linuxaudio.org

Hey Patrick,
On Sat, 5 Jun 2010, Patrick Shirkey wrote:
>> Basically your signal chain should go:

quoted text
>>

>> Oscillators -> Filter in -> Output

>>                         ^

>>                         |

>>                       LFO

>>

[snip]

quoted text
>

> Not sure if the ascii came out correct. So what I need is a low pass that

> has two input connections? A CV input and a signal input?

>

> The LFO feeds the cv input and the oscillator/s feed the normal(?) input.

Using AMS, here's a nice ASCII-art patch.  I'm omitting

unused ports, envelopes, and the MCV input, assuming you can

figure that part out.
   +------+

   | VCO  |

   = Freq |    +------------+

   |      |    | Mixer 2->1 |

   | Sine =----= In 0       |

   +------+    |            |

            +--= In 1       |      +------+

   +------+ |  |            |      | VCF  |

   | VCO  | |  |        Out =------= In   |

   = Freq | |  +------------+      |      |

   |      | |                  +---= Freq |   +---------+

   |  Saw =-+                  |   |      |   | PCM Out |

   +------+      +-------+     |   |  Out =---= Out 0   |

                 | LFO   |     |   +------+   |         |

                 |  Sine =-----+              = Out 1   |

                 +-------+                    +---------+
Note that at low freqs, the Sawtooth wave will easily overpower the

Sine-wave, so you may have to play with the Mixer to get the mix you

want.
-gabriel

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