Eltro Information Rate Changer
The Eltro Information Rate Changer is an analog recording tool used to modulate pitch without affecting tempo. It is best known as the effect used in 2001: A Space Odyssey for the Hal 9000 computer.[1][2] Patents for the device date back to the 1920s.[1]
See also
References
- 1 2 Langford, Simon (2013). Digital Audio Editing: Correcting and Enhancing Audio in Pro Tools, Logic Pro, Cubase, and Studio One. CRC Press. p. 239. ISBN 978-1-134-11130-5.
- ↑ Krapp, Peter (2011). Noise Channels: Glitch and Error in Digital Culture. University of Minnesota Press. p. 65. ISBN 978-0-8166-7624-8.
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