| Audio Filter |
Article Index for Audio |
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Information AboutAudio Filter |
| CATEGORIES ABOUT AUDIO FILTER | |
| filter theory | |
| audio engineering | |
| electronic music | |
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In its simplest form, an Audio filter is typically designed to pass some frequency regions through Unattenuated while significantly attenuating others. In some applications, such as in the Design of Graphic Equalizer s or CD players, the filters are designed according to a set of objective criteria such as Pass Band , pass band attenuation, stop band, and stop band attenuation, where the pass bands are the Frequency ranges for which audio is attenuated less than a specified maximum, and the stop bands are the frequency ranges for which the audio must be attenuated by a specified minimum. In more complex cases, an audio filter can provide a Feedback loop, which introduces Resonance (ringing) alongside attenuation. Audio filters can also be designed to provide gain (boost) as well as attenuation. In other applications, such as with synthesizers or sound effects, the aesthetic of the filter must be evaluated subjectively. Audio filters can be implemented in analog circuitry as Analog Filter s or in DSP code or computer Software as Digital Filter s. Non-linear filters are also used in audio applications: for example, Compressors , Fuzz Box es, Ring Modulator s. Generically, the term 'audio filter' can be applied to mean anything which changes the Timbre , Harmonic content, Pitch or Waveform of an audio signal. SEE ALSO |
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