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In recent years, the advancement in voice-based authentication leads in the field of numerous forensic voice authentication technology. For verification, the speech reference model is collected from various open-source clusters. In this chapter, the primary focus is on automatic speech recognition (ASR) technique which stores and retrieves the data and processes them in a scalable manner. There are the various conventional techniques for speech recognition such as BWT, SVD, and MFCC, but for automatic speech recognition, the efficiency of these conventional recognition techniques degrade. So, to overcome this problem, the authors propose a speech recognition system using E-SVD, D3-MFCC, and dynamic time wrapping (DTW). The speech signal captures its important qualities while discarding the unimportant and distracting features using D3-MFCC.

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Today's world is absorbed by digital technology and developments. From daily bread to business, from home to office, the implementation of electronic devices has become an integral part of life. The wallet has transformed the global payments ecosystem by offering multiple digital services, from utility payments to e-tailing. After demonetization, e-payment systems, mainly mobile wallets, have become a popular means of conducting transactions without physical presence. This study was conducted on consumer preferences, satisfaction, and issues when using mobile wallets for cashless payment. The study used the chi-square method to analyze and interpret the primary data of 80 respondents. The study implies that today's life is more important to mobile wallets such as Paytm, MobiKwik, Bhim, and free charge.

The war between Russia and Ukraine negatively impacts growth and results in a high inflation rate in the global village. In 2021, Ukraine exported $2.6B to India and imported $509.94M. During the same period, bilateral trade totaled $12.3 billion, with Indian exports totaling $3.33 billion and imports totaling $8.7 billion. The last three months, foreign portfolio investors (FPIs) pulled out of Indian markets — Rs. 50,000 crores more than the combined withdrawal of the previous nine months. As the weakened rupee made imports more expensive, the rise in crude oil prices worsened things. Brent crude prices, which hovered around $80 a barrel in early 2022, shot up to $128 a barrel in the wake of the Russian invasion. The heat of the Russo-Ukrainian war is now reaching citizens in India and around the world. This article is an overview of the aftermath of the Russia-Ukraine war on the Indian economy.