A Software-Centric Solution to Automotive Audio for General Purpose CPUs

Every M, Layton L, Marin JM. A Software-Centric Solution to Automotive Audio for General Purpose CPUs. In: AES Conference: 2019 AES INTERNATIONAL CONFERENCE ON AUTOMOTIVE AUDIO. Audio Engineering Society; 2019. Paper 11. Available from: https://aes.org/publications/elibrary-page/?id=20536

@inproceedings{Every2019_20536,
  author = {Every, Mark and Layton, Len and Marin, Jose Maria},
  title = {{A Software-Centric Solution to Automotive Audio for General Purpose CPUs}},
  booktitle = {AES Conference: 2019 AES INTERNATIONAL CONFERENCE ON AUTOMOTIVE AUDIO},
  note = {Paper 11},
  year = {2019},
  month = sep,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=20536}
}

TY  - CPAPER
TI  - A Software-Centric Solution to Automotive Audio for General Purpose CPUs
AU  - Every, Mark
AU  - Layton, Len
AU  - Marin,Jose Maria
T2  - AES Conference: 2019 AES INTERNATIONAL CONFERENCE ON AUTOMOTIVE AUDIO
M1  - Paper 11
PY  - 2019
DA  - 2019/09/06
UR  - https://aes.org/publications/elibrary-page/?id=20536
PB  - Audio Engineering Society
LA  - en
AB  - "Current automotive audio systems are in general distributed systems, both in terms of hardware and functionality. An automotive audio system may contain several DSPs, microprocessors and general purpose multi-core CPUs, with increasingly complex functionality split between processing cores. There are many situations where audio signals need to be passed back and forth between cores, such as for mixing or acoustic echo cancellation, and timing, synchronization, data formats and other discrepancies between components have to be managed, which adds significant complexity and makes the whole system more fragile and inextensible. Some reasons for this division of tasks are historical; in the past, specialized DSPs for audio equalization, filtering, etc. were required to offload the main application processors, and functions such as audio chimes have to boot-up quickly and meet more stringent safety requirements than entertainment signals. Nowadays, general purpose multi-core CPUs (referred to here as GP CPUs), such as ARM or Intel/AMD processors, have advanced considerably and many automotive SoCs feature GP CPUs that run at 2 GHz or more, but the DSP typically remains below 1 GHz. Consolidating audio processing functionality on a single GP CPU with QNX Acoustics Management Platform (AMP) reduces system cost and complexity, improves reliability, accelerates time to market, provides standards-compliance, and brings capabilities and performance to new levels."
ER  -