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Simple Audio Monitor-Signal Generator

Hello everyone,

I made a simple desktop audio measurement box, which can support AES/EBU input and output and balanced stereo analog input and output. It also has a 6.35 port headphone monitoring output and a built-in 3W speaker.

It probably has the following functions:

1. All input and output gains can be adjusted
2. Any input can be assigned or mixed to any output. The input signal types include AES/EBU input, balanced analog stereo input, oscillation input, and frequency sweep input.
3. All inputs and outputs can be mixed independently/all mixed and then sent to headphones and speakers for monitoring.
4. Each channel of monitoring has an independent mixing switch and gain adjustment knob. Built-in speaker with independent mute switch.
5. Each output group has left and right channel mute switches
6. When the oscillation signal is used as the output source, the output oscillation frequency can be adjusted.
7. For AES/EBU input, it has sampling frequency indication and signal lock status indication.
8、All inputs and outputs have peak meter display
9. All internal input and output interfaces use modular ADC and DAC. If there is a need to upgrade the interface, we can provide the interface definition and size of the interface motherboard.


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