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Related Manuals for Digital Voice Systems VC-55-PR
Summary of Contents for Digital Voice Systems VC-55-PR
- Page 1 Digital Voice Systems, Inc. The Speech Compression Specialists Preliminary VC-55™-PR Voice Codec Board User’s Manual Version 1.0 November 2005...
- Page 2 Digital Voice Systems, Incorporated. Every effort has been made to ensure the accuracy of this manual. However, Digital Voice Systems, Inc. makes no warranties with respect to the documentation and disclaims any implied warranties of merchantability and fitness for a particular purpose.
- Page 3 END USER has requested a license, and any derivative works thereof, including modifications, enhancements and extensions made by or for Digital Voice Systems, Inc. (DVSI) and including circuit diagrams, timing diagrams, programmable logic software, logic diagrams, layouts, operating instructions and user manuals.
- Page 4 12.0 Notices Any notices to DVSI which may be given hereunder shall be sent in writing to: Digital Voice Systems Inc., 234 Littleton Road, Westford, MA, 01886 USA Information – Section Page ii...
- Page 5 3. Follow Instructions - All operating and use instructions should be followed. Storage To insure maximum shelf life in long term storage, VC-55-PR Vocoder board should be kept in an a static shield, moisture controlled package at <40°C and <90% Relative Humidity Installation Ventilation - The VC-55™- PR Vocoder Board unit should be situated so that its location or position...
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Page 7: Table Of Contents
VC-55™ PR Voice Codec Board (Preliminary) User’s Manual Section 1 I NTRODUCTION ENERAL NFORMATION Section 2 I NSTALLATION PERATION VERVIEW VC-55™- PR V Connecting DC Power ...5 Analog Audio I/O ...6 Handset...6 USB Port ...6 Connecting two Boards together via UART ...6 Connecting the UART Serial Connection to another device ...7... - Page 8 VC-55™ PR Voice Codec Board (Preliminary) User’s Manual 10 RS-232 S ABLE ERIAL List of Figures IGURE LOCK IAGRAM 2 VC-55™- PR V IGURE OCODER IGURE OWER NPUT IGURE ONNECTING TWO 5 OEM C IGURE ONNECTORS 6 ... 14 IGURE DVSI Confidential Proprietary ...
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Page 9: Section 1 Introduction
User’s Manual Introduction General Information The Digital Voice Systems, Inc. (DVSI) VC-55™- PR Vocoder Board is a single channel full-duplex real- time voice processing board. The VC-55™-PR Vocoder Board implements DVSI’s proprietary Advanced Multi-Band Excitation™ voice coding algorithm software. The VC-55™- PR Vocoder Board is a full-duplex real-time voice compression solution that is ideally... - Page 10 VC-55™ PR Voice Codec Board (Preliminary) User’s Manual under all tested conditions. These superior performance characteristics make the enhanced vocoders ideal for use in any digital communication application where bandwidth is at a premium and high quality voice is imperative.
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Page 11: Section 2 Installation
Section 2 – Installation (Preliminary) User’s Manual Installation Digital Voice Systems, Inc. The Speech Compression Specialists Operation Overview The VC-55™-PR vocoder board uses an on-board A/D converter to digitize the analog speech input. The digitized speech is then encoded by the DVSI voice compression algorithm into a 7200 bps or 3600 bps serial data bit stream which includes FEC. -
Page 12: Block Diagram
VC-55™ PR Voice Codec Board (Preliminary) User’s Manual Block Diagram Connector Boot Config Flash Header RS-232 RS-232 Channel Transceiver RJ45 Analog In Stereo Jack Analog Out Stereo Jack HandSet RJ11 Ext 5V Power Mux Connector Figure 1 Block Diagram To meet a wide variety of communication system requirements the VC-55™- PR Vocoder Board contains two analog interfaces for real-time speech input and output and an USB interface for set-up and control from a PC. -
Page 13: P Anel C Onnectors
VC-55™ PR Voice Codec Board (Preliminary) User’s Manual Power RS-232 Digital I/O Figure 2 VC-55™- PR Vocoder Board Top Item Name Serial Port USB* Analog Line In Analog Line Out Handset DC Line In Table 2 Top Panel Connectors Connecting DC Power The user must supply the VC-55™-PR Vocoder Board with a 5 V digital power supply There are no user... -
Page 14: S Together
VC-55™ PR Voice Codec Board (Preliminary) User’s Manual Analog Audio I/O A typical analog audio input connection for the VC-55™- PR Vocoder Board would be to connect the audio Line out output of an audio component, a Digital Tape, player or even a PC sound card output to the Analog Input jack (audio cables not included). -
Page 15: Uart Port Serial
VC-55™ PR Voice Codec Board (Preliminary) User’s Manual Connecting the UART Serial Connection to another device Bits per second: Table 3 UART Serial Port Settings DVSI Confidential Proprietary Serial Port Settings 115,200 Data bits: Parity: None Stop bits: Flow control: None Section 2 –... -
Page 16: Section 3 Setup & Control
Step 8 Now use the utility wdreg to install WinDriver's kernel module on the computer by typing the following: wdreg -inf windrvr6.inf install the response will be DVSI Confidential Proprietary Section 3 – Set-up & Control Digital Voice Systems, Inc. The Speech Compression Specialists Page 8... -
Page 17: Installing Usb Driver Inf Files On Windows 98/Me
VC-55™ PR Voice Codec Board (Preliminary) User’s Manual install: completed successfully Step 9 Next install the DSP inf file by typing the following: wdreg -inf c5509a.inf install the response will be install: completed successfully Step 10 Next install the software inf file type wdreg -inf vc55r10.inf install... -
Page 18: Running The Vc-55™ Vocoder Board Program Vc55Param.exe
VC-55™ PR Voice Codec Board (Preliminary) User’s Manual Follow the instructions of the Upgrade Device Driver Wizard that opens. When asked, point to the location of the INF file in your distribution package. Once the drivers and inf files are install the VC-55™ Vocoder Board can be connected to the PC via USB. - Page 19 VC-55™ PR Voice Codec Board (Preliminary) User’s Manual Chan_Rx_Min_Time Chan_Rx_Max_Time Vocoder Options Vocoder Rate Encoder_Mode_Pin_Enable Side_Tone EncodeCmode DVSI Confidential Proprietary quality audio output. Jitter Buffer Minimum time This time is adjustable to compensate for jitter on the channel interface. The minimum buffer time Between can be set between 0 and 636 ms.
