Lyric discussion by NicCage 

Cover art for Low Tide lyrics by J. Arthur Keenes Band, The

Pretty sure its "sine wave" not saw wave

A saw wave is common in music and in the context to the lyrics makes more sense than "sine wave" since saws cut and sines do not. Also, I have a feeling if this song was played in an oscilloscope it would have a saw toothed waveform.