1 / 15

Hooray or Sadly It’s Week Six This is the Final Lesson

Hooray or Sadly It’s Week Six This is the Final Lesson. Synthesizers. Lesson’s Objective. Explain the usage of the 5 most important synthesis modules: Oscillator Filter Amplifier Envelope LFO. Definition … Oscillator. Oscillator Produces Four Basic Waveforms Sine Pure Single Tone

nalanie-kyle
Télécharger la présentation

Hooray or Sadly It’s Week Six This is the Final Lesson

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Hooray or SadlyIt’s Week SixThis is the Final Lesson Synthesizers

  2. Lesson’s Objective Explain the usage of the 5 most important synthesis modules: • Oscillator • Filter • Amplifier • Envelope • LFO Conrad P Koch Jr

  3. Definition … Oscillator • Oscillator • Produces Four Basic Waveforms • Sine • Pure Single Tone • Single Frequency • Square • A Hollow Sound as in a Clarinet • Fundamental • Plus Odd Harmonics Frequencies • Sawtooth • As in a Stringed Instrument • Fundamental • Plus Odd and Even Harmonics • Noise • Or White Noise • Random Amplitudes • Occurring at Random Timing • Over Entire Frequency Band Conrad P Koch Jr

  4. Definition .. Filter A Device that Selectively Enhances or Inhibits Signal Amplitudes Over (Audible) Frequencies • Lo-Pass • Inhibits Amplitudes of Upper Frequencies • Most Used Filter in a Synth • Gets rid of “trilly and sharp” upper frequency “junk” • Hi-Pass • Inhibits Amplitudes Lower Frequencies • Band Pass • Enhance Amplitudes Over Specific Frequencies • Notch Filters • Inhibits Amplitudes Over Specific Frequencies Conrad P Koch Jr

  5. What’s Filter Resonance • Guitar Strings Create Resonance • The Volume Becomes Loud When the String is Struck. • “Box” Is Excited as one of the Guitar’s Natural Frequencies is Struck • The “Box” Resonates • At its Fundamental Frequency and • Its Many Harmonics • Filter Resonance Is Similar • Output Volume Increases • As a Result of Feedback to the Filter’s Input • When and only When a Harmonic Is Present • No Harmonics = No Resonance Conrad P Koch Jr

  6. The Amplifier • Not The Amp We Use to “Amp Up” An Audience • Rather One Used To Pretty Up The Vocal … or the Viola (But not the Sousaphone) • or to Create Special Effect • Want Some More Vibratto? • Use the LFO to Modulate the Amp • The Amp is Voltage Controlled • Gain Therefore Rapidly Responds to Modulated Input Conrad P Koch Jr

  7. What’s Subtractive SynthesisNot Asked for but offered as a bonus to those who stuck with me so far! • We Can Create Synthetic Sound If We Add Together Using an Additive Synthesizer • Lots and Lots of Sine Waves • Over Lots and Lots of Frequencies\ • With Just the Right of Amplitude Changes • Tedious … Very Computer Intensive • It’s Much Easier to Remove Sound Using Subtractive Synthesis • An Oscillator Creates the Frequencies • Filters Remove or Enhance Sounds at Desired Frequencies • ADSR Modulates And Creates Proper Voicing Conrad P Koch Jr

  8. The Envelope Maker … ADSR • Attack Delay Sustain Release • Used to Modulate Filtered Sound Conrad P Koch Jr

  9. Examples Taken from Online Source • http://music.tutsplus.com/ Conrad P Koch Jr

  10. Attack and Delay • Slow Attack • Slowly Evolves to 100% Sustain Strings?? • Fast Attack • Fast Delay Snare Conrad P Koch Jr

  11. Sustain • Short Sustain Sustain is (Duration of Time) Where Volume is Kept at a Fixed Level • Long Sustain • Short Bursts • Violin Sustain Conrad P Koch Jr

  12. Release • Sustain to Zero in Practically No Time • Produces a Staccato Sound As In This Jazz Organ Clip Conrad P Koch Jr

  13. The LFO • Lonely Forgotten Oscillator • WHOOPS the Low Frequency Oscillator • Lo Connotes Below Audible Frequencies … Usually!!! • From 1 Hz to 100 Hz • If you want Vibratto in Elvis Presley’s Voice • Try a Little LFO to Modulate the Voltage Controlled Amplifier and on the Voltage Controlled Oscillator • If You Want Elvis to Sound Like Alice Cooper • Try a Little LFO to Modulate the Voltage Controlled Filters • Or play Around … Experiment • Give‘im a Surreal “Wah Wah Wah” Effect • The LFO is Never Heard • But Modulates with a Big Impact Conrad P Koch Jr

  14. Reflections • Synthesizers are Indeed Pretty Cool Tools • Loudon Was Right to Include it Rather than Mastering • I Found a Lot of Parallels To Electronic Systems’ Design • Filtering … Resonance … the “Q” of a Filter • Interesting Course of Study • I Want to Try Forming Synthetic Words Conrad P Koch Jr

  15. Thanks • Thanks For Reviewing • Thanks For Sticking With The Course • Thanks For Keeping your Mind Active • It helps prevent Al Zheimers from Dwelling there I’m told Feel Free to communicate cpkoch@syzygy-llc.com Conrad P Koch Jr

More Related