參數(shù)資料
型號(hào)： MSP3425G
廠商： Electronic Theatre Controls, Inc.
英文描述： MSP 34x5G Multistandard Sound Processor Family
中文描述： 中型34x5G多標(biāo)準(zhǔn)聲音處理器系列
文件頁(yè)數(shù)： 12/98頁(yè)
文件大?。?/td> 1541K
代理商： MSP3425G
MSP 34x5G
PRELIMINARY DATA SHEET
12
Micronas
2.3. Preprocessing for SCART and
I
2
S Input Signals
The SCART and I
2
S inputs need only be adjusted in
level by means of the SCART and I
2
S prescale regis-
ters.
2.4. Source Selection and Output Channel Matrix
The Source Selector makes it possible to distribute all
source signals (one of the demodulator source chan-
nels or SCART) to the desired output channels (loud-
speaker, etc.). All input and output signals can be pro-
cessed simultaneously. Each source channel is
identified by a unique source address.
For each output channel, the sound mode can be set
to sound A, sound B, stereo, or mono by means of the
output channel matrix.
If Automatic Sound Select is on, the output channel
matrix can stay fixed to stereo (transparent) for demod-
ulated signals.
2.5. Audio Baseband Processing
2.5.1. Automatic Volume Correction (AVC)
Different sound sources (e.g. terrestrial channels, SAT
channels, or SCART) fairly often do not have the same
volume level. Advertisements during movies usually
have a higher volume level than the movie itself. This
results in annoying volume changes. The AVC solves
this problem by equalizing the volume level.
To prevent clipping, the AVC
’
s gain decreases quickly
in dynamic boost conditions. To suppress oscillation
effects, the gain increases rather slowly for low level
inputs. The decay time is programmable by means of
the AVC register (see page 30).
For input signals ranging from
24 dBr to 0 dBr, the
AVC maintains a fixed output level of
18 dBr. Fig. 2
–
4
shows the AVC output level versus its input level. For
prescale and volume registers set to 0 dB, a level of
0 dBr corresponds to full scale input/output. This is
–
SCART input/output 0 dBr = 2.0 V
rms
–
Loudspeaker output 0 dBr = 1.4 V
rms
Fig. 2
–
4:
Simplified AVC characteristics
2.5.2. Loudspeaker Outputs
The following baseband features are implemented in
the loudspeaker output channels: bass/treble, loud-
ness, balance, and volume. A square wave beeper can
be added to the loudspeaker channel.
2.5.3. Quasi-Peak Detector
The quasi-peak readout register can be used to read
out the quasi-peak level of any input source. The fea-
ture is based on following filter time constants:
attack time: 1.3 ms
decay time: 37 ms
30
24
18
12
6
input level
18
24
output level
[dBr]
0
[dBr]
相關(guān)PDF資料
PDF描述
MSP3435G MSP 34x5G Multistandard Sound Processor Family
MSP3445G MSP 34x5G Multistandard Sound Processor Family
MSP34X5G MSP 34x5G Multistandard Sound Processor Family
MSP3430 Multistandard Sound Processor Family
MSP34X1G Multistandard Sound Processor Family with Virtual Dolby Surround
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MSP3425GB8V3 制造商:MICRONAS 功能描述:
MSP3427G 制造商:MICRONAS 制造商全稱:MICRONAS 功能描述:Multistandard Sound Processor Family
MSP3430 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Multistandard Sound Processor Family
MSP3430G-A4 制造商:Micronas 功能描述:
MSP3430G-QA-A4 制造商:MICR 功能描述:3430G-QA-A4
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*