BU9408KS2_12 Datasheet, PDF (31/57 Pages) Rohm – 32bit Audio DSP with Built-in 4ch DAC and ASRC

BU9408KS2
Technical Note
4-11. P²Bass (Perfect Pure Bass: Deep Bass Equalizer)
It is the deep bass equalizer making it possible that even thin-screen TV, by which the enclosure of speaker is restricted,
can reproduce the real sound close to powerful deep bass & original sound.
Solid & clear deep bass with little feeling of distortion is realized. Even boosting of bass does not interfere with vocal band,
therefore rich and natural deep band is realized.
Gain
ON/OFF of P²Bass function
Default = 0
Select Address
&h73 [ 7 ]
P²²B_Bass _ゲga_イin_ン
V_ボo_ーca_カl b_ルa_帯nd_域
f
L^PFカ^Cッ^utト^ofオ^{f f}フ^re周^qu波^en数^cy
H_HP_PF_FカCu_ッto_トf_オf fr_フeq_周ue_波nc_数y
Value
0
1
Operational explanation
Not using of P²Bass function
Using of P²Bass function
Setting of P²Bass smooth transition time
Default = 0
Select Address
&h73 [ 3:2 ]
Value
0
1
2
3
21.4ms
10.7ms
5.4ms
2.7ms
Operational explanation
P²Bass smooth transition control
Default = 0
Select Address
&h77 [ 1:0 ]
Value
0
1
2
Operational explanation
P²Bass smooth transition stop
Setting of the values into Coefficient RAM for P²Bass smooth transition
P²Bass smooth transition start
What is necessary is the time of waiting, which is more than the time selected by the setting of P²Bass smooth transition
time, from the time the P²Bass smooth transition start (&h77[1:0] = “2”) is executed until the following command is sent.
Please make sure to perform the P²Bass smooth transition stop (&h77[1:0] = “0”) after the smooth transition is
completed.
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2012.03 - Rev.A