| try adding
nchnls_i=1
before the line with nchnls=2
to limit input to 1 channel
Victor Lazzarini
Dean of Arts, Celtic Studies, and Philosophy
Maynooth University
Ireland
> On 28 Jul 2019, at 14:34, Slobodan Ivanovic wrote:
>
> Hello there! I subscribe to the forum 'cause I'm learning Csound. I don't know why it doesn't work
>
> FILE
> #########################################
>
>
> ;CHANGE YOUR INPUT AND OUTPUT DEVICE NUMBER HERE IF NECESSARY!
> -iadc0 -odac0 -B512 -b128
>
>
> ;Example by Joachim Heintz
> sr = 44100 ;set sample rate to 44100 Hz
> ksmps = 32 ;number of samples per control cycle
> nchnls = 2 ;use two audio channels
> 0dbfs = 1 ;set maximum level as 1
>
> giSine ftgen 0, 0, 2^10, 10, 1 ;table with sine wave
>
> instr 1
> aIn inch 1 ;take input from channel 1
> kInLev downsamp aIn ;convert audio input to control signal
> printk .2, abs(kInLev)
> ;make modulator frequency oscillate 200 to 1000 Hz
> kModFreq poscil 400, 1/2, giSine
> kModFreq = kModFreq+600
> aMod poscil 1, kModFreq, giSine ;modulator signal
> aRM = aIn * aMod ;ring modulation
> outch 1, aRM, 2, aRM ;output tochannel 1 and 2
> endin
>
>
> i 1 0 3600
>
>
> #########################################
>
>
>
>
>
> OUTPUT
> #########################################
> ...audio buffered in 128 sample-frame blocks
> reading 512-byte blks of shorts from adc1 (RAW)
> PortAudio V19-devel (built Feb 12 2010 09:42:54)
> 0: adc0 (Built-in Microph [Core Audio])
> 1: adc1 (USB PnP Sound Device [Core Audio])
> PortAudio: selected input device 'USB PnP Sound Device'
> 0: dac0 (Built-in Output [Core Audio])
> 1: dac1 (USB PnP Sound Device [Core Audio])
> PortAudio: selected output device 'Built-in Output'
> *** PortAudio: error: -9998: Invalid number of channels
> closing device
> Failed to initialise real time audio output
> inactive allocs returned to freespace
> end of score. overall amps: 0.00000 0.00000
> overall samples out of range: 0 0
> 1 errors in performance
> Elapsed time at end of performance: real: 0.147s, CPU: 0.026s
> closing device
> #########################################
>
>
> It says "PortAudio: selected input device 'USB PnP Sound Device" but it does not work.
>
> Any suggestions?
>
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