Electret Condenser Mic Question
 

I have a headset electret condenser mic that has a low frequency response.
Other than changing the element is there a means of getting a higher
frequency response?

Electret Condenser Mic Question
 

On Mon, 26 Feb 2007 11:03:32 GMT, "Spin" wrote:

I have a headset electret condenser mic that has a low frequency response.
Other than changing the element is there a means of getting a higher
frequency response?

Optimise the series (DC blocking) capacitor in the amp input.

Electret Condenser Mic Question
 

I think the terminating impedance has an effect on the response. A serach
on either condensor mic or electret should yield some info. I know that the
housing or cavity that the element resides in can have a pretty dramatic
effect as well.
"Spin" wrote in message
news:88zEh.14108$sv6.184@trndny08...
I have a headset electret condenser mic that has a low frequency response.
Other than changing the element is there a means of getting a higher
frequency response?

Electret Condenser Mic Question
 

On Feb 26, 5:03 am, "Spin" wrote:
I have a headset electret condenser mic that has a low frequency response.
Other than changing the element is there a means of getting a higher
frequency response?

It's most likely not the mic causing that issue. Most condenser mics
have a great freq response. You should look at the circuit and zero in
on any RC filtering that may be taking place... giving you that
"bassy" sound.

www.telstar-electronics.com

Electret Condenser Mic Question
 

On Mar 2, 6:04?am, "Telstar Electronics"
wrote:
On Feb 26, 5:03 am, "Spin" wrote:

I have a headset electret condenser mic that has a low frequency response.
Other than changing the element is there a means of getting a higher
frequency response?

It's most likely not the mic causing that issue. Most condenser mics
have a great freq response. You should look at the circuit and zero in
on any RC filtering that may be taking place... giving you that
"bassy" sound.

www.telstar-electronics.com

Quite true on wideband audio response and the necessary
amplification that must follow it.

Working around stray RF fields can cause other problems
around electret microphones. They are inherently high-
impedance so one has to pay attention to the VLF and up
stray RF because of that high impedance...especially if
using newer op-amps or other active devices having high
frequency amplification. It is a compromise in design:
attenuate the VLF and above response but hold the
microphone amplifier response flat out to at least 10 KHz.

Electret Condenser Mic Question
 

Quite true on wideband audio response and the necessary
amplification that must follow it.

Working around stray RF fields can cause other problems
around electret microphones. They are inherently high-
impedance so one has to pay attention to the VLF and up
stray RF because of that high impedance...especially if
using newer op-amps or other active devices having high
frequency amplification. It is a compromise in design:
attenuate the VLF and above response but hold the
microphone amplifier response flat out to at least 10 KHz.
====================================
You probably mean the last line to be ...........not more than approx 3
kHz. After all we talk 'phone' operation.

Frank GM0CSZ / KN6WH ( from W6 back in chilly GM )