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30 Cards in this Set
- Front
- Back
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What generate's Sound in Sound Synthesis Techniques?
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Oscillators
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What do we need to make Amplitude Modulation?
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Modulator Oscillator
Carrier Oscillator |
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as a resultof amplitude modulation you get.....
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Side bands
Lower: Carrier - modulation Freq Upper: Carrier+Modulation Freq |
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What is Amplitude Modulation?
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It is the control of one sound by another sound
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Amplitude Modulation has an offset so sound never .......
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goes to zero
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What is Ring Modulation?
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It is Amplitude Modulation
but with out the offset |
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Does Ring Modulation have a lower and upper sideband and a carrier freq
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just upper and lower no carrier frequency
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Harmonic Spectrum definition
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That of an interger Value
whole number multiple of this fundamental Freq of a vibrating object |
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Overtone definition
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resonant Frequency above the fundamental Frequency
may or may not be harmonic |
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First Freq ratio
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f to 2f
one octave |
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If one Frequency gets doubled what is that now?
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Octave
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2f to 3f
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5th
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3f to 4f
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4th
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4th to 5th
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Major 3rd
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how many cents are in a semitone?
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100
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How many cents are in a halftone
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50
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How many cents are in Wholetone
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200
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Vibrato?
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Frequency Pulsating
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Tremelo
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Amplitude Pulsating
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Fourier Analysis
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Process of decomposing a sound into its constituent Sine or Cosine.
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Fourier Synthesis
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The Construction of a periodic signal on the Basis of Fourier Coefficients Which give the Amplitude and Phase Angle of each component Sine Wave Harmonic.
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Instruments besides having Frequencies that also have . . .
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ADSR
envelope content |
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Sine Wave-
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No Harmonics
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Sawtooth Wave-
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Most Harmonics
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Square wave-
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harmonics in odd multiples
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Triangle
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Odd with lower harmonics
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Formant
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peaks in the Harmonic Spectrum of a complex sound.
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Does the formant change when you change the pitch
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No
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Frequency Modulation
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Controls frequency instead of amplitude and modulates it
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What do we get as a result of frequency modulation?
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carrier + Modulation Freq
Carrier + 2 x Modulation Freq Carrier + 3 x Modulation Freq Keeps going FOREVER |
