Audio and User Directed Sound Synthesis

We present techniques to simplify the production of soundtracks in video by re-targeting existing soundtracks. The source audio is analyzed and segmented into smaller chunks, or clips, which are then used to generate statistically similar variants of the original audio to fit particular constraints. These constraints are specified explicitly by the user in the form of large-scale properties of the sound texture. For instance, by specifying where preferred clips from the source audio should be favored during the synthesis, or by defining the preferred audio properties (e.g. pitch, volume) at each instant in the new soundtrack. Alternatively, audio-driven synthesis is supported by matching certain audio properties of the generated sound texture to that of another soundtrack.