äänikäsittelylaitteella

An äänikäsittelylaite, or audio processing device, is an electronic device used to alter or enhance an audio signal. These devices manipulate sound in various ways, from simple amplification to complex spectral shaping and spatial manipulation. They are fundamental components in a wide range of audio applications, including music production, live sound reinforcement, broadcasting, and personal audio listening.

The functions of audio processing devices are diverse. Some devices focus on adjusting the volume of an audio signal, such as amplifiers and compressors. Others modify the frequency content of the sound, like equalizers (EQs) which boost or cut specific frequency ranges to shape the tone, or filters that remove unwanted frequencies. Time-based effects, such as reverb and delay, create a sense of space and depth by simulating echoes and reflections. Modulation effects, like chorus and flanger, alter the sound by varying parameters such as pitch or amplitude, producing movement and character.

Audio processing devices can be found in both hardware and software forms. Hardware units are physical pieces of equipment, often found in recording studios or live sound racks. Software-based processors are integrated into digital audio workstations (DAWs) or exist as standalone plugins, offering flexibility and ease of recall. The design and implementation of these devices rely on principles of electronics, acoustics, and signal processing to achieve desired audio outcomes.