Real time plot audio wave by speaking to the microphone by MATLAB

Tutorial #2

Download Source Code (Time domain)

• It’s the same with the above video
• (Free P code) Download for MATLAB
• (M file) Donate 10 USD

Download Source Code (Spectrogram)

• Real time show spectrogram through microphone
• (M file) Donate 20 USD

Description

1. Use our microphone to record speech
2. Real time plot the signal in the figure

Function

sys = realTime_YW(fs, screen)

• Required Input Parameters

fs       Sampling frequency (Hz). Default is 16k.
screen   Screen width to show signal (sec). Default is 5 sec.

Example

Start the system by sample rate 16k and show 5 seconds signal.

sys = realTime_YW(16000,5);

Stop the system.

stop(sys.clock);
stop(sys.recorder);

Get the record speech, plot and play it.

s = getaudiodata(sys.recorder);
figure;
plot(s);
sound(s,16000);

👉 Tutorial Outline 👈