Source: voip-tech.blogspot.com
The new version of SoliCall, released the last August, implement the new service of acoustic echo cancellation, I also remind that this is a excellent software for the recording of audio calls, SoliCall is a free software for private use.
Download at this page
Source: snapvoip.blogspot.com
NoiseFree VoIP has just launched a fresh all-software solution to those often noisy VoIP calls. Skype, Yahoo Messenger with Voice, and Google Talk are great ways to save money on long distance, but if you’re calling anywhere near civilization, you’re bound to get interference. A noisy line can undo the advantage of free Internet calls.
Until December 31, 2007, NoiseFree VoIP is offering a free beta of its noise-canceling software to registered users. The Repoter tested it at CTIA and was impressed with the demo. There was noticeable improvement in call quality when I toggled the software on and off, though the background buzz in the busy room didn’t and couldn’t have faded completely.
“Our software easily installs and when used at both ends of a call completely removes the challenges presented by uncontrollable environmental noise. Additionally, NoiseFree VoIP is able to reduce the packet load on a network, mitigating instances of voice distortion due to impacted network nodes. By doing so it enhances overall bandwidth availability.”
Unlike traditional commercial noise cancellation solutions (including those used in applications such as audio conferencing, stereo and hi-fidelity sound reinforcement and avionics), Noise Free products provide, receive and transmit noise cancellation and require no additional hardware devices, DSP chips, or other costly additions to support laptop or VoIP handset usage.
NoiseFree VoIP Features:
NoiseFree VoIP supports a wide variety of VoIP Software and Services including: Skype™, Yahoo Messenger™, Google Talk™ and soft phones. It has been tested and is compatible with Windows™ XP and Vista.
You also can check out some demos here.
And if you want you can download it here.
Source: snapvoip.blogspot.com
Digium, the Asterisk® Company, announced at Astricon, a new Hardware module and a Software-based High Performance Echo Cancellation Solution for carrier-class voice networks to improve audio quality and reduce VoIP infrastructure costs.
For Asterisk users that connect to the PSTN, the most common type of echo is hybrid echo - the echo introduced by the impedance mismatch between 2-wire and 4-wire telephone circuits. The echo manifests as a distorted and delayed reflection of the users voice while in conversation with an external party through the PSTN.
The new Digium High Performance Echo Cancellation (HPEC) solutions eliminate the need for the tuning and training sometimes required to control echo conditions in Asterisk-based voice systems. The HPEC is G.168 compliant and "toll-quality" as determined by AT&T’s Voice Quality Assessment Labs using a stringent series of subjective and standardized, objective tests. The Digium HPEC outperformed AT&T’s benchmark lab echo cancellers in all testing categories.
"As Asterisk continues its rapid rate of deployment on a wide range of telephone equipment from vendors around the world, Digium is committed to delivering our customers the absolute best quality possible," said Mark Spencer, CTO of Digium. "Digium’s new high performance echo cancellation solutions once again set the industry standard for open source, carrier-class voice networks."
Asterisk offers a strategic, highly cost-effective approach to voice transport over IP, TDM, switched and Ethernet architectures. Digium’s offerings include VoIP, conferencing, voicemail, legacy PBX, IVR, auto attendant, media servers and gateways, and application servers and gateways.
Pricing and Availability
Digium’s HPEC hardware module solution retails for $235 USD for up to 32 channels. Digium’s HPEC software is available at no cost to in-warranty Digium analog interface customers, and available for $10 USD per channel to non-Digium customers. Availability is immediate.
