msm6679a-110 Oki Semiconductor, msm6679a-110 Datasheet - Page 3

• Manufacturer Part Number: msm6679a-110
• Description: Si/sd Voice Recognizer, Recorder/player, And Speech Synthesizer
• Manufacturer: Oki Semiconductor

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MSM6679A-110 VRP
SI/SD Voice Recognizer, Recorder/Player, and Speech Synthesizer
DESCRIPTION
The MSM6679A-110 Voice Recognition Processor (VRP) is a slave-mode device that performs
five functions: speaker-independent (SI) voice recognition, speaker-dependent (SD) voice
recognition, solid-state sound recording, sound playback, and speech synthesis. The highly
integrated device also provides an on-chip memory controller, Flash memory interface, analog
data conversion, Oki speech synthesizer interface, and pulse width modulation (PWM) sound
output.
For SI recognition, the MSM6679A-110 contains a vocabulary template in external memory.
Pretrained SI vocabularies eliminate the need for laborious training, as usually required by SD
products. The memory requirements are dependent on the size of the vocabulary. The MSM6679A-
110 can tolerate background noise, while providing high recognition accuracy. In its designated
operating environment, the device achieves a typical recognition accuracy of >95% (using an
Oki-defined test procedure).
For SD recognition, the MSM6679A-110 stores SD vocabulary templates, as defined by the user,
in external SRAM. The MSM6679A-110 can create SD vocabularies of up to 61 words each, with
each word using approximately 50 bytes.
In addition to providing voice recognition capabilities, the MSM6679A-110 integrates a solid-
state recorder/player, speech synthesis functions, and a tone generator. ADPCM recording/
playback provides high quality sound and efficient memory utilization. The MSM6679A-110 can
respond to spoken commands, verbally or with tones, via an on-chip speech synthesizer and tone
generator. For larger speech-synthesis requirements, the MSM6679A-110 also provides a glueless
MSM665x control interface for off-chip speech synthesis.
The MSM6679A-110 can interface to any application or personal computer via a parallel or serial
interface through an open, device-independent serial mode API (SMAPI). To accelerate code
development, Oki supplies an evaluation kit, and assembly and C language programs for this
product.
FEATURES
• SI recognition
• SD recognition
• Speech synthesis
- Up to 20 - 25 words in each vocabulary
- Multiple vocabulary support
- Up to 61 words in each vocabulary
- Multiple vocabulary support
- Up to 2.3-sec internal and 27.6-sec external
- On-chip controller for MSM665x speech
- Standard beep tone outputs
speech synthesis on-chip; sample looping
and concatenation allows even longer
phrases.
synthesizer
MSM6679A-110 Voice Recognition Processor
• Speech capture and playback
• Serial ASCII command interface
• 6944-Hz audio input sample rate for record
• 10-kHz sample rate for voice recognition
• 200-msec recognition latency
• Flexible memory mapping for EPROM,
• 32-MHz operation
• Packages: 84-pin PLCC (QFJ84-P-S115) or
- Pulse code modualation (PCM) and
- 28-kbps ADPCM speech compression
andplayback
FLASH, and SRAM
100-pin TQFP (TQFP100-P-1414-0.50-K)
adaptive
modualation (ADPCM) voice or sound-
effect output
differential
pulse
code
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