TDA7552

TTS3000 Text-To-Speech solution

The TDA7551 is part of a two-chip solution for Text-To-Speech, featuring the Lernout & Hauspie

TTS3000 engine. Two devices are needed:

• A 16-bit microcontroller (ST10) for string analysis and conversion

• The TDA7552 DSP for voice synthesis.

An external application sends ASCII strings to the microcontroller, which perform an analysis of the entire

sentence; language-dependent data is needed on the FLASH accessed by the ST10. As a result of the

analysis, a data stream is sent through I

DSP. The software running on the TDA7552 DSP is independent from languages.

Control through I

Management of the DSP is accomplished through an I

TDA7552 appears as a slave i

Many languages available

The following languages are available:

US English, French, German, Italian, Spanish, Japanese. Other

languages available on request.

Sample rate:

11.025 kHz

audio amp

T

2

F

H

b

k

I

S

0

m

language-independent code

language-

dependent

code

ASCII string

Figure 3.

TDA7550R - TDA7550 - TDA7551 - TDA7552 - TDA7553

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