- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄378678 > MSM6650Family (OKI SEMICONDUCTOR CO., LTD.) Voice Synthesis IC,(話音合成芯片) PDF資料下載
參數(shù)資料
| 型號： | MSM6650Family |
| 廠商： | OKI SEMICONDUCTOR CO., LTD. |
| 英文描述： | Voice Synthesis IC,(話音合成芯片) |
| 中文描述： | 語音合成芯片，（話音合成芯片） |
| 文件頁數(shù)： | 32/124頁 |
| 文件大小： | 694K |
| 代理商： | MSM6650FAMILY |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁當(dāng)前第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁第113頁第114頁第115頁第116頁第117頁第118頁第119頁第120頁第121頁第122頁第123頁第124頁
32/124
Semiconductor
MSM6650 Family
9.2 PCM Method
The PCM method of the MSM6650 family uses an 8-bit straight binary format. Of the three methods,
PCM is best suited to accurate reproduction of sound effects or waveforms which are pulse shaped
or change rapidly (such as high frequency pure tone sine-waves).
9.3 Melody Playback Method
The AR761 and AR762 development tools support melody regeneration system. The melody
data can be composed by using these tools. Therefore, unique sound can be created.
9.4 Data Rate of Each Method
The data rate shows the degree of data compression and the data amount to synthesize for 1
second. The data rate is determined by the relationship between the sampling frequency and the
format (number of bits per sample). The following formula is used.
Data rate (kbps) = Sampling frequency (kHz)
￥
Number of bits per sample
The data rate of the three methods are compared below when the sampling frequency is 6.4 kHz.
1) ADPCM Method
Data Rate (kbps) = 6.4 (kHz)
￥
4 (bit) = 25.6 (kbps)
2) PCM Method
Data Rate (kbps) = 6.4 (kHz)
￥
8 (bit) = 51.2 (kbps)
3) Melody Playback Method
With the melody playback method, the data rate changes depend on the tempo or the kind of note
(
) used. The formula does not determine the data rate changes. The
average data rate is 8 kbps.
The data rate of the melody playback method is calculated as follows:
Data rate = number of notes per second
￥
data amount per note [kbits]
For example, to obtain data rate from the following conditions,
f
SAM
= 6.4 kHz
Number of notes per second = 1
Time [seconds] taken for each thirty-second note = 0.083 sec (Tempo = 90)
first, obtain the data amount per note with the following expression:
Data amount per note [kbits] = data amount per thirty-second note [bits per note]
￥
2
= Time taken for each thirty-second
note [sec]
￥
fsam [Hz]
￥
8 [bits]
￥
2
= 0.083
￥
6400
￥
8
￥
2
8.5 [kbits]
=
Therefore, when the number of notes per second is 1, the data rate is approximately 8.5 kbps.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MSM6665-xx | DOT MATRIX LCD CONTROLLER WITH 17-DOT COMMON DRIVER AND 80-DOT SEGMENT DRIVER |
| MSM6679A-110 | Voice Synthesiser(SI/SD話音識別,記錄/播放,語音合成器) |
| MSM7524 | DTMF Transceiver(雙音多頻收發(fā)器) |
| MSM7547 | Voice Signal Level Control LSI(音頻信號電平控制LSI) |
| MSM80C86A-10 | 16-Bit CMOS Microprocessor(全靜態(tài)設(shè)計(jì),最高工作頻率10MHz,數(shù)據(jù)、地址復(fù)用,16位微處理器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MSM6650GS-BK | 制造商:ROHM Semiconductor 功能描述: |
| MSM6652 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:SI/SD Voice Recognizer, Recorder/Player, and Speech Synthesizer |
| MSM6652A | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:Internal Mask ROM Voice Synthesis IC, Internal One-Time-Programmable OTP ROM Voice Synthesis IC, External ROM Drive Voice Synthesis IC |
| MSM6653 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:SI/SD Voice Recognizer, Recorder/Player, and Speech Synthesizer |
| MSM6653A | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:Internal Mask ROM Voice Synthesis IC, Internal One-Time-Programmable OTP ROM Voice Synthesis IC, External ROM Drive Voice Synthesis IC |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。