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

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Presentation on theme: "Hooray or Sadly It’s Week Six This is the Final Lesson Synthesizers."— Presentation transcript:

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

2 Conrad P Koch Jr Lesson’s Objective Explain the usage of the 5 most important synthesis modules: OscillatorOscillator FilterFilter AmplifierAmplifier EnvelopeEnvelope LFOLFO

3 Conrad P Koch Jr Definition … Oscillator OscillatorOscillator Produces Four Basic WaveformsProduces Four Basic Waveforms SineSine Pure Single TonePure Single Tone Single FrequencySingle Frequency SquareSquare A Hollow Sound as in a ClarinetA Hollow Sound as in a Clarinet FundamentalFundamental Plus Odd Harmonics FrequenciesPlus Odd Harmonics Frequencies SawtoothSawtooth As in a Stringed InstrumentAs in a Stringed Instrument FundamentalFundamental Plus Odd and Even HarmonicsPlus Odd and Even Harmonics NoiseNoise Or White NoiseOr White Noise Random AmplitudesRandom Amplitudes Occurring at Random TimingOccurring at Random Timing Over Entire Frequency BandOver Entire Frequency Band

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

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

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

7 Conrad P Koch Jr What’s Subtractive Synthesis Not 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 SynthesizerWe Can Create Synthetic Sound If We Add Together Using an Additive Synthesizer Lots and Lots of Sine WavesLots and Lots of Sine Waves Over Lots and Lots of Frequencies\Over Lots and Lots of Frequencies\ With Just the Right of Amplitude ChangesWith Just the Right of Amplitude Changes Tedious … Very Computer IntensiveTedious … Very Computer Intensive It’s Much Easier to Remove Sound Using Subtractive SynthesisIt’s Much Easier to Remove Sound Using Subtractive Synthesis An Oscillator Creates the FrequenciesAn Oscillator Creates the Frequencies Filters Remove or Enhance Sounds at Desired FrequenciesFilters Remove or Enhance Sounds at Desired Frequencies ADSR Modulates And Creates Proper VoicingADSR Modulates And Creates Proper Voicing

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

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

10 Conrad P Koch Jr Attack and Delay Slow AttackSlow Attack Slowly Evolves to 100% Sustain Slowly Evolves to 100% Sustain Fast AttackFast Attack Fast DelayFast Delay Snare Strings??

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

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

13 Conrad P Koch Jr The LFO

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

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


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