A few additional/alternative reading recommendations:
Proceedings of the International Conference on Digital Audio Effects (DAFx). All open access at https://dafx.de/
Jon Dattorro's Effect Design papers:
https://ccrma.stanford.edu/~dattorro/EffectDesignPart1.pdf
https://ccrma.stanford.edu/~dattorro/EffectDesignPart2.pdf
https://ccrma.stanford.edu/~dattorro/EffectDesignPart3.pdf
Vadim Zavalishin - The Art Of VA Filter Design https://www.native-instruments.com/fileadmin/ni_media/downlo...
Proceedings of the International Computer Music Conference (open access) https://quod.lib.umich.edu/i/icmc/
Andy Farnell, "Designing Sound"
A standard introductory DSP textbook such as Ifeachor and Jervis, Orfanidis, Oppenheim and Schafer.
"The Computer Music Tutorial" and "Microsound" by Curtis Roads
Audio Anecdotes book series
"Music, Cognition and Computerised Sound", edited by Perry Cook
what am I missing?
> "The Computer Music Tutorial" and "Microsound" by Curtis Roads
It's worth noting that the second edition has been just released last year - 27 years after the first edition! It's a massive book: https://mitpress.mit.edu/9780262044912/the-computer-music-tu...
FM Theory and Applications By Dr John Chowning and David Bristow https://www.burnkit2600.com/manuals/fm_theory_and_applicatio...
Mostly focused on FM as applied by the DX7 IIRC. But really good overview of how FM works since it's the guy who invented it.
Boulanger and Lazzarini "The Audio Programming Book" - great if you want to start working straight away in C
Boulanger - "The Csound Book" (another classic language I still use today)
Greenbaum and Barzel - "Audio Anecdotes". A fascinating series of 3 volumes with all sorts of wisdom on FX design, studio systems and composition
Wilson, Cottle and Collins - "The Supercollider Book". In the style of The Csound Book, but with SC.
Loy - "Musicmathics". A rare and much under-rated two volume set on the equations behind audio DSP
Bilbao - "Numerical Sound Synthesis". A hard but rewarding journey to understanding audio physics as linear diff systems and implementing them efficiently in C, Goes well with Perry Cook's stuff.
Benson - "Music a mathematical offering" Very unusual book that analyses many subjects in music physics. Equations but no code.
Miranda "Computer Sound Design". More about music synthesis than "sound design" imho, but has some interesting fringe methods like cellular autonoma and genetic algorithms.