Reduced resonance burner

A burner apparatus for burning a pre-mixed gas and air mixture, the burner apparatus comprising:

• a generally cylindrical burner wall extending continuously from a first end to a second end, the burner wall having a cylinder axis, the burner wall including:
• a plurality of ridges, each ridge extending perpendicular to and concentrically around the cylinder axis;
• a plurality of grooves, each groove defined between adjacent ridges and including a pair of slopes, each slope including an area of permeability having openings defined therein from which flames can project, wherein the ridges and grooves are coaxially disposed relative to the cylinder axis, the ridges and grooves extend all the way around a circumference of the generally cylindrical burner wall and the ridges and grooves alternate in an axial direction parallel to the cylinder axis;
• wherein each of the plurality of ridges defines an area of reduced permeability relative to each area of permeability of the slopes;
• wherein the openings defined in the slopes are configured to project the flames in a direction extending above an opposing slope and respective ridge, the flames from opposed slopes creating a circular band of flames adjacent each groove, the circular bands of flames being separated by circular bands of lesser or no flames adjacent each ridge;
• wherein the openings defined in each slope are configured to project the flames such that a noise cancelling effect is achieved with destructive pressure wave interference created by the flames;
• wherein the openings defined in the slopes include a row of openings defined in each slope along a line extending in a direction generally parallel to a respective groove;
• and
• wherein the row of openings in the slopes of each pair of opposing slopes are opposing rows of openings located at equal heights above a bottom of the groove between the slopes.