subject: Plantronics USB Headsets [print this page] The concept behind all Plantronics USB headsets is to ensure that the sound remains in analog form only where needed, between the user and the headset module. Everywhere else, it travels in digital form; protecting it from distortion of any form. Let us take an example of the Plantronics DSP 500. As the name suggests, this headset uses DSP for its sound processing. It comes with a 40mm speaker with 20Hz 20KHz frequency response. Speakers provide extremely high quality dynamic bass response, with no crackling and perfect treble even at the highest volume. It has 16-bit mono audio with 25dB noise rejection feature for background noise filter and frequency response of 100Hz-10Khz. Voice recording is ideal for conference calls or speech recognition. All Plantronics products aim to meet these standards and some even surpass them.
