AMBE+2 Vocoder Promises High Voice Quality at Low (2.0 to 9.6 Kbps) Data Rates. The company can also provide hardware development kits (HDK) based either on AMBE-3000 or AMBE-4020 AMBE+2 chip, USB based products from a single channel dongle to a the 12 full-duplex channel USB-3012 product, as well as Net-2000 VCUs (Voice Connect Unit). While the AMBE vocoder is. The software is currently able to run on Windows, Fedora Linux and OSX. Installation is straightforward and menu. This would be an amount of data of 128000 bits per second. Not suitable to be sent via a 4800 bps radio connection. The AMBE3000 Vocoder makes of 128000 bps a digital signal of 3600 bps.

DVstick30 The DVMEGA DVstick30 is the successor to the DVMEGA AMBE. The DVMEGA AMBE remains available because it has the possibility to convert analogue audio directly into AMBE data without the intervention of other hardware.

The DVstick 30 is the perfect combination of the AMBE-3000™ vocoder and USB interface. Using BlueDV and the DVstick30 you can make a QSO without a radio.

All you need is a Windows PC with soundcard, microphone, speaker and a DVMEGA DVstick 30. The communication speed can be set by means of hardware configuration. This makes the DVstick 30 extremely flexible and backwards compatible with existing software such as Dummy Repeater and AMBE server. Technical data – USB 2.0 Full Speed compatible.

– UART speed, configuration via Hardware, 28K8 – 460K8 – USB port powered. – DVSI’s full duplexAMBE+2™ Voice coder. – Data rates of 2.0 kbps to 9.6 kbps in 50 bps increments. – Variable FEC Rates 50 bps to 7.2 kbps.

– Vocoder configuration via configuration packets. – Compatible with, BlueDV, AMBE server, Dummy repeater etc.d. Instructions DVstick33 The DVMEGA DVstick33 is based on the AMBE3003. DVstick33 can do 3 channels transcoding for XLX systems. AMBE 3000 shield DVMEGA AMBE3000 shield fits on top of an Arduino MEGA. This board is equiped with a AMBE3000 Vocoder and PCM3500 Codec. The PCM3500 converts the analog microphone signal into a digital stream (PCM).

And that, conversely, the digital PCM stream is converted back into an analog audio signal. The digital PCM format is 8Khz with a depth of 16 bits. This would be an amount of data of 128000 bits per second.

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Not suitable to be sent via a 4800 bps radio connection. The AMBE3000 Vocoder makes of 128000 bps a digital signal of 3600 bps. This is the voice information and error correction codes. These error correction codes make it possible to restore a signal which arrives corrupted at the receiver station up to a certain level. Block diagram.

We have now shipped over 300 PiDV™, and the ThumbDV™ will soon pass it for units delivered. There are currently 200 more units in process., our local assembly house in Renton WA, does a great job on their SMT line which includes automated optical inspection or AOI. We physically tested all of the first 100 units and found 1 failure, which was attributed to a bad AMBE3000 IC, probably due to hot plugging the board during test. At this point we stopped functional testing and now rely on AOI to flag any assembly issues for operator inspection or remedy.

We have had one working unit returned as suspect but it turned out to be a failed R-Pi and the PiDV™ was returned to service with no charge to the customer. I want to thank Chad, Paul, Brian and all of the people at Out of the Box for their hi-quality and reasonable cost assembly services. Bryan – K7UDR Statement of Origin: The PiDV™ and ThumbDV™ are assembled in the USA by Out of the Box from globally manufactured components obtained thru Dig-Key and Mouser. The PCB Fabs are made in China. Because the ThumbDV™ attaches to a computer using USB, it is clearly a “Computer Peripheral” as defined by the FCC and is required to meet the Part 15 Subpart B standard for conducted and radiated emissions. We sent a sample unit to Nemko-CCL, an accredited test lab in Utah, and they performed testing to the following standards: • EU: EN5022:2010 • USA: FCC Part 15, Subpart B • CAN: ICES-003, Issue 5 • AUS/NZL: CISPR 22:2009 After passing all tests, a Declaration of Conformity was issued by Nemko-CCL and as of today all units are shipped with a sticker on the back.

“DVSI’s AMBE-2020™ and AMBE-3000™ Vocoder chips, are both DSTAR compatible. ICOM originally introduced the DSTAR system based on the AMBE-2020™ Vocoder chip that utilizes DVSI’s AMBE+ technology. Since that time, DVSI has developed and produced the AMBE-3000™ Vocoder chip that implements DVSI’s latest generation AMBE+2 technology and is fully interoperable with the the AMBE-2020™ vocoder chip used for DSTAR. The enhancements of AMBE+2™ technology in the AMBE-3000™ vocoder chip can provide superior voice quality in some circumstances. The highest level of voice quality can be achieved when the AMBE-3000™ Vocoder chip (or equivalent software 2) is incorporated into the equipment used on both ends of the radio link.” So the answer is a definite maybe. 1 The DV Dongle is manufactured by Internet Labs. 2 Current ICOM D-STAR products use a software vocoder that incorporates the 3000 advancements.