chebyshevF said:I have a high pass filter circuit, which I've designed from a transfer function, and from the Bode Plot, I'm getting some amplification, yet I don't want that. I just want my input=ouput at the frequency where amplification starts. How can i go about to do this?
Should i introduce another capacitor in series? A voltage follower perhaps?
chebyshevF said:^^Actually I tried an inverting opamp, yet didn't think of setting the gain to the inverse of my HPF circuit's gain. I don't understand why though? So it swaps the pole and zero that i have, hence i get new capacitor values..i can't quite put my 'finger' on it but it kinda makes sense.
There are a few different methods for attenuating an already amplified output, depending on the type of amplifier you are using. One option is to use a volume control or attenuator knob on the amplifier itself. Another option is to use a passive attenuator, which can be inserted between the amplifier and the speaker. Finally, you can also use an active attenuator, which uses electronic components to reduce the output level.
In most cases, attenuating an already amplified output should not significantly affect the sound quality. However, using a passive or active attenuator may introduce some slight changes in the frequency response or dynamics of the sound. It is important to choose a high-quality attenuator and to adjust it carefully to minimize any potential impact on sound quality.
A passive attenuator simply uses resistors to reduce the signal level and does not require any external power source. An active attenuator, on the other hand, uses electronic components such as transistors or op-amps to actively reduce the signal level. Active attenuators are typically more expensive but may offer more precise control and less impact on sound quality.
Yes, a resistor can be used as a simple passive attenuator to reduce the signal level. However, the exact value of the resistor needed will depend on the output impedance of your amplifier and the input impedance of your speaker. It is important to choose the right value to avoid damaging your equipment or affecting the sound quality.
If your amplifier has a dedicated volume control or attenuator knob, then you can use that to adjust the output level without needing any additional equipment. However, if your amplifier does not have this feature, then you will need to use a passive or active attenuator to reduce the signal level. Alternatively, you could also use an external mixer or preamp to control the output level before it reaches your amplifier.