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• W1551224184 abstract "The Sound Description Interchange Format (SDIF) is a recently-adoptedstandard that can store a variety of sound representations: time domain,spectral, higher-level models, etc. SDIF's design strikes a balance betweenan overly strong standard, which would restrict innovative and creativeuses, and an overly weak standard, in which it is so easy to modify theformat that each institution has its own incompatible version of SDIF, evenwhen using the same sound representation. SDIF's structure as a sequence oftime-tagged IFF-style chunks or supports this balancedextensibility: extra information can be added to standard frame types, andentirely new representations can be defined by new frame types. This paperreviews early uses of SDIF.IUA, IRCAM, and CNMAT have added SDIF support to existing tools for soundanalysis and synthesis, using standard frame types for STFT results,spectral peaks, tracked sinusoids (both pseudo-harmonic or not), andfundamental frequencies. Some applications augment these basicrepresentations with additional information such as perceptual salience ofeach partial and time points for attack, sustain, and release for soundsthat fit the model of a single note. An important feature of SDIF is thatthis kind of custom extra information can be added to standard frame typesin a way that allows programs that don't know about the extra information toread and manipulate the basic data.We also review experimental frame types that are being used for innovativenew sound representations not yet part of the SDIF standard. IUA's method oftaking a sinusoids plus residual model and further analyzing the residualresults in an SDIF file with multiple independent streams of data tiedtogether semantically into a single sound object. CNMAT's prototype modelfor pipe organ sounds is based on the standard exponentially-decaying frametype, but with additional information to give the parameters of acosine-shaped attack for each partial. IRCAM's Chant software uses FOFsynthesis and includes a number of new SDIF frame types.Additional experiments involve using SDIF to generate new data structuresfor the representation of spectral data. One particularly promising approachrearranges the time tagged frames so they form a matrix of frames indexed bypitch, amplitude, and other global properties of each spectrum.As new uses of SDIF reach maturity they will be added to the standard;therefore it's important for all users of SDIF to make their experimentalwork known to the SDIF community. This presentation will be of interestboth to users wanting to take advantage of these sound representations andto developers interested in integrating their work into the SDIF effort." @default.
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• W1551224184 date "1998-10-01" @default.
• W1551224184 modified "2023-09-25" @default.
• W1551224184 title "New Applications of the Sound Description Interchange Format" @default.
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