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Funny thing is that I'm currently drinking cold brew that I prepared on my acoustic cavitation brewer. It's called Osma Pro. The company that made it sadly did

Funny thing is that I'm currently drinking cold brew that I prepared on my acoustic cavitation brewer. It's called Osma Pro. The company that made it sadly did not survive, and they took a lot of heat (no pun initially intended) for the price point and various complaints about how it worked. https://www.engadget.com/osma-pro-cold-brew-coffee-machine-review-131552500.html https://www.engadget.com/osma-pro-cold-brew-coffee-machine-r... Luckily, mine works great and I like it a lot. I use it every morning. Takeaway point: maybe Google your idea to see if other people have also had it before describing it as new.

triceratops 2y ago
> The system connects a bolt-clamped transducer with the brewing basket via a metallic horn – transforming a standard espresso filter basket into a powerful ultrasonic reactor. Now it can be done without shelling out $695 for a dedicated machine. That's progress. I wouldn't be so dismissive.
- iancmceachern 2y ago
  But you have to shell out $10k for a commercial ultrasonic welder from Branson, etc. Just the horn they show in the paper probably cost $6k to make. I wouldn't be too dismissive.
  - daniel_reetz 2y ago
    Also it will be punishing for pets and MEMs microphones.
  - triceratops 2y ago
    It's a prototype.
  - fallat 2y ago
    What? I went on Aliexpress and found a 40KHz transducer for $40. You can 3D print the attachment, can't you?
    - iancmceachern 2y ago
      A woofer from AliExpress is not a speaker with amp you can use for University level audio work. I expect they used something like these: https://www.emerson.com/en-us/automation/branson https://www.emerson.com/en-us/automation/branson You cannot 3d print anything in the ultrasonic chain, they need to be machined from specific metal, that's why the horns cost so much.
      - parineum 2y ago
        > A woofer from AliExpress is not a speaker with amp you can use for University level audio work. We're talking about coffee here...
        iancmceachern 2y ago
        Exactly! Wars have been fought over coffee, people regularly spend thousands for coffee machines. There are entire companies that exist just to cater to this market. Me, I'm a tea guy.
        JoBrad 2y ago
        A wholly different set of wars
      - fallat 2y ago
        I looked up "transducer" and it seems to be what you'd need. But! You seem to have found where I was wrong: the horn. The horn seems to be the actual expensive part here. They could start a business I guess selling these en-masse. If anyone has any ideas how a maker could create this within reason please reply.
        iancmceachern 2y ago
        You can't really sell them in big quantities because they're typically custom to the task. They need to be custom shaped for each application.
  - deleted 2y ago
    [deleted]
  - bongodongobob 2y ago
    They make ultrasonic jewelry cleaners for $75 that should work just fine. You're referencing something that is intended to be used with hundreds of gallons of water.
    - iancmceachern 2y ago
      I'm just talking about the paper. If they had referenced what you mention I would have referenced that
- karaterobot 2y ago
  > However, engineers from UNSW have now developed a new way to make cold brew coffee in under three minutes – just like a regular hot brew – without sacrificing on the taste experience. I think the commenter you're responding to was calling out the use of the word 'new' (which is used five times in the article) to describe the process, when it's evidently not new at all. The commenter didn't say anything about the price point, and neither does the article.
Alex3917 2y ago
I hope the creator does another run of the original Sora Pot, I would buy that in a heart beat.
kjkjadksj 2y ago
$695 isn't even bad, have people seen what even an entry level espresso machine can cost?
hobolord 2y ago
There's also this ultrasound company that sells lab equipment, but has a cold brewing via sonification page as well https://www.hielscher.com/ultrasonic-extraction-of-caffeine-and-other-active-compounds.htm https://www.hielscher.com/ultrasonic-extraction-of-caffeine-...

triceratops 2y ago

> The system connects a bolt-clamped transducer with the brewing basket via a metallic horn – transforming a standard espresso filter basket into a powerful ultrasonic reactor. Now it can be done without shelling out $695 for a dedicated machine. That's progress. I wouldn't be so dismissive.

iancmceachern 2y ago
But you have to shell out $10k for a commercial ultrasonic welder from Branson, etc. Just the horn they show in the paper probably cost $6k to make. I wouldn't be too dismissive.
- daniel_reetz 2y ago
  Also it will be punishing for pets and MEMs microphones.
- triceratops 2y ago
  It's a prototype.
- fallat 2y ago
  What? I went on Aliexpress and found a 40KHz transducer for $40. You can 3D print the attachment, can't you?
  - iancmceachern 2y ago
    A woofer from AliExpress is not a speaker with amp you can use for University level audio work. I expect they used something like these: https://www.emerson.com/en-us/automation/branson https://www.emerson.com/en-us/automation/branson You cannot 3d print anything in the ultrasonic chain, they need to be machined from specific metal, that's why the horns cost so much.
    - parineum 2y ago
      > A woofer from AliExpress is not a speaker with amp you can use for University level audio work. We're talking about coffee here...
      - iancmceachern 2y ago
        Exactly! Wars have been fought over coffee, people regularly spend thousands for coffee machines. There are entire companies that exist just to cater to this market. Me, I'm a tea guy.
        JoBrad 2y ago
        A wholly different set of wars
    - fallat 2y ago
      I looked up "transducer" and it seems to be what you'd need. But! You seem to have found where I was wrong: the horn. The horn seems to be the actual expensive part here. They could start a business I guess selling these en-masse. If anyone has any ideas how a maker could create this within reason please reply.
      - iancmceachern 2y ago
        You can't really sell them in big quantities because they're typically custom to the task. They need to be custom shaped for each application.
- deleted 2y ago
  [deleted]
- bongodongobob 2y ago
  They make ultrasonic jewelry cleaners for $75 that should work just fine. You're referencing something that is intended to be used with hundreds of gallons of water.
  - iancmceachern 2y ago
    I'm just talking about the paper. If they had referenced what you mention I would have referenced that
karaterobot 2y ago
> However, engineers from UNSW have now developed a new way to make cold brew coffee in under three minutes – just like a regular hot brew – without sacrificing on the taste experience. I think the commenter you're responding to was calling out the use of the word 'new' (which is used five times in the article) to describe the process, when it's evidently not new at all. The commenter didn't say anything about the price point, and neither does the article.

Alex3917 2y ago

I hope the creator does another run of the original Sora Pot, I would buy that in a heart beat.

kjkjadksj 2y ago

$695 isn't even bad, have people seen what even an entry level espresso machine can cost?

hobolord 2y ago

There's also this ultrasound company that sells lab equipment, but has a cold brewing via sonification page as well https://www.hielscher.com/ultrasonic-extraction-of-caffeine-and-other-active-compounds.htm https://www.hielscher.com/ultrasonic-extraction-of-caffeine-...