Speaker-dependent features for spontaneous speech recognition

Speaker-Invariant Features for Automatic Speech Recognition

In this paper, we consider the generation of features for automatic speech recognition (ASR) that are robust to speaker-variations. One of the major causes for the degradation in the performance of ASR systems is due to inter-speaker variations. These variations are commonly modeled by a pure scaling relation between spectra of speakers enunciating the same sound. Therefore, current state-of-th...

On the relevance of high-level features for speaker independent emotion recognition of spontaneous speech

In this paper we study the relevance of so called high-level speech features for the application of speaker independent emotion recognition. After we give a brief definition of highlevel features, we discuss for which standard feature groups high-level features are conceivable. Two groups of high-level features are proposed within this paper: a feature set for the parametrization of phonation c...

Speaker Independent Speech Recognition Using Hidden Markov Models for Persian Isolated Words

Speaker dependent emotion recognition using speech signals

This paper examines three algorithms to recognize speaker’s emotion using the speech signals. Target emotions are happiness, sadness, anger, fear, boredom and neutral state. MLB(Maximum-Likelihood Bayes), NN(Nearest Neighbor) and HMM(Hidden Markov Model) algorithms are used as the pattern matching techniques. In all cases, pitch and energy are used as the features. The feature vectors for MLB a...

Contextual invariant-integration features for improved speaker-independent speech recognition

This work presents a feature-extraction method that is based on the theory of invariant integration. The invariant-integration features are derived from an extended time period, and their computation has a very low complexity. Recognition experiments show a superior performance of the presented feature type compared to cepstral coefficients using a mel filterbank (MFCCs) or a gammatone filterba...