Audio Signal Recording using MATLAB

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Welcome viewers! In this video, it is shown that how one can record audio signals using MATLAB. Actually, there are many signal processing based projects which are very popular among students of Engineering & Technology and among hobbyists too such as, Speech Recognition, Voice command for robots and voice based control of machines and equipment, Giving various sound effects to musical signals i.e. echo, reverb, flange etc.
To implement such projects, the first step is to capture audio signal and take that into MATLAB so that one can process it and can apply appropriate algorithm on it.
In this video, it is shown that how one can,
* Record audio using laptop's inbuilt microphone in single channel and multi channel,
* Reading and writing audio files and
* Recording audio from external music player such as mobile phone connected via audio cable to laptop.

[@mehdiasgharzadeh5162]

Good job 👍

[@kdas4029]

Good 👍

[@exploringtechnologies9]

Thanks

[@sunitaverma5352]

You are super

[@daredevil6896]

Sir I am not good at coding can you give the codes for this audio signal processing pls my humble request

[@exploringtechnologies9]

Code is already in video. Please pause the screen and take snapshot and get printouts.

[@mehdiasgharzadeh5162]

What if we have hundreds of channels? Can matlab read them and do some computations? Tnx

[@exploringtechnologies9]

Stereo audio has 2 channels only. For more channels mixing, one has to go for specific multiplexing schemes such has TDM, FDM, CDM etc. For ex. 7.1 audio channels are mixed with Dolby. In such cases, u need to write program to demultiplex the channels.

[@vinayaktripathi8883]

Sir what is the benefit of having two channels when they have the same information?

[@exploringtechnologies9]

Two channels do not have same audio. They can have different audio to produce sound effect that seems moving from one end to another. This is known as stereo audio.

[@vinayaktripathi8883]

@@exploringtechnologies9 Ok thank you sir. I will read more about stereo audio.