參數(shù)資料
型號(hào)： PS9702B
廠商： Electronic Theatre Controls, Inc.
英文描述： 6Ch, 24bit, 192kHz Digital Audio Processor for Full Digital Amplifier
中文描述： 6通道，24位，192kHz的數(shù)字音頻處理器的全數(shù)字放大器
文件頁(yè)數(shù)： 31/41頁(yè)
文件大?。?/td> 505K
代理商： PS9702B
PULSUS
PS9702B
Copyright 2000-2003, Pulsus Technologies Inc
.
31
2003 REV1.2
Register Name
Address
Word
Length
Description
Coefficient for Tone Control Filter Registers
BASS_LPF_A1
0xE8
3 Bytes
-A1 coefficient for Bass Low pass filter.
The filter is a 1
st
order filter. A0 coefficient is fixed at value 1.
H(z) = (B0 + B1
·
z
-1
) / (1 + A1
·
z
-1
)
Sampling Frequency of the filter is 192KHz.
3.21 format (3 bits for the integer part and 21 bits for the fractional part).
Default = 0x1FCA6E (200Hz Low pass filter)
BASS_LPF_B0
0xE9
3 Bytes
B0 coefficient for Bass Low pass filter.
B1 coefficient is equal to B0.
3.21 format (3 bits for the integer part and 21 bits for the fractional part).
Default = 0x001AC8 (200Hz Low pass filter)
TREBLE_HPF_A1
0xEA
3 Bytes
-A1 coefficient for Treble High pass filter.
The filter is a 1
st
order filter. A0 coefficient is fixed at value 1.
H(z) = (B0 + B1
·
z
-1
) / (1 + A1
·
z
-1
)
Sampling Frequency of the filter is 192KHz.
3.21 format (3 bits for the integer part and 21 bits for the fractional part).
Default = 0x1A462C (6KHz High pass filter)
*
* Above default value is not device default value. It is recommended default value.
The PS9702B has erroneous default values of treble filter coefficient registers.
In real device, 0xEA register has “
0x1D2316”
default value and 0xEB register has
“
0x1A462C”
default value.
If one wants to use the treble function, 0xEA and 0xEB register must be initialized
as the above recommended values.
TREBLE_HPF_B0
0xEB
3 Bytes
B0 coefficient for Treble High pass filter.
B1 coefficient is equal to -B0.
3.21 format (3 bits for the integer part and 21 bits for the fractional part).
Default = 0x1D2316 (6KHz High pass filter)
*
* Above default value is not device default value. It is recommended default value.
The PS9702B has erroneous default values of treble filter coefficient registers.
In real device, 0xEA register has “
0x1D2316”
default value and 0xEB register has
“
0x1A462C”
default value.
If one wants to use the treble function, 0xEA and 0xEB register must be initialized
as the above recommended values.
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