The field of mixed-reality interface design is relatively young and in regards to music, has not been explored in great depth. Using computer vision and collision detection techniques, Freepad further explores the development of mixed-reality interfaces for music. The result is an accessible user-definable MIDI interface for anyone with a webcam, pen and paper, which outputs MIDI notes with vel...

In this paper a computational model is described that transcribes polyphonic MIDI pitch files into the Western traditional music notation. Input to the proposed algorithm input is merely a sequence of MIDI pitch numbers in the order they appear in a MIDI file. No a priori knowledge is required such as key signature, tonal centers, time signature, voice separation and so on. Output of the algori...

We present work towards a computer system for the automatic transcription of piano performances. The system takes audio files containing polyphonic piano music as input, and produces MIDI output, representing the pitch, timing and volume of the musical notes. The aim of this work is not to reduce the performance data to common music notation, but to extract the performance parameters for a quan...

The problem of automatic melody line identification in a MIDI file plays an important role towards taking QBH systems to the next level. We present here, a novel algorithm to identify the melody line in a polyphonic MIDI file. A note pruning and track / channel ranking method is used to identify the melody line. We use results from musicology to derive certain simple heuristics for the note pru...

Standard MIDI files contain data that can be considered as a symbolic representation of music (a digital score), and most of them are structured as a number of tracks, one of them usually containing the melodic line of the piece, while the other tracks contain the accompaniment. The objective of this work is to identify the track containing the melody using statistical properties of the notes a...

The Real-Time Protocol (RTP) is an extensible transport for sending media streams over Internet Protocol packet networks. We describe a new payload format that extends RTP to transport MIDI (the Musical Instrument Digital Interface command language). The payload format encodes all commands that may legally appear on a MIDI 1.0 DIN cable. The format is suitable for interactive applications (such...

In this paper is described a data-driven algorithm for the functionally correct spelling of MIDI pitch values in terms of Western musical notation. Input is in the form of MIDI files containing accurate pitch and rhythmic information with corresponding ground-truth spelling information for training and evaluation. The algorithm recovers harmonic information from the MIDI data and spells pitches...

MAPS – standing for MIDI Aligned Piano Sounds – is a database of MIDI-annotated piano recordings. MAPS has been designed in order to be released in the music information retrieval research community, especially for the development and the evaluation of algorithms for single-pitch or multipitch estimation and automatic transcription of music. It is composed by isolated notes, random-pitch chords...

Sébastien Chevrot,1 Roland Martin2 and Dimitri Komatitsch3 1IRAP, CNRS UMR 5277, Université Toulouse 3 Paul Sabatier, Observatoire Midi-Pyrénées, 14 avenue Edouard Belin, F-31400 Toulouse, France. E-mail: [email protected] 2GET, CNRS UMR 5563, Université Toulouse 3 Paul Sabatier, Observatoire Midi-Pyrénées, 14 avenue Edouard Belin, F-31400 Toulouse, France 3LMA, CNRS UPR 7051, Unive...

In "Fractal Mountains," I used recursive subdivision of time, pitch, and amplitude in a fractal algorithm that generates an accompaniment from material played freely on a MIDI wind controller (the "MIDI Horn"). The piece was realized entirely in electronic sound. "Fractal Mountains" won first prize in the international competition for micro tonal music at the 1988 Third Coast New Music Festival...