Subject: Can one sound wave distort another sound wave?

If Source A emits a sound wave towards Source B and vice versa, if an 
observer behind Source B (who is unable to measure Source B from his 
position) receives the sound wave from Source A, will that sound wave be 
measurably distorted by the sound wave from Source B? If so, is this also 
true for light waves? If so, how is this distortion taken into 
consideration when calculating stellar distance based upon redshift? i.e. 
If Source A shines a green spotlight at me, and I shine a red spotlight 
directly at Source A, what color light will I see coming from Source A?

Re: Can one sound wave distort another sound wave?