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Speech Recognition Using the Raspberry Pi

aonsquared writes "In a previous Slashdot story, I demonstrated a voice-controlled robotic arm using the open-source speech decoder Julius. This time, I have managed to port the system to a Raspberry Pi to control the same robotic arm, and as usual, posted the tutorial and source code. Some negative reviews of the Raspberry Pi are starting to appear, and they're missing the educational point of this device — I'm hoping this will counter the naysayers, and help inspire a new generation of hackers, as well as also bring open-source speech recognition the same attention as proprietary solutions (i.e Siri) are getting!"

28 of 74 comments (clear)

  1. Re:Would be most interesting ... by CajunArson · · Score: 4, Interesting

    Lol... I ordered mine on March 3 and the last update I got says it might ship in about 2 weeks... maybe...

    I like a lot of things about Raspberry Pi, but they made a big mistake by overhyping the product. The next closest competitor I can think of is the Beagleboard, and while the Beagleboards are more expensive they aren't insane (still $100) and have a much more mature software and developer ecosystem.

    --
    AntiFA: An abbreviation for Anti First Amendment.
  2. Re:What do I use mine for? by i-reek · · Score: 5, Funny
    You could always give it to me.

    Then we solve both our problems :)

  3. Engadget review negative? by supremebob · · Score: 5, Insightful

    I wouldn't consider the Engadget review to be negative. They tried to use the board for things it wasn't designed to do (like play Youtube or Flash videos), and it failed to do so. Big deal. The people who are actually trying to buy these boards would likely know better.

    The reviewer didn't seem to have a clue what they were doing... they complained about having to type in the startx command to start the GUI, for pete's sake. If anything, the review did a better job of making Engadget look bad than the product they were reviewing.

    That said, it's easy to think of negative things to say about the Pi... like the lack of supply. I've been on the waiting list for one for over a month now, and I haven't even been given an estimated shipping date at this point.

    1. Re:Engadget review negative? by i-reek · · Score: 2

      The reviewer didn't seem to have a clue what they were doing ...If anything, the review did a better job of making Engadget look bad than the product they were reviewing.

      I couldn't agree more. In fact, every "negative" review I've heard/read has come down to unrealistic expectations of what a device with these specs can do.

      That said, it's easy to think of negative things to say about the Pi... like the lack of supply.

      As I said earlier to someone ... we could make some happy campers if those people disappointed with their Raspis passed them onto those people disappointed they haven't got one yet ...

    2. Re:Engadget review negative? by CajunArson · · Score: 4, Insightful

      When I first saw the Engadget review I thought it was a little bit off-kilter since it was trying to use the Pi for desktop & media playback use instead of for simple programming or embedded projects.

        Then I remembered that lots of the demonstrations shown off on the Raspberry Pi website show using the Pi for the same purposes, especially with the heavy emphasis placed on XBMC. I think part of the issue with the Raspberry Pi is that the developers need to focus more on realistic usage scenarios for the device so that reviewers have the correct expectations going into the review.

      --
      AntiFA: An abbreviation for Anti First Amendment.
    3. Re:Engadget review negative? by SilenceBE · · Score: 5, Informative

      I wouldn't consider the Engadget review to be negative. They tried to use the board for things it wasn't designed to do (like play Youtube or Flash videos), and it failed to do so. Big deal. The people who are actually trying to buy these boards would likely know better.

      The reviewer didn't seem to have a clue what they were doing... they complained about having to type in the startx command to start the GUI, for pete's sake. If anything, the review did a better job of making Engadget look bad than the product they were reviewing.

      That said, it's easy to think of negative things to say about the Pi... like the lack of supply. I've been on the waiting list for one for over a month now, and I haven't even been given an estimated shipping date at this point.

      "They tried to use the board for things it wasn't designed to do"

      Funny that you say that

      What’s a Raspberry Pi?

      It’s a capable little PC which can be used for many of the things that your desktop PC does, like spreadsheets, word-processing and games. It also plays high-definition video.


      http://www.raspberrypi.org/faqs

    4. Re:Engadget review negative? by LWATCDR · · Score: 3, Informative

      I think that the Pi was supposed to be a desktop system. It has a HDMI port and can decode 1080p video. That is a desktop device. Flash is a none starter for sure but YouTube should have worked.
      The Pi is really cool but I think it has real issues at this time.
      1. The GPU is not being used well. From what I hear X is not yet using the GPU for acceleration.
      2. Limited RAM.
      3. Slow IO. SD cards are not very speedy.
      The first they can fix. The third might be fixable with using a USB Hard drive or a NAS.
      It would be great if this could run say OpenOffice and play videos well. Schools and libraries could have whole labs of them all running form an inexpensive NAS and with a print server.
      As a hacking tool this is great. For a general education tool it could also be really good but limited right now. As a programing education tool it could be really good, Do they have Squeak running on it yet? I know Python is up and working and they have a BBC Basic for it.
      The thing is that this is a developers release. It isn't soup yet. It is really cool and full of potential but Endgadet was reviewing it as a finished product which it really isn't yet. I do think it is good that it showed it's curent limitations so the developers can work on eliminating them.

