The United States Patent and Trademark Office (USPTO) has issued Lectrosonics a patent (U.S. Patent No. 7,225,135) for its Digital Hybrid Wireless technology.
Lectrosonics’ Digital Hybrid Wireless technology uses a proprietary algorithm to encode 24-bit digital audio information with no compression and low distortion into an analog format that can be transmitted in a robust manner over an analog FM wireless link. The result is much higher dynamic range than wireless systems using a compandor are able to offer.
A noteworthy characteristic of Lectrosonics’ Digital Hybrid Wireless technology lies in its ability to provide backward compatibility with earlier generation Lectrosonics wireless products when used in compatibility mode. By emulating the companding schemes of Lectrosonics 100 and 200 Series wireless systems using DSP, these earlier products can be integrated with the company’s newer systems. Compatibility with the companding schemes of other wireless equipment manufacturers can similarly be achieved.
David Thomas, Lectrosonics senior design engineer and inventor of the company’s Digital Hybrid Wireless technology, says, “Digital systems may be hard to beat in terms of audio quality, but they can't touch analog FM systems in terms of spectrum efficiency and long operating range. Enter Lectrosonics’ Digital Hybrid Wireless technology, which combines the best of both worlds. Its digital audio processing makes optimal use of the analog channel—transmitting an encoded signal that is both loud and wideband to soar over the noise. Of equal significance, Digital Hybrid sounds natural, even on the fringe of reception.”