HRTF implementation in matlab I have set of HRIR( Head related impulse response) downloaded. I want to convolve it with an audio signal to generate 3D signal in Matlab.

I am new to this field. Is there any tutorials or can any one help me how to start
Each HRIR is meant to represent the acoustic impulse response from an audio source at a specified angle (relative to the head) to the ear canal.  There is no such thing as a 3D signal, but if you want to simulate audio from a given azimuth and elevation angle, just convolve your audio source with the corresponding HRIR as follows:

left_channel = conv(audio_signal,hrir_left_az_elev)
right_channel = conv(audio_signal,hrir_right_az_elev)


In this case, I am using hrir_left_az_elev to signify the HRIR that corresponds to the left-ear impulse response to a sound event at azimuth angle az and elevation angle elev.  How you actually code this up will depend completely upon the format of your HRIR data.