TIME-DOMAIN SIMULATION OF SINGLE REED WIND INSTRUMENT - FROM THE MEASURED INPUT IMPEDANCE TO THE SYNTHESIS SIGNAL - WHERE ARE THE TRAPS

Time domain simulation of single reed wind instrument using physical m odelling and the computed input impedance of the resonators is one of the common techniques used to develop synthesise or study the characte ristics of such instruments. We present here a method for time domain simulation of single reed wind instruments based on knowledge of the m easured impedance. In this case, the difficulty of the technique is th e development of a numerical tool which is reliable for low sampling f requencies. This is a consequence of using a measured input impedance, due to the limited bandwidth of the measurements. Once a simple physi cal model is found, attention is paid to the reflection function calcu lation from the input impedance. Then, the evaluation of the reed resp onse in the discrete time domain is presented using different numerica l techniques. Results show that care must be taken for these two point s in order to develop a simulation tool which can be used for aiding t he design of musical instruments.