我刚刚开始使用Overtone，但我想从一开始就保持一定的组织。
的 project.clj: 的
(defproject overtone-sketchbook "0.1.0-SNAPSHOT"
:dependencies [[org.clojure/clojure "1.5.1"]
[overtone "0.9.1"]])
的 src/overtone_sketchbook/synths.clj: 的
(ns overtone-sketchbook.synths
(:use [overtone.live]))
(definst pluck-saw [f 800 d 3]
(* (saw (+ 100 (* 200 (saw d))))
(pluck (* (white-noise)
(env-gen (perc 0.001 2) :action FREE))
1 3 (/ 1 f))))
> lein repl
nREPL server started on port 52425
REPL-y 0.2.0
Clojure 1.5.1
Docs: (doc function-name-here)
(find-doc "part-of-name-here")
Source: (source function-name-here)
Javadoc: (javadoc java-object-or-class-here)
Exit: Control+D or (exit) or (quit)
user=> (use 'overtone.live)
--> Loading Overtone...
**********************************************************
WARNING: JVM argument TieredStopAtLevel=1 is active, and may
lead to reduced performance. This happens to currently be the
default lein setting:
https://github.com/technomancy/leiningen/pull/1230
If you didn't intend this JVM arg to be specified, you can turn
it off in your project.clj file or your global
~/.lein/profiles.clj file by adding the key-val
:jvm-opts ^:replace []
**********************************************************
--> Booting internal SuperCollider server...
Found 0 LADSPA plugins
*** ERROR: open directory failed '/Users/ilya/Library/Application Support/SuperCollider/synthdefs'
Number of Devices: 2
0 : "Built-in Input"
1 : "Built-in Output"
"Built-in Input" Input Device
Streams: 1
0 channels 2
"Built-in Output" Output Device
Streams: 1
0 channels 2
SC_AudioDriver: sample rate = 44100.000000, driver's block size = 512
--> Connecting to internal SuperCollider server...
--> Connection established
_____ __
/ __ /_ _____ _____/ /_____ ____ ___
/ / / / | / / _ \/ ___/ __/ __ \/ __ \/ _ \
/ /_/ /| |/ / __/ / / /_/ /_/ / / / / __/
\____/ |___/\___/_/ \__/\____/_/ /_/\___/
Collaborative Programmable Music. v0.9.1
Hey Ilya, I feel something magical is only just beyond the horizon...
nil
user=> (demo overtone-sketchbook.synths/pluck-saw)
IllegalArgumentException Don't know how to create ISeq from: clojure.lang.Symbol clojure.lang.RT.seqFrom (RT.java:505)
user=> (use 'overtone-sketchbook.synths)
nil
user=> (demo overtone-sketchbook.synths/pluck-saw)
IllegalArgumentException Don't know how to create ISeq from: clojure.lang.Symbol clojure.lang.RT.seqFrom (RT.java:505)
user=> (demo pluck-saw)
IllegalArgumentException Don't know how to create ISeq from: clojure.lang.Symbol clojure.lang.RT.seqFrom (RT.java:505)
user=> (require 'overtone-sketchbook.synths)
nil
user=> (demo pluck-saw)
IllegalArgumentException Don't know how to create ISeq from: clojure.lang.Symbol clojure.lang.RT.seqFrom (RT.java:505)
user=> (demo overtone-sketchbook.synths/pluck-saw)
IllegalArgumentException Don't know how to create ISeq from: clojure.lang.Symbol clojure.lang.RT.seqFrom (RT.java:505)
user=> Bye for now!
> lein repl
nREPL server started on port 52100
REPL-y 0.2.0
Clojure 1.5.1
Docs: (doc function-name-here)
(find-doc "part-of-name-here")
Source: (source function-name-here)
Javadoc: (javadoc java-object-or-class-here)
Exit: Control+D or (exit) or (quit)
user=> (use 'overtone-sketchbook.synths)
--> Loading Overtone...
**********************************************************
WARNING: JVM argument TieredStopAtLevel=1 is active, and may
lead to reduced performance. This happens to currently be the
default lein setting:
https://github.com/technomancy/leiningen/pull/1230
If you didn't intend this JVM arg to be specified, you can turn
it off in your project.clj file or your global
~/.lein/profiles.clj file by adding the key-val
:jvm-opts ^:replace []
**********************************************************
--> Booting internal SuperCollider server...
Found 0 LADSPA plugins
*** ERROR: open directory failed '/Users/ilya/Library/Application Support/SuperCollider/synthdefs'
Number of Devices: 2
0 : "Built-in Input"
1 : "Built-in Output"
"Built-in Input" Input Device
Streams: 1
0 channels 2
"Built-in Output" Output Device
Streams: 1
0 channels 2
SC_AudioDriver: sample rate = 44100.000000, driver's block size = 512
--> Connecting to internal SuperCollider server...
