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Audio Capture Board Design

We want to get the design of a simple audio input/output peripheral device targeting speech applications.

The key elements of the design are a simple PCB with 6 surface mount MEMS microphones, one small loudspeaker, and electronics to perform A/D conversion on the 6 microphone streams and connect them to a USB 2.0 port, plus to take an output audio stream from USB, convert to analog and drive a small speaker (4-7cm diameter). This is really just an audio codec to USB bridge, with a USB to speaker driver. No other signal processing is required on the board. Power is supplied by the USB connection. The design much include the microphones, LEDs, board connectors, USB/codec IC and all necessary passive components.

The designer should be familiar both with methods for low-cost board design, for example to minimize the number of PCB layers, and with methods to maintain good signal integrity for analog signals to reduce noise and minimize EMI necessary for FCC Class B certification.

Evner: Elektronik, PCB Layout, Elektrisk Ingeniørarbejde, Arduino, Microcontroller

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Om arbejdsgiveren:
( 1 bedømmelse ) Омск, Russian Federation

Projekt ID: #20972040

13 freelancere byder i gennemsnit $164 på dette job

quang102

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$200 USD in 5 dage
(37 bedømmelser)
6.5
vtlabs

Hi My name is Vusi and I'm an Electronic Engineer, you can learn more about me from my freelancer profile or my website at [login to view URL]

$250 USD in 5 dage
(26 bedømmelser)
5.9
ChewGekKhim

Dear, Client. I would like to say this is my fortune to show you my hardware skills. I can bring your idea to live and you can reach the goal absolutely with me. I have 10+ years experience in hardware design (schem Flere

$200 USD in 2 dage
(11 bedømmelser)
4.0
gaoshou007

Dear client. nice to meet you. low cost, high quality. see my profile pls. you've got the will, we've got the way. I am very very familiar with your job posting. I'm an expert with PCB. I can start soon and finish with Flere

$180 USD in 5 dage
(4 bedømmelser)
3.6
Panggumsok

Hi, I am PCB expert. I am working on embedded system design and realization. I have been working with circuit sketch and PCB design. I've designed a lot of pcb projects and realized it. I think we can chat for detail.

$50 USD in 5 dage
(1 bedømmelse)
1.4
dddev88

Dear Sir. I have just read your project and I’m absolutely sure I could do this project without any problem. I am having 10+ years of rich experience in circuit sketch and PCB design. I've designed a lot of PCB project Flere

$160 USD in 7 dage
(2 bedømmelser)
0.8
killzone024

I am an experienced BEng. Electronics and Communications Engineer living in Cyprus. I am specialized in Signal Processing, Image Processing. PCB design (Proteus, KiCad), Microcontrollers Arduino, RaspberryPi. I have ad Flere

$30 USD på 1 dag
(1 bedømmelse)
0.5
CircuitSolutions

Want best return on your investment, hire me.. Привет !! Do not go on my freelancer experience, head over to my portfolio and see my expertise for your self. I am a certified Altium professional PCB designer, with a Flere

$140 USD in 7 dage
(0 bedømmelser)
0.0
janxtr

Hello, I have many years of experience in the development of electronics. I can prepare all the technical documentation for mass production. Also fulfill all conditions for certification CE, FCC and ROHS compliance. P Flere

$200 USD in 10 dage
(1 bedømmelse)
0.0
jt365sky

I have a NXP [login to view URL] System on Module(SOM) may fit your needs. You can take a look into my portfolio pages for details. I can design a micro-phone array board to connect to the module through it's 8-channels i2s i/f. Flere

$140 USD in 7 dage
(0 bedømmelser)
0.0
satyagiet1

Yes I have already done the speech Input & Output project using stm32 discovery [login to view URL] Codec chip is there .But we can interface external codec for audio I/O. In KEIL IDE basically I deed this. Relevant Skills Flere

$222 USD in 7 dage
(0 bedømmelser)
0.0
ManingM

Hi. I have designed several audio codecs for digital and analog radio applications. I have understood your project. I can design you audio codec and will make sure for FCC and ROHS compliance design. The deliverables o Flere

$200 USD in 10 dage
(0 bedømmelser)
0.0
YongD1Freelancer

PCB layout work, advisory, with design file for builder SERVICE 1, 50, 100 SERVICE 2, 25 SERVICE 3, 75 Relevant Skills and Experience PCB layout work, advisory, with design file for builder SERVICE 1, 50, 100 SERVIC Flere

$155 USD in 3 dage
(0 bedømmelser)
0.0