Sho-So-In: New Synthesis Method for Addition of Articulations Based on a Sho-type Physical Model

This paper proposes a synthesis framework that synthesizes sho-like sounds with the same articulations as the given input signal. This approach has three components: acoustic feature extraction, physical parameter estimation, and synthesis. At the acoustic feature extraction part, amplitude and fundamental frequency of the input signal were extracted, and the parameter estimation part converts them to control parameters of the physical model. Then, using these control parameters, sound waveform is calculated at the synthesis part. Based on this method, sounds with various articulations were synthesized using several kinds of instrumental tones. As a result, sounds with natural frequency and amplitude variations such as vibrato, portamento can be created. The system was successfully used in a music piece as a sound hybridization tool.