千人交響樂 - PowerPoint PPT Presentation

千人交響樂
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千人交響樂. Yiju Lin. The Signals of Music. Harmonics part Ex : C1, D1, … Residual ( Noise ) part. Method. Get the Harmonics Part Get the filter coefficients Set the filters with different coefficients of timbre, pitch ,and amplitude Than get the result Get the residual part

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千人交響樂

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3499870

千人交響樂

Yiju Lin


The signals of music

The Signals of Music

  • Harmonics part

    • Ex : C1, D1, …

  • Residual ( Noise ) part


Method

Method

  • Get the Harmonics Part

    • Get the filter coefficients

    • Set the filters with different coefficients of timbre, pitch ,and amplitude

    • Than get the result

  • Get the residual part

  • Add the harmonics and the residual part


Harmonics part lpc synthesis

Harmonics Part – LPC synthesis

只是找形狀

得到 filter的參數

True envelope estimation

TE- LPC

Coefficients

Impulse Train * LPC Filter = Harmonics Part


Residual noise part ifft

Residual ( Noise ) part - IFFT

  • Use noise level to estimate the noise

  • Synthesized with original phase or random phase. (Just use “ifft”.)


Reference

Reference

  • Pei-Yin Tsai, Tien-Ming Wang, and Alvin Su, “GPU-BASED SPECTRAL MODEL SYNTHESIS FOR REAL-TIME SOUND RENDERING”,in Proc. of the 13th Int. Conference on Digital Audio Effects (DAFx-10), Graz, Austria, September 6-10, 2010.

  • SCREAM Lab 吳翊臺學長


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