Ok cool people! I got the first prototype working: # sinegen.jl
#= Just a simple generator of sine waves. It even records stuff! =# using WAV # User defined stuff: # Define Sample Frequency: Fs = 96000# Hz # Define Frequency of Wave: f = 440 # Hz # Define Duration: T = 10 #s # Define Audio File variables: nbits = 32 # Format: fformat = "wav" # Define Audio Driver and AudioDevice for playback adriver = "alsa" adev = "hw:1" # Execute: # Time window: t = (1/Fs) * collect(0:(T*Fs - 1)) #s # Signal: y = sin(2π*f*t) # File Name: fname = "Sine $f.$fformat" # Save the sine wave: wavwrite(y,Fs,nbits,fname) # Set Driver and device for sox: ENV["AUDIODRIVER"] = adriver ENV["AUDIODEV"] = adev # And now, play it with sox from command line. # run(`play -b $nbits -r $Fs $fname`) # To record for a lenght of time T: # run(`rec -b $nbits -r $Fs Output.wav trim 0 $T `) # To play and record simultaneously: run(`play -b $nbits -r $Fs $fname` & `rec -b $nbits -r $Fs Output.wav trim 0 $T `) It is using sox as suggested above. Do you have any particular suggestion about calling these two commands simultaneously in the last line? On Wednesday, 20 January 2016 00:15:45 UTC, CrocoDuck O'Ducks wrote: > > Wow! Sounds amazing! Can't wait for that! > > On Monday, 18 January 2016 23:42:30 UTC, Spencer Russell wrote: >> >> AudioIO is going to be going deprecated soon in favor of a family of >> packages that are each a bit more focused and simpler to interface with. >> They’re not quite release-ready but have been making a lot of progress >> lately, and I wanted folks to know what’s coming before you sink a bunch of >> time into working with the AudioIO implementation. Currently there’s a >> mostly working JACK library, and I’ll probably port over the PortAudio >> support from AudioIO after that. >> >> -s >> >> On Jan 17, 2016, at 1:30 PM, CrocoDuck O'Ducks <[email protected]> >> wrote: >> >> Hi there! >> >> I have a number MATLAB scripts that I use for electro-acoustic >> measurements (mainly impulse responses) and I would like to port them to >> JULIA. I also written the data acquisition in MATLAB. It works by streaming >> the test signal to the soundcard outputs while recording from the soundcard >> inputs. I would like to implement that as well. I was looking at AudioIO >> but there are few issues: >> >> >> - I cannot find documentation/examples on how to record from >> soundcard input. >> - I cannot find documentation/examples on selecting the audio device >> to use. >> - I cannot find documentation/examples on setting sampling variables >> (it is in my best interest to use the highest sample rate available). >> >> Are these things possible with JULIA? I think I can use aplayer and >> arecord through JULIA (I am on Linux), but I was wishing to have all the >> code contained within JULIA. >> >> Many thanks, I hope you can point me in the right direction. >> >> >>
