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AVT931 A
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  • AVT931 A
ID: 208742
DSPICODER - PRINTED PLATE
Retired
 

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DSPICODER - PRINTED PLATE
Producer: AVT

Digital speech transmission is widely used today in GSM telephony. The phones use specialized integrated circuits called codecs. They contain in their structure an AC, CA converter and a digital interface enabling data transfer. This type of arrangement was used in the dsPICordera. The signal from the electret microphone is sent to the microphone amplifier and then filtered. The next step is converting to a digital form.
The recorder is equipped with an LCD display from the Nolia 3310 mobile phone. Operating the device is possible with a few buttons

The device is especially useful for all who want to register speech and lovers of PIC processors

Selected parameters:

  • built-in electret microphone
  • storage medium - MMC / SD cards
  • SPI interface
  • automatic detection of the presence of the card
  • sampling resolution of 13 bits (compression up to 8 bits)
  • frequency of the registered signal up to 3.4 kHz
  • mute function
  • imaging of work status - LCD display
  • power supply - 5-6 Vdc
  • printed circuit board and documentation included
    A detailed description in EP 6/06

208742

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