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Digital Voice Recorders
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
- 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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