What am I hearing? Can it be filtered out?

[TyFord]

Hi,

 

I'm working on a music project for a client. I am using a friend who is a composer to build tracks. He has an acoustic grand piano and records into PT with a pair of C414 mics.
The files I have received from him (below) have some odd ringing, like harmonic distortion. Can you tell me what the cause might be and if these files can be filtered to remove the "fizz?"

Thanks,

Ty Ford

 

 

[cjf]

Can you load the file into Audacity to see if it shows anything odd?

 

https://www.audacityteam.org/

[TyFord]

I saw some strange waveform artifacts when I zoomed all the way into Pro Tools. That doesn't tell me how it got that way or if here's a way to fix it.

 

Thanks,

 

Ty Ford

[Axiom05]

What is the format of the recording, bit rate? Is it lossy or lossless? If I had to guess, sounds like it is over processed/data compressed.

[TyFord]

24-bit .wav, 48 kHz.

[sandyk]

 

Quote

The files I have received from him (below) have some odd ringing, like harmonic distortion. Can you tell me what the cause might be and if these files can be filtered to remove the "fizz?"

Thanks,

Ty Ford

[TyFord]

so, that's a "no."

[yamamoto2002]

It seems it is recorded at 48kHz. 4kHz or above frequency component contains non-musical harsh digital noise: The spectrum pattern is repeated above 4kHz,  it is somewhat similar to the aliasing noise when the same digital sample value is repeated 12 times (Fig.3) ...

 

Cutting the signal 4kHz or above (Fig.2) to alleviate this noise. Sound becomes somewhat Lo-Fi ish

Delete4kHzOrAboveResult.mp3

 

Fig.1

 

Fig.2 Cut 4kHz or above frequency components

 

 

Fig.3 Downsampled to 4kHz PCM and zero-order-hold upsample to create 48kHz PCM