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參數(shù)資料
| 型號(hào)： | STV8227 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Digital Audio Decoder/Processor for A2 and NICAM Television/Video Recorders |
| 中文描述： | 數(shù)字音頻解碼器/處理器為A2和麗音電視/錄像機(jī) |
| 文件頁(yè)數(shù)： | 24/149頁(yè) |
| 文件大小： | 2775K |
| 代理商： | STV8227 |
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Dedicated Digital Signal Processor (DSP)
STV82x7
24/149
4
Dedicated Digital Signal Processor (DSP)
A dedicated Digital Signal Processor (DSP) takes charge of all audio processing features and the
low frequency signal processing features of the demodulator. The internal 24-bit architecture will
ensure a high quality signal treatment and an excellent dynamic.
4.1
Back-end Processing
The “back-end” processing corresponds to the low frequency signal processing (32 kHz or higher
frequencies) of the demodulator and other inputs (I2S, ADC).
Figure 11
shows a flowchart of the back-end processing tasks. However, the figure shows that the
processing is only a SINGLE SOURCE PROCESSING flow (no processing is possible with
“Demod + SCART” and I2S inputs simultaneously) and that the selection of a headphone output
restricts the loudspeakers configuration to 2+1 instead of 5+1.
Figure 11: Back-end Audio Processing
DC
D
FM Channel1
FM Channel2
NICAM L
De-emphasis
Prescale
Dematrix
Autostandard
FM
FM
FM
Removal
Prescale
I2S
I2S in 1
I2S in 2
I2S in 3
DC
Prescale
NICAM
Removal
DC
Prescale
SCART
Removal
NICAM R
Dematrix
NICAM
SCART L
SCART R
SRC X2/X4
“I2S” Input Mode
“Demod + SCART” or “SCART only” Input Modes
D
LS
2
HP
2
SCART
2
LS
2 to 6
HP
2
SCART
2
S
S
(L and R)
(L and R)
(L and R)
(L,R,C,LFE,Ls,Rs)
(L and R)
(L and R)
De-emphasis
NICAM
S
S
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| STV8227T | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Digital Audio Decoder/Processor for A2 and NICAM Television/Video Recorders |
| STV8230 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:TV/Video Signal Processor |
| STV8236 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Multistandard TV Audio Processor and Digital Sound Demodulator |
| STV8237 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Digital Audio Decoder/Processor for A2 and NICAM Television/Video Recorders |
| STV8237T | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Digital Audio Decoder/Processor for A2 and NICAM Television/Video Recorders |
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