Notes concerning “Audio”

• Improving “science” in eSpeak's lexicon 2007 to 2009 (updated 2019-06-27) (15 minutes)
• Alastair thesis review 2013-05-17 (1 minute)
• Quadtree compression of terminal video RAM to do a megapixel windowing system in 6 KiB 2013-05-17 (9 minutes)
• A unicast phased-array ultrasonic “radio” 2013-05-17 (4 minutes)
• Square wave synthesis 2014-02-24 (2 minutes)
• Randomizing delta-sigma conversion to eliminate aliasing 2014-04-24 (7 minutes)
• Ideas to ship in 2014 2014-04-24 (updated 2019-05-05) (35 minutes)
• Rhythm codes 2015-09-03 (4 minutes)
• Would Synthgramelodia make a good base for livecoding music? 2015-09-03 (8 minutes)
• Convolution applications 2015-09-07 (updated 2019-08-14) (9 minutes)
• Hash feature detection 2015-09-17 (5 minutes)
• Piano synthesis 2015-09-17 (updated 2017-07-19) (6 minutes)
• Virtual instruments 2015-11-09 (3 minutes)
• How can we build an efficient microcontroller-based amplifier? 2016-07-13 (5 minutes)
• What’s the dumbest register allocator that might give you reasonable performance? 2016-10-11 (15 minutes)
• The Magic Kazoo: a synthesizer you stick in your mouth 2017-04-04 (updated 2019-05-12) (6 minutes)
• Can you make a vocoder simpler using CIC filters? 2017-06-28 (updated 2018-06-17) (2 minutes)
• Cheap frequency detection 2017-06-29 (updated 2019-06-19) (50 minutes)
• FM chirp sonar 2017-07-04 (1 minute)
• Cassette tape capacity 2018-04-27 (1 minute)
• Ideas to pursue 2018-05-05 (updated 2018-08-16) (6 minutes)
• Whistle detection 2018-06-06 (updated 2018-12-02) (18 minutes)
• Multitouch livecoding 2018-06-17 (1 minute)
• Is a phase vocoder or a bunch of PLLs a more efficient way to listen to all FM radio stations at once? 2018-06-17 (updated 2019-07-29) (7 minutes)
• Hacking a buck converter into a class-D amplifier? 2018-06-30 (4 minutes)
• The Bleep ultrasonic modem for local data communication 2018-12-10 (updated 2018-12-11) (8 minutes)
• Sample reversal 2018-12-18 (updated 2019-01-17) (5 minutes)
• Honk development 2019-03-21 (2 minutes)
• Groping toward a high-efficiency speaker driver 2019-04-02 (15 minutes)
• Audio video boustrophedon sync 2019-04-03 (2 minutes)
• Three-stack generic macro assembler (design sketch) 2019-04-30 (8 minutes)
• Measuring submicron displacements by pitch bending a slide guitar 2019-05-05 (18 minutes)
• Using the Goertzel algorithm, the Minsky algorithm, PLLs, and prefix sums for frequency detection 2019-06-16 (updated 2019-07-05) (39 minutes)
• Audio tablet 2019-09-28 (7 minutes)
• Examination of a shitty USB car charger 2019-10-24 (13 minutes)
• Hadamard rhythms 2019-11-01 (6 minutes)
• Audio logic analyzer 2019-11-12 (3 minutes)
• Applying FM synthesis to natural sounds such as voices 2019-11-12 (2 minutes)
• English diphones 2019-12-03 (5 minutes)
• Magic sinewave filter 2019-12-17 (6 minutes)