CXD2720Q
CXD2720Q is Single-Chip Digital Signal Processor for Karaoke manufactured by Sony Semiconductor Solutions.
Single-Chip Digital Signal Processor for Karaoke
Description The CXD2720Q 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, microphone echo and voice canceling are contained on a single chip. Features
- 3-channel 1-bit AD converter and decimation filter S/N ratio: 88 d B THD + N: 0.016% Filter pass band ripple: less than ±0.5d B Filter stop band attenuation: less than
- 41d B (all characteristics are typical values)
- 2-channel 1-bit DA converter and oversampling filter S/N ratio: 98d B THD + N: 0.006% Filter pass band ripple: less than ±0.2d B Filter stop band attenuation: less than
- 41d B (all characteristics are typical values)
- In addition to analog input/output, 2-channel input/ 2-channel output of digital input/output are provided. The interface also supports a variety of formats.
- 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
- Microphone echo delay time can be varied to a maximum of 185ms (when Fs = 44.1k Hz)
- Voice canceller supports settings other than center by the panpot volume
- Voice parametric equalizer
- Voice pitch shifter
- Mixing function to support sound multiplexing software
- Digital de-emphasis function 100 pin QFP (Plastic)
Structure Silicon gate CMOS Applications Equipment having Karaoke function, such as LD/CD, pact music center, video games, etc....
