äänikorttis

An äänikortti, often translated as sound card or audio interface, is a hardware component that is responsible for processing and outputting audio signals. In a computer, it acts as an interface between the digital audio data and the analog sound that is played through speakers or headphones. It also handles the input of audio from microphones or other audio sources.

The primary function of an äänikortti is to convert digital audio information into analog electrical signals that can be amplified and reproduced as sound. Conversely, it converts analog audio signals from input devices into digital data that a computer can process, store, or transmit. This conversion is performed by digital-to-analog converters (DACs) and analog-to-digital converters (ADCs), respectively.

Modern äänikortit offer a range of features, including multiple input and output channels, support for various audio formats and sampling rates, and often include built-in digital signal processing (DSP) capabilities for effects like equalization and surround sound. They are crucial for tasks such as music production, gaming, video editing, and general multimedia playback. External äänikortit, connected via USB or other interfaces, are also common for users seeking higher audio quality or more advanced features than integrated motherboard audio. The quality of an äänikortti can significantly impact the fidelity and clarity of sound reproduction and recording.