Filter

This user-fun removes all the frequencies higher than the sample rate.

This patch is quite developed and we see only the part regarding to the user fun. The armonics sub-patch builds a series of "how many harmonics" for each incoming frequency. Each harmonic amplitude serie has progressively amplitude "dB step" expressed in decibel.

• The function om< checks the frequency of each component,
• The function omif passes only the frequencies lower than the sample rate and removes the higher one.