AK7750 Datasheet, PDF (3/77 Pages) Asahi Kasei Microsystems – Audio DSP with Built-in Hands-Free Phone Features

[ASAHI KASEI]
[AK7750]
(1) Hands-Free Mode Diagram
Block Diagram
Speaker
D/A
DSP Block
Echo
Canceller
VAD
Filter
Tel. Line
Digital
OUT(8ch)
Digital
IN(8ch)
µP
I/F
Ctrl.
VAD
D/A
voice
SW
Filter
iFFT
Spectrum
FFT
Subtraction
Noise Canceller
I/F
ARM Processor
Filter
+
RAM
ROM
PLL
EEPROM
(2) Audio Surround Mode Diagram
Block Diagram
Speaker
D/A
DSP Block
Sound processing
(EQ,Surround,…)
A/D
Tel. Line
A/D
Mic.
A/D
Audio_in
Speaker
Digital
OUT(6(8))ch)
Digital
IN(8(10))ch)
µP
I/F
D/A
voice
SW
I/F
A/D
Audio_in
ROM
RAM
PLL
VAD
iFFT
Spectrum
Subtraction
FFT
Noise Canceller
ARM Processor
OFF
Block Diagram
EEPROM
[MS0296-E-00]
3
2005/03