Product category:
Embedded Software and Operating Systems
News Release from: Spirit DSP | Subject: SPIRIT NetJet
Edited by the Electronicstalk Editorial
Team on 12 November 2004
Software improves speech quality
Spirit, a supplier of embedded software products for telecom and VoIP, has launched an enhanced version of its NetJet software targeted for VoIP communication.
Spirit, a supplier of embedded software products for telecom and VoIP,has launched an enhanced version of its NetJet software targeted for VoIP communication Spirit NetJet is a set of state-of-the-art algorithms designed to improve voice-over-IP sound quality: Jitter Buffer, Packet Loss Concealment (PLC), and Forward Error Correction (FEC)
This article was originally published on Electronicstalk on 9 Oct 2001 at 8.00am (UK)
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The software successfully overcomes the problems of incoming network jitter and packet losses delivering toll speech quality even in multipoint conversations.
The solution is easily integrated in both wideband and narrowband systems.
In narrowband mode, Spirit NetJet guarantees quality of PSTN telephony or better (8 kHz sampling rate).
Moreover, it brings IP communication to the higher level by supporting 16kHz sampling rate in wideband mode.
The advanced version of the product has a dynamic jitter buffer adapting to network conditions and smoothing variations.
Focused on speech quality Spirit developed NetJet to minimize speech distortions and provide PSTN quality or better in wireless communication.
To overcome typical issues facing IP communication (i.e packet losses) NetJet has two components for eliminating transmission distortions.
Enhanced PLC hides transmission losses in audio systems where signals are encoded, packetized and transmitted over a network, while FEC technology recovers lost packets and minimizes lost information.
Adding extra information to the data stream allows to locate and correct errors in real-time as the data is being received.
This brings down the resultant link error rate to an acceptable level.
"Delivering PSTN or better speech quality at wireless communication is the point Spirit is focused at." - says Andrew Sviridenko, founding CEO of Spirit.
"In complex collaboration systems with a lot of users involved it's extremely important not to miss even a single sound.
It was impossible with usual VoIP systems due to packet losses.
Spirit NetJet handles the problem and makes life-like multipoint conferencing possible".
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