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Bug #31

closed

HDMI Audio generate high pitch noise (Core 8)

Added by ndary over 7 years ago. Updated over 6 years ago.

Status:
Closed
Priority:
Normal
Assignee:
-
Start date:
06/01/2017
Due date:
% Done:

0%

Estimated time:

Description

The Audio of the HDMI port generate high pitch sound..

you can hear it when TAPE LOADS, or though disk driver SIO sound or when steaming video through SIDE2 CART.
This pitch noise is not heard on the speakers connected to Audio out port

Nir


Related issues 1 (0 open1 closed)

Related to Bug #6: HDMI audio poor qualityClosed04/04/2017

Actions
Actions #1

Updated by foft over 7 years ago

The HDMI audio has some issues, I have another bug to find this.

Actions #2

Updated by foft over 7 years ago

  • Related to Bug #6: HDMI audio poor quality added
Actions #3

Updated by foft over 7 years ago

Did it on core 7 btw? If so I guess its aliasing from the adc noise? I need a low pass filter on input to the HDMI component I think.

Actions #4

Updated by ndary over 7 years ago

it happens with CORE 8 & 9 as well

Actions #5

Updated by foft over 7 years ago

So you are saying it happens with v7? OK that rules out the adc then.

Actions #6

Updated by foft over 7 years ago

HDMI audio to me seems very broken... Even just the 'bubbling' boot sound comes out wrong in my opinion.

Actions #7

Updated by foft over 6 years ago

HDMI audio is sounding better now in general (signed/unsigned). This high pitched noise is still heard in some cases though, so it needs further investigation.

Actions #8

Updated by foft over 6 years ago

Added a low pass filter and this is gone, to be released in v23.

Actions #9

Updated by foft over 6 years ago

  • Status changed from New to Closed
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