Heat Map

On July 10, 2023

A heat map is a visualization technique that is using different colors to distinguish between the areas based on their heat. The heat can be any phenomenon that we are currently analyzing like: temperature in physics, precipitation in meteorology, birthrate in social science and infection rate in health science. In this post, our heat will […]

Could-based noise cancelling software

On July 9, 2023

Audio filtering, like noise cancellation and echo cancellation, can be performed on the sending side (i.e. near-end), receiving side (i.e. far-end) or on the network. Each option has its own advantages and disadvantages. In this post, we will discuss the noise cancelling filtering and the cases when it is likely or recommended to perform it […]

Echo Cancellation, Art or Science?

On July 9, 2023

Echo Cancellation is one of the most critical component that is required in order to be able and have a full-duplex phone communication. Echo Cancellation is not a “nice to have” component and trying to make a phone call without it can become a quality nightmare. In this post, we will summarize the different functionalities […]

Noise Cancellation vs. Echo Cancellation

On July 10, 2023

Echo Cancellation is the process of cancelling echo that bounce back from the loudspeakers to the microphone. The main purpose of echo cancellation is to prevent the speaker from hearing himself/herself echoing back in a delay. Noise Cancellation is the process of removing from the captures signal background noise. Although the goal of both these […]

Three methods of Voice Cancellation

On October 4, 2022

Real time software-based Voice Cancellation is the technology of removing, in real-time, ambient voices of other people talking in the background. This technology is mainly required in verticals like call centers and open office in which people are co-located and usually sitting relatively close to each other and disturbing each other. The Voice Cancellation is […]

Cleaning Noisy Recordings

On July 9, 2023

Noise is everywhere. In almost any location and hour noise exists. It can vary from modest noise to significantly disturbing one. Usually people try to ignore the noise but there are cases in which you wish noise could be completely removed. Let’s say you run an education center and you record your classes. Wouldn’t you […]

Reverberation and Echo Cancellation

On July 5, 2023

Reverberation, in audio processing, is an on-going echo after a sound is produced. To illustrate this phenomena let’s think of a simple scenario in which you call a friend that is using laptop without headsets. In this case your voice will be played by the speakers of the laptop and from the speakers your voice […]

Boost Speech to Text Accuracy

On July 4, 2022

Natural Language Processing (NLP) is a branch in science that is gaining momentum in the last years. Its holy grail is to build a machine that understand and respond to text or voice data the same way that humans do. NLP has gained momentum due to two main correlated reasons: (1) the increasing usage of […]

Sorry, what?

On June 2, 2022

In this post we would like to discuss a disturbance in phone calls that might happen from time to time: you are in a phone call but the voice of the other party is too weak making it had to understand. In this case you will initially try and increase the volume on your side […]

Cocktail party and crosstalk

On September 9, 2023

The cocktail party problem is one of the oldest problems in the arena of signal processing. The problem is describes as follows: in a cocktail party there are many people talking. All their voices are mixed in the air and the people listening will hear all the voices blended together. Nevertheless, in most cases, the […]