A major application for Binaural Cue Coding (BCC) is multichannel audio coding. A previously proposed system combines full-band BCC for spatial parameters with an audio coder for a downmixed representation of the multichannel input. This paper presents a scalable hybrid coder combining a partial-band BCC as preprocessor and post-processor with a subband coder. The hybrid system supports a gradual tradeoff of bitrate and spatial image ranging from transparent multichannel and stereo to full-band BCC. To avoid coloration from the required up and down-mixing within BCC, an equalized mixing scheme based on a binaural loudness model is proposed. Subjective tests and bitrate simulations confirm the expected benefits of the hybrid coder in the transition range from full-band BCC to stereo.
(See document for exact affiliation information.)
https://aes2.org/publications/elibrary-page/?id=12716
(376KB)
Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member Join the AES. If you need to check your member status, login to the Member Portal.
