SoliCall

SoliCall builds noise reduction, echo cancellation and voice cancellation software for voice calls, sold as desktop applications, server side products for contact centres and software development kits for embedding into other systems. The vendor publishes operational scale figures covering years in operation, millions of calls filtered per day and the number of countries served.

Voice cancellation is the capability that separates it from ordinary noise suppression and it solves a problem specific to shared workspaces. Standard noise reduction removes steady background sound such as fans or traffic, but the disruptive noise in a call centre is other people talking, and speech is exactly what a noise filter is designed to preserve. Suppressing surrounding human voices while keeping the intended speaker requires distinguishing between voices rather than between speech and noise.

The range of delivery options is the second notable thing. The same technology is offered as a desktop client for an individual, as a server product sitting in front of a contact centre PBX, and as mobile, client and server development kits for a vendor embedding it in its own product.

Processing efficiency and privacy are stated as design priorities, with the vendor emphasising its handling of security alongside processing power. For a contact centre this matters because filtering runs on live calls at volume, and it determines both hardware cost and whether call audio leaves the organisation.