Murata enhances 'World's thinnest' piezoelectric speaker, distortion reduced by 50%

By optimising the product's structure and using new materials, Murata says it has been able to reduce distortion and increase sound pressure level without any change in the speaker's size - 0.5mm thick. According to the company, distortion has been reduced by 50% in the voice frequency region of 2 to 4kHz, while sound pressure improvements have been made in the low frequency regions of 1kHz and below. Having such small dimensions, the series is suitable for use in narrow spaces and is often used in a variety of compact personal electronics devices. Using a piezoelectric device within the speaker means that no magnetic elements need to be used and since no electromagnetic interference is created it also reduces the likelihood of magnetic particles contaminating the speaker surface.