DVSI’s hardware products provide high-quality, low data-rate, voice compression solutions that are available off-the-shelf and require no up-front licensing fees or royalties. All hardware products incorporate DVSI's patented AMBE+2™ Voice Compression Algorithm and can operate at virtually any data rate from 2.0 to 9.6 kbps. With this high degree of flexibility, speech and FEC rates can be optimized to provide excellent voice quality with superior robustness to bit errors and acoustic background noise. All products offer number of advanced features, including error correction, DTMF tones, echo cancellation, scalable data rates, soft- decision coding and voice activation/noise insertion.
DVSI’s line of hardware products is designed so that original equipment manufacturers can cost effectively integrate DVSI’s AMBE+2™ vocoder technology into production of low-volume, high-performance communication equipment that is affordable and inexpensive to operate.
A recent investigation has found that one or more companies based outside the United States are producing and distributing unauthorized copies of several DVSI vocoder products in clear violation of DVSI’s intellectual property rights. Specifically, pirated copies of DVSI’s AMBE-1000™, AMBE-2000™ and AMBE-3000™ vocoder chips are being manufactured and sold by Indusic - also known as Nanjing Wutong Microelectronics Technology Co., Ltd., a company based in the People’s Republic of China. Such pirated vocoder chips sold by Indusic, or others, are not licensed under any of DVSI’s intellectual property rights. In addition, they are not authorized, warranted or supported by DVSI, and they may not be meet the same quality, performance and interoperability specifications as authentic DVSI products. DVSI views purchasers of unlicensed products such as those offered by Indusic to be contributing to the infringement of DVSI’s intellectual property rights, and DVSI intends to hold all parties accountable as part of DVSI’s commitment to protect its intellectual property.
In order to avoid legal ramifications and to assure that all vocoder products meet the highest levels of quality, performance and interoperability, DVSI recommends purchasing only fully authorized and licensed vocoder products exclusively from DVSI or an authorized source. Furthermore, DVSI strongly recommends against purchasing any pirated vocoder products including those from Indusic (aka Nanjing Wutong Microelectronics Technology Co., Ltd.) or its affiliates. Indusic is not licensed by DVSI and has no right to sub-license, authorize, sell, produce or distribute any DVSI vocoder technology including hardware and/or software products.
Digital Voice Systems, Inc. (DVSI), is the sole owner and developer of the AMBE®, AMBE+™ and AMBE+2™ vocoder technology and associated hardware and software products, including those presented on this website and elsewhere. DVSI holds extensive intellectual property rights including patent rights, copyrights, trademarks and trade secrets in its AMBE®, AMBE+™ and AMBE+2™ vocoder technology and products.
The unauthorized reproduction or distribution of a copyrighted work is illegal. Criminal copyright infringement, including infringement without monetary gain, is investigated by the FBI and is punishable by fines and federal imprisonment.
AMBE-4020™ Vocoder Chips are NOW back in-stock!
DVSI's patented AMBE® voice compression software has been proven to outperform CELP, RELP, VSELP, MELP, ECELP, MP-MLQ, LPC-10, and other competitive technologies.
The AMBE® voice compression algorithm's low complexity allows it to be fully integrated into low cost, low power integrated circuits. DVSI's vocoder chips provide a high degree of flexibility in selecting the speech and FEC (Forward Error Correction) data rates. The vocoder chips maintain natural voice quality and speech intelligibility at rates from 2.0 kbps to 9.6 kbps. DVSI's Vocoder Chips are used in applications throughout the world, including digital mobile radio and other wireless communication systems.
The Digital Voice Systems, Inc. (DVSI) USB-3000™ is the perfect combination of the AMBE-3000™ Vocoder Chip with a USB interface. Connect the USB-3000™ to a Windows-based PC's USB interface and get direct access to DVSI's AMBE-3000™ Vocoder Chip.
Hardware Development kits are available as a comprehensive, evaluation, test and development platform that helps product designers and manufacturing engineers gain experience with DVSI's AMBE-4020™ or AMBE-3000™ vocoder chips.
The Net-2000™ (VCU) incorporates DVSI's voice compression technology to bridge analog speech I/O to an Ethernet network. There are various versions of the Net-2000™-VCU that support a variety of vocoders used in voice compression digital communication systems.