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參數(shù)資料
| 型號： | HT817D0(20SOP) |
| 英文描述： | Speech Synthesizer |
| 中文描述： | 語音合成器 |
| 文件頁數(shù)： | 8/15頁 |
| 文件大小： | 207K |
| 代理商： | HT817D0(20SOP) |
HT817D0
8
March 15, 2000
Reset of KEY1 playing sequence
If a sub-group of KEY1is playing and one of
KEY2~KEY12 is triggered, the playing
sub-group will be terminated, and the newly
triggered key group come into play instead.
The first sub-group will start playing by
retriggeringKEY1.Inotherwords,theKEY1
playing sequence is reset whenever a key
otherthanKEY1istriggered(seeFigure1).
Sub-group selection
When KEY1 is triggered with pulses, a 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
after 2 pulses are input to KEY1, and so on.
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 key 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 hold mode or level-trigger
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.
Level trigger
When one of the 12 keys is pressed and held
down, the corresponding group will keep
playing. Once the pressed key is released,
the group will not stop till the included sec-
tions are all completed.
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相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HT817D0(24DIP) | Speech Synthesizer |
| HT817D0(24SOP) | Speech Synthesizer |
| HT817D0 | 16.8-Second LOG-PCM Speech |
| HT818D0(20DIP) | Speech Synthesizer |
| HT818D0(20SOP) | Speech Synthesizer |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HT818D0 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:22.4-Second LOG-PCM Speech |
| HT818D0(20DIP) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Speech Synthesizer |
| HT818D0(20SOP) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Speech Synthesizer |
| HT818D0(24DIP) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Speech Synthesizer |
| HT818D0(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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