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My song only plays normally when on headphones or pc

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Quinnfinity3
Member since: Nov. 6, 2022
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My song only plays normally when on headphones or pc 2026-04-12 17:16:52


Hard to explain but I used open mpt and set some channels surround. These channels set on surround will not play if played on mobile. I tried exporting as flac and mp3. Nothin. The final track in the link was exported from open mpt, mixxed on fl, and exported as mp3 from fl. I also tried turning of surround but it made the song sound worse. Is there any way I can just get this song to play on mobile as it's full original audio? Try it. Listen to it with headphones then listen to it without headphones. Its 2 different songs. It's wild.

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Positron832
Member since: Apr. 30, 2020
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Response to My song only plays normally when on headphones or pc 2026-04-12 17:41:57

Guessing it's phase cancellation. It can occur when you got the same sound on the left and right channel, and while they sound fine on stereo speakers they can cancel each other out on mono speakers, resulting in silence. I don't know enough about OpenMPT to know how to fix it there though :/

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Quinnfinity3
Member since: Nov. 6, 2022
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Response to My song only plays normally when on headphones or pc 2026-04-12 17:44:11

At 4/12/26 05:41 PM, Positron832 wrote:Guessing it's phase cancellation. It can occur when you got the same sound on the left and right channel, and while they sound fine on stereo speakers they can cancel each other out on mono speakers, resulting in silence. I don't know enough about OpenMPT to know how to fix it there though :/


Thank you for the inquary though.

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VoidendSound
Member since: Jan. 7, 2024
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Response to My song only plays normally when on headphones or pc 2026-04-12 21:08:37

At 4/12/26 05:41 PM, Positron832 wrote:Guessing it's phase cancellation. It can occur when you got the same sound on the left and right channel, and while they sound fine on stereo speakers they can cancel each other out on mono speakers, resulting in silence. I don't know enough about OpenMPT to know how to fix it there though :/


maybe he can invert the phase of one of the sides, so it doesn't change sound at all but it may help

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5TV
Member since: May. 23, 2020
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Member Level 05 Musician

Response to My song only plays normally when on headphones or pc 2026-04-12 23:11:28

This is why: "surrounded sound is nothing more than the normal sound through one channel and the inverted version through the other. That's why, on stereo equipment, these channels seem to come from both speakers at the same time, though not from the middle" (from open mpt themselves https://resources.openmpt.org/resources/Surround_Sound.htm) (this means on mono sources, anything that was mono before will be summed to 0 since it will now be perfectly out of phase) So, i assume your instruments were already stereo, and your vocals were in mono. So when you inverted the phase of the channels your mono sounds (vox) were perfectly out of phase, and your stereo sounds were just a little more out of phase than they already were (in order to be stereo you need a difference in the phase of left and right). The fix is to simply not use the surround mode, it seems to be meant for multi-speaker setups like 5.1 and 7.1. To add stereo effects to the vox you could try to use something like chorus or another less aggressive widening effect. Hope this helps!

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