Need help designing a active bandpass filter for audio with adjustable center frequency

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I am looking for a skilled engineer to design an active audio bandpass filter with an adjustable center frequency for my audio processing application. I am just a hobbyist so i need help from an expert :)

The ideal candidate should have experience in audio signal processing and filter design. The project requirements are as follows:

- Center frequency: 30 Hz

- Bandwidth range: Around 10Hz

- Application: Audio processing

The deliverables should include a circuit diagram and a bill of materials for the filter design. The circuit should be able to adjust the center frequency.

The filter should use max two opamps. The center frequency adjustment should be made with a potentiometer. using the potentiometer. How far can i go with the center frequency? 1000Hz? 20.000Hz?

I have used a filter design tool which gave me the following schematics. Your job would be to tell me how to make it adjustable.

Elektrisk Ingeniørarbejde PCB Layout Kredsløbs Design Audio Processing

Projekt ID: #36698709

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Listen i have extensive filter knowledge. Your circuit is good, but you will not be able to turn it into something adjustabel unless you want to adjust a lot of potentiometers at the same time. I have a solution for yo Flere

$25 USD in 7 dage
(0 bedømmelser)

12 freelancere byder i gennemsnit $45 timen for dette job


Hello, I am Muhammad Adeel, an electrical engineer with expertise in audio processing, circuit design and electrical engineering. I have used a filter design tool which gave me the following schematics. I believe tha Flere

$100 USD in 7 dage
(36 bedømmelser)

Hi there, i hope you are fine, i can do this for you in a few hours just send me a message please.

$30 USD på 1 dag
(10 bedømmelser)

Hi, and thanks for considering my proposal. I'm an ELECTRICAL ENGINEER, LECTURER, and the freelance professional working at different scales. I have 10+ years of experience completing freelance projects in electrical e Flere

$120 USD in 5 dage
(6 bedømmelser)

Hello there! My name is Anas, and I'm an electrical engineering specialist with over 5 years of experience in the field. I understand you're looking for a skilled engineer to design an active audio bandpass filter with Flere

$30 USD in 2 dage
(6 bedømmelser)

I have previously worked on building underwater passive sonar. where I designed both analog frontend and the digital electronics in FPGA. I can easily work on your project for audio processing. I can do circuit design, Flere

$86 USD in 14 dage
(2 bedømmelser)

Hello. I am ready to complete your task. I made a similar filter for the subwoofer amplifier channel. Only there was a band adjustment from the top. I can add adjustment from the bottom, you just need to use a dual pot Flere

$25 USD in 7 dage
(1 bedømmelse)

Hi,I have designed such filters for different types of circuit an example of such is an electronic transducers running at 2mhz ,as you when a transducer recieves an echo pulse one needs to remove all unwanted frequenci Flere

$25 USD in 2 dage
(1 bedømmelse)

Dear Client. I have read your " " requirement and I am 100% confident that I can complete your project perfectly. My best skills are PCB design and schematic design using Altium, KiCad, Eagle, Proteus. Here is my past Flere

$30 USD in 3 dage
(0 bedømmelser)

Dear Client, I am pleased to offer my expertise in audio signal processing and filter design to assist you with your project. As a hobbyist in need of professional guidance, I understand the importance of working with Flere

$20 USD in 7 dage
(0 bedømmelser)