Hi all,
I am new to this forum and this is my first post, so I don't know what all the code of conduct is here. So I am just putting my problem here and hoping somebody will correct me if anything goes wrong.
I have a perfect stereo encoder. Perfect in a sense, it gives around 70dB stereo separation once demultiplexed through MPX tool in a file mode. But once I am playing my composite signal through M-audio card(configured at192khz) and recording it back through same M-auido card (loop back in analog path), then that recorded file is not giving good separation. Then stereo separation is coming around 44dB.
Can anybody suggest me whats wrong with M-audio card? What kind of card should I use for achieving 55dB of attenuation. I heard somewhere there are following factors that could limit the stereo separation:
1. Uneven attenuation at frequencies after 24 KHz in this cards frequency response.
2. Poor Low frequency tilt is another issue
How to overcome such problems?
Thanks for reading
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