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參數(shù)資料
| 型號： | HT815D0(20DIP) |
| 英文描述： | Speech Synthesizer |
| 中文描述： | 語音合成器 |
| 文件頁數(shù)： | 8/15頁 |
| 文件大?。?/td> | 173K |
| 代理商： | HT815D0(20DIP) |
HT815D0
8
March 15, 2000
ThatKEY1functionsasarandomkeyisaspecial
case of sequential key, which combines a particu-
lar arrangement of sub-group playing sequence.
Reset of KEY1 playing sequence
If a sub-group of KEY1 group is being played
and one of KEY2~KEY12 is triggered, the
playing sub-group will be terminated, and
the newly triggered key group is played in-
stead. The first sub-group will start playing
by retriggering KEY1. In other words, the
KEY1 playing sequence is reset whenever a
keyotherthanKEY1istriggered(seeFigure
1).
Sub-group selection
When KEY1 is triggered with pulses, the de-
sired sub-group can be selected by controlling
its corresponding pulse number. However,
the features of KEY1 have to be set in the fol-
lowing ways:
–
sequential or random
–
retriggerable
–
minimum key debounce time
( 700 s, f
OSC
=96kHz)
For instance, if sub-group 1-3 is the previous
playinggroup,sub-group1-5willstartplaying
after2pulsesareappliedtoKEY1,andsoon.
To make easy selection of KEY1 sub-groups,
one of KEY2~KEY12 should be programmed
as silence. Then this silence key has to be
triggered to reset KEY1. By so doing, the
playing sub-group of KEY1 is directly speci-
fied by the pulse number applied to KEY1
(see Figure 2).
KEY12 as a stop key (by mask option)
When KEY12 functions as a stop key, any
voice output can be stopped by pressing
KEY12.
KEY1~KEY11 as a repeat key
KEY1~KEY11 all function as repeat keys if
one of the eleven keys is set as a repeat key. In
other words, once the mode of one of
KEY1~KEY11 is determined, the remaining
10 keys are set accordingly.
As a repeat key, the sections included can be
played sequentially and repeatedly till other
key input is triggered. KEY12 has no other
choice but functions as a stop key when
KEY1~KEY11 are set as repeat keys.
Key features
Key priority
When two or more keys are triggered simulta-
neously, the output voice is determined by the
key priority as shown below:
KEY1>KEY2>......KEY11>KEY12
Key debounce time
There are four kinds of key-in debounce time
that can be selected by mask option, namely,
700 s, 22ms, 45ms and 180ms. The key
debounce time varies with the value of the sys-
tem frequency.
Pull-high resistance
Four kinds of key input pin pull-high resis-
tance can be selected by mask option,
namely, 20k , 50k , 100k
The resistance may vary with VDD, tem-
peratures and the chip itself due to process
variations.
and 200k .
Trigger mode
All of the 12 keys can be optioned as one-shot
trigger mode, level-trigger mode or level hold
mode.
One shot
When one of the 12 keys (KEY1~KEY12) is
pressed momentarily or held down, the
group corresponding to that key will play
once.
/ &
/ &
&
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HT815D0(20SOP) | Speech Synthesizer |
| HT815D0(24DIP) | Speech Synthesizer |
| HT815D0(24SOP) | Speech Synthesizer |
| HT815D0 | 11.2-Second LOG-PCM Speech |
| HT817D0(20DIP) | Speech Synthesizer |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HT817D0 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:16.8-Second LOG-PCM Speech |
| HT817D0(20DIP) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Speech Synthesizer |
| HT817D0(20SOP) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Speech Synthesizer |
| HT817D0(24DIP) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Speech Synthesizer |
| HT817D0(24SOP) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Speech Synthesizer |
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