      --
      See my blog http://ilovecookes.blogspot.com/ for light hearted technical information.
    5. Re:Engadget review negative? by Svartalf · · Score: 5, Informative

      But it can do browsing and other things. The Endgaget reviewer went and did several boneheaded things- whether out of ignorance or deliberation will be left as a determination by the reader...

      XBMC does do what they're claiming it does. It DOES run Quake III:Arena. The thing is...you can't just nab any old Linux binary and run it. You have to code to leverage the GPU to get it to do many of the heavy load-lifting things and only the things they showcased before release have been made to work that way.

      The biggest thing (and they never changed their tune...you lot may have not been paying attention...) is that they've said from the beginning that this was intended for computer science education , not as a general purpose computer (though you CAN make it that way with a bit of effort- effort, I might add, that's being done by several of the distributions working on producing a version of their project for the R-Pi...).

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      I am not merely a "consumer" or a "taxpayer". I am a Citizen of the State of Texas
    6. Re:Engadget review negative? by Svartalf · · Score: 3, Insightful

      It needs software tuned/em for it. It CAN do all of those things. Expect Flash to play? Sorry...Flash for Linux isn't even available on ARM from Adobe except as an embedded application you have to bundle if you're an embedded systems vendor.

      There's more like that. The biggest problem YOU and others seem to have is what a PC really does and the like. A Pandaboard would've failed many of the review items that the Endgadget reviewer did. But...it's a dual-core A9 and it CAN do all those things...so long as you have applications. Lightspark might bring Flash to the R-Pi and other ARM devices...but you'll need to make it work with OpenGL ES before that'll happen.

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      I am not merely a "consumer" or a "taxpayer". I am a Citizen of the State of Texas
    7. Re:Engadget review negative? by oldredlion · · Score: 2

      I couldn't agree more. In fact, every "negative" review I've heard/read has come down to unrealistic expectations of what a device with these specs can do.

      Exactly. Some people seem to be expecting a low-cost general purpose device, rather than a cheap introduction to programming. Programming doesn't need expensive hardware, it needs thought and logic.

    8. Re:Engadget review negative? by Man+On+Pink+Corner · · Score: 2

      I couldn't agree more. In fact, every "negative" review I've heard/read has come down to unrealistic expectations of what a device with these specs can do.

      Maybe somebody should tell the Raspberry Pi people. As the author of the review repeatedly points out, he did nothing but evaluate the manufacturer's own claims.

    9. Re:Engadget review negative? by Man+On+Pink+Corner · · Score: 2

      Some people seem to be expecting a low-cost general purpose device

      Gee, I can't imagine where they could have gotten that impression.

      This just in: Marketing is important. It should not be left as an afterthought or as a secondary task for developers, any more than product development should be done by marketdroids in their spare time. Ric Romero has more at 11.

    10. Re:Engadget review negative? by i-reek · · Score: 2

      I wonder how the reviewer would go evaluating the Aberciser manufacturer's claims.

      Would he get a little shirty when he didn't get washboard abs and tons 'o' chicks?

      Or would he have a good look at what the thing actually was and begin his evaluation from there?

  4. CPU by Dan+East · · Score: 2, Insightful

    Shouldn't they be able to throw more powerful, dual-core CPUs into the Pi pretty trivially? It would mainly be a matter of whether there is enough demand at a higher price point. I would think a dual core, 1 GHz processor would make a tremendous difference spec-wise.

    I think one of the primary hurdles is that there are mobile-optimized apps, and then there are power-hungry desktop apps. The pi is technically a desktop machine from the software standpoint, but it really needs mobile apps due to its slow ARM CPU. For example, I'm sure Opera Mobile would perform fine on that hardware, but how do you get it to run without Android, Windows Mobile or iOS?

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    Better known as 318230.
    1. Re:CPU by Maddog+Batty · · Score: 2

      The fact that it can't run Quake ...

      Then again... http://www.raspberrypi.org/archives/1139

      --
      wot no sig
    2. Re:CPU by Svartalf · · Score: 3, Informative

      No. It'd raise the price up past where they're at right now. A dual-core config with a similar sweetheart deal on the SoC's is available as the Pandaboard- and it's priced at $179- there's a hint in that that MANY are missing, especially the reviewers without a clue that make themselves and the site actually look bad.

