AES Convention Papers Forum

Practical Problems in Building Parametric Loudspeakers with Ultrasonic Piezoelectric Emitters

Document Thumbnail

In this paper we deal with some practical issues that one can encounter when building a parametric loudspeaker with ultrasonic piezoelectric emitters. We measured several of those transducers (with resonance frequency 40 kHz) available on the market, observing a strong nonlinear behavior of many of them. We also tested a hundred of piezoelectric emitters of the same series and studied the influence of the standard deviation of the resonance frequency and the sensitivity on the performance of the parametric loudspeaker. We conclude that, when constructing a parametric loudspeaker with low-cost piezoelectric emitters, the individual behavior of each of them should be considered. This allows to minimize the effect of their differences and, thus, improve the quality of the sound generated.

AES Convention: Paper Number:
Publication Date:

Click to purchase paper as a non-member or you can login as an AES member to see more options.

No AES members have commented on this paper yet.

Subscribe to this discussion

RSS Feed To be notified of new comments on this paper you can subscribe to this RSS feed. Forum users should login to see additional options.

Start a discussion!

If you would like to start a discussion about this paper and are an AES member then you can login here:

If you are not yet an AES member and have something important to say about this paper then we urge you to join the AES today and make your voice heard. You can join online today by clicking here.

AES - Audio Engineering Society