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參數(shù)資料
| 型號： | TDA7550R |
| 廠商： | 意法半導體 |
| 元件分類： | 數(shù)字信號處理 |
| 英文描述： | DIGITAL SIGNAL PROCESSING IC FOR SPEECH AND AUDIO APPLICATIONS |
| 中文描述： | 數(shù)字信號和音頻應用語音處理IC |
| 文件頁數(shù)： | 8/12頁 |
| 文件大小： | 118K |
| 代理商： | TDA7550R |
TDA7550
ASR311 Automatic Speech Recognition solution
The TDA-7550 is a single-chip solution for isolated word speech recognition, featuring the Lernout &
Hauspie ASR311 Automatic Speech Recognition engine.
Word base recognition
Isolated word recognition
The words database is created from an extensive set of recordings,
with an equal distribution of speakers; the recordings are partially
taken in automotive conditions at low, medium and high speed.
Quasi-connected digit recognition
Minimum pause between two numbers 150ms.
Noise-robust recognition
The recognition is still very robust even in high noisy environment (as
automotive or industrial environments)
Speaker-independent recognition
Recognition is affected by selected language, no training is required
Speaker-dependent recognition
User words can be stored and mixed with speaker-independent words
Training phase
User words can be trained by repeating three times the selected word.
Recognition is guaranteed when the same speaker is talking.
Prompts
Voice prompts can be stored on FLASH for creating a voice-based
user interface
Control through I
2
C
Management of the recognition engine, user words and voice prompts
is accomplished through an I
2
C protocol: the TDA7550 appears as a
slave I
2
C device.
Many languages available
Vocabularies in the following languages are available:
US English, French, German, Italian, Spanish, Japanese.
All the vocabularies have a common subset of about 150 words. Other
words and languages are available on request.
The external FLASH is used to store:
Speaker Independent vocabulary (4 KB/word)
User Words (4 KB/word)
Voice prompts (11 KB/sec)
Sample rate:
11.025 kHz
Recognition rate:
> 95%
Maximum number of active words:
30
Maximum number of words:
450
Word memory requirements:
4 KB (speaker-independent)
4 KB (speaker-dependent)
Prompt memory requirements:
11 KB/s
audio amp
spkr
mic preamp
T
T
D
D
A
A
7
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5
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5
0
0
F
F
L
L
A
A
S
S
H
H
b
b
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a
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k
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μ
C
slave I
2
C
EMI
ADC
DAC
Up to
4 MB
service request
Figure 1.
TDA7550R - TDA7550 - TDA7551 - TDA7552 - TDA7553
8/12
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TDA7551 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:DIGITAL SIGNAL PROCESSING IC FOR SPEECH AND AUDIO APPLICATIONS |
| TDA7552 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:DIGITAL SIGNAL PROCESSING IC FOR SPEECH AND AUDIO APPLICATIONS |
| TDA7553 | 功能描述:數(shù)字信號處理器和控制器 - DSP, DSC RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時器數(shù)量:3 設備每秒兆指令數(shù):50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風格:SMD/SMT |
| TDA7555 | 功能描述:音頻 DSP RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風格: 封裝 / 箱體: 封裝:Tube |
| TDA7556 | 功能描述:音頻 DSP RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風格: 封裝 / 箱體: 封裝:Tube |
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