Study guide for week 5:Sound editing IIIntroducing with AudacityKUM7088 Multimedia in Music EducationComposed byGerhard Lock
Audacity 2.02Simple free audio recording/manipulation programm [for multiple platforms:PC & MAC]http://audacity.sourceforge.net/download/To export sound files as mp3 an additional software is needed. It can be found onthe websites below, but while exporting sounds Audacity leads you alsoautomatically to the install websites:http://manual.audacityteam.org/o/man/faq_installation_and_plug_ins.htmlhttp://lame1.buanzo.com.ar
Audacity 2.02Open the programRead Quick help installed or web-basedSee Manual installed or web-basedSee Audacity Wiki: http://wiki.audacityteam.org/wiki/Audacity_Wiki_Home_Page
Audacity 2.02Introduction of basic functions: see also next slideGenerating sounds: Menu Bar → Generate → DTMF tones (e.g.)Add Tracks: Menu Bar → Add New → Audio (Mono) / → Stereo / → Label / → TimeRegion including waveforms is a virtual representation of the sound.Cutting/deleting in Audacity a region will not enable to restore the cutted/deleted part!Label track: to include verbal commentaries: Add Tracks (see above)... → Label track. UseCTRL+B to include a window to the Label track where to write and which can be moved freelyWaveform regions:increase/decrease view size → choose transport tool bar symbolactivating a region → choose transport tool bar cursor symbol and activate the amount ofa region you need while holding the mouse left buttoncopying to a new track → after activating a region use Ctrl + C, insert it to the new (activated)track (same stereo/mono like copied region) with Ctrl + Vmoving → choose transport tool bar symbol and move the region you need while holdingthe mouse left button
Audacity 2.02Interactive guide: http://manual.audacityteam.org/man/Main_PageKeep standardProject rate44100 HzIf sound is notplaying controlI/O settings:Menu Bar →Audacity →Preferences→ change intoPlaybackDevice: Built-in Output
Audacity 2.02Manipulating a RegionSee in detail: http://manual.audacityteam.org/man/Effect_MenuSpeed change: Menu → Effect (like Vinyl disc tempo changing principle causing proportional shiftof pitch up/down as well)Tempo change: Menu → Effect (changes the tempo preserving the pitch)Pitch change: Menu → Effect (enables to change pitches or frequencies, also fluently with slider)Save Project As .aup format: Menu → File (Audacity native project format)It is supposed to copy the original files into the project to ensure the projects functioning aftercopying/transport to another disc/stick, computer etc.Export: Menu → File (the whole project or Selection, e.g. WAV, AIFF, mp3 – needs LAME encoder(see slide #2)Import: Menu → File → Audio (nt WAV, AIFF, mp3) opening and inserting (also from CD).aup faili re-opening
Audacity 2.02Manipulating a RegionSee in detail: http://manual.audacityteam.org/man/Effect_MenuReverse = Reverses the selected audio, so that it will sound as if it is playing from the end to thestart.Normalize = Use the Normalize effect to set the maximum amplitude of a track, equalize theamplitudes of the left and right channels of a stereo track and optionally remove any DC Offset fromthe track (generally use -1 – -3)Gain/Amplify = Increases or decreases the volume of the audio you have selected.Noise removal = Removes constant background noise such as fans, tape noise, or hums. It willnot work very well for removing talking or music in the background. Normally you need to cleanyour own recorded sounds. It may be useful to normalize it first to get low leveled noise emergingas well. Sometimes un-cleaning may be an aesthetic choice, normally you should clean your files,because each sound (willingly included or not) will be affected by further manipulations and maycause unexpected artefacts and quality loss.Step #1: Get Noise profile → activate the part of the file/region with only noise and tell the program,what are the frequencies to removeStep #2: after activating the whole file/region/part of the region start the function again and pressOK (you may play with the detailed changing function, but normally the standard settings work fine)Pan = Panoram: left-right channel balanceDelay = RepetingReverb = Echo (different rooms)Paulstretch = Use Paulstretch only for an extreme time-stretch or "stasis" effect.Wahwah = Rapid tone quality variations, like that guitar sound so popular in the 1970s.
Audacity 2.02Use Audacity only for preparing (cutting, manipulating, denoising, normalizing)soundfiles.Audacity does not enable professional multitrack functions! Why?Cutting/deleting in Audacity a region will not enable to restore the cutted/deleted part!Moving region together causes their melting on they cant be differentiated (separately restored)later.Volume changing function is problematic, because it works to roughly and needs extendedzooming to get a qualitative result.Use for professional multitrack functions and refinement REAPER (or other professionalprogramms): See slideshow in WEEK 6.