General Description
The HT8970 is an echo/surround effect processor. It is designed for various audio systems including karaoke, television, sound equipments, etc. The chip consists of a built-in pre-amplifier, VCO or Voltage Control OSC, 20Kb SRAM, A/D and D/A converters as well as delay time control logic.

FEATUREs
Operating voltage: 4.5V~5.5V
ADM algorithm
Low noise
   Echo mode:-85dB
   Surround mode:-90dB
Low distortion rate
   Echo mode: 1%
   Surround mode: 0.2%
Built-in 20Kb SRAM
Automatic reset function
Package type: 16-pin DIP/SOP

APPLICATIONs
Television
Karaoke systems
Video disc player
Sound equipments