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Location History:
- Taejon, KR (2006 - 2009)
- Daejon, KR (2005 - 2016)
- Daejeon, KR (2004 - 2024)
- Seoul, KR (2017 - 2024)
Company Filing History:
55 out of 11,277 
7 out of 173 
1 out of 4 Years Active: 2004-2025
Title: Innovations and Achievements of Chieteuk Ahn in Audio Coding Technologies
Introduction
Chieteuk Ahn, based in Daejeon, South Korea, is a prominent inventor with an impressive portfolio of 54 patents. His work primarily focuses on audio and speech processing technologies, contributing significantly to the advancements in codec systems.
Latest Patents
Among his latest innovations, Ahn has developed a Unified Speech and Audio Codec (USAC) processing windows sequence based mode switching. This innovative codec allows for efficient encoding and decoding by utilizing overlapping frames during mode switching, thereby enhancing coding efficiency. Another notable patent by Ahn is the LPC residual signal encoding/decoding apparatus of a modified discrete cosine transform (MDCT)-based unified voice/audio encoding device. This device analyzes the properties of input signals and selects encoding methods for LPC filtered signals utilizing various filterbanks.
Career Highlights
Chieteuk Ahn has had a distinguished career, contributing to key organizations such as the Electronics and Telecommunications Research Institute and the Kwangwoon University Industry-Academic Collaboration Foundation. His affiliations have enabled him to engage deeply with cutting-edge research and development in audio coding.
Collaborations
Throughout his career, Ahn has collaborated with notable colleagues such as Kyeongok Kang and Tae Jin Lee. These collaborations have fostered an environment of innovation and have led to significant advancements within their field.
Conclusion
Chieteuk Ahn's remarkable contributions and ongoing development of patented technologies illustrate his pivotal role in the field of audio coding. His innovative work continues to push the boundaries of what is possible in speech and audio processing, further establishing his reputation as a leading inventor in this domain.
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