[AudioI] Audio hardware incl preamp for multichannel hydrophone recording

[Matt Flax]

Hi,

 

Sounds like a great focus.

 

We are in design for phantom powered microphone preamps at the moment. These preamplifiers will be AI-ABS compatible - they will fit the Isolated soundcad and the Professional (Pro) soundcards which are soon to ship. However those soundcards are stereo souncards. The nice thing about the Pro's phantom line is that it sits at 50V, so once you clean that up a little its phantom power line will be comfortably within the phantom 48v specification.
 

 

The octo will do audio input reliably and are suitable for multichannel input. They provide a header with 5V power. A step-up power supply can be designed for the Octo's analogue header to generate not only phantom 48v power but also opeartional amplifier power lines.

 

How low is the noise floor on the hydraphones ? Typically noise floors for microphones are pretty high.

 

Matt
 

 
On 13/7/21 7:01 pm, NEW adi.ibanez--- via People wrote:
 
 Hi 

 
 
My goal is to record multichannel hydrophone audio. Preferably on a platform where I can easily deploy software to analyze / interpret audio. Raspberry pi would fit that description and I have some experience there working with a single cheap usb microphone. 
 
But Connecting several preamps and hydrophones without introducing lots of noise is a whole different level for me.
 

 
 
I have been using h6 zoom recorders before with aquarian audio hydrophones ( https://www.aquarianaudio.com/h2a-xlr-hydrophone.html phantom powered ). Also I have used a single hydrophone ( https://www.aquarianaudio.com/h1c-hydrophone.html ) connected to a https://www.aquarianaudio.com/pa4.html?variation_id=95 and ending in a video camera audio input
 

 
 
I was wondering if audioinjector hardware could help me to simplify such a setup? Preferably by providing preamplification and audio interface in a well integrated and noise reduced package. 
 
Ultimately I’m aiming at recording 4 synchronized channels but I would be more than happy to start with 2. 
 

 
 
Any recommendations?
 
I have seen some of your products with “integrated” preamps ( aka Audio Injector analogue breakout standard headers ). Is this something that could be integrated with eg. the Octo soundcard?

 

 
 
Best regards
 

 
 

 
 

 
 
 




 

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