[Sound-open-firmware] 回复: 回复: 回复: SOF documentation

[Daniel Baluta]

On 5/6/20 2:26 PM, Terry Lv wrote:
> Hi Daniel,
>
>   I make a graph for my audio demo, could you help to review it?
>   My aim is to make a demo with two PCMs:
>
>  1. Warning sound.
>  2. Streaming music (using equalizer widget).
>  3. Multiplexer for both PCMs with volumn control. Priority of warning
>     sound is higher than music.
>
>   My drafted graph is:
>
> PCM0 ----> volume ----------------+
> |--low latency mixer ----> volume ---->  SSP(WMA8960)
>   PCM1 ----> volume ----> SRC ----+
>
>   Also, I've some questions.
>
>  1. Is it enough to use priority in PIPELINE_PCM_ADD to reduce music
>     volume when warning sound is ON?
>  2. Only mixer is used here. Is multiplexer needed here?
>
Hi Terry,

1) I'm not sure about this one so adding SOF mailing list.

2) I don't think you need a multiplexer.


Also, I think instead of SSP(wma8960) you want SAI(wm8960), right?


Also, why do you need SRC component?


thanks,

Daniel.