Manual QOS for audio and video traffic control

hi folks ,
i want to know if there is any package to set the separate bandwidth for audio and video traffic ..

There is something better and it's called SQM: https://openwrt.org/docs/guide-user/network/traffic-shaping/sqm

still dont know how to use it for audio and video traffic control

That's the beauty of it, you don't. It takes care of it automatically. It should prioritize the things you want it to.

ohh i wanted to manually defined some specific bandwidth to audio traffic

That's the old way of going about things. Try SQM and if it doesn't work for you there are solutions/tools like qosmate or qosify just to name a pair

do you know how to verify if my voice traffic and audio traffic is working ..?

You can look at the information from the qdisc you use and ofcourse your own experience using it. Especially with voice and video you will notice reduced bandwidth, drops, etc immediately.