DC offset and Audio Filtering

On April 10, 2024

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 waveform […]

Noise during online courses

On November 22, 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 headphones for call centers, what’s next?

On September 28, 2023

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

On July 4, 2023

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

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

On August 1, 2022

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 […]

Transcription in noisy call centers

On July 18, 2018

Today, modern call centers are deploying sophisticated software components to help them improve customer experience, increase productivity and comply with new regulations. One of the enablers for these new capabilities is the requirement to have a reliable and accurate analysis and transcription of the agent’s voice. Such analysis and transcription is used for many purposes […]

PBXMate vs. SoliCall Pro

On July 16, 2018

If you are a call center, conference bridge provider or any other organization looking to improve audio quality in your telephony using our innovative technology, you might ask yourself which of our products is most suitable for you. Assuming you are not developing your own telephony software our SDKs are not an option but what […]

How to evaluate an echo cancellation algorithm?

On March 25, 2018

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

On August 7, 2023

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 […]