How can i recording audio immediately?

I'm working with audiorecorder object for recording audio, with this code:

recObj = audiorecorder(8000,16,1)
recordblocking(recObj, 1);

audioarray = getaudiodata(recObj);
plot(audioarray)

I noticed that the registration doesn't start immediately, but it waits about 0.4/0.5 s. You can see this problem with this image:

I need that it starts immediately after i run the recording (also because i would like to create small (acquisition windows, about 0.2 s).

I also tried to use pause() and resume() but it has the same problem.

What can i do to solve this problem?

Thanks in advance

[Walter Roberson]

Use Audio System Toolbox

https://www.mathworks.com/help/audio/gs/real-time-audio-in-matlab.html

Answer 1

[Gaurav Garg]

Hi,

Given below is a command which will open example for you which will help you record the audio immediately.

openExample('audio/ReadFromMicrophoneAndWriteToAudioFileExample') 

Moreover, you can also modify the default properties of your audioDeviceReader object to reduce latency.

openExample('audio/CalculateLatencyDueToDeviceBufferExample') 

You can also go through this link for any information.

[Walter Roberson]

(The above uses Audio System Toolbox)