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Conversion of Digital Music to Sheet Music

Conversion of Digital Music to Sheet Music. Hugh Smith. WAVE File Basics. RIFF FMT Data. https://www.seas.upenn.edu/~cis520/project/sound_wave.png. RIFF Descriptor Chunk. FMT Format Chunk. *If the file is compressed, more bytes may come after the end of the fmt chunk.

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Conversion of Digital Music to Sheet Music

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  1. Conversion of Digital Music to Sheet Music Hugh Smith

  2. WAVE File Basics • RIFF • FMT • Data https://www.seas.upenn.edu/~cis520/project/sound_wave.png

  3. RIFF Descriptor Chunk

  4. FMT Format Chunk *If the file is compressed, more bytes may come after the end of the fmt chunk.

  5. WAVE File Characteristics • Number of Channels = 1 for mono, 2 for stereo • Compression code: indicates type of compression used on the file • Can be many types: • Uncompressed • MPEG • GSM • Microsoft ADPCM • Etc.

  6. WAVE File Characteristics, cont’d • Sampling rate • Block Align • SigBitsPerSample / NumChannels • Significant Bits per Sample • 8, 16, 24, 32

  7. Data Chunk * = The actual data of the file.

  8. ABC Notation

  9. Sound Waves • Amplitude • Phase • Frequency

  10. Fourier Transform • Time domain  Frequency domain

  11. Time Issues • Number of samples • Fourier transform

  12. Bibliography • http://www.sonicspot.com/guide/wavefiles.html • https://ccrma.stanford.edu/courses/422/projects/WaveFormat/ • http://thesession.org • F. Richard Moore, Elements of Computer Music • http://www.phy.mtu.edu/~suits/notefreqs.html • http://www.dspdimension.com/admin/dft-a-pied/

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