Frequently Asked Questions |ROHM Semiconductor

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How should I select between crystal oscillator/ceramic oscillator and built-in RC oscillator in ML22Q53x, ML22Q62x, and ML22Q66x?
- Switching between crystal oscillator/ceramic oscillator and built-in RC oscillator is set in the Speech LSI Utility used when creating voice code data.
  Please see "4.2.1.2.10. User setting Parameter Dialog (ML22(Q)53x/62x/66x)" in the Speech LSI Utility User's Manual. Please select “Source clock oscillation” here.
  Please select “X'tal” when using an external clock.

What types of audio data can the Lapis speech synthesis LSI replay?
- Please load the WAV file into the Lapis original tool Speech LSI Utility and convert it to data for speech synthesis LSI. You can replay the sound code data generated here.

Is there a product equipped with a recording function?
- There is no product equipped with a recording function in LAPIS speech synthesis LSI.

Is there anything to consider when operating the master clock frequency at 4MHz?
- When creating sound code data with Speech LSI Utility, select 4.000MHz as the master clock frequency (fosc).
  This setting adjusts the sampling frequency to match the master clock frequency.
  Related Products: ML22530/Q53x, ML22660/Q66x

Is it possible to select the Speech synthesis algorithm for each playback phrase?
- The Speech synthesis algorithm can be selected for each phrase.
  Please select when creating sound code data with the Speech LSI Utility.

Please tell me how to raise the volume with SDCB Controller.
- You can adjust the volume with "ChVol" and "Volume".
  "ChVol" is equivalent to the CVOL command, and "Volume" is equivalent to the AVOL command.
  Related Products: ML22420/460, ML22530/Q53x, ML2256x/Q563, ML2257x/Q573, ML22594, ML22660/Q66x, ML2272x/76x, ML2282x/86x, ML22Q553

What is the bit precision of voice data that can be read into the Speech LSI Utility?
- For RIFF Wave files (* .wav), the bit precision corresponds to 16bit or 8bit. It does not support 24bit.
  Please refer to "2.3.1. Input Files" of the Speech LSI Utility User's Manual for the readable format.

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