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Pre-Class Music

Pre-Class Music. Keith Kothman, Audio from Interludes. Upcoming Events. AES Student Chapter Meeting, April 12, Noon (MET) Gene Radzik, Dolby Labs Evolution of High Resolution Digital Audio in an Era of Multichannel Surround EM | Four, April 15, 8 pm, Pruis

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Pre-Class Music

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  1. Pre-Class Music • Keith Kothman, Audio from Interludes

  2. Upcoming Events • AES Student Chapter Meeting, April 12, Noon (MET) • Gene Radzik, Dolby Labs • Evolution of High Resolution Digital Audio in an Era of Multichannel Surround • EM | Four, April 15, 8 pm, Pruis • AES Student Chapter Meeting, April 17, 2 pm, (MET) • David Miles Huber

  3. More Spectral Processing

  4. Spectral Filter (Pluggo Plugin) • VST Plugin (available in Peak and DP3) • Convolves input with 512-band IR. • Amplitude of each band of IR can be individually controlled by drawing in window. • Time-smearing is limited to 0.0116099773 seconds (512 samples/44100 samples). • Very useful to eliminate noise, or to create a multiple-peak IR for filtering.

  5. Using the Spectral Filter • In Peak, go to Plug-ins | VST | whatever insert number | Spectral Filter • In DP3, it is available in the audio plugins menu for each track. • Most of your musically useful range is in the lower third of the window.

  6. Spectral Processing in DP3 • Non-real-time effects, accessed through the Audio | Spectral Processing menu choice. • Allows for time compression, expansion (within percentage limits), transposition, and independent formant transposition. • Having independent control over pitch and formants can allow for transposition without losing characteristic timbre, or you can have timbral change without pitch transposition.

  7. Using Spectral Processing in DP3 • Real-Time DSP must be enabled for the soundbite you want to process. • You can time expand or compress soundbites • within the audio track editor by dragging on the end of the color bar for the soundbite. (Useful for setting a soundbite to an exact duration.) • within the Soundbites window by clicking on a soundbite, and selecting Spectral Processing from the Audio Menu.

  8. Using … DP3 (2) • As seductive as the 3D ball-in-room interface is, it isn’t very precise to use. • Set your time and transposition values in the dialog boxes. • You can save and load presets.

  9. Which Spectral Processor to Use? • SoundHack is the best Phase Vocoder. • Peak is the most useful Convolution tool (because it scales output gain to input gain). • Spectral Filter is very useful for precise filtering without noticeable time-smearing. • Drawback: isn’t time variable • DP3 has the only formant shifter.

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