High Availability In Call Centers

Posted by admin
On February 5, 2019

The telephony system in call centers is a critical component that is the heart of the operation. Any disruption to the normal flow of the phone calls will result in a significant damage to the business. For example, let’s look at a busy call center that is unable to accept new calls for few minute […]

DC offset and Audio Filtering

Posted by admin
On January 4, 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 […]

Noise during online courses

Posted by admin
On November 20, 2018

The number of online courses has been increasing over the last years. Education institutes, including the most respectable universities, offer e-learning for an increasing share of their courses. Online training is also widely used by internal education centers in many organizations. Although e-learning is widely used world-wide, there are areas in which it is the […]

Noise cancelling headsets for call centers, what’s next?

Posted by admin
On October 7, 2018

Noise removal in a call center environment is a challenging task. As opposed to non-human ambient noise like street noise and car horn, the background noise in call centers is actually human voices of people talking in the background. When performing noise removal in a contact center environment the challenge is to identify which of […]

Acoustic Echo Cancellation Vs. Acoustic Echo Suppression

Posted by admin
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 […]

Cancel noise in cloud-based call centers

Posted by admin
On August 1, 2018

Virtualization and cloud computing were the triggers for the emerging market of cloud-based call centers. We see more and more vendors offering cloud-based contact center software. If you are looking for a proof that this is no longer a small niche, just take a look at the efforts that Amazon is investing in its new […]

Noise cancellation for at-home agents

Posted by admin
On May 27, 2018

In today’s world, an increasing number of employees are working from their home-office. Few of the advantages of this work model are: reducing cost on infrastructure and shared work spaces, minimizing geographic limitations and saving commute time. There are many organizations that appreciate the advantages of such work model and encourage it. Following are few […]

How to evaluate an echo cancellation algorithm?

Posted by admin
On November 21, 2017

When you encounter an echo problem in your application, network or devices it is obvious you need to introduce an echo canceller. Your next step is to explore at least two possible locations for performing the echo cancellation: cancelling the echo on the client side or doing it on the server side. The decision […]

Noise map for call centers

Posted by admin
On September 4, 2017

Background Call centers suffers from significant ambient noise that is originated from multiple locations like: Other agents talking in the background. The supervisor/team-leaders shouting to instruct or enthuse the agents. A nearby gathering in the coffee corner. Such noise reduces the quality of the calls and directly impacts customer satisfaction. In addition the existence of […]

Echo Cancellation with negative echo tail

Posted by admin
On May 7, 2017

Background Echo path/tail is one of the most fundamental parameters when performing echo cancellation. In previous posts, we elaborated on the importance of echo tail and we also provided a Do It Yourself (DIY) method to calculate the echo tail. In most usage scenarios, the value of the echo tail will be a positive one […]

Page 1 of 412 3 4