Parametric speaker query

Discussion in 'General Electronics Chat' started by vanquish_uk, Mar 25, 2013.

  1. vanquish_uk

    Thread Starter New Member

    Dec 12, 2012
    8
    0
    Hi

    I am looking to see if it is possilbe to create a very simple and small parametric speaker which emits a repetitive 'pip' sound or 'beeping' that is very small and low powered. I understand that paramtric speakers are coming into their own at the minute and a recent success on kickstarter (SoundLazer) has made it more accesible however what I need it for is not for playing songs or voice recordings so I do not require the expense. Without going into too much detail as to what I want to use it for I would like it to emit a repetitve sound at a distance around 10m or more and have it powered by a common household battery.

    The closest example to something that I would like to build can be found at the pdf link below from a Japanese supplier and I believe it can play (probably quite poorly) audio and is about the spec I would like although it is mains powered (converting down to 12v 1amp). I am awaiting further details back form this supplier.
    http://www.nicera.co.jp/pro/ut/pdf/AS013AW3PF1(ENG).pdf

    here is the kickstarter link for those interested

    http://www.kickstarter.com/projects/1324892969/soundlazer


    Apologies if the details are slim but my understanding of electronics is basic at best and I am basically looking to see if I could apply the same repetitive signal from something like a rape alarm, car alarm and have it played through a small parametric speaker and if so how cheaply/efficiently this can be done. The breakdown list of components of the kickstarter project shows the main circuit board (audio processing) as the major cost so I do not want to over engineer the device.

    Any help appreciated, thanks in advance
     
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