- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄384301 > GA3218 (Gennum Corporation) Venture-TM Digital DSP System PDF資料下載
參數(shù)資料
| 型號： | GA3218 |
| 廠商： | Gennum Corporation |
| 英文描述： | Venture-TM Digital DSP System |
| 中文描述： | 創(chuàng)業(yè)- TM數(shù)字DSP系統(tǒng) |
| 文件頁數(shù)： | 13/24頁 |
| 文件大小： | 261K |
| 代理商： | GA3218 |
GA3219 / GA3218 / GA3217 Preliminary Data Sheet
Proprietary and Confidential
32718 - 2
February 2005
13 of 24
7.6 Channel Processing
Figure 7-2
represents the I/O characteristic of independent AGC channel
processing. The I/O curve can be divided into four main regions:
low input level expansion (squelch) region
low input level linear region
compression region
high input level linear region (return to linear)
Figure 7-2: Independent Channel I/O Curve Flexibility
The I/O characteristic of the channel processing can be adjusted in six ways:
To ensure that the I/O characteristics are continuous it is necessary to limit
adjustment to a maximum of four of the available five parameters. During
Parameter Map creation it is necessary to select four parameters as user
adjustable (or fixed) and allow one parameter to be calculated.
squelch threshold (SQUELCHTH)
low level gain (LLGAIN)
lower threshold (LTH)
high level gain (HLGAIN)
upper threshold (UTH)
compression ratio (CR)
The squelch region within each channel implements a low level noise reduction
scheme (1:2 or 1:3 expansion ratio) for listener comfort. This scheme operates in
low levels.
The number of compression channels is programmable in ARKonline and can be
1, 2 or 4.
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
O
INPUT LEVEL (dBV)
Low Level
Gain
Lower
Threshold
Compression
Ratio
High Level
Gain
Upper
Threshold
Squelch
Threshold
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| GA3219 | Venture-TM Digital DSP System |
| GA3220 | Programmable Signal Processing Platform for Hearing Instruments |
| GA3222 | Advanta-TM ADRO-TM - Enabled DSP System |
| GA3224 | PARAGON-TM DIGITAL Two Channel DSP System |
| GA3225 | PARAGON⑩ DIGITAL Four Channel DSP System with FRONTWAVE |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| GA3219 | 制造商:GENNUM 制造商全稱:GENNUM 功能描述:Venture-TM Digital DSP System |
| GA3220 | 制造商:GENNUM 制造商全稱:GENNUM 功能描述:Programmable Signal Processing Platform for Hearing Instruments |
| GA3222 | 制造商:GENNUM 制造商全稱:GENNUM 功能描述:Advanta-TM ADRO-TM - Enabled DSP System |
| GA3224 | 制造商:GENNUM 制造商全稱:GENNUM 功能描述:PARAGON-TM DIGITAL Two Channel DSP System |
| GA3225 | 制造商:GENNUM 制造商全稱:GENNUM 功能描述:PARAGON⑩ DIGITAL Four Channel DSP System with FRONTWAVE |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。