Echo Cancellation, Art or Science?

On December 5, 2022

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 December 5, 2022

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 September 6, 2022

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 August 2, 2022

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 May 3, 2022

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 […]

Aggressive noise cancellation

On April 3, 2022

In the last couple of years many vendors offer noise cancellation software that is aimed to attenuate the ambient noise in phone calls. The first question that comes into mind when testing such a software is, does my peer hear the ambient noise or not? Can he/she hear me slamming the door? What about my […]

Noise Locator

On March 3, 2022

Where is the noise coming from? Who or what is making the noise? Which of my employees suffer from significant ambient noise? These are all valid questions that any manager, especially a call center manage, might be asking. Answering these questions without an automatic tool is difficult especially if the employees are working from a […]