AUDIO SIGNAL DRIVEN SOUND SYNTHESIS
Cornelius Poepel, Roger B. Dannenberg · 2005
A new approach to computer music instruments is described. Rather than sense control parameters from acoustic instruments (or non-acoustic instrument controllers), the sound of an acoustic instrument is used directly by a synthesis algorithm, usually replacing an oscillator. Parameters such as amplitude and pitch can control other aspects of the synthesis. This approach gives the player more control over details of the sound due to the use of the rich acoustic signal. Latency in sensing parameters, particularly pitch, is less of a problem because pitch information is carried directly by the acoustically generated signal. Several examples are described and the results of a subjective evaluation by musicians are presented. illustrates the configuration for what we call “Audio Signal Driven Sound Synthesis.” After describing related work, we describe two simple algorithms based on FM and subtractive synthesis. This leads to an oscillator-free (and pitch-estimation free) version of FM we call self-modulation. We then present findings from string players who tested our implementation. In Section 6, we compare and contrast our approach with more traditional computer music instrument building. 1.