Piezo Speaker Question

HumanoidoHumanoido Posts: 5,770
edited 2009-03-12 - 08:07:26 in Accessories
Two piezo speakers give stereo sound.
What is the name of three piezo speakers sound?




  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    edited 2009-03-11 - 18:27:14
    3-channel audio? The only 'standard' I have seen that involved multiple channels died out in the 70's. It was quadrasound I believe. Of course we have surround sound, but it is usually 4, 4.1, 5.1, 6.1 or 7.1 channels. So yeah, I would say three audio sources would just be 3-channel sound. Take care.

    Chris Savage
    Parallax Engineering
    Chris Savage | Engineering Tech | Main Office: (916) 624-8333 | Direct to Tech Support: (888) 997-8267 | Website | Twitter | Google+
  • Phil Pilgrim (PhiPi)Phil Pilgrim (PhiPi) Posts: 22,289
    edited 2009-03-11 - 19:57:55
    It depends on what that third piezo is doing. For example, if it were a subwoofer smile.gif or a mixed-signal center speaker, it would still be considered stereo, in the sense that only two distinct sound channels are involved. BTW, according to the OED, stereo- comes from the Greek stereos meaning "solid" or three-dimensional. So any number of speakers could be considered "stereo" if it gives the illusion of immersion in a 3D sound environment. So the two-speaker systems we usually call "stereo", could also be called "biphonic" to distinguish them from systems with more sound sources. This is different from "binaural" sound, which is recorded with a head-shaped model having ear-implated microphones and requiring headphones to appreciate. With additional processing binaural sound transcends to the next level: "holophonic" sound. The demos on this page, when listened to with good-quality headphones, will make the hairs on your neck stand on end!

    “Perfection is achieved not when there is nothing more to add, but when there is nothing left to take away. -Antoine de Saint-Exupery
  • HumanoidoHumanoido Posts: 5,770
    edited 2009-03-12 - 08:07:26
    Chris & Phil:
    Wow, very good explanations. Thank you.
    The demo sounds were awesome. Great find!
    So three piezo speakers could be named
    "three channel stereo." I will use this terminology
    for the word definitions for the new Stamp 3D computer.

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