Signal Analysis and Representation
- Multi-Speech, Model 3700
- The Hidden Markov Model Toolkit (HTK)
- The Edinburgh Speech Tools Library
In acoustic phonetics, the speech signal is represented as a waveform (amplitude curve over time). Through subsequent frequency analysis (e.g., using an FFT), a spectrogram (frequency distribution over time) is generated. For automatic speech processing (e.g., recognition, synthesis), further derived and discretised representations are required, e.g. mel-cepstrum coefficients (see also DSP Techniques).
Signal Analysis; Signal Representation;