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Analog-digital conversion model

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Analog-digital conversion model - Jeulin
  • • Analogue-digital (AD) and digital-analogue (DA) conversion
  • • Real world applications of sound
  • • Integrated memory
  • • Data used by datalogging tools or a memory oscilloscope
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Data sheet Analog-digital conversion model

Description

Based on a simple electrical signal, the student assesses the impact of 2 parameters that influence the conversion: the sampling frequency and the resolution.
A bar graph at the front of the device displays the binary word corresponding to the digitised information. Subsequently, the method is applied in a more practical manner to the sound.
An input jack allows a sound to be directly recorded (via a microphone or a music player). This sound can then be reproduced on a loudspeaker via a digital analogue conversion and listened to several times with different conversion parameters. In this way, it is possible to make the link with music compression formats like MP3.
Theme: human histology A/D - D/A conversions
Type of product Électricité, Physique-Chimie

Other Specifications

Resolution: 2, 4, 8 and 10 bits.
Sampling frequency: 1, 5, 10 and 20 kHz.
SRAM memory integrated.
Bar graph to display the binary word.
3.5 mm input jack or Ø 4 mm safety sockets.
Output Ø 4 mm safety sockets low impedance for 32 Ω headset.
Power supply: 12 V mains adapter supplied.

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