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> It's also how you backed up/restored midi data from early synths. In a weird closing of the circle, I now store the internal sounds backup of my vintage Juno
by noizejoy 4y ago
> It's also how you backed up/restored midi data from early synths.
In a weird closing of the circle, I now store the internal sounds backup of my vintage Juno 60 synthesizer as a WAV file recorded from that tape backup output.
So the digital info of the internal synthesizers gets converted to analog audio in the synth, then passed as audio to my modern computer’s audio interface, which converts it to a digital representation of the analog audio.
And vice versa to restore the backup into the synthesizer’s memory.
Incidentally those backups are more reliable now than when using analog tape decks, since one doesn’t encounter physical tape degradation or a cassette deck “eating” the tape.
I haven’t done any testing with compressed audio formats, but I would expect even lossy formats to perform well, if one keeps the lossiness within certain bounds, so that the highest frequencies in the audio file are preserved.
- Someone 4y ago> I haven’t done any testing with compressed audio formats, but I would expect even lossy formats to perform well, if one keeps the lossiness within certain bounds, so that the highest frequencies in the audio file are preserved. MIDI as a compression format for that kind of audio data would be a lossy way to encode such an audio stream, and it certainly would perform well, so yes, such lossy formats do exist. Most research in audio compression has been done on compressors that exploit the limits of human perception, though, so of the shelf lossy compressors may not do very well.
- DontchaKnowit 4y agoCalling midi a form of lossy audio compression is a stretch. Its like saying whistling a tune is a lossy way to compress a song. Yeah you're transmitting information about the source but to call it lossy is an understatement.