Nidhi Chahal

Nidhi Chahal


Research Focus & Metrics

Academic Career Length

12Years (2015-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

View All Publications
19 March 2022 in Sensors
Verified
Journal Article
Open access
PDF file
AAApeksha Aggarwal
Apeksha Aggarwal
Akshat SrivastavaAkshat Srivastava
Akshat Srivastava
AAAjay Agarwal
Ajay Agarwal
NCNidhi Chahal
Nidhi Chahal
Dilbag SinghDilbag Singh
Dilbag Singh
Heung No LeeHeung No Lee
Heung No Lee
Recognizing human emotions by machines is a complex task. Deep learning models attempt to automate this process by rendering machines to exhibit learning capabilities. However, identifying human emotions from speech with good performance is still challenging. With the advent of deep learning algorithms, this problem has been addressed recently. However, most research work in the past focused on feature extraction as only one method for training. In this research, we have explored two different methods of extracting features to address effective speech emotion recognition. Initially, two-way feature extraction is proposed by utilizing super convergence to extract two sets of potential features from the speech data. For the first set of features, principal component analysis (PCA) is applied to obtain the first feature set. Thereafter, a deep neural network (DNN) with dense and dropout layers is implemented. In the second approach, mel-spectrogram images are extracted from audio files, and the 2D images are given as input to the pre-trained VGG-16 model. Extensive experiments and an in-depth comparative analysis over both the feature extraction methods with multiple algorithms and over two datasets are performed in this work. The RAVDESS dataset provided significantly better accuracy than using numeric features on a DNN.

23 June 2015
Verified
Book Chapter
Closed access
PDF file
NCNidhi Chahal
Nidhi Chahal
SCSantanu Chaudhury
Santanu Chaudhury