Audio panned hard right can still be heard slightly on left... Why?

[SimSpace]

Hi,

I am having a problem with audio bleed. I have a track panned hard right, yet I still hear the audio slightly on the left side. This is a new problem that has recently cropped up.

I have run tests in Reaper, Mackie Tracktion and Audacity to rule out the DAW config problems. The problem occurs in all three applications.

I have not made any hardware changes.

Here are the recent tests I ran to see if this a hardware problem. Please note that I have two sound cards in my system, a Delta 1010 and a Sound Blaster Audigy. I ran the tests on both...

1) Create a new Audacity project with no effects, plugins, etc.

2) Load an MP3 into Audacity.

3) Split the MP3 stereo track into two separate tracks
*track one is the left channel
*track two is the right channel.

4) Test the Delta 1010 audio card...

a) mute track one (left channel)
b) start playback.
c) right channel sounds great, and can see signal on the meter.
d) remove right channel earbud
e) can hear bleed in left earbud (muted left channel signal does not appear on the meter).
f) repeat steps a-e but this time the right channel (track two) is muted. The results are the same, I can hear bleed in right earbud (muted right channel signal does not appear in the meter).
​

5) Run the same tests above (a-f) on the Sound Blaster audio card. The results were identical.

So, I experience the bleed problem on both channels and on both sound cards.

Is this a hardware problem? Driver problem? I have no clue.

Any suggestions would be very welcome!

Thanks!
Chris
__________________
Chris "The Edge" Simeone
UZoo - The Ultimate U2 Tribute Band Experience!
www . u2act . com

 

[RAMI]

Just throwing this out there, not trying to insult your intelligence, because I'm sure you did this , but just in case:

In you title you said "Panned hard right". But in your step by step, you didn't say that you actually panned channel 2 hard right. So, my obvious question is: Are you sure you paned the channel hard right?

I'm sure the answer is "yes", but sometimes we over-look the most obvious problems so I'm just making 100% sure.

 

[mixsit]

c) right channel sounds great, and can see signal on the meter.
Scale the meter? (-96?), look for activity/bleed on the blank side. This would show at least that portion of you chain.
You need to break you system into it's parts and trace it out -where it goes astray.

 

[dgatwood]

Does Audacity let you manipulate left and right as separate waveforms? If so, try zeroing just one side. Then play it back. If you still get leakage, it's probably in your headphone amplifier.

 

[VomitHatSteve]

Does Audacity let you manipulate left and right as separate waveforms? If so, try zeroing just one side. Then play it back. If you still get leakage, it's probably in your headphone amplifier.

Audacity lets you split a stereo track into separate L/R channels using the drop-down on the left side of the track.

 

[poisonivy24]

If their suggestions did not work, better ask someone like a tech to see the connection in your audio.

 

[bruiser1964]

first question would be why? you wouldn't notice it in the mix, crosstalk is something that used to be much more common. What are the results when you try this with a mono track? It could just be that the stereo spread is not 100/0 0/100 as is common but 95/5 5/95 (not actual figures just a graphic example)

 

[justadrummer]

No effects are sending back any info to a stereo track are they?