Casio CZ/ VZ/ FZ - Pro Series

I can barely reply because Yahoo Neo theme is locking up my browser (few letters per minutes) with 16tons of javascript. Dear webmaster, please turn off this horrible theme! I am using a historical PC made of finest DOS hardware (550MHz AMD K6-3+ with 768MHz) running Win98SE and I definitely will not "up"grade to any modern unrepairable wifi c'rap. And yes, the link is indeed dead. Try the web archive: http://web.archive.org/web/20120618100255/http://homepage.mac.com/synth_seal/html/cz1.html --- In czsynth@yahoogroups.com, <resistenzaaoltranza@...> wrote: Hi,I don't know if the thing I am writing now can be related to this post, but I read somewhere that there are some hidden features via sysex about waveforms and modulation. It should be described here: " http://homepage.mac.com/synth_seal/html/cz1.html" , but I can't reach it through my Pc. Does the link exist anymore? Did someone saved the page? Maybe I have it saved on the several Usb keys I have, or on my spare Hard disk. I am going to try and check. I also read there is an I-Pad editor with these secret features. According to the page " http://www.matrixsynth.com/2012/07/accessing-casio-cz-series-hidden.html"   "Accessed via the iCZ - iControlMIDI (iTunes) Casio CZ series editor on iPad. Quick tutorial: The Casio CZ series are Phase Distortion synths - Casio's version FM synthesis. With Yamaha FM synthesis there are carrier waveforms and modulator waveforms. The carrier is  what you hear and the modulator modulates. The DX7 has various  combinations of them modulating each other referred to as algorithms.  On the CZ series, and referenced below, Waves are carriers and "Window  Waves" are modulators.  "We are using a Line 1 + Line 2'  structure, but not using both Lines at the same time. Line 1 DCO Wave 1  is Null (Hidden Wave); Line 1 DCO Wave 2 is Sine Sync and Line 1 Window  Wave is Triangle. Line 2 DCO Wave 1 is Double Sine; Line 2 DCO Wave 2 is Off and Line 2 Window Wave is Spike (Hidden Wave). In the first part, only Line 1 can be heard. In the second part, we are using iControlMIDI increase the DCW1 Level 1 to max which makes the Window Modulation sounds like a resonant filter. In the third part and last, we are using iControlMIDI to add Line 2' (so  with Detune) and you can hear the Window Wave Spike effect which almost  sounds like a distortion whereas the Line 2 DCO Wave 1 Double Sine  sounds like a back-end sawtooth. There is a very short software delay and software chorus.".  All the best!    ________________________________ Da: CYBERYOGI =CO= Windler < cowindler01@... > A: CZsynth@yahoogroups.com  Inviato: Domenica 25 Agosto 2013 2:36 Oggetto: [CZsynth] Triangular Wave Modulation = Phase Distortion? (Casio PCM engine patents)       Triangular wave modulation (US patent 5164530) is an FM-like Casio speciality that generates waveforms by modulating a monotonous carrier function with a sine (or other) wave and decoding the signal by mirroring it at a triangular wave. With the same count of operators (here only 2?) the produced waveform has higher harmonics than normal FM because at high modulation the wave peaks fold back into the opposite direction. Without modulation it outputs a sine wave and so can nicely blend between very dull and bright timbres. The carrier waveform stands in ROM and so can be switched between a variety of timbres. Like with FM, operators can be combined in various ways.  https://www.google.com/patents/US5164530  - Is TM part of the "phase distortion" engine or something else?  I own a CZ-230S and revived a CZ-101 (had severe water and fire damage), but I am no PD expert and never heard about TM synthesis before (even websearch doesn't help much). Is this used in phase distortion synths (e.g. the later VZ-series) or was this only used in the Casio "Pulse Code Modulation" engine of preset sound keyboards? Patent 5164530 suggests that Casio at least planned to make dedicated TM synthesizers with a PD/FM-like user interface.  I am reworking my technical keyboard descriptions for the WarrantyVoid site. So I websearched for 1980th keyboard patents and discovered a lot of interesting info.  https://www.google.com/patents/US5319151  This is what I wrote for my SA-series page:  >>> The sound generation is apparently based on a highly complex softsynth with many algorithms those can perform PCM, DPCM, FM and TM (triangular wave modulation) synthesis with sophisticated envelopes. These Casio PCM algorithms are described in the US patent 5319151. This rather confusing 121 page tome however is ambiguous because it covers plenty of different implementations those e.g. can employ different counts of chip-internal sub-CPU cores for sound generation in higher grade instruments. The SA-series is surely the cheapest described "First" or "Second Embodiment" which has none. The algorithms for this version even describe how shorter tasks are stuffed with blank "dummy commands" to keep the timing in sync when different sounds would need different computing time. It works indeed very VCS2600-like - a marvel of freakish realtime programming made from one big loop (plus in "First Embodiment" one timer IRQ to compute waveforms and fill the DAC output FIFO; the "Second" does even this during dummy commands).  The interpolation method with that Casio smoothly blends between wavetable sections is described in the US patent 4442745 "Long duration aperiodic musical waveform generator" It plays sections of compacted samples back and forward to implement things like long decaying cymbals. US patent 4958552 explains algorithms how envelope data is extracted from natural instrument recordings and applied on loop samples as a approximated segmented functions. The original envelope may be removed from the stored loop sample by a waveform normalizer (US patent 4691608). Most important is that these chained envelopes can have basically any length and have (unlike e.g. ADSR) no fixed count of steps. Combined with crossfading between adjacent loop samples this permits very flexible sound definition.  The US patent 5319151 "Data processing apparatus outputting waveform data in a certain interval" mentions for the "First Embodiment" that the chip size is only 5x5mm, a program word has 28 bits (including lower potion of next address) and these further hardware specs:  "With regard to the circuit scale and the operation time of the specific embodiment (PCM sound source system capable of producing eight polyphonic sounds) the control ROM has a size of 112K bits, RAM 445.4K bits and the control data/waveform ROM (for 100 timbres) 508K bits; one machine cycle is about 276 nanoseconds with a maximum number of cycles of the interrupt program when invoked being about 150; and the executing period of the interrupting process (tone output sampling period) is about 47 microseconds."  Expressed in KBytes this would mean 55.7KB RAM, 14KB program ROM and 63.5KB sound ROM, which isn't far away from a Commodore C64 with large ROM cartridge. Said CPU speed would be about 3.6 MIPS. <<<  Higher grade MIDI keyboards like MT-240, MT-540 or MT-750 certainly have sub-CPU cores for 16 bit sound generation. Their external ROM is 512KB up to 1MB.  - Does anybody know more about this sound engine?  MAY THE SOFTWARE BE WITH YOU!  *============================================================================* I CYBERYOGI Christian Oliver(=CO=) Windler I I (teachmaster of LOGOLOGIE - the first cyberage-religion!) I I ! I *=============================ABANDON=THE=BRUTALITY==========================* { http://weltenschule.de/e_index.html}     [Non-text portions of this message have been removed]