winsound not working in MATLAB 64 bit version for reading/writing from/to the sound card

Dear Mr/Mrs,

What is the alternative to use 'winsound' for MATLAB 64bit version? This used to work in previous MATLAB versions: daqinfo = daqhwinfo('winsound'); And I'm getting the following: Error using daqhwinfo (line 42) To learn about using data acquisition devices on the win64 platform, see the documentation on the session-based interface.

So I read a little bit, and apparently only 'ni' devices are supported for 64bit. So I tried: AI = analoginput('winsound'); And I'm getting almos the same: Error using analoginput (line 46) To learn about using data acquisition devices on the win64 platform, see the documentation on the session-based interface.

Probably I should try something like: s = daq.createSession('ni'); s.addAnalogInputChannel('???????')

What should I put in ???????? to read the soundcard?

Pablo

[Walter Roberson]

Your soundcard probably isn't made by NI (National Instruments)

[Daniel Shub]

Do you need to use the DAQ toolbox or can you just use standard "sound" commands?

[Pablo]

[SOLVED] I was able to get data out of the sound card using the following code. In my application, the record_off function triggers the record function again, in order to simulate continuous acquisition.

function reading_soundcard()
  global loops;
  loops = 2;
  fs = 44100; % Sampling frequency in Hz
  nbits = 16; % number of bits
  acq_ch = 1; % acquisition channel
  secs2rec= 1;
  % creating object for recording:
  lineinput = audiorecorder(fs, nbits, acq_ch);
  lineinput.StopFcn = {@record_off,lineinput};
  % The function recording_off will be called when the
  % recording is done.
  record(lineinput, secs2rec); % start the recording
end

function record_off(obj,event,lineinput)
    d = getaudiodata(lineinput, 'double');
    disp(['number of points recorded:',num2str(length(d))]); % 
end

[sandhya vishwakarma]

can you send me full code....

Answer 1

[Star Strider]

I suggest audiorecorder. I do not know what your application is, but this and its related functions may work for you. There are links to the others at the end of the documentation page for audiorecorder.

[Pablo]

Better later than never: Thanks for the suggestion. I was able to solve the issue by using audiorecorder. I will comment on my solution later on.

Answer 2

[Mario]

Unfortunately there is no alternative, if you want to use your standard sound card (this means if you want to use any internal/external microphone that passes through your sound card) you must use the 32 bits version of MATLAB and Data Acquisition Toolbox. Otherwise you need a NIDaq device (National Instruments Data Acquisition), they cheapest ones are around 100USD. Another compatible cheaper DAQ is the Digilent Analog Discovery.

Answer 3

[Sean de Wolski]

Perhaps:

http://www.mathworks.com/help/releases/R2013a/dsp/ref/dsp.audiorecorderclass.html

Answer 4

[shanxi Univercity]

I also have this problem.

[Pablo]

You can see my answer above. I hope that can help you.