| Back in 2011, Elektor presented a DIY 50-m range directive sound beam using an array of piezo ultrasonic transducers (up to 200) driven with...
All items tagged with Audio and PWM (4)
| Compared to analog audio amplifiers like Class-A, -B and -AB, digital Class-D amplifiers have much higher power efficiency allowing them to...
| Looking for an audio project? This article explores the design of a DIY 50-m range directive sound beam using an array of piezo ultrasonic t...
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| Although the concept of the pulse-width modulated or `Class-D` audio amplifier has been known since the late nineteen-forties, there has b...