RC8660 Datasheet, PDF (1/49 Pages) List of Unclassifed Manufacturers – CMOS, 3.3 Volt / 5 Volt Voice Synthesizer Chipset

RC SYSTEMS
DoubleTalk RC8660
CMOS, 3.3 Volt / 5 Volt
Voice Synthesizer Chipset
RC8660 VOICE SYNTHESIZER
General Description
The RC8660 is a versatile voice and sound synthesizer, integrating a
text-to-speech (TTS) processor, audio recording and playback, musical
and sinusoidal tone generators, telephone dialer and A/D converter,
into an easy to use chipset. Using a standard serial or eight bit bus
interface, virtually any ASCII text can be streamed to the RC8660 for
automatic conversion into speech by the TTS processor. The audio re-
cord and playback modes augment the TTS processor for applications
requiring very high voice quality and a relatively small, fixed vocabulary,
applications requiring special sounds or sound effects, and/or the re-
cording of voice memos. The audio output is delivered in both analog
and digital PCM audio formats, which can be used to drive a speaker
or digital audio stream.
The RC8660’s integrated TTS processor incorporates RC Systems’
DoubleTalk™ TTS technology, which is based on a unique voice con-
catenation technique using real human voice samples. The DoubleTalk
TTS processor also gives the user unprecedented real-time control of
the speech signal, including pitch, volume, tone, speed, expression,
articulation, and so on.
Up to 3.5 MB of nonvolatile memory is included in the RC8660 for the
storage of up to 15 minutes of recorded messages and sound effects. A
programmable “greeting” message can be stored that is automatically
played whenever the RC8660 is powered up, allowing a custom mes-
sage to be played or the RC8660’s default settings to be reconfigured.
A user-programmable dictionary allows the pronunciation of virtually
any character string to be redefined, or even trigger the playback of
tones, pre-recorded messages and sounds based on specific input
patterns. All of these features can be programmed and updated via a
standard serial port, even in the field after the RC8660 has been inte-
grated into the end-product.
The RC8660 is comprised of two surface-mounted devices. Both op-
erate from a +3.3 V or +5 V supply and consume very little power.
Most applications require only the addition of a lowpass filter/audio
power amplifier to implement a fully functional system.
RC8660 Functional Block Diagram
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DoubleTalk RC8660 User’s Manual Rev 1.2
Revised 10/22/04

© 2004 RC Systems, Incorporated