Build your own parametric speaker

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Download File: https://mirror.netcologne.de/CCC//events/hackerhotel/2025/h264-hd/hackerhotel2025-201-eng-Build_your_own_parametric_speaker_hd.mp4Download File: https://mirror.netcologne.de/CCC//events/hackerhotel/2025/webm-hd/hackerhotel2025-201-eng-Build_your_own_parametric_speaker_webm-hd.webmDownload File: https://mirror.selfnet.de/CCC//events/hackerhotel/2025/h264-sd/hackerhotel2025-201-eng-Build_your_own_parametric_speaker_sd.mp4Download File: https://dortmund.media.ccc.de//events/hackerhotel/2025/webm-sd/hackerhotel2025-201-eng-Build_your_own_parametric_speaker_webm-sd.webm

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• eng 1080p (mp4)
• eng 1080p (webm)
• eng 576p (mp4)
• eng 576p (webm)

• 15 min
• 2025-02-16
• 1.5k
• Fahrplan

In this talk I will show you the theory behind parametric arrays what is involved in making your own low-cost directional speaker

Parametric speakers are extremely directional speakers that produce audible sound by modulating an audible signal on top of an ultrasonic carrier. Commercial options have existed for a long time but are quite expensive for hobbyists.

Licensed to the public under http://creativecommons.org/licenses/by/4.0

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