Objectives: Speech and language development is one of the main aspects of evolution in humans and is one of the most complex brain functions such that it is referred to as one of the highest cortical functions such as thinking, reading and writing. Speech and language disorders are considered as a major public health problem because they cause many secondary complications in the childhood and a...

The significance of varying the height and bandwidth of the group delay spectrum is hitherto unexplored in the spectral reconstruction of speech signals. In this paper, a family of variable height-bandwidth filters are designed to evaluate their performance in the reconstruction of speech. The design procedure for higher order group delay filters as a cascade of second order filters is first de...

This paper describes the best method for automatic segmentation of Punjabi speech. Punjabi is one the most widely used language. Consequently, Punjabi is a syllabic language, so syllables are found to be the best units for the preparation of speech database. Further the automatic segmentation of speech is proved to be the better approach than the manual segmentation. The basic characteristics o...

When a speaker's voice returns to one's own ears with a 200-ms delay, the delay causes the speaker to speak less fluently. This phenomenon is called a delayed auditory feedback (DAF) effect. To investigate neural mechanisms of speech processing through the DAF effect, we conducted a functional magnetic resonance imaging (fMRI) experiment, in which we designed a paradigm to explore the conscious...

When listening to natural speech, listeners are fairly adept at using cues such as pitch, vocal tract length, prosody, and level differences to extract a target speech signal from an interfering speech masker. However, little is known about the cues that listeners might use to segregate synthetic speech signals that retain the intelligibility characteristics of speech but lack many of the featu...

An important function of entertainment robots is voice communication with humans. For realizing them, accurate speech recognition and a speaker-direction detection mechanism are necessary. The directnoise problem is serious in such speech processing. The microphone attached to the robot body receives not only human voices but also motor and mechanical noises directly. The direct noises are ofte...

This paper presents a speech enhancement method to suppress the car noise interference. A linear microphone array is adopted for far-talking speech acquisition and delayand-sum beamforming noise reduction. We exploit an effective time delay estimator using the coherence function between the reference microphone and the beamformed speech. To further enhance the beamformed speech, we design an im...

As speech-coding standards have improved over the years, so complexity has increased, and less emphasis been placed on low encoding/decoding delay. We present a low-complexity, low-delay speech codec based tree-coding with sample-by-sample adaptive long- short-code generators that incorporates pre- post-filtering for perceptual weighting multimode classification comfort noise generation (CNG). ...