Make my own Waterproof headphones.

[Harold in Fla]

Thanks Tinkerer, i'll try them and see what i can do, Harold

[6666]

C8, 2.2KpF

when I first looked at the cct I did not look real hard at the values
until i printed it out later, I understand about it being part of a filter
but I was questioning the way the cap values are marked

2.2KpF - that decimal point is hard to see

what is C10 470K ? 470,000pf
(470,000pF = 470nF = 0.47µF)



strangely when I printed out the circuit its quite hard to read the writing on bottom right hand side, when i view it here it appears to say all caps are in picofarad


cap 7 is 120-150 picofarad , I made that clock only last week, runs at 30khz

[Cyclonite]

If you want to design your own Bone Conducting Hearing Aid, then the Physiology concerning the basics of Bone Conduction will be a good first step in gaining knowledge to base your research ideas on. However, you may or will be confronted with an overwhelming amount of cross-talk issues when dealing with the stereophonic aspects of sound reproduction in this way. As attachment, you will find a few interesting articles that may give you a good first butt-kick in the right direction as to basing your research and new ideas on.

Just a few articles and some ghetto humor to slap your face with, ... enjoy!

Robert

Attachment:

Sound Through Bone Conduction in Public Interfaces - By Mariano Belinky & Natalie Jeremijenko.pdf
and
Bone Conduction - Anatomy, Physiology, and Communication - By Paula Henry & Tomasz R. Letowski (Army Research Laboratory ARL - ARL-TR-4138 - May 2007) 206s.pdf
as
Bone Conduction - Anatomy, Physiology, and Communication (2007).part1.rar
Bone Conduction - Anatomy, Physiology, and Communication (2007).part2.rar
Bone Conduction - Anatomy, Physiology, and Communication (2007).part3.rar
Bone Conduction - Anatomy, Physiology, and Communication (2007).part4.rar
Bone Conduction - Anatomy, Physiology, and Communication (2007).part5.rar
Bone Conduction - Anatomy, Physiology, and Communication (2007).part6.rar
Bone Conduction - Anatomy, Physiology, and Communication (2007).part7.rar
and
Bone Conduction Head Sensitivity Mapping - Bone Vibrator - By Maranda McBride, Tomasz R. Letowski & Phuong K. Tran (Army Research Laboratory ARL - ARL-TR-3556 - July 2005) 45s.pdf
as
Bone Conduction Head Sensitivity Mapping - Bone Vibrator (2005).rar

Could this guy be using a Bone Conducting Hearing Aid, ... or is he just playing with a Boner?

[Cyclonite]

And one US Patent application:

Attachment:

US Patent 4.791.673 - Bone conduction audio listening device and method.pdf