optional-inputs) begin commands end Note: the word define is optional, but we use it throughout this book to remind the reader that this is a function definition. 1, we define a function named my-c-chord that creates a list of the pitches C, E, and G. 1: Defining a function SAL> define function my-c-chord() begin return {c e g} end Call the function. SAL> print my-c-chord() {C E G} The function name is my-c-chord.

0. Technically, the duration is really a 48 Chapter 4 ⋅ Programming and Nyquist time-scaling factor that “stretches” the normal duration of the note. Most notes have a nominal duration of 1, so the time-scaling factor, or stretch factor, becomes the duration, but it is possible for sound events to have any nominal duration. The third element of each line is the sound expression, which tells how to create a sound. Notice that the sound expression does not follow the SAL syntax for function calls because the expression must be represented within a list structure, not as a textual program.

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Algorithmic Composition: A Guide to Composing Music with by Roger B Dannenberg, Mary Simoni
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