Hi guys, first post, I've just started touching electronics for the first time since high school in the 90s. I'm interested in digging deeper into the rabbit hole.
I know this is tangential to most things here, but i built this piezo preamp Piezo contact microphone hi-Z amplifier – low noise version – Richard Mudhar
I'm running a scarlet 2i2 powered from a OnePlus 6 phone using USB Audio Recorder Pro android driver over a new anker usbc to usbc cable, with the idea of having a portable rig to get DIY contact field recordings. I'm well aware you might be wincing in pain by now.
My initial tests have an unacceptable amount of popping noise which I'm assuming is from high levels of static when i am trying to record very low signals at high gain. I made a grounding mat from some mesh I intend to attach to steel structures for discharge.
I recognise there are numerous open ended issues here and I have rough plans to build a pair of updated pre amps, the reason I took it to this forum rather than his is because I'm considering adding another amp stage or switchable gain capacitors and high/low pass filter circuits etc. My ignorance should be apparent at this stage.
I have hopefully successfully attached an image showing what looks like a complete polarity switch on the audio. Could someone tell me what this phenomenon is. I'm assuming this is very basic stuff and at ultra-aggressive levels.
Please feel free to also tell me if there's somewhere better to take my discussion.
Thank you for your time and patience and I appreciate any assistance.
I know this is tangential to most things here, but i built this piezo preamp Piezo contact microphone hi-Z amplifier – low noise version – Richard Mudhar
I'm running a scarlet 2i2 powered from a OnePlus 6 phone using USB Audio Recorder Pro android driver over a new anker usbc to usbc cable, with the idea of having a portable rig to get DIY contact field recordings. I'm well aware you might be wincing in pain by now.
My initial tests have an unacceptable amount of popping noise which I'm assuming is from high levels of static when i am trying to record very low signals at high gain. I made a grounding mat from some mesh I intend to attach to steel structures for discharge.
I recognise there are numerous open ended issues here and I have rough plans to build a pair of updated pre amps, the reason I took it to this forum rather than his is because I'm considering adding another amp stage or switchable gain capacitors and high/low pass filter circuits etc. My ignorance should be apparent at this stage.
I have hopefully successfully attached an image showing what looks like a complete polarity switch on the audio. Could someone tell me what this phenomenon is. I'm assuming this is very basic stuff and at ultra-aggressive levels.
Please feel free to also tell me if there's somewhere better to take my discussion.
Thank you for your time and patience and I appreciate any assistance.
> you might be wincing in pain by now.
Well, yeah. A cellphone is an amazing thing but can it do flawless recording? 99.9% of users will never try. That really could be a software bug. You might try the several bits of your recording chain in combination with other gear, like desktop PC.
Well, yeah. A cellphone is an amazing thing but can it do flawless recording? 99.9% of users will never try. That really could be a software bug. You might try the several bits of your recording chain in combination with other gear, like desktop PC.