A Digital Hardware for Filtering and Mixing of Audio Signals

Hergum R. A Digital Hardware for Filtering and Mixing of Audio Signals. In: AES Convention 71. Audio Engineering Society; 1982.pp. 1875:1-11. Available from: https://aes.org/publications/elibrary-page/?id=11881

@inproceedings{Hergum1982_11881,
  author = {Hergum, Ragnar},
  title = {{A Digital Hardware for Filtering and Mixing of Audio Signals}},
  booktitle = {AES Convention 71},
  pages = {1875:1-11},
  url = {https://aes.org/publications/elibrary-page/?id=11881},
  year = {1982},
  month = mar,
  publisher = {Audio Engineering Society}
}

TY  - CPAPER
TI  - A Digital Hardware for Filtering and Mixing of Audio Signals
AU  - Hergum, Ragnar
T2  - AES Convention 71
SP  - 1
EP  - 11
M1  - Paper 1875
PY  - 1982
DA  - 1982/03/06
UR  - https://aes.org/publications/elibrary-page/?id=11881
PB  - Audio Engineering Society
LA  - en
AB  - The continual aspiration towards improvements in professional broadcast and studio equipment has called for a conversion fom traditional analog systems to digital processing of high quality audio signals. This paper describes a special purpose digital hardware processor dedicated to the processing usually found in conventional analog mixing desks. Equalization and mix-down from six to two channels are done with a sample rate of 50 kHz and the audio signals coded to 16 bits. The same hardware unit performs the filtering, the mix-down and a final fading in real time. Special attention has been paid to the noise introduced due to the finite-precision arithetic in the implementation of digital systems. The processor therefore uses two LSI multiplier-accumulator units in parallel to perform the high speed arithmetic with 23-bit resolution.
ER  -