High fidelity (English Wikipedia)

Fries, Bruce; Marty Fries (2005). Digital Audio Essentials. O'Reilly Media. pp. 144–147. ISBN 0-596-00856-2. Digital audio at 16-bit resolution has a theoretical dynamic range of 96 dB, but the actual dynamic range is usually lower because of overhead from filters that are built into most audio systems." ... "Audio CDs achieve about a 90-dB signal-to-noise ratio." "Most adults can't hear frequencies higher than 15 kHz, so the 44.1 kHz sampling rate of CD audio is more than adequate to reproduce the highest frequencies most people can hear.
Argos Catalogue Autumn/Winter 1986. Argos. 1986. pp. 258–259. Archived from the original on 2020-05-27. Midi Systems [..] Scheider 2500R Remote Control Midi System [..] Amstrad MS-45 Midi System [..] Toshiba S103K Midi System [etc] Alt URL

avguide.com (Global: low place; English: low place)

Robert Harley (2008-05-28). "Blind Listening Tests are Flawed: An Editorial". The Absolute Sound. Archived from the original on 2011-09-30. Retrieved 2011-09-29.

Lachenbruch, David (1963-03-23). Billboard. Nielsen Business Media, Inc. p. 47.
Eargle, John (2005). Handbook of Recording Engineering. Springer. p. 4. ISBN 0-387-28470-2.

Argos Catalogue Autumn/Winter 1986. Argos. 1986. pp. 258–259. Archived from the original on 2020-05-27. Midi Systems [..] Scheider 2500R Remote Control Midi System [..] Amstrad MS-45 Midi System [..] Toshiba S103K Midi System [etc] Alt URL
"Matsui MIDI 47". 14 March 2010.

D'Ambrose, Christoper; Choudhary, Rizwan (2003). Elert, Glenn (ed.). "Frequency range of human hearing". The Physics Factbook. Retrieved 2022-01-22.

Hartley, H. A. (1958). "High fidelity". Audio Design Handbook (PDF). New York, New York: Gernsback Library. pp. 7, 200. Library of Congress Catalog Card No. 57-9007. Archived from the original (PDF) on 2009-01-27. Retrieved 2009-08-08. I invented the phrase 'high fidelity' in 1927 to denote a type of sound reproduction that might be taken rather seriously by a music lover. In those days the average radio or phonograph equipment sounded pretty horrible but, as I was really interested in music, it occurred to me that something might be done about it.

Hartley, H. A. (1958). "High fidelity". Audio Design Handbook (PDF). New York, New York: Gernsback Library. pp. 7, 200. Library of Congress Catalog Card No. 57-9007. Archived from the original (PDF) on 2009-01-27. Retrieved 2009-08-08. I invented the phrase 'high fidelity' in 1927 to denote a type of sound reproduction that might be taken rather seriously by a music lover. In those days the average radio or phonograph equipment sounded pretty horrible but, as I was really interested in music, it occurred to me that something might be done about it.
David Lander (June–July 2006). "The Buyable Past: Classic Hi-Fi Components". American Heritage. Archived from the original on 2007-02-23.
Robert Harley (2008-05-28). "Blind Listening Tests are Flawed: An Editorial". The Absolute Sound. Archived from the original on 2011-09-30. Retrieved 2011-09-29.
Argos Catalogue Autumn/Winter 1986. Argos. 1986. pp. 258–259. Archived from the original on 2020-05-27. Midi Systems [..] Scheider 2500R Remote Control Midi System [..] Amstrad MS-45 Midi System [..] Toshiba S103K Midi System [etc] Alt URL