In this paper, we propose a novel algorithm for pitch modification. The linear prediction residual is obtained from pitch synchronous frames by inverse filtering the speech signal. Then the Discrete Cosine Transform (DCT) of these residual frames is taken. Based on the desired factor of pitch modification, the dimension of the DCT coefficients of the residual is modified by truncating or zero p...

This paper argues about pitch pattern variations of user utterances in human-machine dialogue. For intelligent humanmachine communication, it is essential that machines understand prosodic characteristics which imply a user's various attitude, emotion and intention beyond vocabulary. Our original focus is on particularly distinct pitch patterns and their roles in the actual dialogues. We used h...

Pitch is one of the most important features of natural sounds, underlying the perception of melody in music and prosody in speech. However, the temporal dynamics of pitch processing are still poorly understood. Previous studies suggest that the auditory system uses a wide range of time scales to integrate pitch-related information and that the effective integration time is both task- and stimul...

As resist image responses vary with duty ratio, the identification of a particularly challenging instance leads to its classification as a “forbidden pitch.” The increased application of various RET methods has often resulted in the misuse of this label for anything unexplained by linear effects. This paper attempts to dispel the myths regarding the imaging variations that occur with pitch. Fur...

This paper describes an algorithm for melody detection in polyphonic recordings. Our approach starts by obtaining a set of pitch candidates for each time frame, with recourse to an auditory model. Trajectories of the most salient pitches are then constructed. Next, note candidates are obtained by trajectory segmentation (in terms of frequency and pitch salience variations). Too short, low-salie...

Plane perching on a wire has been demonstrated with success in laboratory conditions by [Cory & Tedrake, 2008]. The present paper focuses on designing a controller for a small wall landing glider. We use a simulator and a reinforcement learning algorithm in a coarsely discretized state-space to design an optimal control for the landing. Analysis of this policy allows us to deduce a simpler clos...

Single-armed, stationary density waves can exist even in disks with only weak selfgravity, provided that the rotation curve is dominated by a central mass. Such waves could play a significant role in the transport of angular momentum. By variational methods, we derive nonlinear versions of the dispersion relation, angular momentum flux, and propagation velocity in the tight-winding limit. The p...

This paper investigates the structuring of information in taskoriented dialogues, focussing on sequences of phrases produced with final-rising contours conveying continuation. Fragments extracted form dialogues are described with the aim of both showing some unexpected phonetic correlates of such contours and discussing the characteristics of the contexts where these correlates are observed. A ...