Hello!

Have you had a look at some of the release segment envelopes such as linsegr, expsegr, linenr etc?

Also you might need to filter your MIDI controllers to prevent 7-bit quatization noise (zipper noise) with 'port', ''portk' or a low-pass filter. This depends mostly on what it's controlling but your amplitude controlling 'kbreath' will almost certainly benefit with from some smoothing.
Try:
kbreath  port  kbreath, 0.02

Bye,
Iain

---

Date: Thu, 25 Jun 2009 04:18:21 -0400
From: jaikai10@gmail.com
To: csound@lists.bath.ac.uk
Subject: [Csnd] Question about Wind_controller Envelope

Hello csounder!!

I just start to learn 'csound'.

It is my first visit this mailing list and my first question.(nerves little bit...haha)  

I want make a instrument for wind_controller(akai ewi usb).

I use cc#2 as an envelope control. But it has a noise when I stop breathing and change note.

I tried to using 'xtratim and release' for smooth release. but this 'release' opcode need velocity off.(velocity off message is always after breath stop.)

I tried to using 'if ...kgoto' opcode with breath level. It did'n work, too. 

As far as I know, envelope generators are just available i-rate. 

I am trying to solve this problem, and need more information. (unfortunately I don't have any experience about programming language.)

Even though it is a stupid question, it is very important for me.(I can't sleep)

Would you please show me any opcode, tip ,hint or patch ?   

It is a simplified patch for the wind_controller.

I play this instrument in the Max/MSP

<CsoundSynthesizer>

<CsOptions>

-odac -idac -d -M0

</CsOptions>

<CsInstruments>

sr = 44100

ksmps = 32

nchnls = 2

0dbfs = 1

ctrlinit 1, 2, 0

instr 1

kcar chnget "car" 

kmod chnget "mod"

kndx chnget "ndx"

kcps cpsmidib

kbreath midictrl 2, 0, 1

a1 foscil kbreath, kcps,kcar, kmod, kndx, 1

outs a1, a1

endin

</CsInstruments>

<CsScore>

f 0 36000

f 1 0 4096 10 1

</CsScore>

</CsoundSynthesizer>

Thank you in advance.

P.S. : sorry about my bad English.~~~I hope that you understand what my question is.

 

   

---

Windows Live™: Keep your life in sync. Check it out.