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參數(shù)資料
| 型號(hào)： | BA3884 |
| 廠商： | Rohm CO.,LTD. |
| 英文描述： | High-definition sound processor |
| 中文描述： | 高清晰度聲音處理器 |
| 文件頁數(shù)： | 5/9頁 |
| 文件大?。?/td> | 113K |
| 代理商： | BA3884 |
432
Audio ICs
BA3884F / BA3884S
Amplitude compensation (harmonic compensation)
To maintain appropriate auditory balance for the treble
region that is made up of harmonic components, a high-
speed detector and high-performance VCA circuit are
used for amplitude control of the treble component. The
amount of compensation is determined from a calcula-
tion performed based on the DC level input to the CTL1
pin, and the DC level detected from the input signal. The
internal control signal obtained from this calculation com-
pensates the amplitude of the treble component input to
the VCA. This amplitude compensation recovers the har-
monic component, and improves the reproduction clarity
(definition level) of instruments and vocals.
Bass boost
To maintain good balance with the dynamically changing
treble component it is possible to boost the bass compo-
nent. The amount of bass boost is determined by the DC
level applied to CTL2.
Mode switch
The DC voltage on the CTL pin can be used to switch the
IC between processing mode and bypass mode. When
processing mode is selected, the audio signal is en-
hanced using the compensation circuits described above
before being output. When bypass mode is selected, the
signal bypasses all of the compensation circuits, and
only passes through a buffer amplifier before output.
External components
The frequency characteristic in processing mode with
maximum definition level and maximum bass boost is
given below.
As indicated in the diagram, capacitors C1 and C2 deter-
mine the treble component cutoff frequency. By varying
the values of these components, the frequency charac-
teristic can be changed as indicated by the dotted line in
the diagram. This varies the balance of the harmonic
component, and is an important factor in determining the
tone quality.
C1 : External capacitor connected
between the VCA and MIX pins
(0.068
μ
F in the application
circuit).
C2 : External capacitor connected
between the OUT and MIX pins
(470pF in the application
circuit).
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| BA3884F | 制造商:ROHM 制造商全稱:Rohm 功能描述:High-definition sound processor |
| BA3884F-E2 | 功能描述:IC PROC HI DEFINITION SOP24 TR RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻處理 系列:- 其它有關(guān)文件:STA321 View All Specifications 標(biāo)準(zhǔn)包裝:1 系列:Sound Terminal™ 類型:音頻處理器 應(yīng)用:數(shù)字音頻 安裝類型:表面貼裝 封裝/外殼:64-LQFP 裸露焊盤 供應(yīng)商設(shè)備封裝:64-LQFP EP（10x10） 包裝:Digi-Reel® 其它名稱:497-11050-6 |
| BA3884S | 功能描述:IC PROCESSOR HI DEFINITIN SDIP24 RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻處理 系列:- 其它有關(guān)文件:STA321 View All Specifications 標(biāo)準(zhǔn)包裝:1 系列:Sound Terminal™ 類型:音頻處理器 應(yīng)用:數(shù)字音頻 安裝類型:表面貼裝 封裝/外殼:64-LQFP 裸露焊盤 供應(yīng)商設(shè)備封裝:64-LQFP EP（10x10） 包裝:Digi-Reel® 其它名稱:497-11050-6 |
| BA3888 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| BA3888S | 制造商:ROHM 制造商全稱:Rohm 功能描述:High-definition sound processor |
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