How can I correct the queue in dsp.AudioRecorder?

I am trying to create a plot of a series of sound signals (to ensure that the signal received by my subjects is the correct one)register through a microphone. I have the simple set up using dsp.Audio Recorder, but every time I run it I get a Warning that says that the queue has been overrun. Also, in the plot that registers the sound the x axis is is kHz, when I need Hz.

Can you help me to modify these two little things?

This is the code:

%% Microphone analisys SamplesPerFrame = 512; Microphone = dsp.AudioRecorder('QueueDuration',0.2,'DeviceName','Built-in Microph','SamplesPerFrame',SamplesPerFrame,... 'NumChannels',1,'OutputDataType','double'); Fs = Microphone.SampleRate;

Spectra = dsp.SpectrumAnalyzer('RBWSource','Property','SampleRate',Fs,'TwoSidedSpectrum',false,... 'SpectralAverages',20,'FrequencyScale','Log');

%% Stream tic; while toc < 10 % Read frame from microphone audioIn = step(Microphone);

% View audio spectrum step(Spectra,audioIn); end

%% Terminate release(Microphone) s = []; release(Spectra) s.Spectra = Spectra;

And this is the warning that comes up: Warning: The queue has overrun by 48013 samples. Try increasing queue duration, buffer size, or throughput rate.

Thank you.