Title :
Parametric Excitation Model for Waveguide Piano Synthesis
Author :
Rauhala, Jukka ; Välimäki, Vesa
Author_Institution :
Lab. of Acousti. & Audio Signal Process., Helsinki Univ. of Technol., Espoo
Abstract :
In this paper, a method providing an excitation signal for the waveguide piano synthesis is presented. The waveguide synthesis string model needs an excitation signal, which stimulates the model to resonate at the partial frequencies. This signal simulates the force pulse, which occurs in the piano when the hammer hits the string. In the proposed method, the excitation signal is produced by using additive synthesis with matching partial amplitudes and frequencies, and by adding bandlimited white noise into the signal. The excitation model takes into account the velocity at which the piano key is pressed, using bandstop and lowpass filtering. The proposed method is suitable for real-time piano synthesis, as it is controllable and computationally efficient
Keywords :
acoustic signal processing; band-stop filters; bandlimited signals; filtering theory; frequency synthesizers; low-pass filters; musical instruments; waveguides; white noise; additive synthesis; bandlimited white noise; bandstop filtering; digital waveguide synthesis; excitation signal; lowpass filtering; parametric excitation model; string model; waveguide piano synthesis; Acoustic waveguides; Additive white noise; Filtering; Filters; Frequency synthesizers; Signal generators; Signal synthesis; Timbre; Waveguide components; White noise;
Conference_Titel :
Acoustics, Speech and Signal Processing, 2006. ICASSP 2006 Proceedings. 2006 IEEE International Conference on
Conference_Location :
Toulouse
Print_ISBN :
1-4244-0469-X
DOI :
10.1109/ICASSP.2006.1661236