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What am I hearing? Can it be filtered out?


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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

 


 

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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.

Auralic Aries G2, Ayre QX-5 Twenty, Ayre KX-5 Twenty, Ayre VX-5 Twenty, Revel Ultima Studio2, Iconoclast speaker cables & interconnects, RealTraps acoustic treatments, Sonore opticalModule (X2)

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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

Piano with Aliasing.jpg

How a Digital Audio file sounds, or a Digital Video file looks, is governed to a large extent by the Power Supply area. All that Identical Checksums gives is the possibility of REGENERATING the file to close to that of the original file.

PROFILE UPDATED 13-11-2020

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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

 

rec3.thumb.png.f66fc653c8e9054c065cfc585ff1bd56.png

Fig.1

 

rec4.thumb.png.231ae1426fcecd958f6bd6f49d96706e.png

Fig.2 Cut 4kHz or above frequency components

 

 

rec5.thumb.png.5d244b6b413eda2b3a56b3108f3ebe4e.png

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

Sunday programmer since 1985

Developer of PlayPcmWin

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