Audio Capture Board Design

已关闭 已发布的 5 年前 货到付款

$30-250 USD

货到付款

已关闭 货到付款

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.

电子 印制板布局 电气工程 Arduino 微控制器

项目ID： #20972040

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quang102

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$200 USD 在5天内
(37条评论)
6.5
ChewGekKhim的简历照片
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 更多

$200 USD 在2天内
(11条评论)
4.1
CircuitSolutions的简历照片
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 更多

$140 USD 在7天内
(1条评论)
3.2
dddev88的简历照片
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 更多

$160 USD 在7天内
(2条评论)
0.8
killzone024的简历照片
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 更多

$30USD 在1天里
(1条评论)
0.6
janxtr的简历照片
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 更多

$200 USD 在10天内
(1条评论)
0.0
ManingM的简历照片
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 更多

$200 USD 在10天内
(0条评论)
0.0
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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 更多

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