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Serial over IP Integrated Communicator

The VOCAL Integrated Communicator series (VIC-X) enable licensees to deploy a variety of standards-based next generation SoIP product configurations with extensive features. VoCAL’s highly optimized On-OneTM DSP technology is used to reduce system cost by

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Comb Filtering for Speech Enhancement

Comb filter is a filter with multiple pass and stop bands. In acoustics, comb filtering is used to described the phenomena when two sound waves collide. These two sound waves can be in phase or

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SAMS MV-90 xi Meter Polling

Itron’s MV-90 xi platform is a popular and vital meter management system among utility companies. MV-90 xi polls a large range of meter devices from different manufacturers to gather usage data and statistics. Various TIM

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Complete Communications Engineering VoIP Audio Video Fax Modem Services Software Modem & Fax Cloud/VM, Datacenter and IOT/M2M support of Legacy Analog Modems running on X86 and more. SIP Analog Modem and Fax Servers. Lawful Interception.

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Robust Maximum Directivity Factor Beamforming

Maximum Directivity Factor (DF) beamforming is a generalized case of the Superdirective beamformer where the desired look direction and the inter-element spacing is small. It was shown in, the Microphone Array Acoustic Beamforming Compromise, that

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Forward Error Correction – Hamming Codes

Richard Hamming invented Hamming codes in 1950, and they are still utilized today. Applications where the bit error rate is low, but errors cannot be tolerated, Hamming codes provide an computationally efficient encoding and decoding.

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Concentric Circle Microphone Array Design

The design of a microphone array plays an important role in the spatial selectivity of an acoustic beamformer. For acoustic beamforming for speech applications, the target frequency range is typically from 200 to 8000Hz. Small

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The Microphone Array Acoustic Beamforming Compromise

The challenge of wideband acoustic beamforming is the directivity of the microphone array is frequency dependent. For acoustic beamforming for speech applications, the target frequency range is typically from 200 to 8000Hz. With Delay-and-Sum beamforming,

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Subband Domain Adaptive Noise Cancellation

The main advantage of subband adaptive filters (SAF) is that they provide better steady-stateconvergence for LMS type adaptive algorithms over the fullband implementations with reducedcomputational complexity. SAF as are commonly applied to acoustic echo cancellation

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