I would like to know what kind of techniques you use to create a realistic sounding vibrato on a stringed instrument: Strings, guitar, bass, etc.
I use pitchbend myself, but to make it sound right you actually need to have a volume control to follow the pitch-vibrato - this can be seen in an audio-editor. Is there a way to automize this - or can you use LFO\'s (volume+pitch) with good results?
I carried out spectral/amplitude analysis on actual samples of vibrato strings. A satisfactory approximation can be obtained by adding both tremolo (LFO1, control depth = 250) and vibrato (LFO3, control depth = 25), frequency 5.0 - 6.0 Hz to vibrato-free samples.
Hope it helps.
I\'m using vibrato-free samples, obtained by processing vibrato samples by spectral analysis. Vibrato/tremolo is applied to the harmonic vs noise component with a different weight.
As you suggest, further realism can be obtained by modulating the frequency of vibrato/tremolo with external controllers.