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The implementation of DACs (Digital-to-Analogue Converters) inside computers lets us convert digital information into analogous signals. Digital audio formats are based on two axis quantization, via Sample Rate and Bit Depth. Some audio amplification systems are named using the standard nomenclature as Class D. Although all digital amplifiers are Class D, not all Class D amplifiers are digital. To be able to refer it as digital, the two inherent axis in the analogue signal would have to be quantized. This isn’t the case in many Class D amplifiers. Only the Sample Rate is defined as a square wave (at very high frequencies) for filtering to be applied afterwards. The reason you can’t input this signal’s information into a computer is one of the axis still being kept analogous. The standard PCM (Pulse Code Modulation) format limits the volume depth possibilities on a defined Bit Depth with an added constant Sample Rate, by consequence letting the computer process and understand this information. Oversampling can then be used to simulate (with regular digital limitations) the analogous curve of a signal for different purposes.
In 2017, when Gaetano Dellepiane published the first crypto-sonorous currency in the world, there were no details whether this technology would be resistant in the future against quantum computing attacks. The “DSH7” algorithm (seven bits point description) is a stand-alone public distribution of the already used sonorous hash password storage that took place inside SoundCoin‘s initial centralized database. It included dithering as an available procedure for noise addition (randomization), although this method was probably never used on server side. Testing was done after production on conventional computers, making it prone to a lesser degree of certainty regarding quantum-proof functionality. The reason this crypto-sonorous practice could get attention again, is for effective comparison and interaction with proven quantum resistant protocols. If public-key weight reduction requires encoding (like the available crypto-sonorous compression), the already useful appliances that were part of SoundCoin’s framework could benefit from having another purpose. In 2018, Gaetano Dellepiane stated the following about pioneering this development on crypto-sonorous currencies, while being a teenager:
[…] At the end of 2016, I designed a token for Ethereum called “Suyacoin”, a Peruvian cryptocurrency token. It was based on the same cryptographic foundation used by Bitcoin and others (among which, the original or pioneering of crypto-graphical currencies was Wei Dai’s B-money). This token was not widely adopted, and because it was based on a widely used system it had no other distinctive aspect apart from the fact that it was Peruvian. Later, at the beginning of 2017 it occurred to me to develop a currency that would be the first of its kind, not comparable with Bitcoin which is the third development of a technology, but with B-money (being the original one). This currency is “SoundCoin.pro” (http://soundcoin.pro), the first crypto-sonorous currency in the world. It is clear that B-money like SoundCoin.pro are coins that start a technology, which then normally require years of development with people dedicated to researching the subject, to get a “Bitcoin” or what in the future could be the successor to SoundCoin.pro. This does not change the fact that the first crypto-sonorous currency in history was at the same time the first Peruvian cryptocurrency. […]Translated from Spanish | November 2018 – Gaetano Dellepiane » www.facebook.com
As of this year 2020, in December there are still no updates to the original SoundCoin’s site. The release of compiled binaries for multiple platforms of the “DSH7” (also known as “GDSH7”) and its future source testing on quantum computers towards token optimization, will probably be the only public SoundCoin.pro related projects for the following year. Remember you can always contact for any inquiries using the site’s original email or registration form.
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The COVID-19 pandemic has slowed down development plans. Still, all related projects are going and a first phase is expected to be up and running next year!