 |
поискавой системы для электроныых деталей |
|
|
поискавой системы для электроныых деталей |
|
HT85048 датащи(PDF) 5 Page - Holtek Semiconductor Inc |
|
|
|||||||||||||||||||||||||||||
HT85048 датащи(HTML) 5 Page - Holtek Semiconductor Inc |
|
|
5 / 11 page  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 m-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, m-law PCM. Current type D/A output The HT85XXX series supply high accuracy cur- rent type D/A output 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 hFE=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 1 12 1 8 1 6 1 4 1 3 1 2 2 3 3 4 1 4 3 3 2 2 , , ,, ,, ,, , , ,, · 5 octaves C1~B1, C2~B2, C3~B3, C4~B4, C5~B5 |
|
|
ссылки URL |
| Вашему бизинису помогли Аллдатащит? [ DONATE ] |
Что такое Аллдатащит | реклама | контакт | Конфиденциальность | Ссылка на техническое описание | обмен ссыками | поиск по производителю All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
Russian ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
