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Advanced Audio Recording

Sound Generation with Frequency Multiplication

During sound generation harmonics of a base frequency might be desired in order to add brightness to the sound. By simple step wise multiplication of the wave value with itself, harmonics can be achieved easily. Each multiplication generates a wave which is shifted up by one octave.


 Generating Harmonics with Multiplication

18 Bit precise Multiplication in a DSP: There is only a loss of 2 digits in maximum per step because of the reduction of dynamics by ratio 2 and some offset correction.


Sound Exciting by adding Harmonics

16 harmonics or more can be used to create an exciter:

Generating Harmonics with Exciting waves

Exciter with even (red) and odd (blue) harmonics often named as warm and cold frequencies.


© 2002 Jürgen Schuhmacher