Location History:
- Chi-Lung, TW (2008 - 2011)
- Hsinchu, TW (2013 - 2022)
Company Filing History:
Years Active: 2008-2022
Title: Innovations of Chun-Ming Cho
Introduction
Chun-Ming Cho is a prominent inventor based in Hsinchu, Taiwan. He has made significant contributions to the field of audio technology, holding a total of 11 patents. His work focuses on developing advanced audio playback and noise-canceling mechanisms.
Latest Patents
One of his latest patents is an audio playback apparatus and method having a noise-canceling mechanism. This invention includes a sound receiving circuit, a storage circuit, a filter control circuit, a filter circuit, and an audio playback circuit. The sound receiving circuit captures audio signals that include noise, while the storage circuit retains filter parameters. The filter control circuit comprises a noise estimation circuit, a noise distribution determination circuit, and a parameter generation circuit. The noise estimation circuit calculates the stationary noise power spectrum density, allowing the noise distribution determination circuit to ascertain the noise spectrum distribution. The parameter generation circuit analyzes this distribution to retrieve selected filter parameters. The filter circuit then processes the received sound signal to produce an anti-noise audio signal, which is played back alongside the actual audio signal.
Another notable patent is an audio adjustment method and associated audio adjustment circuit for active noise cancellation. This circuit features an audio generating circuit and an audio input unit that transmits audio to be broadcast or a sound testing signal. It also includes an audio receiver for capturing background sound, which corresponds to the audio being broadcasted. A channel estimation unit performs time-frequency conversion on both signals to generate a frequency response, which adjusts the active noise-canceling coefficient to enhance the noise cancellation effect.
Career Highlights
Chun-Ming Cho is currently employed at Realtek Semiconductor Inc., a leading company in the semiconductor industry. His innovative work has positioned him as a key figure in audio technology advancements.
Collaborations
He has collaborated with notable coworkers, including Wei-Hung He and Kuang-Yu Yen, contributing to various projects that enhance audio technology.
Conclusion
Chun-Ming Cho's contributions to audio technology through his patents and collaborations highlight his role as an influential inventor in the field. His work continues to impact the way we experience sound and noise cancellation.