GNU OCTAVE AUDIOREAD PROCESS MICROPHONE INPUT SOFTWARE

Once Audio or Speech is stored on computer then any standard software like Matlab, Scilab or Octave can be used to access those files and can be used to perform further processing. Some of them are *.mp3, *.wav, *.wma, *.ogg, *.flac etc. There are several file formats available by which sound files or speech signal can be stored on a computer. 1: Block Diagram of a typical Audio/Speech Signal Processing Inside computer this digital sound is stored in a form of a file on hard disk or any other storage media.ДЇig. Speaker speech or audio signal from any other source first converted to electrical (analog) signal through a transducer (or microphone) then this analog signal is converted into digital signal with the help of ADC (Analog to Digital Converter). For our tutorials we will be using Matlab software for writing all kind of processing algorithms.ДЇigure 1 shows the block diagram of above stated procedure. Before doing any processing on audio/speech signal, it is required to either record audio/sound or read the pre-recorded audio/sound signal stored in memory of computer into processing algorithm. Audio and Speech signal processing is quiet an interesting field and find its application in several areas like speech to text conversion, speech recognition, speaker recognition and biometric authentication.

Gnu octave audioread process microphone input