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Hiroyuki Ehara

3 accepted papers

2025

3GPP IVAS Codec - Perspectives on Development, Testing and Standardization

ICASSP 2025accepted

The standardization of the codec for Immersive Voice and Audio Services (IVAS) was completed by the 3rd Generation Partnership Project in June 2024. The IVAS codec goes beyond traditional mono voice coding by representing and reproducing the spatial characteristics of sound, creating an immersive au…

Cited by 0SourceScholar
2015

Low bit rate high-quality MDCT audio coding of the 3GPP EVS standard

ICASSP 2015accepted

This paper presents a low bit-rate MDCT coder, which is adopted as a part of the recently standardized codec for Enhanced Voice Services. To maximize codec performance for NB to SWB input signals for low bit-rates (7.2 to 16.4 kbps), new adaptive bit-allocation and spectrum quantization schemes, whi…

Cited by 0SourceScholar
2015

Overview of the EVS codec architecture

ICASSP 2015accepted

The recently standardized 3GPP codec for Enhanced Voice Services (EVS) offers new features and improvements for low-delay real-time communication systems. Based on a novel, switched low-delay speech/audio codec, the EVS codec contains various tools for better compression efficiency and higher qualit…

Cited by 169SourceScholar