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參數(shù)資料
| 型號： | VP-1608F |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Digital Voice Processor |
| 中文描述： | 數(shù)字語音處理器 |
| 文件頁數(shù)： | 1/7頁 |
| 文件大?。?/td> | 966K |
| 代理商： | VP-1608F |
Eletech Electronics, Inc.
16025 Kaplan Avenue
Industry, CA 91744, U.S.A.
Tel: (626) 333-6394 Fax: (626) 333-6494
Eletech Enterprise Co., Ltd.
531-3F Chung-Cheng Road
Hsin Tien, Taipei Hsien, Taiwan
Tel:+886 2-2218-0068 Fax:+886 2-2218-0254
w w w . e l e t e c h . c o m
FE A
T UR E S
!
Plays messages stored in external EPROM chips
!
CVSD technique with adjustable sampling rate from
16K to 128K bps for different voice quality
!
Dual-channel audio output
!
Up to 64 segments per channel
!
Built-in RC oscillator or use external clock
V P-1608F
Digital Voic e Proc essor
!
Direct EPROM addressing up to 8M bits
!
Low power, single voltage operation
!
Microprocessor interface
!
Low-cost VP-880 system available for quick and easy
voice development
GENERAL DES CRIPT IONS
The VP-1608F is a CMOS voice processor chip based on
the CVSD (Continuously Variable Slope Delta) modulation
technique. The VP-1608F is exactly the same as the (now
obsolete) VP-1608 except that it is packaged in 64-pin QFP
instead of 68-pin PLCC.
Note that although the dual channel output provided by
the VP-1608F can be used as a stereo output, it will be
hard to do so since the VP-880 Voice Development System
does not allow voice digitization in stereo mode.
Therefore the dual channel output is usually used in appli-
cations where sound synchronization is not critical. For
example, in a game equipment, channel A can be playing
a continuous background sound while channel B plays short
sound effects based on the player’s action.
The dual channel output is available on two separate out-
put pins. They can be used independently, or mixed to-
gether externally. Each channel may control up to 64 sound
segments stored in 4 different EPROM banks, with up to
16 segments in each bank.
Each segment stored in the EPROM is represented by a
unique binary code: 2 bits for the bank code and 4 bits for
the segment code. A valid code plus a strobe signal are all
it takes to activate a certain segment.
The VP-1608F can operate in a wide range of sampling
rates (from 16 to 128 Kbps). A higher sampling rate usu-
ally produces better sound quality at the expense of higher
memory cost. As a rule of thumb, start with 32 Kbps. A
1M EPROM can store 32 seconds of sound at this rate.
Thanks to the chip’s high internal integration, very little
external components are required to build a VP-1608F
based design. The VP-880 Voice Development System is
available for quick and easy in-house voice development.
APPLICAT IONS
!
Dual channel, multiple message playback
!
Sound effects generator
!
Digital announcer for consumer, industrial, security and
telecommunication products
V P-1608F (QFP44) Pin Assignment
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