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Digital Voice Recorders

Overview   Highlights   Block Diagrams   Advanced Features   Product Brochure  

DSP Group's D56k family of Integrated DSP Processors provides an ideal solution for the following applications:

  • Digital Voice Recorder - Low Cost DVR
  • Digital Voice Recorder with USB mass storage and MP3 player - Advanced DVR

    Integration of all the necessary functions for this application in a single device makes D56k processors definitely the best choice in the market. Complete application design sample available




    Overview   Highlights   Block Diagrams   Advanced Features   Product Brochure  

    • Complete solution: DSP Core with versatile software
    • Flexible control selection:
      • Internal Host - maskable customer specific, suitable for high volume production
      • External Host - generic, with external microcontroller, suitable for low to medium volume production
    • Integrated DC/DC converter for 2 cell battery operation
    • Integrated LCD controller with 6x30 or 4x32 configuration
    • Integrated USB 1.1 interface at full speed (Advanced DVR)
    • TRUESPEECH® TRIPLE RATE CODER® speech compression
      • Selectable Low, Medium and High Bit Rate
      • Up to 25 minutes of recording per each 4Mbit storage in Low Bit Rate mode
    • Storage devices: 4Mbit, 16Mbit and 64Mbit flash - built in support (Low Cost DVR)
    • Optional USB Mass Storage Class support (FAT File system) on NAND flash, MMC or SD cards (Advanced DVR)
    • MP3 Player at 16~320Kbps, 16~48Kbps; MPEG1 & MPEG2 Layers I and II (Advanced DVR)
    • Data Pump mode for flexible Flash Media support:
      • Bigger built-in flash devices
      • Removable proprietary and standard flash devices
    • Flexispeech® variable speed playback
    • PC executable for compression, editing and decompression off-line
    • Low power consumption
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  • Digital Voice Recorders


    Overview   Highlights   Block Diagrams   Advanced Features   Product Brochure  



    • Lowest cost single-chip DVR - Internal Host

    • Lowest cost single-chip DVR - External Host

    • Advanced DVR
      USB connection, Mass Storage Class and MP3 player - Internal Host

    • Advanced DVR
      USB connection, Mass Storage Class, MP3 Player - External Host


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    Digital Voice Recorders


    Overview   Highlights   Block Diagrams   Advanced Features   Product Brochure  

    • Voice Recognition
    • Background Noise Reduction
    • Speech Synthesis
    • Music Synthesis

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