TY - JOUR AU - Zotkin, Dmitry N. AU - Chi, Taishih AU - Shamma, Shihab A. AU - Duraiswami, Ramani PY - 2005 DA - 2005/06/21 TI - Neuromimetic Sound Representation for Percept Detection and Manipulation JO - EURASIP Journal on Advances in Signal Processing SP - 486137 VL - 2005 IS - 9 AB - The acoustic wave received at the ears is processed by the human auditory system to separate different sounds along the intensity, pitch, and timbre dimensions. Conventional Fourier-based signal processing, while endowed with fast algorithms, is unable to easily represent a signal along these attributes. In this paper, we discuss the creation of maximally separable sounds in auditory user interfaces and use a recently proposed cortical sound representation, which performs a biomimetic decomposition of an acoustic signal, to represent and manipulate sound for this purpose. We briefly overview algorithms for obtaining, manipulating, and inverting a cortical representation of a sound and describe algorithms for manipulating signal pitch and timbre separately. The algorithms are also used to create sound of an instrument between a "guitar" and a "trumpet." Excellent sound quality can be achieved if processing time is not a concern, and intelligible signals can be reconstructed in reasonable processing time (about ten seconds of computational time for a one-second signal sampled at ). Work on bringing the algorithms into the real-time processing domain is ongoing. SN - 1687-6180 UR - https://doi.org/10.1155/ASP.2005.1350 DO - 10.1155/ASP.2005.1350 ID - Zotkin2005 ER -