Speech Synthesis LSI with External Memory - Product Search Results | ROHM Semiconductor (2024)

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Product Family Parametric Search Supporting Information Speech Synthesis LSIs with External MemoryInternal AB-class/D-class Speaker Amplifier Type Internal AB-class Speaker Amplifier Type Overview Product features Applications

Speech Synthesis LSI with External Memory

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Speech Synthesis LSI with External Memory - Product Search Results | ROHM Semiconductor (1)

External memory compatible speech synthesis LSIs ML226xx and ML224xx can connect up to 128Mbit serial memory externally.
Ideal for long Sound playback.

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      Speech Synthesis LSI with External Memory - Product Search Results | ROHM Semiconductor (3)

      Speech Synthesis LSI with External Memory - Product Search Results | ROHM Semiconductor (4)

      Speech Synthesis LSI with External Memory - Product Search Results | ROHM Semiconductor (5)

      Supporting Information

      Speech Synthesis LSIs with External Memory
      Internal AB-class/D-class Speaker Amplifier Type Internal AB-class Speaker Amplifier Type

      • Overview
      • Product Features
      • Applications

      Overview

      External memory compatible speech synthesis LSI can connect up to 128Mbit serial memory externally.
      Because it supports a large memory, it is ideal for long playback.

      Product features

      Features 1Speech Synthesis LSIs control external memory, facilitating sound generation

      Controlling external memory allows Speech Synthesis LSIs to play back sound data without placing a load on the MCU.
      Sound generation is easily achieved by inputting control commands of only a few bytes from an MCU.

      Features 2High fidelity, high compression HQ-ADPCM*1 makes it possible to reduce the memory capacity

      The ML226xx series adopts the newly developed high fidelity, high compression sound algorithm HQ-ADPCM that provides a clearer sound and richer sound range while reducing data size compared with conventional ADPCM, providing a more comfortable listening experience.For example, melodies and sound effects that are degraded with ADPCM and cannot be played with uncompressed PCM can be compressed with HQ-ADPCM, ensuring superior sound quality while reducing memory capacity.
      Up to 80% compression is possible vs 4bit ADPCM and 20% compared with 16bit ADPCM.

      Applicable Models : ML22620、ML22660
      *1 : HQ-ADPCM is Ky's high-quality sound compression technology.
      Ky's is a registered trademark of Kyushu Institute of Technology.Speech Synthesis LSI with External Memory - Product Search Results | ROHM Semiconductor (10)

      Feature 3Integrated Class D amp ensures high efficiency output

      Class D speaker amps are capable of 1.0W (Max) output, feature low heat generation even at high (sound) volumes, and minimize heat dissipation measures.
      In addition, efficiency is excellent at low battery power, reducing current consumption and prolonging battery life.

      Applicable Models : ML22620、ML22660

      Applications

      LAPIS TECHNOLOGY™ 's External Memory compatible Speech Synthesis LSI is ideal for a melody system, zoo, museum guide, instruction manual, healing goods, radar detector, kids book, etc. lasting from tens of seconds to several minutes.
      The capacity of external memory is free.

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      "LAPIS TECHNOLOGY™" is a trademark or a registered trademark of ROHM Co., Ltd.

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      Speech Synthesis LSI with External Memory - Product Search Results | ROHM Semiconductor (2024)
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