STA350BW: 2ch downmix to 1ch (Mono) with OCFG ''00''

[florian2]

Posted on January 21, 2014 at 12:32

Hello,

Planed: 1 integrated Speaker, 1 external Speaker. If external Speaker is not connected, the internal one should play ''Mono''. The configuration will remain ''2-channel (full-bridge) power, 2-channel data-out'' OCFG ''00'' In AP-Workbench and Datasheet, i did not found any Switch to generate ''Mono'' from 2-channel Input, with STA350BW. Would this be possible using the PEQ? Post-Mix? Are there additional Documents? How can i configure this: (CH1+CH)/2 ? Thank you best regards, Florian Breu #mono-downmix-sta350bw

[Nickname1623_O]

Posted on January 22, 2014 at 03:08

hello Florian,

for this purpose, you need to implement pre mixer by mix coefficients setting . for example , when channel 1 had been used for integrated speaker , and when external speaker is absent, you need to set mix coefficients of channel 1 to CH1=400000 , CH2=400000, mix coefficients of channel 2 to CH1=000000, CH2=000000. due to 7FFFFF is equal to 1 , so 400000 is equal to 0.5 in STA350BW DSP. Thanks and best regards Yun Tao ZHAO

From: breu.florian.001

Posted: Tuesday, January 21, 2014 12:32 PMSubject: STA350BW: 2ch downmix to 1ch (Mono) with OCFG ''00''

Hello,

Planed: 1 integrated Speaker, 1 external Speaker. If external Speaker is not connected, the internal one should play ''Mono''. The configuration will remain ''2-channel (full-bridge) power, 2-channel data-out'' OCFG ''00'' In AP-Workbench and Datasheet, i did not found any Switch to generate ''Mono'' from 2-channel Input, with STA350BW. Would this be possible using the PEQ? Post-Mix? Are there additional Documents? How can i configure this: (CH1+CH)/2 ? Thank you best regards, Florian Breu