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      I am not merely a "consumer" or a "taxpayer". I am a Citizen of the State of Texas
    3. Re:CPU by Svartalf · · Score: 3, Insightful

      And run a browser properly? http://www.youtube.com/watch?v=0UWwUEPh9EI

      Quite simply, unless you know what you're doing, you're probably better off NOT trying to use/get one right at the moment. It's intended for technical and deep embedded type applications right at the moment. It COULD be a desktop replacement for some categories of things- but it's a bit raw for many of those uses right at the moment.

      Hell, unless you get it "right" you're not going to be able to use a Beagleboard, Beaglebone, or Pandaboard for a desktop replacement. It's very possible to do this with the R-Pi or any of those boards- but the reviewers in the large have been idiots or jackasses trying to do things that they honestly knew better or should have.

      --
      I am not merely a "consumer" or a "taxpayer". I am a Citizen of the State of Texas
    4. Re:CPU by Anonymous Coward · · Score: 4, Informative

      That's very unlikely. These devices achieve their low cost because of the System On a Chip (SOC) design. The board layout and everything else is built around that Broadcom SOC. Simply "swapping it out" with something else would mean respinning the entire board and having to resubmit for all their qualifications. It's not trivial by any means.

  5. Pi's great by networkz · · Score: 5, Insightful

    I got mine yesterday (after my co-workers tricked me into thinking I'd not get it)..

    It's slow like the Engadget guy said.. not up to HD media playback in a fast manner, though that should change once the software's optimised.

    However, it's crazy low power, size and features mean I can make my own mini-nas/access point/controller for my caravan which runs on solar.

    So many different ways to apply the Pi, as long as your aren't expecting it to be a fast desktop PC!

  6. Re:Would be most interesting ... by Anrego · · Score: 2

    Indeed.

    There is a metric tonne of interest out there. The community doesn't exist yet because no one can get their hands on the damn thing!

    That thing VIA is going to be putting out might end up crushing them if production doesn't ramp up soon.

  7. To those finding it hard to work with Raspberry Pi by KreAture · · Score: 2

    It's a full system devboard using proper operating system and coding-style, not a Arduino.
    It's not ment for anyone to just develop the next big thing but for people with a base level of competance.
    Sorry if this ruins your dreams.

  8. Custom code by jones_supa · · Score: 2

    Can I program some ARM code ground-up using RaspPi? A simple "operating system" or make it some embedded gadget. Is it worth it and where should I begin?

    1. Re:Custom code by rrohbeck · · Score: 2

      Maybe here.

  9. cross compiler by Chirs · · Score: 2

    It's easy enough to write some arm assembly and then cross-assemble it on another machine and copy it over.

    I wouldn't start from scratch though, you'd have to do full system bringup. Better to run your app in assembly on top of Linux.

  10. Re:What do I use mine for? by PT_1 · · Score: 2

    I have a Raspberry Pi, but now I'm more so sitting at the point of wtf do I use this for? I was originally thinking maybe some low power server to run a BNC or something small. Media player is another idea but I have enough devices that will play/stream media hooked up to my television.

    Have you considered getting one of the extension boards, which allow for circuit prototyping? I intend to use mine (when it arrives) to process the signal from a Nasa Jove receiver, but there are tons of other circuits you could build. It's probably true that everything you can do with a Pi you could also do with a standard PC; but it seems to me that things like the Pi, which fit on a stand-alone circuit, just seem more... Fun. :-)

  11. Re:no I/O pins by aztracker1 · · Score: 2

    Many routers actually have IO headers internally, as well as sometimes exposed via extra contact points on one of the ethernet ports... If you look at the OpenWRT developer forums you'll see that what you said isn't quite true.

    That said, having an actual video out is a pretty nice to have... Though when you need closer to a full system, there are other options at the $200 price range, mini/micro-itx etc. Though larger than a Pi or BeagleBoard, you'll get more power, flexibility and compatibility.

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    Michael J. Ryan - tracker1.info
  12. Re:Would be most interesting ... by hairyfeet · · Score: 2

    Well there is also the grandfather of them all,the Arduino which at $78 for the starter kit isn't bad at all, and if you want even cheaper they have the netduino for just $34, damned close price wise to the Pi. the nice thing about the Arduino is there are so many prebuilt modules you can just mix and match and build pretty much anything you want.

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    ACs don't waste your time replying, your posts are never seen by me.
  13. Re:no I/O pins by ArsenneLupin · · Score: 2

    Though when you need closer to a full system, there are other options at the $200 price range, mini/micro-itx etc. Though larger than a Pi or BeagleBoard, you'll get more power, flexibility and compatibility.

    If you're prepared to spend $200, you can have a gumstick or some cotton candy, both of which are not bigger than a USB stick, much smaller than a raspberry pie.