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 […]

SoliCall Connect Vs. SoliCall Pro

On October 28, 2022

We are frequently asked by call centers and enterprises to help them understand the difference between SoliCall Connect and SoliCall Pro. In this post we will cover these two products and highlight the key differences. What is common? Both these products are software-based products that aim to improve audio quality in telephony. SoliCall Pro is […]

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 […]

On December 4, 2021

Background [EDITED] The following blog post provides an overview on all major components that are required when building/designing an echo cancellation software. In this post we will discuss a common implementation issue we have seen many times – audio stream synchronization.

AI, Can you identify echo?

On March 15, 2021

Acoustic Echo in phone calls is caused when audio that is being played on the loudspeakers is then picked up by the microphone and afterwards transmitted to the far-end person who is talking. As a result the far-end talking person will hear himself/herself in a delay. When echo appears in a phone call it is […]

Noise Cancelling Headsets – the soft version

On March 19, 2020

What is required from a software to replace a noise cancelling headsets? In this post we will review the multiple functions of the noise cancelling headsets and discuss how they could be replaced by a software. Echo Cancellation Echo is one of the most disturbing source of noise. It appears when the audio that is […]

Echo and noise in Kiosks and Vending Machines

On April 23, 2019

Kiosks and vending machines are perhaps the most widely used devices that can be found almost in any public area. Their main purpose is to provide a wide spread service in almost any public location. These devices are very common and their number is not very different from the size of the human population. For […]

DC offset and Audio Filtering

On April 20, 2019

In this post we describe a phenomena called “DC offset” in audio signal and its impact on the quality of audio filtering like noise reduction, echo cancellation and automatic gain control. We say that a signal has a DC offset distortion when the mean amplitude of its waveform is not zero. A normal voice is […]

Acoustic Echo Cancellation Vs. Acoustic Echo Suppression

On September 2, 2018

Echo is a known problem in telephony and when it appears it dramatically reduces the quality of the audio. In some cases the echo can even turn out to howling effect that generates a deafening noise. To familiarize yourself with the basic terms that relates to echo cancellation, you are invited to read our blog-series […]

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