Wow, yes, I really did turn to see who was knocking on my desk.
Is it just me, or does the left channel id clip have quite a different equalisation/sound to the right one?
Also, regarding the centre/twisted test clips - these are encoded as mp3 (for playing - the downloads are wav). Mp3s often encode stereo by encoding the average of the two channels and the difference between the two channels, with a lower bit rate. If one channel is inverted, then the average of the two channels will be zero, so all the sound information is encoded in the lower bit rate difference, which would give it a lower quality. Something to be aware of when making test clips like this.
You are describing the "Joint Stereo" encoding mode. I haven't tested his files, but MP3 encoders also offer a "Stereo" mode, which encodes the channels entirely separately.
Is it just me, or does the left channel id clip have quite a different equalisation/sound to the right one?
Also, regarding the centre/twisted test clips - these are encoded as mp3 (for playing - the downloads are wav). Mp3s often encode stereo by encoding the average of the two channels and the difference between the two channels, with a lower bit rate. If one channel is inverted, then the average of the two channels will be zero, so all the sound information is encoded in the lower bit rate difference, which would give it a lower quality. Something to be aware of when making test clips like this.