Detailed description. Software that open sdif file. Add comment. Various data file type.
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There exist several ways, more or less precise and specific, to inspect and read the contents of an SDIF file in an OM visual program. You'll probably have to know about the contents structure of the file before to extract some particular data out of it. Several tools presented in this section might help, but a quick preview of the file structure using the SDIFFile editor is generally useful.
See the specific reference pages for a more complete descriptions and details about the box arguments and outputs select the box and type d. A set of tools allow to get some general data and information about the structure and contents of the file.
A list of "matrix streams" stream ID , frame type , matrix type tuples is returned. This information basically corresponds to what can be observed on the left-hand part of the SDIFFile editor. Note that the "real" structure of an SDIF file consists in identified frame streams in which matrices of different types are stored and actually not "matrix streams". The following boxes allow to get some specific information about the farmes and matrix in the SDIF file :.
Note that none of these tools give you any of the actual data contained in the file, but some meta-data related to the file structure.
Although type description might seem like stream descriptions, they list all possible matrix types allowed in frames of a given type, or all possible fields in matrices of a given type. It is not guaranteed that such "allowed" data will actually be in part of the file data. SDIF types are defined and initialized so they are attached to a particular file. There exist different ways to access the numerical values contained in an SDIF file.
It is important, in any case, to preliminary know what we are looking for, or where to find it. You might know exactly where to find the data you're looking for thanks to the inspection tools described in the previous sections.
The more useful and efficient way to extract data from an SDIF file is to know which type of data we want that is, what are the frame and matrix type we are looking for. The main required arguments are the stream ID, frame type and matrix type which will allow to discriminate a particular SDIF "matrix stream". The other ones allow to target a particular time interval begin time, end time , a particular matrix field column number , and a particular range for the matrix components rmin, rmax.
A number of predefined functions allow to make this conversion for you. Temporal markers may be contained in SDIF descriptions, for instance in the results of transient detection analysis. This list can for instance be connected to the markers input of a SOUND object, containing the original sound file.
By default, markers are extracted from all frames of type "1MRK". It is also possible to refine the markers extraction by specifying a specific matrix type to target. This is typically the case of the fundamental frequency analyses. If the SDIF data is not a fundamental frequency frame or matrix type is not "1FQ0" , then the additional inputs of this function allow to consider different types of frames and matrices.
Two main functions allow to extract chords or, more precisely "notes" from the partials in an SDIF file. Frame vs. Matrix Streams. Notes : Although type description might seem like stream descriptions, they list all possible matrix types allowed in frames of a given type, or all possible fields in matrices of a given type. The resulting data is a list of lists: each element represents the values of the different matrix components for the selected field.
If several fields are requested or no field number is given , the result will be a list of lists of lists: for each component, the values of the different requested or all fields will be retured. SDIF Classes. Introduction to SDIF. The Sound Object. Plan :. OpenMusic Documentation OM 6. A propos
SDIF Sound Description Interchange Format Documentation
The idea behind generating and keeping an analysis, a treatment as a persistent file, is to be able to use it again in AudioSculpt, or with other applications. Files can be open in AS directly from their location, with a drag and drop or a Ctrl click, or via the AudioSculpt interface. In the case of treatment or analysis file, AS looks for the sound file it was associated with automatically. If the file is found, it will be open in any case, even if another file is already open. If not, the user is asked to specify a file, and the treatment or analysis file opens in the same AS window.
Open SDIF file
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