SPIRIT DSP announced that its TeamSpirit Voice Engine Mobile is enabling HD VoIP calling on the recently launched (July 19) Viber application for Android mobile devices, allowing Viber's Android users to experience the highest call quality possible. SPIRIT's Voice Engine Mobile has been powering the extremely popular free Viber application since it first came to market in Dec 2010 for iPhone users.

The Viber application lets iPhone and Android users make free HD Viber-to-Viber calls and send messages over 3G and Wi-Fi connections, bypassing the use of any cellular voice minutes. Today, SPIRIT's Voice Engine Mobile is powering quality Viber-to-Viber free calling to more than 20 million Viber-reported registered users on both Android and iPhone devices, representing a reported call traffic volume of more than one billion minutes of calls per quarter.

By providing platform interoperability on multiple flavors of Android hardware and OS versions, SPIRIT enables cross-device, cross-network mobile VoIP communication for Viber users.

SPIRIT's TeamSpirit Voice&Video Engine Mobile enables HD-quality voice and video communications on a broad range of mobile devices, addressing all impairments inherent with IP networks - such as congestion, echo, noise suppression, latency, delay (jitter), packet loss, lip synchronization, etc. - to secure high quality voice over Wi-Fi and 3G/4G (LTE/WiMAX) networks. It includes highly optimized standard voice and video codecs, such as G.711, G.723, G.729, iLBC, SILK, H.263, H.264 and SPIRIT's robust high-definition patent-free wideband IP-MR™ codec. TeamSpirit Mobile is available on all popular smartphone operating systems including iOS, Android 2.x and Windows Phone 7.