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參數(shù)資料
| 型號： | HT8955A |
| 廠商： | Holtek Semiconductor Inc. |
| 英文描述： | Voice Echo |
| 中文描述： | 語音回聲 |
| 文件頁數(shù)： | 1/7頁 |
| 文件大?。?/td> | 589K |
| 代理商： | HT8955A |
HT8955A
Voice Echo
Pin Assignment
Block Diagram
Features
Operating voltage: 5.0V
Long delay time
–
0.8 seconds (SE L=VSS, 256K DRAM)
–
0.2 seconds (SE L=VDD/open, 64K DRAM)
25kHz sampling rate
Continuous variable delay time
Built-in pre-amplifier
Low distortion
High S/N ratio
Wide frequency response
PCM 10-bit A/D and D/A converters
24-pin DIP package
Applications
Mixers
K araoke systems
E cho generators
Sound effect generators
General Description
The HT8955A is a CMOS L SI digital audio
signal delay processor. It is designed for
audio system applications including echo
generators, karaoke systems, sound effect
generators, etc.
The chip consists of a built-in pre-amplifier,
on-chip oscillator, DRAM interface, 10-bit A/D
and D/A converters as well as control logic. It
provides continuously adjustable delay time up
to 0.8/0.2 seconds at a sampling rate of 25kHz
when combined with an external DRAM
(41256/4164). The HT8955A is superior to a
conventional BBD delay unit in its low distor-
tion, high S/N ratio and long delay time. Its
sophisticated low pass filter will not end in the
normal applications due to the high sampling
rate (25~50kHz). Hence, the HT8955A is excel-
lent for audio delay system applications. It is
offered in a 24-pin dual-in-line package.
1
5th May ’98
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相關(guān)代理商/技術(shù)參數(shù) |
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| HT8960 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Consumer IC |
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| HT8972 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:Voice Echo |
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