The Original Sound Conditioner first introduced in 1962; now in its 4th generation design. The Dohm-DS Dual-Speed All-Natural White Noise Sound Machine is so effective, it was named “Official Sound Conditioner” of the National Sleep Foundation. Instead of a digital (electronic) recording, it has a built-in fan that creates the sound of rushing air. The Dohm-DS consists of a compact adjustable acoustic housing surrounding a two-speed electric motor with a unique asymmetrical fan. This design allows it to create the soothing sound of rushing air, the Marpac Signature Sound, without the disturbance of actual moving air.
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