Dnote® is patented worldwide with the leading-edge digital signal processing developed in Japan for digital audio products that require better sound quality and long battery life. A conventional digital audio system includes many analog circuits, but Dnote® makes audio playback systems using only digital circuits and speakers with multiple coils, which faithfully transmits high resolution digital signals to multiple coils. As a result, the audio playback system can easily reproduce clear sound with low power consumption and rich sound effect on an internal DSP. Multiple coils driven by a modulated digital signal enables our Dnote® technology. If output bit is 4-bit with differential output, the number of coils will be 4 coil and each output bit will be connected to each coil.

Multiple coils and modulated digital signal enables our Dnote® technology. If output bit is 4-bit with differential output, the number of coils will be 4 coil and each output bit will be connected to each coil.

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Benefit

  • Loud Sound from Low Power Supply
    Digital audio system with Dnote® and multi-coil speaker creates loud sound with high output power (12.5W at 5.0 V).

  • Extended Battery Life
    Digital audio system with Dnote® and multi-coil speaker improves efficiency of power supply circuit without the need of high power supply voltage.

  • Improved Sound Quality
    Digital audio system with Dnote® and multi-coil speaker includes DSP algorithms that provides a rich sound effect to improve acoustic performance.

Since Trigence Dnote® technology requires multi-coil speakers, many customers may have inquiries about prototype making and mass production.

 

Currently, many coil vendors and speaker vendors are supporting prototype making and mass production, and we can introduce vendors that meet customer requirements with multi-coil capability.

 

Movie is an example of automatic multi-coil manufacturing equipment developed by Nittoku Engineering Co., Ltd. It automatically winds multi-coils for micro speakers, shapes the coil from round to rectangular, cuts wires, etc.

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