--> Connection established
_____ __
/ __ /_ _____ _____/ /_____ ____ ___
/ / / / | / / _ \/ ___/ __/ __ \/ __ \/ _ \
/ /_/ /| |/ / __/ / / /_/ /_/ / / / / __/
\____/ |___/\___/_/ \__/\____/_/ /_/\___/
Collaborative Programmable Music. v0.9.1
Hello Ilya, may algorithmic beauty pour forth from your fingertips today.
nil
user=> pluck-saw
#overtone.studio.inst.Inst{:name "pluck-saw", :params ({:value #<Atom@24fc9cde: 800.0>, :name "f", :default 800.0, :rate :kr} {:value #<Atom@449ec5ca: 3.0>, :name "d", :default 3.0, :rate :kr}), :args ("f" "d"), :sdef {:name "overtone-sketchboo96d/pluck-saw", :constants [0.0 0 2.0 3.0 0.5 1.0 50.0 100.0 200.0 1 2 -99 -4 5 0.001], :params (800.0 3.0), :pnames ({:name "f", :index 0} {:name "d", :index 1}), :ugens ({:n-inputs 0, :args nil, :outputs ({:rate 1} {:rate 1}), :name "Control", :rate 1, :n-outputs 2, :rate-name :kr, :inputs (), :special 0, :id 280} #<sc-ugen: saw:ar [1]> #<sc-ugen: binary-op-u-gen:ar [2]> #<sc-ugen: binary-op-u-gen:ar [3]> #<sc-ugen: saw:ar [4]> #<sc-ugen: white-noise:ar [0]> #<sc-ugen: env-gen:kr [0]> #<sc-ugen: binary-op-u-gen:ar [2]> #<sc-ugen: binary-op-u-gen:kr [1]> #<sc-ugen: pluck:ar [5]> #<sc-ugen: binary-op-u-gen:ar [11]> #<sc-ugen: out:ar [12]>)}, :group #<synth-group[live]: Inst pluck-saw Container 31>, :instance-group #<synth-group[live]: Inst pluck-saw 32>, :fx-group #<synth-group[live]: Inst pluck-saw FX 33>, :mixer #<synth-node[live]: overtone.stu547/mono-inst-mixer 34>, :bus #<audio-bus: No Name, mono, id 50>, :fx-chain [], :volume #<Atom@6e9cebcc: 1.0>, :pan #<Atom@3cd6d0: 0.0>, :n-chans 1}
user=> (demo pluck-saw)
CompilerException java.lang.RuntimeException: Unable to resolve symbol: demo in this context, compiling:(NO_SOURCE_PATH:1:1)
user=> (overtone.live/demo pluck-saw)
IllegalArgumentException Don't know how to create ISeq from: clojure.lang.Symbol clojure.lang.RT.seqFrom (RT.java:505)
user=> Bye for now!
我错过了一些非常基本的东西吗？
答案 0 :(得分：10)
首先，如果你能使你的问题更加简单和简洁，那么它将会非常有用，因此很容易找到可能的解决方案。
另外，感谢Overtone的尝试 - 对不起，事情并不是很明确。这里有一个很多，所以期待在你的路上问几个问题： - ）
然而，看看你的两个REPL摘录，很明显你还没有完全理解三件事：
让我简单地讨论其中的每一个，并希望他们能够了解正在发生的事情。
首先，Overtone使用Clojure的命名空间。当您use overtone.live Overtone所做的是将所有Overtone的公共API函数导入当前命名空间。这意味着，一旦完成此操作，您就可以使用所有公共API - 即demo，defsynth，sin-osc等。
在你的第二个REPL示例中，你要做的第一件事是：(demo overtone-sketchbook.synths/pluck-saw)这不起作用，因为Clojure还不知道demo是什么，并且对你的命名空间没有任何想法{ {1}}。要了解这些，您需要overtone-sketchbook.synth或use命名空间。有关更多信息，请阅读有关Clojure的require宏。
其次，Overtone的合成器是通过调用代表合成器部分的函数（称为ugens）来设计的。 ugens的例子是ns，saw，sin-osc。您可以在Overtone备忘单中看到完整的可用u列表：https://github.com/overtone/overtone/raw/master/docs/cheatsheet/overtone-cheat-sheet.pdf
lpf是一个允许你传入（部分）合成器并播放它的宏：
demo (demo (sin-osc)) 请注意，ugens是函数，以便您可以传递参数来修改它们的行为（例如440 {hz param to (demo (sin-osc 440)) ugen）。
同样重要的是要注意，ugens（目前）不能与synths一样对待。 ugen是合成子的组成部分，合成子是ugens树。这引出了我的第三个问题 - 你试图sin-osc demo合成器。这是一个已经设计过并且可能只被触发的合成器。要触发合成器，只需将其称为函数：
pluck-saw
你也可以将params（如果设计允许的话）传递给synth触发器函数。
总结一下：
(pluck-saw)宏加载外部命名空间，并引入函数使它们可用。对于Overtone的默认API，您需要引入ns或overtone.live（如果尚未引导服务器，则首先引导服务器。）overtone.core和demo所理解的数据结构。您可以将参数传递给ugen函数以指定它们的行为。最后，请加入我们的邮件列表 - 我们很高兴看到您正在与Overtone一起做（并计划做），并与您分享我们的热情：
答案 1 :(得分：1)
尝试：(demo 'overtone-sketchbook.synths/pluck-saw)
我仍然会遇到我不明白的代码错误，但这会让你更远。