What is DDS | Direct Digital Synthesizer | Tutorial
The analog synthesizer section of the JD-Xi provides authentic and expressive lead and bass sounds.
Content tagged with direct digital synthesis
by Curtis Roads is how I first learned about synthesis. It has been the standardsynthesis textbook since the 1990s. At this point, it is somewhat dated, but itstill offers a reasonably comprehensive look at computer music technology.
The last product to be constructed by Digelius was DIMI-6000, a computer-controlled (this was in 1973!) analogue synthesizer. Like several later computer-controlled behemoth synths, the gigantic effort sunk Digelius. Two DMI-6000s were built, and neither of them is functional today, as the operating system has been lost. In hindsight, naming the operating software DISMAL (Digelius System Music Assembly Language) was perhaps begging for nemesis to strike!
Dual-tone direct digital synthesizer - John Fluke Mfg
Additive synthesizers are very easy to create. Due to their simplicity, additivesynthesis is widely implemented in some form in most synthesizers. Still, the tonesgenerated in the previous examples sound pretty rudimentary. At this point we'restill missing a lot of tools in our toolbox. In the next few chapters we will lookat some tools that will improve all of our synthesizers.
With the power of Java, Beads, and a modern computer, we are not limitedto merely two sine waves. An additive synthesizer in Beads can contain anarbitrary number of WavePlayers up to several hundred before memory and processingtime start to become an issue.
Digital synthesizer - Wikipedia
As synthesizer programmers, our job is to mold the vibrations into something that welike. Maybe you want to generate a wall of chaotic noise, or maybe you want to simulatethe sound of an orchestra. But before we can get to that, we need to know what soundslooks like in digital form, and how it gets into that form.
For anyone building an electronic studio in the 1960s, a new Moog modular synthesizer was high on the wish list, but the price tag was even higher. Since the Institute of Musicology had no funding for a full modular system, Erkki set out to construct his own. He had no access to Moog's schematics, so he had to use whatever material he found available, including Moog brochures and transistor circuit manuals. The Integrated Synthesizer was to consist of a Generator Unit (oscillator), Filter Unit and a Mixer. Kurenniemi employed whatever sound processing circuits he could find, analogue as well as digital. Integrated circuits were not available in Finland at the time, so instead he found some epoxy-encapsulated logic circuits, gates and flip-flops from Philips. These were originally intended for use in calculators, but Kurenniemi used them in his Generator Unit, both for audio and control signals. The sound generator was programmable through a 500-point pin matrix, like the (later) EMS VCS3. Erkki presented his Generator in 1964 at the Jyväskylä Summer Festival for algorithmic music, while the whole project took yet another three years to complete. The Integrated Synthesizer is now at the Kiasma art museum in Helsinki.
Digital waveguide synthesis - Wikipedia
Digital Sound Synthesis - Charles Ames
Released in 1979, the Casio VL-1 was the first commercial digital synthesizer, selling for $69.95
Sound Synthesis in Java - Evan Merz
Frequency spectrum of an additive synthesis tone.
Even though they look a lot like pianos, every digital synthesizer is a computer
AD9956 Single-tone mode operation | EngineerZone
The DIMI-6000 was Kurenniemi's last hardware synthesizer, and was, for the time, tremendously advanced. The sound-generating circuitry was analogue and voltage-controlled, but everything was governed by a genuine microcomputer, based on the then newly developed Intel 8008 microprocessor (an 8-bit processor and a distant predecessor of today's PC processors). The computer, which featured a built-in display and a cassette recorder for data storage, was connected to a stack of hardware boxes, containing the synthesizer itself, the D-A and A-D interface and switching matrix. Two DIMI-6000s were built before Digelius went bankrupt.
1 Reply mcee Jan 3, 2018 1:42 AM
At the dawning of the information age, the idea of controlling synthesizers from a computer had obvious appeal, but the price tag on the early 'electronic brains' made them unobtainable for anybody but the biggest institutes and private enterprises. Instead, Erkki Kurenniemi set out to make an instrument just as powerful as a real computer, yet more affordable. The A in DIMI-A stands for 'Associative memory', which is a different way of storing digital information in a computer. Conventional random access memory consists of a number of locations with individual addresses; to recall a particular piece of information, you need to know what address to inspect. With an associative memory, by contrast, the user searches for a particular piece of data, and the memory returns one or more addresses where that data can be found. DIMI-A was the first instrument to be built by Digelius Electronics and was Kurenniemi's most aesthetically designed instrument. Still, the user interface was characteristically different from everything else. Programming was done with two probes on a touchpad, but there was no clue as to what linked the contact points and the tones that resulted.
Single-tone mode is the default operation of the AD9956.
A unit generator is a bit like a software version of a module in a modular synthesizer. A modular synthesizer has modules for generating tones,filtering out certain frequencies, and changing the gain. Analogous unit generators exist in the Beads library.
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It was perfect for my situation.But I, like many other keyboardists, piano players, songwriters, and composers alike have desired to advance to some of the more coveted digital pianos made famous by producers and artists around the world.There were the P-Funk All Stars who popularized keyboards and synthesizers with their captivating performances of the 70’s.
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