Live audio recorder having issues.

I'm working on a live audio input recorder/looper and I'm having issues with aliasing and what sounds like sample rate reduction on th einput signal.

It sometimes record perfectly and sometimes it does not.

Are there any common culprits for this kind of an issue, I've never built a live sample recorder before so this is new territory.

It's a very straight forward build, there is a ramp driving the write position and a second ramp driving the read position, are there any know methods for oversampling or anti aliasing the incoming audio signal to get a better recording.

Thanks.

 

It's usually an error in the design of the system, or an error in the implementation.

 

are you interpolating the reads?

 

Yeah, I'm interpolating the reading process, I think it's an error in the write somehow.

 

Hm, usually the write process is very simple and straight forward using a ramp. I can´t think of how one could do that wrong, espacially thinking of experienced builders like you, as it is just adding one to the array index per sample. Imo, you should better look into the Read process (Interpolation). That is also my experience with interpolated audio.
Concerning Oversampling, i am definitely not an expert, but i think it is common to just record the "raw material" at SR.C into an Array and doing oversampling at read time if needed.