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| 型號(hào)： | QX2010 |
| 文件頁(yè)數(shù)： | 2/7頁(yè) |
| 文件大?。?/td> | 78K |
| 代理商： | QX2010 |
QX2010 QXpander Processor
Device Specifications
Ref: 2010V253.DOC
Rev: 2.53
QX2010 Data Sheet -- Preliminary -- Confidential
QSound Labs, Inc.
Date: 97.01.29
Page 2 of 7
Principles of Operation.
In ordinary stereo systems, the stereo image
is formed between the left and right
speakers, and is confined by the speaker
positions (i.e., the "sound stage" is located
between the two speakers). The QXpander
is designed to form the stereo image beyond
the speakers, thus enlarging the "sound
stage".
If the center channel is defined as the
monaural or common component of the left
and right channels, then Figure 3 shows the
spatial response of the QXpander
when
operating, and for normal stereo bypass.
Figure 3: QXpander
Spatial Response
The QXpander
enhancements can be
disabled using the BYP bypass control pin,
allowing the unchanged stereo signal to pass
through to the outputs. The BYP control pin
requires V
CC
and 0 VDC as logic levels 1
and 0 respectively (see
Table 1
).
BYP
(GND)
(2.4 ~ V
CC
)
MODE
0
1
Bypass - Normal Stereo
QXpanded Audio
Table 1: Mode Selection
Normally, the QXpander
is used in the
preamplifier stage between the stereo source
and the amplifier stages used to drive the
speakers. Figure 4 shows the functional
elements of the QX2010.
Spatial
Enhancement
Stereo In
L
R
L
R
Stereo Out
Stereo
Switch
BYP
Pre Amp
Power Amp
Figure 4: QXpander
Simplified Block Diagram
QSound applications engineers can assist
customers in integrating the QX2010 into
their application designs.
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