5 ms·
wow, that microphone array you linked costs USD$750! Are there any cheaper alternatives?
by tchow 10y ago
wow, that microphone array you linked costs USD$750! Are there any cheaper alternatives?
- vidarh 10y agoXmos mainly sells development kits to showcase their chips - that's why they're that expensive.
- IshKebab 10y agoNot that I've found yet, but the actual hardware on that board costs something like $10-15, so someone could easily make one. The high price is because it's a development board. (I think it's a silly to price development boards highly, but it is very common.)
- xyience 10y agoI'm curious, how would you recommend they be priced?
- frik 10y agoEvery comment that starts with "curious" seem to be spam on HN. Is this always the same guy or a bot? Almost every HN topic contains one of these "curious" comments...
- xyience 10y agoIt's a common English idiom, but even though I've been here over twice as long as your account date I can't say I've noticed an infestation of "curious" comments... though given curiosity is a hacker virtue, perhaps it's not surprising there may be more of it here? I still am genuinely curious how GGP would have dev boards priced instead -- the market is pretty much limited to students (the ones at good schools have the schools pay for the boards, or the schools get discounts) or professionals (who again expense through their company), what's the incentive to lower prices?
- dharma1 10y agoI hope a chinese manufacturer makes one soon. The teardown for Echo had the parts for a bit more than that, but you could do it cheaper, multichannel ADC and half a dozen MEMS mics. I guess drivers would be the time consuming bit
- alexforencich 10y agoThe board actually doesn't appear to have an ADC, the microphones output pulse density encoded digital data wich can be directly received and interpreted by the processor.
- whoisjuan 10y agoI think the Microsoft Kinect comes with a Microphone Array.
- xaduha 10y agoPS3 Eye too, 4 microphones AFAIK. Those had a big discount on Amazon recently. EDIT: Still are, 5 bucks. http://www.amazon.com/PlayStation-Eye-3/dp/B000VTQ3LU http://www.amazon.com/PlayStation-Eye-3/dp/B000VTQ3LU
- squeaky-clean 10y agoWelp, looks like I just bought 3, haha! Thanks!
- dharma1 10y agoI've got one knocking about in the drawer. Let me know if you get beamforming working on it. I think there are multi channel audio drivers for Linux/RPi for PS3 Eye
- benlower 10y agoYes Kinect has an array of 4 mics and can do audio beam forming. Plus there's a terrific SDK for Windows.
- voltagex_ 10y agoI said it in a thread about the Kinect - I think it's only 135 (ish) degrees of reception, and sometimes it can be more finicky than that. I'd love to get my hands on an open source array.