LC83025 Description
EN4977A CMOS LSI LC83025E Digital Signal Processor for Karaoke Products Overview The LC83025E is a special-purpose karaoke DSP that implements the signal processing required by karaoke systems, including pitch shift, microphone echo, voice muting and simple surround, with only a single 256Kb external DRAM. Since the LC83025E includes built-in A/D and D/A converters, it can also handle analog inputs and outputs in...
LC83025 Applications
- Pitch shift The LC83025E can shift the music pitch or the microphone pitch by ±15 steps in 1/4 interval steps, or ±1 octave in scale tone steps according to man
- Microphone echo The LC83025E implements echo processing for the signal input from the microphone A/D converter. The amount of echo, the delay time and other par
- Voice mute The LC83025E implements processing that removes monaural signal ponents included in the music signal. This allows CDs with vocals to be used as karao
- Simple surround The LC83025E implements a simple surround function by adding delayed ponents to the music signal. The LC83025E includes six sets of simple surro