CXD2720Q-2 Overview
The CXD2720Q-2 is a digital signal processor LSI for Karaoke, suitable for use in LD/CD/CD-G/video CD and the like. A large capacity DRAM and AD/DA converters are built in, and Karaoke functions such as key control and microphone echo are contained on a single chip.
CXD2720Q-2 Key Features
- 3-channel 1-bit AD converter and decimation filter S/N ratio: 88 dB THD + N: 0.016% Filter pass band ripple: less than ±
- 2-channel 1-bit DA converter and oversampling filter S/N ratio: 98dB THD + N: 0.006% Filter pass band ripple: less than
- In addition to analog input/output, 2-channel input/ 2-channel output of digital input/output are provided. The interfac
- 128K-bit DRAM for key control and microphone echo processing Functions
- Key controller pitch setting can be varied to a maximum of ±1 octave with a precision of 14 bits
- Two key controllers are provided. For their pitches, either of mon or independent setting is possible
- Key controller can be used for voice
- Microphone echo delay time can be varied to a maximum of 185ms (when fs = 44.1kHz)
- Voice parametric equalizer
- Mixing function to support sound multiplexing software