Daisy 09 Sound Download
Vernell Steakley
Daisy is a powerful device for making music makers. It features everything you need for creating your own high fidelity hardware audio devices. Just plug in a USB cable and start making sound! No soldering required.
Digital Accessible Information System, or DAISY files are often described as "digital talking books". Many people have DAISY books on CDs, which are regular discs but cannot be played in standard stereos. DAISY audiobooks sound like other CD audiobooks, except that users can also search, place bookmarks, navigate line by line, and control the speaking speed without adding distortion.
There are lots and lots of other modulation connections that mayl sound interesting. A flexible vocoder would e.g. allow for any possible connection between the modulator band outputs and carrier VCA inputs. This is why vocoders often have a patch area or connection matrix or modulation matrix (see schematic II).
There is a neat trick to turn the output of a vocoder into a pseudo stereo output. When adding a panning stage to the output and panning the odd carrier VCA outputs slightly to one output and the even carrier VCA outputs slightly to the other output one often gets a nice spacy sound! Obviously this depends on the tonal contents of the carrier and modulator signals (and the number of bands) to sound good. Have a look at schematic III.
This track is quite old and the vocoded sounds were made using a file based version of the vocoder that preceeds the real time version described in this thread by about 20 years. That code runs on Linux and OSX and its core code was used in the present real time version.
If you listen to the song keep in mind that ALL rhythmic string like sounds you hear throughout the track were produced by the vocoder with a single string sample and a drum loop as input signals and lots of variations of the modulation matrix.
The vocoder will only produce sound if the carrier bands that are modulated have some signal content and if the modulator band envelopes that do the modulating have some content. If there is a mismatch, e.g. one of the carrier bands does not contain any signal, then that band will not contribute any sound to the summed output. Similarly if a carrier band does have some signal in it, but it is not modulated by a modulator envelope because that lacks any signal, it will not contribute to the summed output. So the resulting output signal heavily depends on both signals.
Oh @Jos! This is a bloody marvel, and from such a simple daisy setup. Well done mate! I think @ChristianBloch guessed it first or am I confusing projects.
Off to take a closer look.
Question.: did the early vocoders (Moog etc) have voiced/unvoiced detection and if so how?
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Windows\n\n\n\nWDM drivers still connect to channels pairs individually. The ASIO \ndriver will automatically combine all audio channels into a single \ninterface. You may need to re-start your DAW in order to detect the \nadditional channels.\n\n\n\n\nmacOS \n\n\n\nYou need to ensure that all units are running at the desired sample rate using CSP sync before daisy-chaining them: \n\n\n\n
Reports of improved sound quality achieved by daisy chaining two or more EtherREGENs were intriguing. The second, downstream, EtherREGEN, and its associated accessories, were borrowed from my office stereo system and installed in my home stereo system. Four configurations with two daisy chained EtherREGENs were evaluated. None of the daisy chained configurations sounded as good as the single EtherRegen configuration. One configuration exhibited very poor sound quality.
This report is not meant to take an advocacy position on the subject of using multiple EtherREGENs in a digital music stream. The purpose here is to report the results of four daisy chained EtherREGEN configurations in my home stereo system. I have no reason to doubt the veracity of the positive reports of others. Indeed, such reports encouraged me to do these trials.
The listening evaluation methodology used here consisted of making maps of the placement of sound images in the stereophonic sound field and making notes on the character of the sound images. The methodology is discussed in more detail in this post:
Figure 4. Daisy chain configuration 1. Both EtherREGENs were clocked by the triple output AfterDark Emperor Double Crown clock. If the sound of the single EtherREGEN was assigned a score of 10, where everything from 1 to 10 sounded good, daisy chain configuration 1 would score -15. I did not bother with putting brass weights on the downstream EtherREGEN in this configuration. The traumatic nature of the sounddid not warrant such care.
Clocking both EtherREGENs from the Emperor Double Crown clown clock resulted in very poor sound quality. There was diminished bass, diminished image weight, diminished tactile sensation, diminished overall clarity and detail, diminished everything. A visual analogy would be comparing a richly colored and sharply detailed photo to one with faded colors and less sharp focus. I forwarded this result to Alex at Uptone Audio. He thought there might have been an issue with the AfterDark clock's outputs not being well isolated, thereby causing issues with one of the EtherREGEN's noise isolation moats being defeated. He also suggested running the downstream EtherREGEN with its stock SMPS rather than the TeraDak LPS.
Figure 5. Daisy chain configuration 2. Downstream EtherRegen powered by its stock switch mode power supply and clocked by an AfterDark Queen clock. If the sound of the single EtherREGEN was assigned a score of 10, daisy chain configuration 2 would score 4. Daisy chain configuration 2 sounded good but nowhere near as good as the single EtherREGEN configuration.
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