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Semi-Automatic Artificial Lips Device for Brass Instruments with Real-Time Pitch Feedback Control.

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A new semi-automatic device enables brass instrument performance without lip vibration, offering controllable sound generation and pitch stabilization. This artificial lips system achieves comparable harmonic structure and musical intervals to conventional playing.

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Area of Science:

  • Acoustic Engineering
  • Musical Instrument Technology
  • Robotics in Music

Background:

  • Traditional brass instrument playing requires precise lip vibration for sound production.
  • Achieving consistent pitch and timbre can be challenging for performers, especially in complex musical passages.
  • Existing automated systems often lack the nuanced control for expressive musicality.

Purpose of the Study:

  • To develop a semi-automatic artificial lips control device for brass instruments.
  • To enable sound production without requiring the performer to vibrate their own lips.
  • To provide controllable brass sound generation and pitch stabilization.

Main Methods:

  • Integration of position and aperture control for artificial lips.
  • Utilized a pre-calibrated motor table and wire traction for precise lip movement.
  • Incorporated acoustic feedback for real-time pitch stabilization.
  • Evaluated performance on a euphonium, assessing timbre, pitch range, and harmonic modes.

Main Results:

  • The device produced tones with a harmonic structure comparable to conventional human playing.
  • Pitch-range tests confirmed the generation of practical musical intervals.
  • Pitch stabilization tests demonstrated reliable harmonic mode changes.
  • Real-time acoustic feedback significantly improved pitch stability during performance.

Conclusions:

  • The proposed system offers a compact and reproducible framework for controllable brass sound generation.
  • It provides effective pitch stabilization without fully automating the human performance aspect.
  • The device demonstrates potential for musicians seeking alternative performance methods or enhanced control.