10_CM0268_Audio_FX

10_CM0268_Audio_FX - CM0268 MATLAB DSP GRAPHICS 1 332 JJ II...

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Unformatted text preview: CM0268 MATLAB DSP GRAPHICS 1 332 JJ II J I Back Close Digital Audio Effects Having learned to make basic waveforms and basic filtering lets see how we can add some digital audio effects. These may be applied: As part of the audio creation/synthesis stage to be subsequently filtered, (re)synthesised At the end of the audio chain as part of the production/mastering phase. Effects can be applied in different orders and sometimes in a parallel audio chain. The order of applying the same effects can have drastic differences in the output audio. Selection of effects and the ordering is a matter for the sound you wish to create. There is no absolute rule for the ordering. CM0268 MATLAB DSP GRAPHICS 1 333 JJ II J I Back Close Typical Guitar (and other) Effects Pipeline Some ordering is standard for some audio processing, E.g : Compression Distortion EQ Noise Redux Amp Sim Modulation Delay Reverb Common for some guitar effects pedal: Compressor Auto Wah Booster Tremolo Phaser FD Clean VX Clean HW Clean US Blues BG Crunch Hall Room Spring Arena Tiled Room Delay Tape Echo Analog Delay Ping Pong Delay AMP Sim. ZNR Chorus Ensemble Flanger Step Pitch Shift COMP/EFX DRIVE EQ MODULATION REVERB DELAY AMP ZNR Effect modules Effect types Effect Types and Parameters Linking Effects The patches of the G1/G1X consist of eight serially linked effect modules, as shown in the illustration below. You can use all effect modules together or selectively set certain modules to on or off. * Manufacturer names and product names mentioned in this listing are trademarks or registered trademarks of their respective owners. The names are used only to illustrate sonic characteristics and do not indicate any affiliation with ZOOM CORPORATION. For some effect modules, you can select an effect type from several possible choices. For example, the MODULATION module comprises Chorus, Flanger, and other effect types. The REVERB module comprises Hall, Room, and other effect types from which you can choose one. Note : Other Effects Units allow for a completely reconfigurable effects pipeline. E.g. Boss GT-8 CM0268 MATLAB DSP GRAPHICS 1 334 JJ II J I Back Close Classifying Effects Audio effects can be classified by the way do their processing: Basic Filtering Lowpass, Highpass filter etc,, Equaliser Time Varying Filters Wah-wah, Phaser Delays Vibrato, Flanger, Chorus, Echo Modulators Ring modulation, Tremolo, Vibrato Non-linear Processing Compression, Limiters, Distortion, Exciters/Enhancers Spacial Effects Panning, Reverb, Surround Sound CM0268 MATLAB DSP GRAPHICS 1 335 JJ II J I Back Close Basic Digital Audio Filtering Effects: Equalisers Filters by definition remove/attenuate audio from the spectrum above or below some cut-off frequency....
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This note was uploaded on 01/24/2012 for the course CM 0268 taught by Professor Davidmarshall during the Winter '11 term at Cardiff University.

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10_CM0268_Audio_FX - CM0268 MATLAB DSP GRAPHICS 1 332 JJ II...

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