ml22120

 
 

Industry's first*! Acoustic Vehicle Alerting System (AVAS) exclusively equipped with playback sound adjustment function.Speech Synthesis LSI ML22120

* LAPIS Technology November 9, 2023 study

Lapistechology

Industry's first*! Acoustic Vehicle Alerting System (AVAS) exclusively equipped with playback sound adjustment function.

Speech Synthesis LSI ML22120

* LAPIS Technology November 9, 2023 study

Speech Synthesis LSI 「ML22120」Video  Acoustic Vehicle Alerting System (AVAS) exclusively equipped with playback sound adjustment function.

Speech Synthesis LSI「ML22120」Video

Speech Synthesis LSI「ML22120」Video

03:44  
Speech Synthesis LSI「ML22120」Video

Speech Synthesis LSI「ML22120」Video

03:44  

What is AVAS?  AVAS:Acoustic Vehicle Alerting System

What is AVAS?

In recent years, the electrification of cars has accelerated against the backdrop of carbon neutrality.
Because of the quiet motoring of these vehicles, pedestrians are increasingly unaware of approaching vehicles.As such, the installation of an AVAS is mandatory for safety reasons, and LAPIS's Speech Synthesis LSI(ML22120) is ideal for this AVAS.

Features of ML22120  ML22120 is equipped with pitch control and equalizer and is ideal for AVAS.

Feature 1Reduction of software development man-hours and costs

Guaranteed fast response and sound quality of sound Software development man-hours can be reduced

Hardware integration of the sound functions ensures quick response and sound quality of the vehicle approach alert sound even under heavy system load through simple command control.In addition, verification related to the playback of the sound of approaching vehicle alerts is no longer required, contributing to a reduction in man-hours and costs for software verification.

Feature 2Easy adjustment of vehicle approach warning sound

Example of pitch control

Pitch control (4 independent channels), volume control (4 independent channels), and frequency adjustment using a 5-band equalizer make it easy to adjust the vehicle approach warning sound without changing the sound source.

Example of adjustment due to changes in frequency response before and after vehicle mounting

Feature 3Sound data can be rewritten even after customer's product shipment

Rewriting audio data

[External flash memory] can rewrite sound data via the SPI i/F of the microcontroller.
Sound data can be rewritten in the field after the customer's product is shipped.

Applications Automotive

Charge complete sound
Door open/close sound
Alarm sound outside the car
xEV AVAS

Specifications Overview Speech Synthesis LSI for AVAS(External)

Product Names ML22120xx
Part Number ML22120TBZ0B-MX ML22120GPZ05B-MX
Operating voltage (V) 2.7 to 3.6
Operating frequency (MHz) 4.096, 4.000
Oscillator Built-in, External
perating temperature (°C) -40 to +105(+125*)
ROM capacity (bit) External maximum 128M
Number of phrases 64
Maximum playback time 17min
CPU I/F I2C, Clock synchronous serial
Mixing number (internal)(ch) 4
Other Pitch and volume control,
5band Equalizer,
Serial Audio Interface, Failure detection
PKG TQFP32 WQFN24
Online sales -

*Key-linked applications

Development support tool 

Sound device control kit "SDCK3"

This is a development tool that can perform everything from the creation of sound data to the writing of sound data into the voice synthesis LSI, to the trial listening.

Software

Speech LSI Utility

A tool to create sound data for speech synthesis LSI.
The created sound data can be simulated on a PC.

Wave Editor

A tool for editing the waveform of original sound data.

SDCB Controller

This is a tool for writing data to the Speech Synthesis LSI on the reference board via the following hardware SDCB3 and for listening."

Hardware

Sound Device Control Board "SDCB3"

This tool is to write data to the Speech Synthesis LSI on the reference board and to audition according to the operation of the SDCB Controller.
The reference board is replaceable and supports the Speech Synthesis LSI of the connected reference board.

Reference board(sold separately)

It is prepared according to each Speech Synthesis LSI.
Each board is equipped with a speaker jack, so you can easily listen to it just by connecting a speaker.
It can also be used when connected to your system board.

Possible to purchase online

Contact us  Please contact us here for purchasing LSIs and development tools, technical questions, etc.

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