The problem does not exist if you belong to the 99% of population who can't tell absolute polarity.
Seriously, there are specialized test tracks, I remember vaguely one Ortofon test disc has one (brass instruments).
Seriously, there are specialized test tracks, I remember vaguely one Ortofon test disc has one (brass instruments).
Battery test always works even with caps in the signal path.
By the way, if the microphone diaphragm in the recording studio moves "inwards", should the speaker cone move outwards...??? ...
By the way, if the microphone diaphragm in the recording studio moves "inwards", should the speaker cone move outwards...??? ...
Absolutely YES. It's mimicing the eardrum. The recording 'freezes' the actual live performance for later reproduction. It's a time traveling shift.
"Build An Audio Phase Detector," Charles Kitchen, Audio Magazine, January 1978
https://www.proaudiodesignforum.com/forum/php/viewtopic.php?t=1308
The word is "polarity," not "phase."
https://www.proaudiodesignforum.com/forum/php/viewtopic.php?t=1308
The word is "polarity," not "phase."
Polarity just refers to two particular values of phase angle, 0 or 180 degrees when AC signals are involved. Polarity is often used to denote the direction of a DC voltage.
The Google play store, and I assume Apple, has an app called polarity checker. Works as advertised. I use it occasionally. Plays a "click" of known polarity and the phone's speaker can tell whether the tone is the same as injected or reversed. Simple.
It is not surprising that compression and rarefaction sound different. Air pressure cannot go below zero. 😉
Ed
Ed