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Developing drivers for custom SoC audio solutions can be a challenge.  The Linux kernel has built-in support for SoC audio chips, and understanding its architecture can help in developing drivers for custom hardware.  Three main

TSVCIS Improves Speech Quality In tactical secure voice communication devices, there are two common impairments to the speech quality: adverse acoustic noise environment and noisy RF channels. In order to combat these issues, the Tactical

MELPe TSVCIS Vocoder Software Tactical Secure Voice Cryptographic Interoperability Specification (TSVCIS) was developed to provide interoperability between Waveforms utilizing different vocoder rates, levels of encryption and forward error correction. TSVCIS specifies both Narrowband (NB) and

TSVCIS Cryptographic Features In military communication devices, securing the data from adversary eavesdroppers is of utmost importance. The Tactical Secure Voice Cryptographic Interoperability Specification (TSVCIS) was written to follow common practices in cryptography for robust

VOCAL’s PC video software solutions enable rapid development of video communication and video processing applications on PC platforms such as Microsoft Windows and Linux.  Our software can be built on low-level APIs such as Windows

The goal of an optimal beamformer is to minimize the interference and noise sources, while preserving the desired signal in a specific direction. The solution to this constrained minimization problem is the well-known Minimum Variance

An important goal of many multi-mic sound capture devices is to provide a directional signal to noise ratio improvement, while consuming as little power as possible. Acoustic Beamforming of signals in the audible hearing range

This article will provide a short summary of the different categories of digital audio watermarking embeddings and detection. The main differentiation of watermarking methods is between time domain and transform domain solutions. The general additive

There are many methods to digital audio watermarking, as discussed in Categories of the Digital Audio Watermarking Embeddings and Detection. This article will focus on the echo-based solutions which are informed time domain solutions. This