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參數(shù)資料
| 型號： | HT85048 |
| 廠商： | Holtek Semiconductor Inc. |
| 英文描述： | Green Voice |
| 中文描述： | 綠色之聲 |
| 文件頁數(shù)： | 5/11頁 |
| 文件大?。?/td> | 160K |
| 代理商： | HT85048 |
HT85XXX
5
August 24, 2000
Functional Description
The Green Voice series is a series of program-
mable speech synthesizers and melody genera-
tors. It provides various sampling rates and
beats, tone levels, tempos for speech synthe-
sizer and melody generator. For voice synthe-
sizer, the Green Voice provides 8-bit PCM, 6-bit
-law PCM and 4-bit ADPCM synthesis. In
HT85XXX series, a mixed output of two chan-
nels PCM synthesis is allowed but only one
channel ADPCM synthesis is allowed. For mel-
ody generator, the Green Voice supports a tone
melody and PCM melody generator and two
channels mixed output for the whole series.
The Green Voice series build-in 8 programma-
ble I/O pins and 4 programmable input pins
along with powerful user s command. The
user s instructions are employed to develop
new and customized functions for a wide vari-
ety of innovative applications.
Speech and melody analysis
The speech and melody sources of the Green
Voice can be recorded and edited from the PC
sound card and media tools. Holtek s CAD tools
first load a speech source file as .WAV or .PCM
format, then transfer the speech file as PCM,
LOG-PCM or ADPCM format, and finally save
it to the internal mask ROM by changing a
layer of the mask. The PCM format generates a
higher sound quality whereas the ADPCM for-
mat brings about a longer recording capacity.
The melody source can either be in the .MID or
in the .MLD format.
The .MID file is the standard format of the win-
dows media tools. The .MLD file is a text for-
mat. After the .MID file is compiled, the .MLD
file is automatically generated.
The Green Voice can support the following com-
pression format of the voice .WAV and .PCM
file: AD4, PCM8, -law PCM.
Current type D/A output
The HT85XXX series supply high accuracy cur-
rent type D/Aoutput pins for audio output. The
output volume is changeable from 0 to 15 digi-
tal levels by writing a value to the VOLUME
registers. The D/A pins are PMOS open drain
structure and ouput synthesized signals for
driving a speaker through an external NPN
transistor when the chip is active. However, it
becomes floating when the chip is in the
standby state. An 8050 type transistor with
h
FE
=150 is recommended for the output driver
of the D/A output pin.
Melody/Tone generator
The HT85XXX family has a built-in mel-
ody/tone generator. The generator can generate
13 different kinds of melody beats, 5 octaves of
tone level, 18 tempos, and 2 channels mixed
output. Of these components, the melody tempo
is changeable and generates sound effects by
writing a control value to the TEMPO register.
The chip provides the following 18 tempos, 13
beats, and 5 octaves for user s programming.
18 tempos (Beats/Min.)
68
78
82
93
100
105
109
114
119
125
132
139
147
156
179
192
227
310
13 beats
1
24
12
,
1
1
8
1
6
1
4
1
3
1
2
2
3
3
4
14
,
3
3
2
2
, , ,
, , , ,
,
, ,
5 octaves
C1~B1, C2~B2, C3~B3, C4~B4, C5~B5
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HT85072 | Green Voice |
| HT85096 | Green Voice |
| HT85XXX | Green Voice |
| HT86030 | Voice Synthesizer 8-Bit MCU |
| HT86030_06 | Voice Synthesizer 8-Bit MCU |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HT85072 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:Green Voice |
| HT85096 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:Green Voice |
| HT850UPS | 功能描述:UPS - 不間斷電源 Standby 1-line device modem/fax RoHS:否 制造商:Phoenix Contact 功率額定值: 輸出電壓額定值:24 V 出口數(shù)量:2 運行時間（滿載）: 運行時間（半載）: |
| HT8514 | 制造商:MOLEX 制造商全稱:Molex Electronics Ltd. 功能描述:Insertion Tool |
| HT85144 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Industrial Control IC |
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