Need help with a white noise device

Let me preface this by saying that I know very little about electronics so take it easy on me. I am looking to buy or find someone to produce a white noise generator in a compact plastic casing, preferably round and about the size of a half dollar and maybe a 1/2 inch thick, with some type of volume control. Again, I know very little about electronics so I don't know if I am looking for a white noise generator or maybe just something as simple as the white noise sound playing on a loop. I am planning to have these produced in bulk after I can produce a prototype. Any idea on where to have this constructed and maybe a guess at cost per unit? I would greatly appreciate any help provided on this.

I guess what I am looking for is a white noise player (used for sleeping) in a more compact housing.

Also you should know that usage, possession and trading RF jammers is prohibited in almost any country.

Think twice before you start bulk production.


Best regards,
Peter

What you seem to be looking for is a device that produces shaped noise similar to that used in sound masking systems in office buildings. The size you describe can be done, except for the power supply (or battery) and the loudspeaker. The sound is shaped electronically to correct for the room and the loudspeaker. E

From a good loudspeaker, white noise sounds very shrill because it is mostly high audio frequencies. Pink noise sounds more pleasing because the high frequencies are reduced by 3dB per octave, something like interstation noise heard on an FM radio (where de-emphasis cuts the high frequencies).

When I worked with a few office sound masking systems, workers thought it was air conditioning or water running sounds.

I saw a half dollar about 50 years ago. It is much too small for a loudspeaker, it would just make squeaking sounds. It is suitable for a sealed headphone.