AD3

The ad3 file extension is used for an ADPCM audio file format.

Adaptive Differential Pulse Code Modulation (ADPCM) codecs are waveform codecs which instead of quantizing the speech signal directly, like PCM codecs, quantize the difference between the speech signal and a prediction that has been made of the speech signal.

The ad3 file stores 3-bit compressed voice.

Přípona souboru ad3 souvisí s ADHOC, softwarem vyvinutým a používaným Interferometrickou skupinou Observatoře v Marseille k redukci 3D dat pocházejících z pozorování pomocí Photon Counting nebo CCD.

Obsahuje také obecné 2D moduly užitečné pro jednoduchou zobrazovací práci. Běžně se používá k redukci pozorování CIGALE, TIGER a PYTHEAS.

The ad3 file extension is also related to DAMA (Demand Activated Manufacturing Architecture).

The DAMA project (created in 1993) was part of the American Textile Partnership (AMTEXTM). DAMA represents a nationwide effort focused on increasing the competitiveness of the fiber, textile, sewn products, and retail industries. For purposes of this project, we collectively refer to these industries as the U.S. Integrated Textile Complex (ITC).

The support for AMTEX and the DAMA Project resulted from funding from the US Department of Energy (DOE) and a consortium of industry companies and universities.DAMA developed an inter-enterprise architecture and analysis methodology for supply chains that enables improved collaborative business across the supply chain.