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TC9444F Fiches technique(PDF) 1 Page - Toshiba Semiconductor

No de pièce TC9444F
Description  Single-Chip karaoke IC II
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Fabricant  TOSHIBA [Toshiba Semiconductor]
Site Internet  http://www.semicon.toshiba.co.jp/eng
Logo TOSHIBA - Toshiba Semiconductor

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TC9444F
2002-01-11
1
TOSHIBA CMOS Digital Integrated
Circuit Silicon Monolithic
TC9444F
Single-Chip karaoke IC II
The TC9444F is a karaoke chip for such applications as
equipment for CD/LD players, mini component stereo sets,
radio-cassette players, and VTRs.
With its internal AD/DA converter system, the TC9444F can
offer such karaoke functions as echo, vocal canceling, and key
control on a single chip in addition to such digital signal
processing (DSP) features as sound field control and bass/treble
control.
Because the program and coefficients are stored on internal
ROM, the IC can be controlled by simple settings.
Features
· Incorporates an AD converter (three channels) with 2 times oversampling.
THD: −65dB
S/N ratio: 80dB (typ.)
built-in pre-filter op-amp
· Incorporates a 1-bit Σ∆-type DA converter (two channels).
THD: −86dB
S/N ratio: 93dB (typ.)
built-in tertiary analog post filter
· Supports one port for digital input and one for digital output.
· Incorporates 64 Kbits of delay RAM
· Microcontroller interface: I2C bus mode as well as Toshiba’s original three-lead mode
· Built-in boot ROM initializes coefficients at reset or via a boot command.
[Compatible Software]
· Microphone echo: Variable delay time/level
· Vocal cancellation: Attenuates only vocals from standard source
· Vocal change: Vocals fade in/out depending on whether there is input from microphone
· Vocal key control: For chorus and duet functions
· Supports multi-sound sources: Various modes
· Pseudo stereo: Monaural sources enhanced by sense of spaciousness
· Key control: 14-step (max ±1 octave) stereo key control
· Compressor or bass boost: Compression ratio selectable in range 6 to 36dB.
Compression effect (amount of boost) can be varied smoothly.
· Sound field control: Uses delay RAM to simulate such acoustic environments as churches, halls, sports
stadiums, and discos.
· Equalizer: Characteristics switchable by coefficient or I/F bit settings
· 3D sound field: Offers 3-D sound.
Weight: 1.08 g (typ.)


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