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參數(shù)資料
| 型號： | GB3215 |
| 英文描述： | PARAGON? Digital SO3 PAL Configuration |
| 中文描述： | 榮光？三氧化硫PAL制式的數(shù)字配置 |
| 文件頁數(shù)： | 1/4頁 |
| 文件大?。?/td> | 413K |
| 代理商： | GB3215 |
PRELIMINARY DATA SHEET
G
Doc.No.11409 - 1 [Rev. October 2001]
1
FEATURES
4 channel WDRC processing
fully adjustable crossover frequencies
embedded
F
RONT
W
AVE
technology
AGC Detector in each channel with adjustable time
constants (Single or Twin Detector)
flexible WDRC I/O curve adjustment (channel
independent)
wideband gain adjustment with external VC option
notch filter (variable centre and width) and dynamic depth
(gain dependent)
soft squelch (low level expansion) with variable threshold
and variable time constants
low cut filter
high cut filter
AGCo (variable threshold and time constants)
digital peak clipping option
low battery indicator
tone generator (programmable level and frequency)
4 memories with full configuration storage
DESCRIPTION
The GB3210-S01 Product Abstraction Layer (PAL) in
combination with the GB3210 provides an advanced, four
channel Wide Dynamic Range Compression (WDRC) DSP
system with embedded
F
RONT
W
AVE
capability. A highly
configurable digital signal processor enables extremely
versatile fitting with independent channel compression
characteristics, including five parameter
adjustment and variable AGC time constants. All
programmable parameters, including the three crossover
frequencies, have generous adjustment ranges and
excellent resolution. Each channel contains independent
AGC control with Gennum's proven Twin Detector
approach.
I/O
curve
F
RONT
W
AVE
enables the efficient addition of multi-
microphone directionality with exceptional flexibility. A wide
range of polar patterns are possible and can be
programmed in the field after a simple calibration
procedure is performed on the complete hearing aid by the
manufacturer. Different polar patterns can be programmed
and can be changed as required within each memory. Full
microphone compensation capability eliminates the need
for matched microphones.
Advanced features include low-level expansion (squelch), a
fully programmable notch filter with optional gain
dependent operation, and a pure tone generator enabling
in situ audiometry.
GB3210 provides industry leading performance with an
input dynamic range of 95dB, total system time delay of
less than 2ms and low current consumption (below 900μA
including
transducers
in
applications).
most
single
microphone
BLOCK DIAGRAM
A/D
70nF
70nF
LC FILTER
TWIN
DETECTOR
BAND
SPLIT
FILTER
GB3210-S01
NOTCH
FILTER
CHANNEL
PROCESSING
TWIN DETECTORS
CHANNEL
PROCESSING
TWIN DETECTORS
CHANNEL
PROCESSING
TWIN DETECTORS
CHANNEL
PROCESSING
TWIN DETECTORS
FRONTWAVE
HC FILTER
OUT-
OUT+
FRONTWAVE
A/D
FMIC
RMIC
GB3210
Σ
14
1
9
6
D/A
HBRIDGE
TONE
GENERATOR
SQUELCH
PEAK
CLIPPING
AGC-O
PARAGON
DIGITAL
GB3210-SO1 PAL Configuration
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