ROHM presents Speech Synthesis IC for ADAS and AVAS

Automotive grade Speech Synthesis with Sound Continuity Detection

Willich-Münchheide, Germany, July 23rd, 2020 – ROHM Group Company LAPIS Semiconductor Co., Ltd. announces the automotive speech synthesis ICs, ML2253x series, optimized for audible notifications and sound effects in ADAS (Advanced Driver Assistance System) and AVAS (Acoustic Vehicle Alerting System). (Fig. 1) The ML2253x Speech Synthesis ICs provide an innovative technology as well as features for higher safety, increased flexibility on application level, thus reducing overall system costs and simplifying the hardware and software design. “ROHM is embracing the growing market and increased safety demand by the auto makers for reliable voice and sound generation systems,” says Stefan Drouzas, Senior Application Marketing Manager at ROHM Semiconductor GmbH. Utilizing a state of the art compression method (HQ-ADPCM), the ML2253x series provides superior audio playback with reduced memory usage for storing audio data. (Fig. 2) The integrated Sound Continuity Detection re-digitizes the analog speaker output signal and compares it with the playback data stored in the internal or external memory. The main MCU receives a feedback in case the data is exceeding a predefined value e.g. in case of skipping. In addition, a number of essential detection functions are also built in, including short-circuit, high-temperature, and command transfer error detection, contributing to improved reliability in automotive applications. To increase the flexibility of development from day one and even beyond shipment of the final product, the memory content can be updated through the main MCU, once connected to a communication network (IoT). Automotive ML2253x Series Lineup (Tab.) Availability: Now (samples), July 2020 (OEM quantities) Support LAPIS Semiconductor offers the SDCK3 development tool that allows users to create voice data as well as prepare, write, and listen to ROM data stored in LAPIS Semiconductor's speech synthesis IC. Combining SDCK3 with an optional reference board that enables comprehensive evaluation for both hardware and software. (Fig. 3) Speech Synthesis IC Site https://www.lapis-semi.com/en/semicon/speech/ Speech Synthesis IC Support Site https://www.lapis-semi.com/cgi-bin/MyLAPIS/regi/login.cgi (New registration is required to login.)

About ROHM ROHM Semiconductor is a global company of 3.326 billion US dollars per March 31st, 2020 with 22,191 employees. The company develops and manufactures a very large product range from the Ultra-Low Power Microcontroller, Power Management, Standard ICs, SiC Diodes, MOSFETs and Modules, Power Transistors and Diodes, LEDs to passives components such as Resistors, Tantalum Capacitors and LED display units, thermal Printheads. The production of our high performing products is taking place in state-of-the-art manufacturing plants in Japan, Korea, Malaysia, Thailand, the Philippines and China. LAPIS Semiconductor (former OKI Semiconductor), SiCrystal GmbH and Kionix are companies of the ROHM Semiconductor Group. ROHM Semiconductor Europe has its Head Office near Dusseldorf serving the EMEA region (Europe, Middle East and Africa). For further information, please contact www.rohm.com/eu