Abstract: An echo suppression technique is provided in which speech sample energies are collected and accumulated over predetermined time frames. From this, a peak aggregate value and time delay are noted. This peak is generated by mathematical correlation between the historical output speech and the input speech. A moving average is applied to the results of the mathematical correlation. Once the time delay and gain are determined, the algorithm of the present invention uses this information to determine if an input sample is echo or a valid input, and if it is echo, the echo is suppressed.

Abstract: A system and method are disclosed for the licensing and managing media resources in a converged services platform. A novel central pool of resource points representing a licensed level of media resource capability is created, the central pool for the storage of all default and any additional licensed resource points represented by the converged services platform, where portions of the central pool are dynamically allocated to one or more media resource cards.

Abstract: The present invention provides a method and apparatus for providing conferencing services in a converged services platform operable to perform a variety of enhanced telecommunications services. The advanced conferencing algorithm embodying the invention incorporates techniques in each of four signal processing categories including noise gating, echo suppression, automatic gain control and DTMF clamping are employed to produce a high perceptual quality conference output for a conference of several hundred participants, and which is computationally cost effective.

Abstract: A media resources card for use with a converged services platform. The media resources card, which includes one or more arrays of digital signal processors (DSPs), s operable to perform a variety of communication services including recording and playback of voice recorded announcements. A caching arrangement is provided in which a given recording (file) may have either a persistence level or timer expiration attribute or both.