how to find LPC feature from speech to recognize human emotions in matlab? Please, can anyone help?

Can anyone provide LPC feature extraction matlab algorithm or code for speech emotion recognition?

Answer 1

[Prasanna]

Hi Divya,

It is my understanding that you want to perform LPC for feature extraction for speech processing and emotion recognition. To perform the same, you can follow the below given steps:

• Load the speech signal using the ‘audioread’ function.
• Apply a pre-emphasis filter to amplify the high frequencies of the signal
• Frame the signal and divide it into overlapping frames to capture the temporal dynamics
• Window each obtained frame using a Hamming window to reduce spectral leakage
• Use the ‘lpc’ function to compute the LPC coefficients for each frame.

For more information regarding the process, you can refer the following documentations:

• lpc - https://www.mathworks.com/help/signal/ref/lpc.html
• Speech emotion recognition by feature extraction - https://github.com/AlinaBaber/Speech-Emotions-Recognition-by-feature-extraction-and-Deep-learning-MatLab
• LPC analysis and synthesis of speech - https://www.mathworks.com/help/dsp/ug/lpc-analysis-and-synthesis-of-speech.html
• Speech emotion recognition - https://www.mathworks.com/help/deeplearning/ug/sequential-feature-selection-for-speech-emotion-recognition.html

Hope this helps!