TSL - Actual Radio Station - Stream - (audio processing?)

[kfbkfb]

Anyone done a study to see if the TSL is different when listening to the actual radio station (restricted to FM for my example) as compared to the streamed version?

I rarely listen to FM radio (using a radio) at home since, even with the sophisticated audio processing used on FM, I can still hear it operating much of the time (turning down the treble at times etc.), AFAIK, streaming doesn't use the old style NR system of a treble boost before broadcast, it is streamed "flat".

IIRC, Robert Orban stated he was looking forward to HD radio because it doesn't use the treble boost/cut NR technique, HD radio transmits content "flat".

Do radio/stream audio processing differences make any measureable difference in TSL?


Kirk Bayne

 

[Kelly A]

Anyone done a study to see if the TSL is different when listening to the actual radio station (restricted to FM for my example) as compared to the streamed version?

Not that I've ever heard of.

I rarely listen to FM radio (using a radio) at home since, even with the sophisticated audio processing used on FM, I can still hear it operating much of the time (turning down the treble at times etc.), AFAIK, streaming doesn't use the old style NR system of a treble boost before broadcast, it is streamed "flat".

With exceptions; streams don't typically use much processing because they don't have preemphasized audio, a limitation on passing high frequencies, and 75kHz deviation limit like FM stereo does.

IIRC, Robert Orban stated he was looking forward to HD radio because it doesn't use the treble boost/cut NR technique, HD radio transmits content "flat".

Problem is; modern audio processors are one-box solutions. In order to keep audio consistent when receivers switch between analog and digital, with the exception of preemphasis, processing amounts are the same. That means, if the analog is being aggressively processed, so goes the HD.