![]() ![]() If you specify a duration for recordNRT, Score will automatically append a dummy command at the end of the score, with the given timestamp, ensuring that the output file will be at least this long. NOTE: NRT processing continues until the last timestamp in the score file. ![]() Of these, outputFilePath, options and duration are particularly important. action A function to evaluate when rendering is complete. duration The desired total length of the output file, in seconds. In particular, this is important to set the desired number of output channels, e.g. sampleFormat See SoundFile: -sampleFormat. headerFormat See SoundFile: -headerFormat. If you provide an existing audio file, its contents will stream to the NRT server's hardware input buses. outputFilePath The output audio file that you want (full path). Score will generate a temporary filename for you. ) oscFilePath Recommended to omit (leave as nil). Here is a rough template, followed by an explanation of the recordNRT parameters. To render the Score, use the Score: -recordNRT method. Allow the NRT server to read it from the disk file. Do NOT put a \d_recv message for \veryLarge here! If a SynthDef exceeds this limit, creation of the Score object will fail with the error message ERROR: makeSynthMsgWithTags: buffer overflow. The SuperCollider language client limits the size of a single OSC message to 65516 bytes. Very large SynthDefs will need to be written to disk and not rendered as OSC messages in the Score. Add SynthDefs into the Score as follows: ] If you save the result of Synth.basicNew(.) in a variable, then you can free it later using either Node: -freeMsg or Node: -releaseMsg, e.g.: )],įor SynthDef, there is no addMsg or recvMsg method. The subarray should be explicit only when writing the message by hand.)Ĭonsult help files for the server abstraction classes for additional ".Msg" methods. So it is sufficient for each Score item to be an array containing the time and method call. (The result of, e.g., newMsg is already the array representing the message. If you have only used realtime synthesis, this code style is unfamiliar, but it's worth practicing. To build a NRT score, create the object as a placeholder (no immediate communication) and then ask a placeholder for the message: Synth: *basicNew and Synth: -newMsg, or Buffer: *new and Buffer: -allocMsg or Buffer: -allocReadMsg. NOTE: Normal usage of Synth or Buffer communicates immediately with the server: Synth.new(.) transmits /s_new Buffer.alloc(server. OutputFilePath: "~/nrt-help.wav".standardizePath,Ī new Score object needs a list of commands, with times.Įach command is an array, e.g.Įach command is bound to a time by placing it in another array, with the time (a floating point number, in beats) first: ] can optionally play the Score, or portions of it, in real time for testing.prepares the binary OSC file for you, in the correct format.It is recommended to use a Score object to run NRT processes. For instance, if your code makes decisions about upcoming events based on data received from SendReply, Bus: -get ( /c_get) or Buffer: -get ( /b_get), or node notification messages, these data will not be available in NRT mode. When not to use NRT mode: If you need to interact with the server process at specific times, NRT is not appropriate. When to use NRT mode: If the audio processing can be arranged fully in advance, and you need "faster-than-light" processing (or the processing is too heavy to complete in real time), NRT may be appropriate. There is no network connection and no interaction with the process while it is running.The server takes commands only from a file of OSC commands (a "score"), prepared in advance.There is no attempt to synchronize with any other time reference. The server processes audio as fast as possible, or as slow as necessary, depending only on workload.If the server starts with the -N switch, it runs in non-realtime (NRT) mode: The server can also send OSC messages back to the client.The server receives OSC commands over a network interface, and processes them either at the next available opportunity, or at a time specified by a timestamp.The server is constantly processing audio, at a rate determined by the hardware sample rate.When you boot a SuperCollider server (scsynth, or supernova on supported systems) normally, it runs in realtime mode: ![]()
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