What we should know about sound. Sound is produced when there’s an object that vibrates and those vibrations determine the oscillation of air molecules which creates an alternation of air pressure and this high pressure alternated with low pressure causes a wave.

Some key terms in audio processing.


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Topic modeling is a type of statistical modeling tool which is used to assess what all abstract topics are being discussed in a set of documents. Topic modeling, by its construction solves the problem of creating topic in an unsupervised manner.

Generally the statistical approach is used by considering that each document talks about a few different topics, while each topics are generally denoted by a distribution of words. i.e. …


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Fourier transforms is an extremely powerful mathematical tool that allows you to view your signals in a different domain, inside which several difficult problems become very simple to analyze.

At a high level, the Fourier Transform will allow us to convert our data to a different form where we can easily pick and choose the most important components and remove all of the noise.

History

Joseph Fourier discovered that given some periodic functions s(x) and an interval P, we can say


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Content based filtering is about extracting knowledge from the content.

In a content-based Recommender system, keywords are used to describe the items and a user profile is built to indicate the type of item this user likes. In other words, these algorithms try to recommend items that are similar to those that a user liked in the past (or is examining in the present).


JPEG is not a file format, although everyone talks about JPEG files. JPEG is a compression method much like the codec you would use in a video. We use the JPEG File Interchange Format, or JFIF as the actual wrapper that holds that compress data. So, let’s look at the steps involved in the compression of an image using JPEG.

Steps involved in compression of an image using JPEG
Steps in the compression of an image using JPEG

What is Colour space of an image: Colour spaces is a way of representing the colours in an image. Mathematicians love to represent things geometrically and spatially so they came up with an idea of colour space. It’s quite simple…

Ankur Dhuriya

Data Scientist with experience on Automatic Speech Recognition (ASR), Natural Language Processing (NLP) and Machine Learning (ML).

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