There are all kinds of specific technical answers that you might receive. However, the one general rule that I have found to be true with audio workstation setup is this: some system configurations will work, and some will not work, period.
You are putting together a house of cards made of computer hardware, computer software, audio subsystem architecture, ...
You can use an Audio to MIDI plugin to generate notes and some MIDI expressions. You can record this as a MIDI file or route its output within your host audio editor to a synthesizer plugin in it.
You can start with checking this Audio-to-MIDI plugins:
Midifier (There are audio examples at the end of the page)
Since these are plugins and you need ...
You're talking about a sampler. Anything else (an effect plugin) will eventually require an infinite amount of memory as you fill up its buffers faster than you can empty them. Then there's the problem with knowing when to start playing slowly.
Look for the varispeed elastic track modes on your DAW.
You're in luck then as the CV (Control Voltage) outputs for pitch and volume on your Etherwave will allow you to do exactly that with the addition of some other gear.
You'll need to get some other CV capable equipment such as moogerfooger pedals or a modular synthesizer. Doing this will open a wonderful world of weird sounds and possibilities.
There is a ...
Antares Kantos did this.
However, it was released around 2002, and appears to be no longer available from Antares, so I'm not sure it is possible to obtain a legitimate copy these days. A brief search suggests that there are sites which claim that it is freeware now, and possibly offer it for download, but I cannot vouch for those sites.
The general, brief ...
^^^^^^This will do exactly what your looking for, I literally use this plugin everyday. Its really easy to use and you'll get the results you want instantly. I highly recommend pitch n time pro.
I'd look for any encoder that can support MPEG-TS encoding for 30 channels. The problem you will run in to with doing 30 independent ffmpeg streams is that they will not properly interleave and you will likely get jumps when switching channels.
You need an encoder that can take in to mind all 30 streams and use a fixed clock to sync the packets of audio ...
How about embedding a smart contract into the audio using digital watermarking?
Essentially, a trusted encrypted ledger entry could embed the date (or any particular information) such that later on you could retrieve the value and compare it against what is in the ledger.
Don't know if that's a thing, but it sounds like it could work.
This might be a forensics question, the answer to which is is the ENF signal (Electrical Network Frequency) which is used in forensics to locate certain associated acoustic and electrical signals in time for forensic purposes
ENF is a technique commonly used in audio forensics. It requires analysts to have recorded ENF signals over a long period of time.
The best way to proceed in your case is to increase the signal to noise ratio as much as possible. Try a different location for the microphone - somewhere where is further away from the keyboard noise. Try speaking closer to the mic and use lower amounts of gain.
An software solution might not get you any satisfying results
I don't know if this will satisfy the "dirty" part, but you could use a free (freeware/open source) digital audio editor to get it done quickly and cheaply.
I'd suggest using Audacity. It's a popular, and in my experience, capable open source digital audio editor, which, with a little direction, you could quite easily utilize for all your needs. And because ...
As an experiment, use skype or hangout because everybody has it installed already, and you can hook it into the PA with some real soundcard. If you want to go further, use some sound server as Jack on iOs with seperate recording app and streaming app. That would be the only way around the noise reduction and echo cancellation algorithms mandatory in ...
Don't, just don't. Using smartphones as microphones for live sound is really highly ill-advised. You will have all kinds of network latency issues, feedback issues (as they are generally designed to be omni-directional), quality issues, etc. You can do it in a pinch for a recording maybe, but if you are using it for reinforcement, you are majorly asking ...