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ITU G.711.0 Lossless Codec

ITU G.711.0 Software Lossless compression of G.711 a-law and mu-law data Configurable frame size (40, 80, 160, 240 and 320 samples) Optimized for DSPs, RiSC, CISC processors ITU G.711.0 compliant VOCAL offers the G.711.0 codec

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Fullband Information Aiding a Subband Echo Canceller

Subband adaptive filters (SAF) are commonly applied to acoustic echo cancellation (AEC) software solutions because they provide better steady-state convergence for LMS type adaptive algorithms over their time domain counterparts with reduced computational complexity. The

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Automatic Volume Control

Have you ever been on an important phone call and suddenly the background noise of the space you are in becomes significantly louder? Of course, then you are left trying to find a quiet place

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Multi-Mic Wiener Noise Suppression

A multi-mic noisy signal can be formulated as: $latex<\X_M(t,f)=\ \alpha_MS(t,f)+\beta_MN(t,f)>$, where is the S is the desired (speech) signal, and N is the undesired noise signal, $latex<\\alpha>$ and $latex<\\beta>$ are channel dependent impulse responses of

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Digital Audio Watermarking

Digital audio watermarking is a method to secure the copyright content of audio media. Digital audio watermarking is a method of data hiding, in which information is embedded into an audio signal, which can later

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TSVCIS MELPe Synchronization

TSVCIS MELPe Synchronization Tactical Secure Voice Cryptographic Interoperability Specification (TSVCIS) documents the requirements for over-the-air voice communications across Narrowband (NB) and Wideband (WB) Waveforms. Beyond ensuring interoperability between devices, this specification utilizes cryptography, forward error

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TSVCIS Forward Error Correction

TSVCIS Narrowband and Wideband Waveform Forward Error Correction Tactical Secure Voice Cryptographic Interoperability Specification (TSVCIS) was developed to provide a flexible, secure and adaptive over-the-air communication framework. TSVCIS established both narrowband (NB) and wideband (WB)

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Multi Mic Audio Signal Processing

Multi Mic Audio Signal Processing Multiple microphone systems provide additional spatial and reference noise information not available to single microphone systems. VOCAL offers a variety of multi-microphone (and microphone array) audio solutions using the latest

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