Hello,how can I separate the audible samples from unaudible or less audible samples in audio file. I want to hide my secret message in less audible samples on the basis of frequency. So basically how can I find the frequency of samples.

I am doing thesis in Audio Steganography. How can i separate the audible portion of sample from inaudible or very less audible samples. The data has to hidden in inaudible samples so that there would be less distortion.

Answer 1

[Carlos]

The human ear can hear signals within 20 Hz to 20 kHz range. So you can apply a bandpass filter in this frequency range. If you are only interested in human voice the range would be 300 Hz to 3400 Hz