Sound Synthesis and Signal Processing Techniques for ISP Verification
Discover various sound synthesis methods such as Additive Synthesis and Physical Modelling Synthesis, including the Karplus-Strong algorithm. Learn about Envelope shaping and spectrogram analysis for ISP Verification tests.
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Presentation Transcript
? Intelligent Signal Processing Test Angelo Ciaramella
Question 16 A waveform of the sound to be generated is computed by using models Question Karplus-Strong method use stable coefficients the delay line a queue ISP Verification tests
Sound Synthesis A waveform of the sound to be generated is computed by using models Some approaches Additive synthesis Physical modelling synthesis ISP Verification tests
Additive syntheis Directly from the Fourier Theorem ISP Verification tests
Envelope Amp Attacco (Attack) Decadimento (decay) Sostegno (sustain) Estinzione (release) ISP Verification tests t
Envelope Flute Trumpet Piano Violin ISP Verification tests Wood blocks Contrabass
Envelope ISP Verification tests
Spectogram ISP Verification tests
Physical modelling synthesis A mathematical model is used equations or algorithms to simulate a physical source of sound usually a musical instrument Methodology Karplus-Strong algorithm ISP Verification tests
Karplus-Strong algorithm Karplus-Strong method use the delay line = + L [ ] [ ] [ ] y n x n R y n L Difference equation Comb filter 1 1 ISP Verification tests = = ( ) H z L L L L 1 R z z R Transfer fuction
Chord of an acoustic guitar (A - 440Hz) ISP Verification tests Using waveguides
Chord of an acoustic guitar (A - 440Hz) Ideal chord with dissipation ISP Verification tests lF = s L T Lenght of the delay line considering physical parameters T Tension of the chord M mass l length Fs sampling frequency / m l
References Material Slides Video Lessons Books Signal Processing Book (Ciaramella) free download on the e-learning platform Audio digitale, A. Uncini, McGraw-Hill Education, 2006 Digital Signal Processing, J. Proakis, D. Manolakis, Prentice Hall, 4 edition, 2006 ISP Verification tests
