title: BSCodec: A Band-Split Neural Codec for High-Quality Universal Audio Reconstruction
abstract: Neural audio codecs have recently enabled high-fidelity reconstruction at high compression rates, especially for speech.However, speech and non-speech audio exhibit fundamentally different spectral characteristics: speech energy concentrates in narrow bands around pitch harmonics (80-400 Hz), while non-speech audio requires faithful reproduction across the full spectrum, particularly preserving higher frequencies that define timbre and texture.This poses a challenge-speech-optimized neural codec