30 lines
1.1 KiB
Markdown
30 lines
1.1 KiB
Markdown
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---
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date: 2025-01-29 14:41
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---
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#computermusic
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[The MPEG-4 Structured Audio Book](https://john-lazzaro.github.io/sa/book/index.html)
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[[CSound]]を元にしたStructured Audio Orchestra Language
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MIDIのように音色をシンセサイザーのアルゴリズムをインターネット越しに送るようなことを想定
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Score LanguageであるSASLとOrchestra LanguageであるSAOLの2言語で構成
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[Saol: The MPEG-4 Structured Audio Orchestra Language](https://quod.lib.umich.edu/cgi/p/pod/dod-idx/saol-the-mpeg-4-structured-audio-orchestra-language.pdf?c=icmc;idno=bbp2372.1998.488;format=pdf)
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[SAOL: The MPEG-4 Structured Audio Orchestra Language on JSTOR](https://www.jstor.org/stable/3680734)
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シンタックスはCSoundよりもC言語よりになっている
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```
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instr beep(pitch,amp) { // make a beep
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table wave(harm,2048,1); // sinusoidal wave function
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asig sound; // ‘asig’ denotes audio signal
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ksig env; // ‘ksig’ denotes control signal
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env = kline(0,0.1,1,dur-0.1,0); // make envelope
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sound = oscil(wave, pitch) * amp * env; // create sound by enveloping an oscillator
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output(sound); // play that sound }
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```
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