nrf5340_audio:How to hear sound in the right headset?

RE: nrf5340_audio:How to hear sound in the right headset?

RajendraN — Mon, 22 Jul 2024 06:14:09 GMT

Hi Liuzong,

How did you do this. Could you please share the information with me.

Warm Regards,
Rajendra.

RE: nrf5340_audio:How to hear sound in the right headset?

liuzong — Thu, 11 Jul 2024 09:55:16 GMT

Hi,

I seem to see what you mean. You're talking about a mono headphone driver at the hardware level, which means if there's an output, it's in the left ear.

RE: nrf5340_audio:How to hear sound in the right headset?

Hieu — Thu, 11 Jul 2024 08:22:55 GMT

Hi Liuzong,

Yes, that result should explain things. This is how I reason it:

Sound file	Config	Output	Hear in L ear	Hear in R ear
		If the file has sound on the currently configured channel, there will be output	As long as there is an output, there will be sound	There cannot be sound
L&R	L	Yes	Yes	No
L&R	R	Yes	Yes	No
L-only	L	Yes	Yes	No
L-only	R	No	No	No

Best regards,

Hieu

RE: nrf5340_audio:How to hear sound in the right headset?

liuzong — Thu, 11 Jul 2024 02:13:08 GMT

Hi,

Although I didn't try to send a right-channel-only stream, I did two experiments: sent a stream that contains both the right and left channels, sent a stream that contains only a right-channel stream . It turns out that when I send a stream that contains both the right and left channels, no matter whether the receiver is the right device or the left device, the sound can only be heard in the left ear. When sending a stream with only the left channel, only the left device can hear the sound in the left ear, and the right device cannot hear the sound.I will show the results of my experiment in a table.

Can this result explain the problem? Is it still necessary for me to try to send streams that contain only the right channel?

Best wishes,

Liuzong.

RE: nrf5340_audio:How to hear sound in the right headset?

Hieu — Tue, 09 Jul 2024 19:52:33 GMT

Hi Liuzong,

Referring to the nRF5340 Audio DK's schematic, it seems that the HW Codec there is a CS47L63, which only has a mono differential headphone driver. The HW Codec then is only connected to the tip part of the 3.5mm socket. Therefore, you only get sounds on your left ear.

You would need to find a different method to confirm that the audio sent is actually the right channel. You could perhaps use a stream that only has sound on the right channel?

Hieu