![]() The first four arguments in the above examples are numeric arguments: they are (real or integer) numbers. If you want to draw the sound with different settings, say from 1 to 3.2 seconds, scaled between -1 and +1 instead of automatically, with garnishings off, and with the waveform drawn as poles, you would have the following settings window: The texts “(= all)” and “(= auto)” above are just Praat’s explanations of what it means to type a zero in those fields (namely “draw all times” and “use vertical autoscaling”, respectively) in a script they are superfluous and you shouldn’t write them. You see that in a script, all of the arguments are supplied after the command, preceded by a colon and separated by commas, in the same order as in the settings window, counted from top to bottom (and, within a line, from left to right). ![]() Pressing the OK button in the above window is equivalent to executing the following script line: In this example, all the settings have their standard values: you want to draw the whole time domain of the Sound, you want to have autoscaling vertically, you want to see garnishings around the picture (a box, labelled axes, and numbers), and you want the waveform to be drawn as a curve. six so-called settings (or in programming jargon: arguments): will appear in the Draw menu, and when you click it, Praat will present you with a settings window, which asks you to supply six pieces of additional information, i.e. Most commands in Praat require the user to supply additional information these are the commands whose title ends in “.”.įor instance, when you select a Sound, the command Draw. Not all menu commands are as simple as those on the previous page, which act immediately once you choose them from a menu (e.g. To start a program from the command line instead and sending it a message, you would not use sendpraat, but instead run the program with a script file as an argument. If you do not want to receive such a message (if your program has no handler for it, the SIGUSR2 signal will kill your program), then do not include such a line. If the first line of your script is the comment “ # 999”, where 999 stands for the process id of your program, Praat will send your program a SIGUSR2 signal back when it finishes handling the script. 1178, send it a SIGUSR1 signal: kill -USR1 1178 get Praat's process id from ~/.praat-dir/pid ģ. on Linux, write the Praat script that you want to run, and save it as ~/.praat-dir/message Ģ. Instead of using sendpraat, you can also just take the following simple steps in your program:ġ. You can download the source code of the sendpraat subroutine via or from. This causes the program Praat to run the script doAll.praat with an argument of "20". Strcpy (message, "runScript: \bs"doAll.praat\bs", 20") Fortunately, the receiving program knows runScript: Sometimes, it may be unpractical to send a large script directly to sendpraat. On Linux, sendpraat will allow Praat at most 3000 seconds to perform this. This will work because Play reverse is an action command that becomes available in the dynamic menu when a Sound is selected. Snprintf (message,1000, "Read from file: ~%s\nPlay reverse\nRemove", fileName) ĮrrorMessage = sendpraat (NULL, "praat", 3000, message) ![]() Suppose you have a sound file whose name is in the variable fileName, and you want the program Praat, which can play sounds, to play this sound backwards. The return value errorMessage is a statically allocated string internal to sendpraat, and is overwritten by the next call to sendpraat.Įxample 2: playing a sound file in reverse On MacOS and Linux, sendpraat returns immediately on Windows, the timeOut argument is ignored. This causes the program Praat to quit (gracefully), because Quit is a fixed command in one of the menus of that program. If (errorMessage) fprintf (stderr, "%s", errorMessage) Sendpraat may alter this text!ĮrrorMessage = sendpraat (NULL, "praat", 0, message) A timeOut of 0 means that the message will be sent asynchronously, i.e., that sendpraat will return immediately without issuing any error message. The number of seconds that sendpraat will wait for an answer before writing an error message. The first letter may be specified as lower or upper case it will be converted to upper case for Windows or MacOS and to lower case for Linux. The name of a running program that uses the Praat shell, e.g. This argument is ignored you can supply NULL. Syntax sendpraat (void * display, const char * program, long timeOut, char * text ) Sendpraat can be a subroutine for sending messages to a running Praat program.
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