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Page 20: Running The Program
VC-55™ PR Voice Codec Board (Preliminary) User’s Manual Audio Options Analog Voice Input Source Table 4 vc55param variables Notes: 1) Changes to EncodeModePinEnable, EncodeMode, SlipMode, ChanRxMinTime, and ChanRxMaxTime take effect the next frame. 2) Changes to EncodeSource, EncodeCmode, SideTone, ChannelUartRate require Flash and reset to take effect. -
Page 21: Vc-55™ -Pr Vocoder Board Status
VC-55™ PR Voice Codec Board (Preliminary) User’s Manual Encode_Mode Slip_Mode EncodeCmode Chan_Rx_Min_Time Chan_Rx_Max_Time Encode_Source Channel_Uart_Rate Sync_Err_Rate Lost_Sync_Rate Lost_Packets Dropped_Packets DecodeErrRate Table 5 vc55param output to screen Executing the vc55param program without setting any of the parameter options will result in a print to screen of all the current settings information stored in the VC-55™... -
Page 22: Figure
VC-55™ PR Voice Codec Board (Preliminary) User’s Manual Figure 5 The LED D2 on the VC-55™-PR Vocoder Board indicates power is ON. The VC-55™-PR Vocoder Board is synch’d with another VC-55™-PR Vocoder Board when LED D12 is active.. In this condition the unit is ready to process data through the encoder or decoder. -
Page 23: Section 4 Channel Interface
… x x x x x x x x 72-79 … … Last Byte when running Full-Rate Mode Section 4 – Interface Protocol Digital Voice Systems, Inc. The Speech Compression Specialists Hex Value 0x56 0x0F or 0xF0 0xXX … …... -
Page 24: Rate Element
VC-55™ PR Voice Codec Board (Preliminary) User’s Manual rate Byte 1 is used to set the rate information of the data in the packet. The AMBE APCO PROJECT 25 coder runs in either one of two rates as shown in Table 7 Vocoder Rate . -
Page 25: Able 9 Rs-232 Serial Port Pin Out
1.41 Volts RMS 10 kOhms nominal 20 Hz to 4 kHz (up to 48 kHz. available) 16 bits 8 kHz (up to 96kHz. available) 81 dB Section 6 – Support Digital Voice Systems, Inc. The Speech Compression Specialists Page 17... -
Page 26: Usb Connection
VC-55™ PR Voice Codec Board (Preliminary) User’s Manual Line Out Type: Connector: Maximum Output Level Output Impedance: Bandwidth: A/D Resolution: SNR (Non-Weighted) A/D Sampling Rate: Minimum Load Handset: Type: Connector: Bandwidth: A/D Sampling Rate: A/D Resolution: Pin Number 1 and 2... -
Page 27: Mechanical
VC-55™ PR Voice Codec Board (Preliminary) User’s Manual DC Power Input Voltage Input Current Mechanical Mechanical Weight Size (W X D X H) DVSI Confidential Proprietary 5 Volts or 3.3 Volts DC 250 ma @ 5V / 3.3 VDC 1.2 oz. (with connectors installed) 3.1875"X 2.1875"... -
Page 28: Section 6 Support
(Preliminary) User’s Manual Support DVSI Technical Support If you have any problems with the VC-55™- PR Vocoder Board Voice Codec Board or have questions about its operation, please contact: Digital Voice Systems, Inc. 234 Littleton Road Westford, MA 01886 USA... -
Page 29: History Of Revisions
History of Revisions Revision Date of Revision Description Pages Number Page 21 DVSI Confidential Proprietary... - Page 30 NOTES Page 22 DVSI Confidential Proprietary...
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