SPEAKER SYSTEM AND METHOD OF OPERATION THEREFOR

A patented speaker system, developed by Koninklijke Philips Electronics N.V., utilizes a unique approach to audio signal processing to achieve directional sound radiation. This innovative system employs the precedence effect and non-direct low-frequency audio radiation to provide directional cues while minimizing the size and positioning of speakers. The system's driving circuit generates two distinct drive signals for each speaker, filtered to specific pass bands and delayed to create a directional radiation pattern.

Key Takeaways:

• The patented speaker system comprises two speakers, with a driving circuit that generates two drive signals for each speaker, filtered to specific pass bands.
• The system utilizes the precedence effect and non-direct low-frequency audio radiation to ensure that directional cues are predominantly provided by the first speaker.
• The first speaker's audio signal is filtered with a first pass band, while the second speaker's audio signal is filtered with a second pass band that includes a frequency band below the first pass band.
• The second drive signal is delayed relative to the first drive signal to achieve the desired directional radiation pattern.
• The system's sound is directionally radiated with a notch towards the listening position, ensuring that the speaker's location is not detrimental to the overall audio experience.
• The patented speaker system is designed to replace large and bulky speakers with smaller and more remotely positioned speakers.
• The technology has the potential to be used in various applications, including home theaters and public address systems.
• The patent was filed under Application No. PCT/IB2011/050904 and published on September 22, 2011, under Publication No. WO/2011/114252.

Statistics:

• The patented speaker system utilizes a driving circuit that generates two drive signals for each speaker.
• The system employs a first pass band and a second pass band that includes a frequency band below the first pass band.
• The second drive signal is delayed by 213 required to achieve the desired directional radiation pattern.
• The system's sound is directionally radiated with a notch towards the listening position, providing a unique audio experience.
• The patented speaker system has the potential to improve audio quality in various applications, including home theaters and public address systems.

Sources:

• World Intellectual Property Organization (WIPO) - Publication No. WO/2011/114252.
• Koninklijke Philips Electronics N.V. - Application No. PCT/IB2011/050904.