I've been using silicone from a company called "trollfactory" I believe that you can buy it on Amazon, I'm from Germany however, so I'm uncertain of availability in different parts of the world.Was
Ooh, what silicone are you using?
Try increasing cap and reducing resistor for better result. The resistor also works as an attenuation system alsoI think you can use both. The one on the left is full until the second bend that´s where you cut anyways. The seal happens below that point so i don´t see any problem with the impression.
Can anyone tell me why my RC lowpass filter produces a result like that?
Below you see the yellow line which is a highpass. The same driver just with the capacitor and resistor switched results in the green line.
R=1kOhm C=4,7uF so cutoff should be somewhere between 30-50Hz.
Edit: Nevermind! Stupid me put a 103 smd resistor in (10kOhm) which results in a 3Hz cutoff frequency. But still it is weird that there is so much high frequencys coming through.
Hey yes, i tried that as well and you are right it works much better. Im ordering new capacitors with 100uF so i can use a smaller resistor. Im also ordering some smd inductors from which i know are traditionally not used with BA drivers but i figured its worth a try.
NuraphoneHey yes, i tried that as well and you are right it works much better. Im ordering new capacitors with 100uF so i can use a smaller resistor. Im also ordering some smd inductors from which i know are traditionally not used with BA drivers but i figured its worth a try.
Another Question i wanted to ask is:
Do you guys use a compensation curve for measuring frequency response? There is something called open ear gain which is the natural resonance of the outer ear canal. In short it increases the area around 3khz. If you put a CIEM in your ear this effect wont take place and you need to compansate for that.
Im sure the most of you know this im just explaining because maybe there are a few who don´t know that.
Here is an extract of an wikipeadia article about this topic:
Insertion gain
The traditional method of real ear measurement is known as insertion gain, which is the difference between the sound pressure level measured near the ear drum with a hearing aid in place, and the sound pressure level measured in the unaided ear. First a measurement is made with the probe tube in the open ear (Real Ear Unaided Response, or REUR), then a second one is made using the same test signal with the hearing aid in place and turned on (Real Ear Aided Response, or REAR). The difference between these two results is the insertion gain. This gain can be matched to targets produced by various prescriptive formula based on the patient's audiogram or individual hearing loss.[9]
Another interesting read: Article
I know a audiogolist who can measure the real ear with an in situ microphone. Wouldn´t it be possible to measure someones ear and take that curve to compansate in ARTA. You could than presumably achieve a more flat/linear response?
Ah cool, so it is viable. Are you using the Harman curve to compensate? If yes where do I get it?
Its a headphone which uses a mic to measure your ear canal resonance and hair cell low sensitive region of frequency and tune headphone according to that
You are not reading my comments correctly
.You are not reading my comments correctly
I found the .txt file for the Harman target response curve. Now I can use it as an compensation curve in ARTA.
Thanks anyway!
Yes ofc, but it is the most scientific thing to a "flat" response that there is. So that is a good starting point. Unless you tell me it's not.
